<> <> General Specifications Model PR300 Power and Energy Meter GS 77C01E01-01E Overview This panel-mounted power and energy meter with a large, three-row LED display integrates all the measuring functions required for power management in locations such as factories and buildings into a single unit. With the objective of working toward the preservation of the global environment by saving energy and performing equipment maintenance, the PR300 is designed to display and output the energy of various types of electrical equipment. Features * Saves on cost, wiring, and space Integrates a wide selection of functions for measuring things like energy (active, regenerative, reactive, and apparent), power (active, regenerative, reactive, and apparent), voltage, current, frequency, and power factor into a single unit. * Employs a large, three-row LED display Capable of displaying three-phase current and voltage simultaneously, and the measurement items you assign. * Analog output function Equipped with a transducer function for power (active, regenerative, reactive, and apparent), voltage, current, frequency, and power factor (4 to 20 mA DC). * Demand measurement Measures the average power and current within a specified period. It also allows you to set up alarm points to output alarms. * Equipped with a multitude of functions Enables measurement of the maximum and minimum values of voltage and the maximum value of current, as well as, for example, the use of external digital input to measure energy at arbitrary times. * Pulse output Capable of outputting pulses proportional to energy (one measurement item from active, regenerative, reactive, and apparent energy). * Converts the phase and wire system of an AC power system and an input voltage circuit to a universal format The PR300 can handle from the single-phase two-wire system and single-phase three-wire system to the threephase three-wire system and three-phase four-wire system, and also universally cope with input voltage circuits up to 600 V AC. * Compatible with ANSI 4-inch round form size and DIN 96-square instrument size The ability to attach and detach JIS/ANSI-mounting kit makes the PR300 compatible with panel cutouts of ANSI 4inch round form, JIS 110-square instrument size, and DIN 96-square instrument size. * Standard equipped with an RS-485 communication function and capable of Ethernet communication * Compatible with overseas requirements Power line indications A, B, and C provided for overseas use, in addition to R, S, and T ANSI 4-inch round form size DIN 96-square instrument size The ability to attach and detach JIS/ANSI-mounting kit ensures compatibility with two sizes. Model and Suffix Codes PR300 -0 Model Phase and wire system 3: Universal three-phase three-wire system (single-phase two-wire, single-phase three-wire, and three-phase three-wire systems) 4: Universal three-phase four-wire system (single-phase two-wire, single-phase three-wire, three-phase three-wire, and three-phase four-wire systems) 5: Three-phase four-wire system (2.5 element)*1 Input voltage/input current 1: Universal voltage input*2 (150 V, 300V, 600 V) / 1 A AC 2: Universal voltage input*2 (150 V, 300 V, 600 V) / 5 A AC Additional input and output function 0: 1 digital input 1: 1 digital input, 1 analog output 2: 1 digital input, 1 pulse output 3: 1 digital input, 1 analog output, 1 pulse output Communication function 0: RS-485 communication 3: RS-485 communication, Ethernet communication*3 Optional measuring function 0: None 3: Demand measurement (1 demand alarm output) Power supply 6: 100-240 V AC 10% (50/60 Hz) or 130-300 V DC 15% Phase indication format A: A, B, and C indications R: R, S, and T indications *1 In cases where "Three-phase four-wire system (2.5 element)" is specified, the input current specification of 1 A AC is not applicable. (PR300-51xxx-xx-0 cannot be ordered.) Can be used only when the voltage is in a state of equilibrium. The phase and wire system cannot be changed. *2 Set the voltage range (150 V, 300 V, or 600 V) according to the rated input voltage to be measured. (Refer to "Rated Input Voltage" of the Input Specifications on page 6.) *3 For Ethernet communication, the RS-485 communication interface is exclusively for the Ethernet-serial gateway function. Ordering Information Specify the model and suffix codes. Example: PR300-31000-6A-0 GS 77C01E01-01E (c)Copyright Apr. 2006 (KP) 5th Edition Dec. 10, 2008 (KP) 2 <> <> Measuring Functions Measurement item Demand current *2 Active energy () *1 Active energy () *1 Reactive energy () *1 Reactive energy () *1 Apparent energy *1 Optional active energy *1 Instantaneous Active power Maximum Minimum Instantaneous Reactive power Maximum Minimum Instantaneous Apparent power Maximum Minimum Instantaneous Voltage-1 Maximum Minimum Instantaneous Voltage-2 Maximum Minimum Instantaneous Voltage-3 Maximum Minimum Instantaneous Current-1 Maximum Instantaneous Current-2 Maximum Instantaneous Current-3 Maximum Instantaneous Frequency Maximum Minimum Instantaneous Power factor Maximum Minimum Demand Demand current-1 Maximum Demand Demand current-2 Maximum Demand Demand current-3 Maximum Demand *2 Demand power Maximum Single-phase Single-phase Three-phase Three-phase Three-phase Unit and Remarks four-wire system two-wire three-wire three-wire four-wire symbol system system system system (2.5 element) *3 kWh, MWh kWh, MWh Regenerative energy kvarh, Mvarh LAG: *4 kvarh, Mvarh LEAD: *4 kVAh, MVAh *4 Wh W, kW, MW *4 var, kvar, Mvar *4 VA, kVA, MVA V, kV V, kV V, kV *4 A, kA A, kA *4 A, kA Hz *4 COS *4 *4 A, kA A, kA A, kA A, kA A, kA A, kA W, kW, MW W, kW, MW *4 *4 *1 Integrated low-cut power can be set for each energy. Integrated low-cut power: This is a function for not integrating power less than a set value as energy. The setting range of integrated low-cut power is 0.05 to 20.00% of the rated power (initial value: 0.05%). *2 Either demand power or demand current can be set as a measurement item. *3 Can be used only when the voltage is in a state of equilibrium. *4 Can be measured only when the current is in a state of equilibrium. