Specifications

SED2 VFD Startup, Operation, and Maintenance Manual
58 Siemens Building Technologies, Inc.
( ) 5. Inspect the security of the input power wiring, ground
connections, motor wiring, and all control circuit
connections, as identified in the SED2 documentation.
IMPORTANT: Verify that the cross–section and length of
the input power and motor cables are
correct.
IMPORTANT: Confirm that the input power connects to
the SED2 input terminals: (L1, L2, L3)
and NOT to the output motor terminals:
(U, V, W).
IMPORTANT: Verify that all input power wires (L1, L2, L3)
and motor wires (U, V, W) are securely
tightened down to their lugs. Loose wire
connections may cause problems at any
time, and are not covered under warranty.
( ) 6. Review the installer’s as-wired schematic. Determine where
the motor safety circuit is connected. Verify that the
customer’s emergency contacts are properly terminated in
the SED2 safety shutdown circuit or bypass option.
Verify that all other field-installed wires are correctly
terminated (including the shields).
( ) 7. Verify the motor is free to move mechanically.
( ) 8. For pump applications, verify the medium (such as water) is
available (no dry run).
( ) 9. Record the motor(s) nameplate information:
Voltage: Service Factor:
Efficiency %: Full Load Amps (FLA):
RPM: Hp:
( ) 10. Verify that the input power voltage matches the rating of the
SED2.
( ) 11.
Verify that the motor is wired for the application voltage.
( ) 12.
IMPORTANT: Verify that the motor rated full load amps
(FLA) does NOT exceed the rated output
current of the SED2 controlling it.
When multiple motors are simultaneously operated by the
SED2, the sum of all motor rated FLA values must be less
than or equal to that of the SED2 controlling them.