SED2 VFD Electronic Bypass Option Operating Instructions
SED2 VFD
SED2 VFD
CONTROLLER
BOARD
CONTROL WIRING (DIGITAL INPUTS/ OUTPUTS) VIA
2 KNOCKOUTS 
TRANSFORMER
OUTPUT
CONTACTOR
BYPASS
CONTACTOR
MOTOR
OVERLOAD
MOTOR
| COMMUNICATIONS | |
| WIRING (P1) VIA | |
| 1 KNOCKOUT | |
| INPUT | |
J2 | CONTACTOR | |
(OPTIONAL) | ||
| ||
J1 |
| |
| REACTOR | |
| (OPTIONAL) | |
| POWER FUSES | |
| (OPTIONAL) | |
| GROUND LUGS | |
| DISCONNECT | |
| SWITCH | |
| (OR OPTIONAL | |
| CIRCUIT BREAKER) | |
T1T2T3 | L1L2L3 |
CONTROLLER
BOARD
CONTROL WIRING (DIGITAL INPUTS/ OUTPUTS) VIA
2 KNOCKOUTS 
TRANSFORMER
OUTPUT
CONTACTOR
BYPASS
CONTACTOR
MOTOR
OVERLOAD
MOTOR |
J2 |
|
J1 |
|
T1T2T3 | L1L2L3 |
COMMUNICATIONS WIRING (P1) VIA
1 KNOCKOUT
INPUT
CONTACTOR (OPTIONAL)
REACTOR
(OPTIONAL)
POWER FUSES
(OPTIONAL)
GROUND LUGS
DISCONNECT
SWITCH
(OR OPTIONAL CIRCUIT BREAKER)
VFD0111R2 | WIRING |
| |
| VIA |
| KNOCKOUT |
INPUT |
POWER |
WIRING VIA |
KNOCKOUT |
VFD0112R1 | WIRING |
VIA | |
KNOCKOUT | |
|
INPUT POWER
WIRING VIA KNOCKOUT
Figure 10. Routing of Power and Control Wiring
for Frame Sizes A and B.
Figure 11. Routing of Power and Control
Wiring for Frame Sizes C, D, and E.
| MOTOR | GROUND |
|
|
| LUGS (2) |
|
| |
| WIRING VIA |
|
| |
|
| INPUT POWER |
| |
| KNOCKOUT |
|
| |
|
|
| WIRING VIA |
|
|
|
| KNOCKOUT | SED2 |
|
|
|
| |
| DISCONNECT SWITCH |
|
| VFD |
|
|
|
| |
| (OR OPTIONAL |
|
|
|
| CIRCUIT BREAKER) | T3T2T1 | L3L2L1 |
|
|
|
| ||
| MOTOR |
|
|
|
| OVERLOAD |
|
|
|
| BYPASS |
|
|
|
| CONTACTOR |
|
|
|
| OUTPUT | J2 |
|
|
| CONTACTOR |
|
|
|
|
| J1 |
|
|
| CONTROLLER |
|
|
|
| BOARD |
|
|
|
| TRANSFORMER |
|
|
|
| INPUT |
|
|
|
VFD0113R1 | CONTACTOR |
|
| COMMUNICATIONS |
(OPTIONAL) |
|
| WIRING (P1) VIA | |
|
|
| 1 KNOCKOUT | |
POWER FUSES |
| REACTOR |
| |
(OPTIONAL) |
|
| ||
| (OPTIONAL) |
| ||
|
|
|
Figure 12. Routing of Power and Control Wiring for Frame Size F.
14 | Siemens Building Technologies, Inc. |
