1Description
Electronic monitoring relay for load monitoring in
single and three-phase networks, based on the
power factor cos ϕ
EMD-FL-PF-400
© PHOENIX CONTACT - 09/2009
Data sheet
INTERFACE
Increasingly higher demands are being placed on safety and
system availability – across all sectors. Processes are
becoming more and more complex, not only in mechanical
engineering and the chemical industry, but also in plant and
automation technology. Demands on power engineering are
also increasing constantly.
Error-free and therefore cost-effective operation can only be
achieved through continuous monitoring of important network
and system parameters. Electronic monitoring relays in the
EMD series are available for a wide range of monitoring tasks
to avoid the consequences of errors or to keep them within
limits.
The operating states are indicated using colored LEDs, errors
that may occur can be sent to a control system via a floating
contact or can shut down a part of the system. Some device
versions are equipped with startup and response delays in
order to briefly tolerate measured values outside the set
monitoring range.
WARNING: Risk of electric shock
Never carry out work when voltage is present.
Make sure you always use the the latest documentation.
It can be downloaded at www.phoenixcontact.net/download.
– Overload monitoring
– Underload monitoring
–Window function
– Adjustable threshold values
– Adjustable starting override
– Adjustable response delay
– Error memory
– Wide-range power supply unit
–Two PDTs
102914_en_02
Features
EMD-FL-PF-400
102914_en_02 PHOENIX CONTACT 2
Description Type Order No. Pcs. / Pkt.
Electronic monitoring relay for load monitoring in single and three-phase
networks, based on the power factor cos ϕ
EMD-FL-PF-400 2885809 1
Input data
Input name Measuring input
Measured value AC sine (10 ... 100 Hz)
Nominal input voltage UN(3 N ~ 415/240 V)
Input voltage range 1(N) ~ 40 V AC ... 415 V AC
3 (N) ~ 40 V AC ... 415 V AC
Maximum input voltage (3 N ~ 500/289 V)
Input current range 0.5 A ... 10 A (Connection terminal blocks: L1i and L1k)
Overload capacity 12 A permanent
Input resistance of voltage input ≥ 1 MΩ
Input resistance current input 5 mΩ
Min. switching threshold cos ϕ0.1 ... 0.99
Max. switching threshold cos ϕ0.2 ... 1
Maximum temperature coefficient ≤ 0.1 %/K
Setting range for response delay 0.1 s ... 40 s
Setting range for starting delay 1 s ... 100 s
Function Underload, overload, Window
Basic accuracy ± 5 % (At cos ϕ = 0.8)
Setting accuracy ≤ 5 % (At cos ϕ = 0.8)
Repeat accuracy ± 1.8 %
Recovery time 500 ms
Output data
Contact type 2 floating PDT contacts
Nominal insulation voltage 250 V AC (in acc. with IEC 60664-1)
Interrupting rating (ohmic load) max. 750 VA (3 A/250 V AC, module aligned, ≤ 5 mm spacing)
1250 VA (5 A/250 V AC, module not aligned, ≥ 5 mm spacing)
Output fuse 5 A (fast-blow)
Supply
Range of supply voltages 24 V AC ... 240 V AC -15 % ... +10 %
24 V DC ... 240 V DC -20 % ... +25 %
Frequency range 48 Hz ... 400 Hz
Nominal power consumption 4.5 VA (1.5 W)
General data
Mains type 1 and 3-phase
Service life mechanical Approx. 2 x 107 cycles
Service life, electrical 2 x 105 cycles at ohmic load, 1000 VA
Switching frequency max. 60 (per minute at 100 VA ohmic load)
max. 6 (per minute at 1000 VA ohmic load)
Operating mode 100% operating factor
2Ordering data
3 Technical data
EMD-FL-PF-400
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Degree of protection IP40 (housing) / IP20 (connection terminal blocks)
Pollution degree 2 (according to EN 50178)
Surge voltage category III, basic insulation (as per EN 50178)
Rated insulation voltage 300 V (According to EN 50178)
Assembly on TS 35 profile rail acc. to EN 60715
Mounting position Any
Width 22.5 mm
Height 113 mm
Length 90 mm
Type of housing Polyamide PA, self-extinguishing
Color green
Weight 160 g
Connection data
Conductor cross section, solid 0.5 mm² ... 2.5 mm²
Conductor cross section, stranded 0.25 mm² ... 2.5 mm²
Stripping length 8 mm
Type of connection Screw connection
Tightening torque 1 Nm
Ambient conditions
Ambient temperature (operation) -25 °C ... 55 °C
-25 °C ... 40 °C (corresponds to UL 508)
Ambient temperature (storage/transport) -25 °C ... 70 °C
Permissible humidity (operation) 15 % ... 85 %
Climatic class 3K3 (in acc. with EN 60721)
Conformance / approvals
Conformity CE compliant
UL, USA / Canada UL/C-UL listed UL 508
Conformance with EMC directive 2004/108/EC
Immunity to interference according to EN 61000-6-2
Emitted interference according to EN 61000-6-4
Conformance with LV directive 2006/95/EC
Electronic equipm. for electrical power installations according to EN 50178
General data (Continued)
4Block diagram
L1I
L2
L3
L1K
A1 A2
16 26
15 25
18 28
U = 24...240 V AC/DC
EMD-FL-PF-400
102914_en_02 PHOENIX CONTACT 4
5Safety notes
WARNING: Risk of electric shock
Never carry out work when voltage is present.