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation Calculated from the voltage-1 LAG: LEAD: : Effective : Ineffective GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 3 <> <> Optional integrating function Power is integrated while a control signal for optional integration is on. When the control signal is switched from off to on, the optional integrated value indication is reset and integration starts. (The integrated value prior to the reset is held in a register.) The integrated value cannot be guaranteed in the event of a power failure occurring during integration. Demand measurement (when demand measurement is specified) The PR300 measures average power or average current within a set demand period. The maximum demand value for the demand measuring time is held until the power is turned off, remote reset is executed, or the next demand measurement is started. Item Demand power/current Demand alarm mask time* Demand power alarm point Demand current alarm point Setting Range Active power, current 1 to 60 minutes (Demand alarm mask time to 60 minutes) 1 minute to length of demand period 1 to 1000 kW 1 to 1000 A Alarm release function Automatic release and manual release Data update interval 10 seconds Demand period Resolution Initial Value Active power 1 minute 30 minutes 1 minute 1 kW 1A 1 minute 100 kW 100 A Automatic release Remarks Demand alarm mask time Demand period When demand power is selected When demand current is selected * This is the time from the start of the demand period to the set time in which no judgment is made for the alarm (alarm masked). During the alarm mask time, no maximum demand value is updated and no alarm is output. Start demand measurement Stop demand measurement Demand period (1 period) Average power Average power (current) update (current) update Demand measuring time The maximum demand value for this time is held. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 4 <> <> Display and Operation Specifications (6) (7) (8) (9) (10) (5) (1) (4) Upper display (2) (3) Middle display (11) Lower display (12) (1) Measured Value Display 5-digit, 3-row, 7-segment LED display Display color: red Measured Value display: Measurement Item Display Active energy [kWh, MWh] *1 Reactive energy [kvarh, Mvarh] *2 Apparent energy [kVAh, MVAh] *1 Regenerative energy [kWh, MWh] *2 Optional active energy [Wh] Active/regenerative power (instantaneous, maximum, and minimum values) [W, kW, MW] *2, *3 Reactive power (instantaneous, maximum, and minimum values) [var, kvar, Mvar] *2, *3 Apparent power (instantaneous, maximum, and minimum values) [VA, kVA, MVA] *1, *3 Voltage (instantaneous, maximum, and minimum values) [V, kV] *1, *3 Current (instantaneous and maximum values) [A, kA] *2, *4 LEAD: d [COS] Power factor (instantaneous, maximum, *3 and minimum values) LAG: G [COS] Frequency (instantaneous, maximum, and minimum values) [Hz] *3 Demand power [W, kW, MW] [DEMAND] *4 Maximum demand power Demand current [A, kA] [DEMAND] *4 Maximum demand current *1: Without sign, but with a decimal point *2: With a sign and a decimal point ("+" is not indicated). Regenerative power (energy) always shows "-" negative indication. The position of a decimal point differs depending on the primary rated power, VT ratio, and CT ratio. *3: "MAX" lights up for the maximum value and "MIN" lights up for the minimum value. *4: "MAX" lights up for the maximum value. Measured Value screen: Display pattern: The measurement items you want to display are assigned to each of the upper, middle, and lower displays to provide indications using three display rows as one pattern. Up to eight display patterns can be set. The initial values are as shown in the following table. (Combinations other than those shown in the following table are also available if the parameters are set.) Number of display patterns: Can be set in the range of 1 to 8. Pressing the SET/ENT key switches the display from "display pattern-1," "display pattern-2," and so on in order according to the number of patterns set. The initial value is "1" and only display pattern-1 is displayed when this value is set. Upper display Middle display Lower display Display Pattern-1 Display Pattern-2 Display Pattern-3 Display Pattern-4 Display Pattern-5 Current (Phase switch Active power Active energy Current-1 Voltage-1 indication)* Voltage Reactive LEAD reactive (Phase switch Current-2 Voltage-2 energy power indication)* Apparent Active power Power factor Current-3 Voltage-3 energy Display Pattern-6 Display Pattern-7 Display Pattern-8 Current Current (Phase switch (Phase switch Active power indication)* indication)* Voltage Maximum (Phase switch Active power demand value indication)* Demand Frequency Power factor value * The display of current (phase switch indication) is switched between current-1, current-2, and current-3 each time the SEL key is pressed. The display of voltage (phase switch indication) is switched between voltage-1, voltage-2, and voltage-3 each time the SEL key is pressed. