HDU Series Voltage Control ES Crouzet HDU Displays the current value and the preset on LCD * Controls AC & DC signals (auto Detection) Overload or underload selectable * Threshold and Hysteresis adjusted separately Memory function in case of fault Delay on threshold crossing UL / cUL listed CSA recognized CE compliant OPERATING PRINCIPLE: Controls AC and DC voltages: Part Numbers HDU's are designed to control an AC or DC voltages. The 24VDC HDUL .2-60V 84872301 threshold and hysteresis are adjusted separately via 2 potentio- 24 VAC HDUL .2-60V 84872302 meters on the front face. Prior to power up, the operating mode 120 VAC HDUL .2-60V 84872304 should be selected using the 4 dip switches located on the side of 230 VAC HDUL _ .2-60V 84872305 the unit (with/without memory, overload/underload and the specific 24VDC HDUH 10 - 600 V 84872306 operating range, 500mA or 10A). The supply voltage is applied to A1 24 VAC HDUH 10-600 V 84872307 and A2. The monitored signal is connected in parallel to terminals E1 120 VAC HDUH 10-600 V 84872309 E2 or E3 (depending on the range selected) and terminal M. 230 VAC HDUH 10-600 V 84872310 TYPE HDU-L HDU -H Specifications: INPUTS E1-M:0.2-2V E1i-M:15-150V Input Power 24VDC, 24, 110, 230 VAC E2-M : 1-10 V E2-M : 30 - 300 V E3-M : 6-60 V E3-M : 60 - 600 V Max. power consumption + 15%, 50/60 Hz 3VA at 230,120, 24VAC Products and specifications subject to change without notice. Order/Technical Support - Tel: (800) 677-5311 / FAX (800) 677-3865 / www.crouzet-usa.com Input Resistance E1-M : 2K ohm E1-M : 100K ohm : 1W at 24VDC E2-M : 10K ohm E2-M : 300K ohm Frequency of measured signal (AC) 40-500 Hz E3-M:60K ohm E3-M: 600K ohm Setting accuracy - threshold +10% of selected threshold Max permanent V @ 20C Ei-M:4V E1-M : 200 V Hysteresis selection 5-50% of displayed threshold E2-M: 20V E2-M : 350 V Repeat Accuracy +.1% wiconstant parameters E3-M : 120 V E3-M : 650 V Delay on threshold crossing 0.1 to 3 sec. - adjustable Peak overload < 1ms @ 20C Ei-M:50V E1-M : 2KV Output SPDT E2-M : 100 V E2-M : 2KV Maximum current 5A resistive E3-M : 300 V E3-M : 2KV Minimum current 100mA Maximum Line Voltage 277Vdc / 480Vac Maximum switching voltage 250VAC Wiring Diagram Electrical life of relay 500K operations at full load ~ Mechanical life of relay 5000K operations Contact material AgCdO Case Material Self extinguishing a Protection Casing IP 40 Terminal IP20 Housing IP 50 : o Operating Temperature -4F to140F(-20C to 60C) 4 : Storage temperature -22F to158F(-30C to 70C) Aza] [LM laa Relative Humidity (No condensation) 93% +2% -3% BC b Weight 11.2 oz. (320g) eG Yow 12 Threshold display accuracy +/-10% Display Relay Status Over or Under mode = Memory function @ AC or DC voltage to be controlled Type of signal AC or DC Measurement overflow Dimensions Inches (mm) 260" 1a immunity to power cuts 10mS it 188 F <_S +, Delay on pick-up 500mS | I | |\pesene Insulation Category Ill, pollution degree 2 IAW IEC 664-1 & VDE 0110 | wal | Come 4Kv2 L ae ese Note: 24VDC input version. The input voltage and the measured current must be from separate sources. The | ese Tne "negative" poles of the auxilliary power supply and the ool 2 measurement circuit are connected internally HDU Series Voltage Control &S Crouzet HDU cont. Operating Principles The HDU is designed to control AC or DC voltages. The threshold and Hysteresis can be adjusted independently of each other via the 2 potentiometers on the front face. Before appying power you must select the operating mode using the dip switches located. on the bottom side of the relay ( with/without memory, over/under load). The mode is validated when power is applied to the relay. The voltage to be monitored is connected between terminals E1, E2, E3 and M depending on the range. See Settings Voltage control without Memory When the value of the AC / DC voltage reaches the set threshold value the output relay changes state at the end of the time delay T1 ( contacts 11 & 14 open). The relay changes state again (contacts 11 & 14 closed) when the voltage falls below the threshold minus the hysteresis in the overload position, or above the threshold e 6 plus the hsysteresis in the underload position. Notes The threshold crossing time delay T1, which is adjusted on the front face from 0.1 to 3s ensures immunity to transient voltages and other interferences, preventing the output relay from chattering. In the "underload position the absolute value of the Hysteresis cannot be more than the maximum value of the measured range. 9 @ Threshold @ Oper. R Overload $=@ Threshold @ Oper. R Underload Hysteresis Voltage control with Memory When the value of the AC / DC current reaches the set threshold value the output relay changes state at the end of the time delay T1 ( contacts 11 & 14 open) and remains in that condition. The relay is reset by disconnecting power from terminals A1 .& A2. The memory mode allows for the detection of over or under voltage values for short durations. @ Threshold @ Oper. R Overload Threshold @ Oper. R Underioad Hysteresis O Memory oo oes Settings The setting switches can be found on the lower side of the relay. The switch settings for the different modes can be foundSquares indicate switch positions right side of the relay in the lower left hand corner. O El O El Oo El Oo El O E2 O E2 oO w/o oO With oO w/0 oO With O} wo Ll} With Memory Memory Memory Memory Memory Memory O Under O Under O Over O Over O Under O Under oO O Oo 0 Oo O] O E2 O E2 Ol} gs Ol} gs; OO} B3 O E3 O| wo | With oO wid oO With oO wid 0 With Oo Memory Memory gq Memory Cy | Memory Oo Memory oO Memory Over O Over Under Under Over Over Oo Oo Oo Oo Oo 0 Products and specifications subject to change without notice. Order/Technical Support - Tel: (800) 677-5311 / FAX (800) 677-3865 / www.crouzet-usa.com