| Position |
Pin |
Function |
| 1 |
+28 Vdc |
Power supply for the device |
| 2 |
DC return |
28 Vdc power supply return |
| 3 |
CMD |
Control signal for contactor. [1] |
| 4 thru 7 |
PRG1, PRG 2, PRG 3, PRG 4 |
Trip programming pins |
| 8 thru 10 |
EXT_PHA, EXT_PHB, EXT_PHC |
Current input pins [2] |
| 11 |
EXT_RET |
Current input reference |
| 12 thru 14 |
I_PHA, I_PHB, I_PHC |
Current status pins |
| 15 |
0V |
Ground reference |
| 16 thru 17 |
Latch status |
Signal line reporting the load current condition |
| 18 thru 25 |
N/C |
Contactor status |
[1] A low-level signal causes contactor to close
[2] The current level is used to compare with the internal current measured at the source side of each phase
TYPICAL SCHEMATIC
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