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 5 <> <> (2) (3) (4) VT ratio/CT ratio: If the VT ratio and CT ratio are set, input to the PR300 is displayed after converting it to the primary input value before VT or CT. The VT and CT ratios can be set via communication or using the operation keys. VT ratio setting range: 1 to 6000* CT ratio setting range: 0.05 to 32000* * Set the VT ratio and CT ratio so that [secondary rated power] [VT ratio] [CT ratio] is smaller than 10 GW. Unit Lamps The relevant unit lamp lights up according to a measurement item and measured value. Display color: red MAX and MIN Lamps Either the MAX or MIN lamp lights up when a maximum or minimum measured value is displayed. Display color: red Phase Indication Lamps Indicate the phase to which the measured value corresponds. (The A, B, and C indications or R, S, and T indications should be specified in accordance with the suffix code.) Display color: red Phase and Wire System Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system Three-phase four-wire system (2.5 element) Voltage-1 A (R) A, B (R, S) A, B (R, S) A (R) Voltage-2 - B, C (S, T) - Voltage-3 - - B, C (S, T) Current-2 - C (T) Current-1 A (R) A (R) A (R) A (R) B (S) B (S) C (T) C (T) A (R) - C (T) A (R)* - C (T)* C (T) - Current-3 - - * Can be measured only when the current is in a state of equilibrium. (5) Power Lamp Lights up when power is supplied. Blinks (4 times/sec) until it returns to normal when the communication error occurs. Display color: green (6) Communication Lamp Blinks during communication (RS-485 or Ethernet). Display color: green (7) Pulse Output Lamp Lights up when output is produced during pulse output, and goes out when no output is produced. Display color: green (8) Demand Alarm Lamp If a demand value exceeds the demand alarm point at a time other than during the alarm mask time, the OVER lamp lights up to indicate the occurrence of an alarm. Display color: red (9) Phase and Wire The lamps of the phase and wire system that have been set light up. System Lamps Display color: green (10) Input Range Lamps The input voltage range (150 V, 300 V, or 600 V) and input current range (1 A or 5 A) that have been set light up. Display color: green (11) DEMAND Lamp Lights up when a demand value is displayed. Display color: red Used to switch measured value display patterns. (12) Operation Keys This key is also used for setting parameters. Used to move the display digit during energy indication. This key is also used for setting parameters. Used to display the maximum or minimum measured value. These keys are also used for setting parameters. Used to switch phase indications when the PR300 displays a voltage or current for which phase indication can be changed. (Phase switch indication is not available for single-phase two-wire system.) This key is also used for setting parameters. Used to start/stop demand measurement. The lamp in the key lights up during demand measurement. Display color: green Indicator-out Mode Setting This function turns off LEDs after a certain time elapses, with the exception of the power lamp (LED). The ON/OFF setting of the indicator-out mode function and the wait time before entering the indicator-out mode can be set using the operation keys. (Cannot be set via communication.) Indicator-out mode: ON/OFF (initial value: OFF) Indicator-out mode wait time: 1 to 60 minutes (resolution: 1 minute) (initial value: 10 minutes) A/D Sampling Rate, Data Update Interval A/D sampling rate: 4.8 kHz Internal measurement data: display/communication data is updated at an interval of 1 second or less All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 6 <> <> Input Specifications Phase and Wire System Frequency * Universal three-phase three-wire system (switch the setting from single-phase two-wire system, single-phase three-wire system, or three-phase three-wire system) * Universal three-phase four-wire system (switch the setting from single-phase two-wire system, single-phase three-wire system, three-phase three-wire system, or three-phase four-wire system) * Three-phase four-wire system (2.5 element) 45 to 65 Hz Rated Input Voltage Rated Input Current Rated Input Power and Measuring Range (When VT and CT are used, their respective secondary values) Rated Voltage 120 V 240 V 480 V Voltage Range (Variable) 150 V 300 V 600 V Rated Current Current Range (Fixed) The primary voltage of VT 900 kV 1800 kV 3600 kV The primary current of CT 1A 1A 32 kA 5A 5A 160 kA Input Measuring Range Rated Power 120 V / 1 A 120 V / 5 A 240 V / 1 A 240 V / 5 A 480 V / 1 A 480 V / 5 A 100 W 500 W 200 W 1000 W 400 W 2000 W Approximate Consumed VA Rated Power 120 V / 1 A 120 V / 5 A 240 V / 1 A 240 V / 5 A 480 V / 1 A 480 V / 5 A 200 W 1000 W 400 W 2000 W 800 W 4000 W Rated Power 240 V / 1 A 240 V / 5 A 0.2 VA 0.4 VA 200 W 1000 W Approximate Consumed VA Input Measuring Range Voltage Current 240 to 240 W 1200 to 1200 W 0.2 VA/ 0.2 VA/ phase phase 0.2 VA 0.8 VA * Three-phase three-wire