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I/O PIN ELECTRICAL SPECIFICATIONS
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WE-X2YN
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POWER ON/RESET
| Normal conditions |
18 to 32 Vdc |
| Operating current at 28 Vdc |
120 mAmp max, contactor "open" |
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620 mAmp max, contactor "closed" |
CMD
| High level |
Min 7 to 10.5 Vdc |
| Low level |
Min 3 to 7.4 Vdc |
| Input histeresis |
1.3 to 4.3 Vdc |
| Pull-up resistor |
10 K W+/- 1% |
| Input capacitance |
<123nF |
| Input current |
<200 mAmp at 28 Vdc
<200 mAmp, max, at 0 Vdc |
TRIP LEVEL PROGRAMMABILITY
| Current status |
Phase A, B, C |
| Frequency PWM output |
666.7 Hz, +/- 3% |
| Low level duty cycle |
25% to 40% |
| High level duty cycle |
60% to 75% |
| Signal amplitude |
7.5 to 16.5 Vdc |
| Rise Time |
20 to 100: sec |
| Output resistance |
4 K W nominal |
LATCH STATUS
| High Level |
>100 K W to 28 Vdc |
| Low Level |
<100 W to DC return |
CONTACTOR STATUS
| Contactor closed |
115/200 Vac, 400 Hz, typical via 47 K W resistor |
| Contactor open |
Open circuit |
CONTROL LOGIC SPECIFICATION
| Anti-cycling hard fault protection |
Contactor control logic will initiate a trip within 25ms
if 28 VDC supply drops below 10 Vdc while load current is equal to or above 270 Amp +/- 6%.
The contactor will remain in the open state until a reset command sequence is provided.
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| Over current trip |
The unit can be configured for 60, 90, 120, 145, 174
Amp nominal rating. Contactor control logic will initiate a trip if load current exceed the I2t trip curve of Figure 1.
The contactor will remain in the open state until a reset command sequence is provided. |
| Differential protection trip |
The contactor control logic will initiate a trip within 25 ms if the differential current
of any supply and load side measurement exceeds 20 +/- 10 Amp. The contactor will remain
open until a reset command sequence is provided |
| Reset command |
The contactor clears, from the latched state, by removing 28 Vdc power (open circuit)
for a period greater than or equal to 250 ms. The contactor resets by removing CMD input (open circuit) for a period greater than or equal to 5 ms. |
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