6Structure
A1 L1K 15
L1 L2 L3
16 18 A2
EMD-FL-PF-400
MAX
DELAY (s)
U/t
REL
0,1 40
COS
jMIN
COS
jMAX
.1
.2
.4
.4
.6
.6
.99
1
.8
.8
.9
.9
MIN
25 26 28
1
5
10 50
100
START(s)
I=O
Power factor monitor
310
7
FUNCTION
O
OL
UL
U
WWL
1
2
3
4
5
78910
6
11
1"U/t" LED: Supply voltage and starting override
2"MAX" LED: Upper threshold value
3"MIN" LED: Lower threshold value
4"I=0" LED: Load switched off
5"REL" LED: Output relay
6"FUNCTION" rotary switch: Function selection
7"DELAY" potentiometer: Response delay
8"COSϕMIN" potentiometer: Lower threshold value
9"COSϕMAX" potentiometer: Upper threshold value
10 "START" potentiometer: Starting override
11 Universal snap-on foot for EN DIN rails
7 Installation
The module can be snapped onto all 35 mm DIN rails according to EN 60715.
An integrated wide-range power supply unit enables the connection of a supply voltage in the range from 24 V AC/DC to
240 V AC/DC.
WARNING: Risk of electric shock
Never carry out work when voltage is present.
EMD-FL-PF-400
102914_en_02 PHOENIX CONTACT 5
8Diagnostics
The LEDs indicate the following error states:
"U/t" LED (Green)
– LED ON: Supply voltage present
"MIN" and "MAX" LEDs (Red)
– LED flashes: Set delay time is running
– LED ON: Delay time has elapsed
– Both LEDs flash alternately: Lower set threshold value is greater than upper threshold value
"I=0" LED (Yellow)
– LED ON: Load is switched off, no current flow between L1i and L1k
"REL" LED (Yellow)
– LED ON: Output relay has picked up
– LED OFF: Output relay has dropped out
9 Connection examples
A1
25
L1K
26
15
28
L3
16
L2
18
L1i
A2
15 25
16 18 26 28
L1
L2
L3
24V~
~
0V
A1
25
L1K
26
15
28
L3
16
L2
18
L1i
A2
15 25
16 18 26 28
L1
L2
L3
N
Reset
3 ~ 400 V measuring range, without error memory,
24 V AC supply voltage, IN<10A
3 ~ 400 V measuring range, with error memory,
230 V AC supply voltage, IN<10A
EMD-FL-PF-400
102914_en_02 PHOENIX CONTACT 6
A1
25
L1K
26
15
28
L3
16
L2
18
L1i
A2
15 25
16 18 26 28
L1
N
A1
25
L1K
26
15
28
L3
16
L2
18
L1i
A2
15 25
16 18 26 28
L1
L2
L3
N
Reset
1 ~ 230 V measuring range, without error memory,
230 V AC supply voltage, IN<10A
3 ~ 400 V measuring range, with error memory,
230 V AC supply voltage, IN>10A
10 Function
If an error is present when the monitoring module is activated,
output relay "R" remains dropped out and the LED for the
corresponding threshold value lights up.
For all functions the "MIN" and "MAX" LEDs flash alternately
if the minimum value selected is greater than the maximum
value.