system Input Measuring Range Input (AC) Voltage Current 120 to 120 W 600 to 600 W 240 to 240 W 1200 to 1200 W 480 to 480 W 2400 to 2400 W Input (AC) Allowable Input Current 1.2 times the current range (continuous) Twice the current range (10 seconds) or 10 times the current range (3 seconds) * Single-phase three-wire system * Single-phase two-wire system Input (AC) Allowable Input Voltage 150 V 300 V 600 V * Three-phase four-wire system Approximate Consumed VA Input (AC) Rated Power Voltage Current 240 to 240 W 1200 to 1200 W 480 to 480 W 2400 to 2400 W 960 to 960 W 4800 to 4800 W 0.2 VA/ phase 0.4 VA/ 0.2 VA/ phase phase 0.8 VA/ phase Input Measuring Range Approximate Consumed VA Voltage Current 360 to 360 W 0.2 VA/ * 120 V / 1 A 300 W 120 V / 5 A 1500 W 1800 to 1800 W phase 720 to 720 W 0.4 VA/ 0.2 VA/ * 240 V / 1 A 600 W 240 V / 5 A 3000 W 3600 to 3600 W phase phase * 480 V / 1 A 1200 W 1440 to 1440 W 0.8 VA/ 480 V / 5 A 6000 W 7200 to 7200 W phase *Input specification of 1 A AC is not available for 2.5 element. * Input measuring range when VT and CT are used The primary input power (Secondary rated power 1.2 VT ratio CT ratio) is smaller than 10 GW and the value calculated by the following equation is within the input measuring range mentioned above. Input measuring range (W) = Primary input power (W) VT ratio CT ratio Digital Input Specifications For digital input, either the optional integration start/stop or the demand alarm release can be used. If demand measurement is specified for an optional measuring function, digital input enters demand alarm release status. In this case, the optional integration start/stop cannot be used. Control signal for optional integration Function Starts or stops optional integration. Number of Inputs 1 Input Signal Voltage signal* ON signal: 4.5 to 25 V DC OFF signal: within 1 V DC 50 ms Minimum ON time * A special order can be placed for no-voltage contact. Note: Optional integration control is also possible via communication. Once control is performed by digital input, only digital input-based control is available. Communication-based control is no longer possible until the power is turned off/on or remote reset is executed. Demand alarm release (when demand measurement is specified) Function Cancels demand alarm. Number of Inputs 1 Input Signal Voltage signal* ON signal:4.5 to 25 V DC OFF signal: within 1 V DC 50 ms Minimum ON time * A special order can be placed for no-voltage contact. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 7 <> <> Analog Output Specifications (When Analog Output is Specified) Function Measurement Item for Output Output Signal Output Accuracy Allowable Load Resistance Response speed Setting Item Setting Range of Lower/Upper Limits of Scaling According to Measurement Item for Output Converts measurement data into DC current for output. One item selected from active power, reactive power, apparent power, voltage (1 to 3), current (1 to 3), power factor, and frequency 4 to 20 mA DC Measurement accuracy of measurement item for output (0.5% of F.S.) 0 to 600 2 seconds or less (until 1% of the final value is reached) Measurement item for output and the lower and upper limits of scaling. Initial value: active power (W), lower limit of scaling: 50% (0 W), upper limit of scaling: 100% (maximum value of the input measuring range W) Scaling setting condition: upper limit of scaling lower limit of scaling 50% Active power rated power (W) to rated power (W) Reactive power rated power (var) to rated power (var) Apparent power 0 to rated power (VA) Voltage (1 to 3) 0 to voltage range (V) Current (1 to 3) 0 to current range (A) Power factor (LEAD)0.5 to 1 to (LAG)0.5 Frequency 45 to 65 (Hz) Pulse Output Specifications (When Pulse Output is Specified) Function Measurement Item for Output Number of Outputs Output Signal Contact Capacity Pulse Unit Setting Item ON Pulse Width Outputs pulses proportional to energy. One item selected from active energy, regenerative energy, reactive energy (LEAD, LAG), and apparent energy 1 Open collector 30 V DC at 200 mA 0.1 to 5000.0 kWh/pulse* (set in 100 Wh increments) Measurement item for output, pulse unit, and ON pulse width Initial value: active energy (kWh), pulse unit: 1 kWh/pulse, and ON pulse width: 50 ms Represents the ON time of pulses to be output. (Set the pulse width so that the maximum ON pulse width obtained by the following equation is not exceeded.) Within the range of 10 to 1270 ms (set in 10 ms increments) Maximum ON pulse width (ms) = Pulse unit [kWh/pulse]* 3600 10002 Secondary rated power [W] VT ratio CT ratio 1.2 2 * The units are kvarh/pulse for reactive energy and kVAh/pulse for apparent energy. Demand Alarm Output Specifications (When Demand Measurement is Specified) Function Output Signal Contact Capacity Alarm Release Function Outputs an alarm if the measured demand value exceeds the set demand alarm point. Open collector 30 V DC at 200 mA Automatic release: Cancels the alarm if demand falls below the demand alarm point when the next measurement is performed. Manual release*: Holds the status of an alarm that occurred once. Cancels the alarm by digital input or the operation key, or via communication. * Refer to "Demand alarm release" of the Digital Input Specifications. