L1(+)
L1 (+) for RPM is connected between M contactor and the DDC drive
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| R1 |
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| L1(+) |
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| R2 |
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| RPM |
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| R3 |
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| + 24 VDC | FAULT | SYNCH | RESET | FAN | READY | BRAKE LEVEL | INTERLOCK |
| 0 VDC | 0VDC |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
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RPM resistor
*
*EXTERNAL RESISTOR GRIDS WITH NORMALLY- CLOSED OVER TEMPERATURE SWITCH
IN THIS CONFIGURATION SET DIP
SWITCH - 3 “TERMINAL RESISTOR” TO
OFF POSITION ON RPM UNIT
FIGURE 3
400 AMP Single RPM Unit
The connection shown in FIGURE 3 is a single 400 AMP RPM Unit that is connected to the DDC bus after the M contactor. This is the simplest connection possible and requires no additional protective components.
Regenerative Power Module - September 2010
Page 12 of 20