Wiring Connections - Siemens SED2 VFD NEMA Operating Instructions Manual

SED2 VFD NEMA Type 3R/3RHE Bypass Operating Instructions

Wiring Connections

NOTE:
1. Do not mix control, motor, and input wiring in the same conduit. Run separate wire types
with maximum possible separation.
2. Route shielded, twisted pair, 24-gauge minimum cable for control wiring in separate
conduit into enclosure (Figure 11 through Figure 13). Connect control wiring per job
drawings and Figure 9.
NOTES:
•
Terminate shield at control device.
•
Control wiring is 12 to 26 AWG and tightening torque is 4.4 lb-in (0.5 Nm).
3. If applicable, route communications wiring (P1) in separate conduit into enclosure (Figure
11 through Figure 13). Continue to route communications wiring to VFD and terminate
per SED2 VFD Startup, Operation, and Maintenance Manual, (125-3201).
4. Route motor wiring in separate conduit into enclosure (Figure 11 through Figure 13).
Connect motor wiring to motor overload and ground lug. See Tables 2 through 5 for wire
sizes and tightening torques.
5. Route input power wiring in conduit into enclosure (Figure 11 through Figure 13).
Connect input power wiring to disconnect switch and ground lug or to circuit breaker and
ground lug. See Table 3 through Table 6 for wire sizes and tightening torques.
12
See Figure 8 through Figure 13 for all NEMA Type 3R/3RHE Bypass wiring.
WARNING:
Failure to follow appropriate VFD wiring practice can result in sub-standard
system operation and may damage control components.
CAUTION:
If applicable, route communications wiring with maximum separation from all
other wiring. If wiring through bypass enclosure, run communication wiring
with maximum separation possible from all other wiring.
WARNING:
Use only permanently wired input power connections.
Siemens Building Technologies, Inc.