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 8 <> <> Communication Specifications RS-485 communication Example: PC Maximum communication distance: 1200 m Maximum number of slave stations to be connected: 31 Station number 01 Function Protocol Transmission Distance Connection Method Station Number Transmission Method Synchronization Method Baud Rate Xon/Xoff Control Data Format Station number 02 Station number 31 RS-485 communication enables you to use the command/response method to read a variety of measurements and write various settings. PC link (with checksum, without checksum), Modbus (RTU, ASCII), PR201 original (Note 1) Approx. 1200 m maximum (when 24 AWG twisted-pair cable is used) Multi-drop connection (a maximum of 32 units [including a higher-level device]) 01 to 99 (maximum number of units to be connected: 31 [number of units that can be connected to a PC etc.]) (Setting range: 01 to 31 is recommended) Half-duplex communication Start-stop synchronization 19200, 9600, and 2400 bps None Data length 8 bits, 7 bits Parity None, even, odd Stop bit 1 bit, 2 bits For details, refer to the user's manual for communications of each device to be connected. (Note 1) The settings cannot be written. Example of Connection Diagram Approx. 1200 m maximum (31 units maximum) RS-232C straight ML2 cable RS-232C/RS-485 Converter (Yokogawa) (A) (B) (SG) PC PR300 PR300 PR300 (A) (B) (SG) (A) (B) (SG) (TERM) (A) (B) (SG) 120 (built-in) RS-485 RS-485 RS-485 * * 120 (external resistor) Use the external resistor without using the built-in resistor of ML2. Terminator (FG) Notes: The PR300 employs a two-wire system for RS-485 communication. SG: The SG terminal is connected to match the signal level of the RS-485 communication line. FG: All shielded wires must be connected and then grounded at one place to provide noise protection for RS-485 communication lines. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 9 <> <> Ethernet communication (when the Ethernet communication function is specified) Example: PC IP address: 192.168.1.1 HUB Ethernet LAN connection Station number 01 IP address: 192.168.1.2 Function Communication Specifications IP Address Modbus/TCP Function Overview of Modbus/TCP Protocol Station number 01 IP address: 192.168.1.3 Station number 01 IP address: 192.168.1.4 Station number 01 IP address: 192.168.1.5 Ethernet communication enables you to use the command/response method to read a variety of measurements and write various settings. The PR300 can be connected to IEEE802.3-compliant networks Application layer (10BASE-T/100BASE-TX). Transport layer Higher-level device (PC etc.) MODBUS/TCP Network layer TCP, UDP IP, ICMP, ARP Data link layer Physical layer Ethernet 10BASE-T/100BASE-TX Protocol Modbus/TCP Access Control CSMA/CD Baud Rate 10 Mbps/100 Mbps Maximum Segment Length 100 m (distance between the hub and module) Maximum of 4 levels of cascading (for 10BASE-T) or maximum of 2 levels of cascading (for 100BASE-TX) Maximum Connecting Configuration (Number of hubs that can be cascade connected) IP addresses can be set using the operation keys on the front of the PR300. Code Function Description 03 Reads data from multiple D registers Capable of reading data from up to 64 registers continuously. 06 Writes data into D register Capable of writing data into one register. 08 Performs loopback test Capable of performing a communication test. 16 Writes data into multiple D registers Capable of writing data into up to 32 registers continuously. The structure of Modbus/TCP protocol is as follows: The Simple Protocol Data Unit (PDU) is MBAP Header Function code Data the same as Modbus/RTU (Modbus PDU protocol via serial communication). The Modbus Application Protocol Header(MBAP Header) is made of the following seven bytes: Byte No Description 0 1 Transaction ID 2 3 Protocol ID 4 5 6 Number of bytes Unit ID Transaction ID: Set any value for identifying the transaction. The PR300 returns a value received from a higher-level device as a response. Protocol ID: Specify "0" for the Modbus/TCP protocol. Number of bytes: Number of bytes after the unit ID (byte number 6) Unit ID: The PR300 returns a value received from a higher-level device as a response. EthernetSerial Gateway Function The PR300 has an RS-485 communication terminal in addition to an Ethernet communication connector. Modbus/TCP commands received by Ethernet are relayed to the RS-485 terminal. This enables the PR300 to connect to a device with an RS-485 communication function (Modbus/RTU protocol) via a network. RS-485 communication Protocol Modbus/RTU Baud Rate 9600 bps Parity Even, odd, or none Stop Bit 1 bit Data Length 8 bits Example: Higher-level device IP address: 192.168.1.1 (arbitrary) Ethernet 10BASE-T/100BASE-TX PR300 (with Ethernet communication function) Station number 01 (fixed) IP address: 192.168.1.2 (arbitrary) RS-485 connection RS-485 serial communication device Power monitor of POWERCERT Series Digital indicating controller of GREEN Series Station number 02 Signal conditioner of JUXTA Series (arbitrary) Station number 10 (arbitrary) For details, refer to the user's manual for communications of each device to be connected. Note: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. Therefore, it is not possible for a higher-level device such as a PC to access the PR300 via the RS-485 communication interface. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 10 <> <> Standard Performance Accuracy Rating Calculation Accuracy Backup upon Power Failure Insulation Resistance Withstand Voltage Impulse Withstand Voltage Effects of Magnetic Field Effects of Changes in Ambient Temperature Effects of Power Supply Voltage Variations Effects of Input Frequency Power Supply Power Consumption Active energy/optional active energy (Wh) 0.5% (EN60687 accuracy: class 0.5 or equivalent) 0.5% of F.S. Active power (W) 0.25% of F.S. (voltage rms) Voltage (V) 0.25% of F.S. (current rms) Current (A) 0.5 Hz Frequency (Hz) 0.5% Demand The value is calculated to an accuracy of 1 digit from the measured value for reactive energy, apparent energy, reactive power, apparent power, power factor or current*. * Current is only for the 2.5 element measurement. The last integrated values obtained immediately before the power failure are held for active energy, regenerative energy, reactive energy, and apparent energy. Between each of the voltage input, current input, power, 100 M or more (at 500 V DC) ground, digital input, pulse output, analog output, RS485 communication output, Ethernet communication output, and alarm output terminals 2500 V AC for 1 minute Between each of the voltage input, current input, power, and ground terminals: 2500 V AC for 1 minute Between (the voltage input, current input, power and ground terminals) and the digital input, pulse output, analog output, alarm output, RS-485 communication output, and Ethernet communication output terminals: Between each of the digital input, pulse output, analog output, 1000 V AC for 1 minute alarm output, and (RS-485 communication output, Ethernet communication output) terminals: 500 V AC for 1 minute Between the RS-485 communication output, and Ethernet communication output terminals: Between all of the voltage input, current input, and power terminals and the ground terminal: Between all of the output and ground terminals and all of the voltage input and current input terminals: 6 kV (1.2/50s), 10 times for positive and negative 400 A/m or less Active power: 0.5% of F.S. Voltage/Current: 0.25% of F.S. 0.03%/C for a temperature change rate of 10C/h or less (when 0.05 In I I max, power factor = 1) 0.05%/C for a temperature change rate of 10C/h or less (when 0.1 In I I max, power factor = LAG 0.5) In: rated current, I: present current input Active power: 0.25%, Voltage/Current: 0.125% (for variations within the power supply operating range (when 0.01 In and power factor = 1)) In: rated current Active power: 0.25%, Voltage/Current: 0.125% (for variation of 45 to 65 Hz) 100-240 V AC 10% (50/60 Hz) or 130-300 V DC 15% AC drive: 10 VA maximum, DC drive: 5 W maximum Safety and EMC Standards Safety Standards Measurement category Compliant with IEC/EN61010-1 UL61010-1 CAN/CSA C22.2 No.61010-1-04 (C-UL Listed) 600V CAT. III Measurement Category Installation category Rated measurement input EMC-compliant Standards Description Remarks CAT.I Circuits not directly connected to main power supply CAT.II Circuits directly connected to low-voltage facility Home-use equipment, portable tools, etc. CAT.III Circuits in building facilities Switchboards, circuit breakers, etc. CAT.IV Supply sources to low-voltage facilities Overhead lines, cable systems, etc. CAT. II Pollution degree: 2 (IEC/EN61010-1) Voltage input: 600V AC (between terminals) Current input: 600V AC (across ground) Compliant with EN61326 During testing, the instrument continues to operate at a measurement accuracy within the range of 20%. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 11 <> <> Environmental Conditions Normal Operating Conditions Warm-up time At least 30 minutes 0 to 50C (reference temperature: 23 2C) Ambient temperature 10C/h or less Temperature change 20 to 90% RH (no condensation) Ambient humidity 400 A/m or less Magnetic field 10 to 60 Hz, 0.035 mm, 75 minutes Continuous vibration 60 to 150 Hz, 4.9 m/s2, 75 minutes 14.7 m/s2 for 15 seconds or less Short-time vibration 98 m/s2 or less (for shock time of 11 ms) Shock Indoor installation only Installation Vertical surface mounting only Mounting position 2000 m or less Installation altitude Effects on Operating Conditions Effects of ambient temperature Analog output: 0.05% of F.S./C or less Effects on supply voltage variations Analog output: 0.05% of F.S./C or less Transport and Storage Conditions 20 to 70C Temperature 5 to 95% RH (no condensation) Humidity Power Items and Equations (V and A are rms values) Phase and Wire Syatem Power Apparent Power Reactive (without using reactive VA= VA Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Power Factor power meter method) VAi= ViAi i=1, 2 VA= VA1+VA2 Q= ((VA)2P2) Qi= ((VAi)2Pi2) i= 1, 2 Q = Q1+Q2 ((VAi)2Pi2) Qi= VAi= ViAi i= 1, 3 i= 1, 3 VA= 3 /2(VA1+VA3) Q = Q1+Q3 P / VA (without using reactive power meter method) VAi= ViAi Qi= ((VAi)2Pi2) Three-phase i= 1, 2, 3 four-wire system i=1, 2, 3 VA= VA1+VA2+VA3 Q = Q1+Q2+Q3 VAi= ViAi Qi= ( 3 /2(VAi)2Pi2) Three-phase i= 1, 3 i= 1, 3 four-wire system (2.5 element) VA= 3 /2(VA1+VA3) Q = Q1+Q3 * For distorted wave input, there may be differences between the PR300 and a measuring instrument that uses a different measurement principle. Shock and dropping of 90 cm (provided that an external packing box is used) package Initial Settings (Time of Shipment) The PR300 has the following initial settings at the time of shipment. Settings can be modified after delivery. Initial Value