The "FUNCTION" rotary switch is used to set the desired
function:
– O = Overload monitoring (OVER)
– OL = Overload monitoring with error memory (OVER +
LATCH)
– U = Underload monitoring (UNDER)
– UL = Underload monitoring with error memory (UNDER +
LATCH)
– W = Monitoring of the area between thresholds MIN and
MAX (window function) (WIN)
– WL = Monitoring of the area between thresholds MIN and
MAX (window function) with error memory (WIN +
LATCH)
EMD-FL-PF-400
102914_en_02 PHOENIX CONTACT 7
U
LED U/t
LED MAX
LED MIN
OL
R
Max
Min
OVER+LATCH
LED REL,
START DELAY DELAY START<DELAY
Overload Monitoring (OVER and OVER + LATCH)
If the measured power factor exceeds the value set at the
"MAX" controller, the set response delay (DELAY) starts (red
"MAX" LED flashes). After the delay time has elapsed (red
"MAX" LED is ON), output relay "R" drops out (yellow "REL"
LED is OFF). If the measured power factor falls below the
value set at the "MIN" controller (red "MAX" LED is OFF),
output relay "R" picks up again (yellow "REL" LED is ON).
If the error memory has been activated (OVER + LATCH) and
the measured power factor has exceeded the value set at the
"MAX" controller for longer than the set response delay,
output relay "R" does not pick up if the power factor falls
below the value set at the "MIN" controller. Once the error has
been reset (supply voltage interrupted, e.g., using an external
button), output relay "R" picks up when the supply voltage is
applied again and the measuring cycle starts again once the
set starting override (START) has elapsed.
U
LED U/t
LED MAX
LED MIN
UL
R
Max
Min
UNDER+LATCH
LED REL,
START DELAY DELAY START<DELAY
Underload Monitoring (UNDER and UNDER + LATCH)
If the measured power factor falls below the value set at the
"MIN" controller, the set response delay (DELAY) starts (red
"MIN" LED flashes). After the delay time has elapsed (red
"MIN" LED is ON), output relay "R" drops out (yellow "REL"
LED is OFF). If the measured power factor exceeds the value
set at the "MAX" controller, output relay "R" picks up again
(yellow "REL" LED is ON).
If the error memory has been activated (UNDER + LATCH)
and the measured power factor has fallen below the value set
at the "MIN" controller for longer than the set response delay,
output relay "R" does not pick up if the power factor exceeds
the value set at the "MAX" controller. Once the error has been
reset (supply voltage interrupted, e.g., using an external
button), output relay "R" picks up when the supply voltage is
applied again and the measuring cycle starts again once the
set starting override (START) has elapsed.
U
LED U/t
LED MAX
LED MIN
WL
R
Max
Min
WIN+LATCH
LED REL,
START DELAY DELAY<DELAY
Window Function (WIN)
Output relay "R" picks up (yellow "REL" LED is ON) if the
measured power factor exceeds the value set at the "MIN"
controller. If the measured power factor exceeds the value set
at the "MAX" controller, the set response delay (DELAY)
starts (red "MAX" LED flashes). After the delay time has
elapsed (red "MAX" LED is ON), output relay "R" drops out
(yellow "REL" LED is OFF).
The output relay picks up again (yellow "REL" LED is ON) if
the measured power factor falls below the maximum value
again (red "MAX" LED is OFF). If the measured power factor
falls below the value set at the "MIN" controller, the set
response delay (DELAY) starts (red "MIN" LED flashes). After
the delay time has elapsed (red "MIN" LED is ON), output
relay "R" drops out (yellow "REL" LED is OFF).
EMD-FL-PF-400
102914_en_02 8
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: +49-(0) 5235-3-00
PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: +717-944-1300
www.phoenixcontact.com
U
LED U/t
LED MAX
LED MIN
WL
R
Max
Min
WIN+LATCH
LED REL,
START DELAY DELAY STARTSTART
Window Function (WIN + LATCH)
If the error memory has been activated (WIN + LATCH), an
error that has occurred must be reset by interrupting the
supply voltage (e.g., using an external button). Output relay
"R" then picks up when the supply voltage is applied again
and the measuring cycle starts again once the set starting
override (START) has elapsed.
U
LED U/t
LED MAX
LED MIN
LED I=0
R
Max
Min
LED REL,
START START<DELAY
Detecting Switched Off Loads
If the current flow between L1i and L1k is interrupted (yellow
"I=0" LED is ON) and no stored errors are present, output
relay "R" picks up or remains picked up (yellow "REL" LED is
ON). When the current flow is present again, the measuring
cycle starts again once the set starting override (START) has
elapsed.
