SED2 VFD NEMA Type 3R/3RHE Bypass Operating Instructions
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16.
If motor rotation in bypass mode is correct, proceed to Step 17.
If motor rotation in bypass mode is NOT correct, check the following and perform as
described:
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17.
Verify that running at full speed will NOT damage the system.
Run the motor in bypass by turning the Drive-Off-Bypass switch to BYPASS.
Record all the phase voltages and currents at this time to ensure that they are balanced
and within ratings.
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18.
Turn the Drive-Off-Bypass switch to DRIVE and set panel to auto start/stop. Check
speed references from application specific devices for appropriate operation.
This completes the startup procedure for the SED2 with Bypass.
30
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Turn OFF the incoming power feed to the drive. Since the correct rotation in
drive mode was previously established, do not change any output wires at
motor.
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Instead, verify that power to the input device is OFF. Swap L1 & L2 on the
input side of the circuit breaker/disconnect switch. This will affect rotation in
the bypass operation only. Once connections are complete and tight, reapply
incoming power and repeat Step 15 to recheck the rotation direction.
Siemens Building Technologies, Inc.