Three-phase three-wire system (for three-phase three-wire system) Phase and wire system Three-phase four-wire system (for three-phase four-wire system) Voltage range 300 V VT ratio 1 1.00 CT ratio 0.05 % Integrated low-cut power 01 Station number PC link with checksum Protocol 9600 bps Baud rate None Parity 1 bit Stop bit 8 bits Data length 192.168.1.1 IP address *1 502 Port number *1 255.255.255.0 Subnet mask *1 0.0.0.0 Default gateway *1 Measurement item for pulse output Active energy (kWh) 1 kWh/pulse Pulse unit 50 ms ON pulse width Measurement item for analog output Active power (W) 50% (0 W) Lower limit of scaling 100% (maximum value of the Upper limit of scaling input measuring range W) Active power Demand power/current 30 minutes Demand period 1 minute Demand alarm mask time 100 kW Demand power alarm point 100 A Demand current alarm point Automatic release Alarm release function Other Indicator-out mode/indicator-out Off/10 minutes mode wait time Casing: polycarbonate resin (PC), UL94 V-0 Terminal block: polybutylene terephthalate (PBT), UL94 V-0 Terminal cover: polyamide resin (PA6), UL94 V-2 Panel mounting (refer to Panel Cutout Mounting Method Dimensions) Connection Method M3 screws for terminal connections: analog output, pulse output, demand alarm output, digital input, and RS-485 communication M4 screws for terminal connections: voltage/current input and power supply RJ45 connection: Ethernet communication External Dimensions 110(H) 110(W) 128(D) mm or (including a terminal cover) 96(H) 96(W) 126(D) mm Weight Approx. 600 g (when the accessories such as mounting bracket are attached) Materials Accessories JIS/ANSI-mounting kit DIN-mounting bracket Dust cover (with a screw) Terminal cover (with screws) Shorting bar (for RS-485 communication termination) Tag number label 1 set 2 1 1 1 2 Demand Measurement *4 Analog Output *3 Pulse Output *2 Communication Input Setting Item Mounting and Shape *1 When the Ethernet communication function is specified *2 When pulse output is specified *3 When analog output is specified *4 When demand measurement is specified All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 12 <> <> Connection Diagrams A phase and wire system can be selected by specifying the parameters. If measurement input does not exceed 600 V AC or 5A AC, direct input without using a VT or CT is possible. Do not ground the input circuit when a VT or CT is not used. Perform wiring for the voltage and current in the same circuit. Single-phase two-wire system Pulse output 13 Power-source side 1 2 14 Analog output 11 Contact capacity: 30V DC, 200mA Output signal: 4 to 20mA DC 12 RS-485 communication*1 17 TERM 18 19 20 1S 1L K k CT L l 1 2 4 U u Fuse V VT v P1 P2 6 3 5 7 11 12 13 14 15 16 8 18 20 23 Screws marked with are an essential part of the structure. For safety reasons, do not touch them. 16 ALM 25 N Power supply PE Optional integration control signal or demand alarm release*2 Contact capacity: 30V DC, 200mA (resistive load) *1: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. *2: If demand measurement is specified, the demand alarm release is selected. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation . LED Demand alarm output ALM 15 CAUTION 18 Operating range: 100-240V AC 10% or 130-300V DC 15% LED Load side RS-485 25 22 10 B SG Power supply L 23 24 24 21 9 A When terminating on wiring, short-circuit terminals 17 and 17 19 R: 120 (built-in) R 21 DI 22 DI Voltage signal ON signal: 4.5 to 25V DC OFF signal: within 1V DC Ethernet communication RJ45 connector 10BASE-T/100BASE-TX Link LED (top) Color Description Off Stopped Orange 10Mbps Green 100Mbps Active LED (bottom) Color Description Off Stopped Orange Half duplex Green Full duplex Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half duplex and full duplex takes place automatically. GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 13 <> <> Single-phase three-wire system Pulse output 13 Power-source side 1 N 2 14 Analog output 11 Contact capacity: 30V DC, 200mA 12 Output signal: 4 to 20mA DC RS-485 communication*1 17 TERM 18 19 20 K k CT L l 1 1S 1L 2S 2L k CT L l K U Fuse V V u 2 4 6 P1 P0 P2 v v 3 5 7 11 12 13 14 15 16 8 24 24 25 25 LED LED Load side Demand alarm output ALM 15 CAUTION Screws marked with are an essential part of the structure. For safety reasons, do not touch them. 16 ALM SG 18 . N Power supply PE Operating range: 100-240V AC 10% or 130-300V DC 15% 22 10 U VT u 23 21 9 RS-485 B Power supply L 23 18 20 A When terminating on wiring, short-circuit terminals 17 and 17 19 R: 120 (built-in) R Contact capacity: 30V DC, 200mA (resistive load) *1: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. *2: If demand measurement is specified, the demand alarm release is selected. Optional integration control signal or demand alarm release*2 21 DI 22 DI Voltage signal ON signal: 4.5 to 25V DC OFF signal: within 1V DC Ethernet communication RJ45 connector 10BASE-T/100BASE-TX Link LED (top) Color Description Off Stopped Orange 10Mbps Green 100Mbps Active LED (bottom) Color Description Off Stopped Orange Half duplex Green Full duplex Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half duplex and full duplex takes place automatically. Three-phase three-wire system Pulse output 13 Power-source side 1 2 3 14 Analog output 11 Contact capacity: 30V DC, 200mA Output signal: 4 to 20mA DC 12 RS-485 communication*1 17 TERM 18 A B C (R) (S) (T) 19 20 K k CT L l 1 1S 1L 3S 3L k CT L l K U Fuse V V u v v U VT u P1 P2 P3 2 4 6 3 5 7 11 12 13 14 15 16 8 18 20 23 24 21 10 16 ALM Contact capacity: 30V DC, 200mA (resistive load) *1: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. *2: If demand measurement is specified, the demand alarm release is selected. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation 18 . Power supply L 23 24 25 N Power supply PE Optional integration control signal or demand alarm release*2 Demand alarm output ALM 15 Screws marked with are an essential part of the structure. For safety reasons, do not touch them. SG LED CAUTION RS-485 Operating range: 100-240V AC 10% or 130-300V DC 15% LED Load side B 25 22 9 A When terminating on wiring, short-circuit terminals 17 and 17 19 R: 120 (built-in) R 21 DI 22 DI Voltage signal ON signal: 4.5 to 25V DC OFF signal: within 1V DC Ethernet communication RJ45 connector 10BASE-T/100BASE-TX Link LED (top) Color Description Off Stopped Orange 10Mbps Green 100Mbps Active LED (bottom) Color Description Off Stopped Orange Half duplex Green Full duplex Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half duplex and full duplex takes place automatically. GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 14 <> <> Three-phase four-wire system Pulse output 13 Power-source side N 1 2 3 14 A B C (R) (S) (T) Analog output 11 Contact capacity: 30V DC, 200mA Output signal: 4 to 20mA DC 12 RS-485 communication*1 17 TERM 18 19 20 1S 1L 2S 2L 3S 3L P1 P0 P2 K k CT L l K k CT L l K k CT L l Fuse U u V v U V u v u U 1 2 4 6 3 5 7 11 12 13 14 15 16 8 24 24 25 Optional integration control signal or demand alarm release*2 Demand alarm output ALM 15 16 Screws marked with are an essential part of the structure. For safety reasons, do not touch them. ALM PE LED V VT v CAUTION . N Power supply Operating range: 100-240V AC 10% or 130-300V DC 15% LED Load side 18 25 22 10 P3 23 21 9 RS-485 B SG Power supply L 23 18 20 A When terminating on wiring, short-circuit terminals 17 and 17 19 R: 120 (built-in) R Contact capacity: 30V DC, 200mA (resistive load) *1: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. *2: If demand measurement is specified, the demand alarm release is selected. 21 DI 22 DI Voltage signal ON signal: 4.5 to 25V DC OFF signal: within 1V DC Ethernet communication RJ45 connector 10BASE-T/100BASE-TX Link LED (top) Color Description Off Stopped Orange 10Mbps Green 100Mbps Active LED (bottom) Color Description Off Stopped Orange Half duplex Green Full duplex Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half duplex and full duplex takes place automatically. Three-phase four-wire system (2.5 element) Pulse output 13 Power-source side N 1 2 3 14 A B C (R) (S) (T) Analog output 11 Contact capacity: 30V DC, 200mA 12 Output signal: 4 to 20mA DC RS-485 communication*1 17 TERM 18 19 20 1 1S K k CT L l K k CT L l K k CT L l Fuse U u v v V V u U 1L 2S 2L 3S 3L P1 P0 P3 2 4 6 3 5 7 11 12 13 14 15 16 8 18 20 24 Screws marked with are an essential part of the structure. For safety reasons, do not touch them. 16 ALM 18 Contact capacity: 30V DC, 200mA (resistive load) . Power supply L 23 24 25 N Power supply PE Optional integration control signal or demand alarm release*2 *1: If Ethernet communication is used, the RS-485 communication interface is used specifically for the Ethernet-serial gateway function. *2: If demand measurement is specified, the demand alarm release is selected. All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation SG LED Demand alarm output ALM 15 CAUTION RS-485 Operating range: 100-240V AC 10% or 130-300V DC 15% LED VT B 25 22 10 Load side 23 21 9 A When terminating on wiring, short-circuit terminals 17 and 17 19 R: 120 (built-in) R 21 DI 22 DI Voltage signal ON signal: 4.5 to 25V DC OFF signal: within 1V DC Ethernet communication RJ45 connector 10BASE-T/100BASE-TX Link LED (top) Color Description Off Stopped Orange 10Mbps Green 100Mbps Active LED (bottom) Color Description Off Stopped Orange Half duplex Green Full duplex Switching between 10BASE-T and 100BASE-TX takes place automatically. Switching between half duplex and full duplex takes place automatically. GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 15 <> <> External Dimensions ANSI 4-inch round form size (when a bezel is attached) Unit: mm 110 (126.5) 104.5 Dust cover 22 2 (109) 1.5 110 109 Terminal cover Bezel (for ANSI-mounting) 23 2-M5 1 to 10 (Acceptable panel thickness for mounting) ANSI 42.90.4 42.90.4 (1.6880.015) (1.6880.015) Unit: mm (approx. inch) o101.6 (o4.000) 42.90.4 (1.6880.015) 42.90.4 (1.6880.015) o7.9 (o0.312) Multiple Mounting 160 min. (6.299 min.) 160 min. (6.299 min.) Normal Allowable Deviation= (Value of JIS B 0401-1999 tolerance grade IT18)/2 All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation GS 77C01E01-01E 5th Edition Dec. 10, 2008-00 16 <> <> DIN 96-square instrument size Unit: mm 110 (124.5) 12.3 96 112.2 (109) 1.5 Dust cover Terminal cover 96 109 1 to 10 (Acceptable panel Mounting bracket thickness for mounting) 2 places Unit: mm 92 +0.8 0 (68) 92 +0.8 0 (68) Min. 160 Min. 160 Normal Allowable Deviation= (Value of JIS B 0401-1999 tolerance grade IT18)/2 All Rights Reserved. Copyright (c) 2006, Yokogawa Electric Corporation Subject to change without notice. GS 77C01E01-01E 5th Edition Dec. 10, 2008-00