13
SM01P
8
POWER WIRING
DANGER!
Hazard of electrical shock! Capacitors retain charge after power is removed . Before
servicing the drive, disconnect the incoming power and wait until the voltage between
terminals B+ and B- is 0 VDC .
Note the drive input and output current ratings and the check applicable electrical codes for
required wire type and size, grounding requirements, over-current protection, and incoming
power disconnect, before wiring the drive . Size conservatively to minimize voltage drop .
Input fusing and a power disconnect switch or contactor MUST be wired in series with
terminals L1 and L2/N (on single-phase input models), or terminals L1, L2, and L3 (on
three-phase input models) . This disconnect must be used to power down the drive when
servicing, or when the drive is not to be operated for a long period of time, but should not
be used to start and stop the motor .
Repetitive cycling of a disconnect or input contactor (more than once every two
minutes) may cause damage to the drive.
8.1
Input and Output Wiring
On single phase input models, wire the input power to terminals L1 and L2/N . On three
phase input models, wire the input power to terminals L1, L2, and L3 . Refer to Section 9,
SCL/SCM POWER WIRING DIAGRAM .
Keep all three power output wires, from terminals U, V, and W to the motor, tightly bundled
and run them in a separate conduit away from all other power and control wiring .
It is not recommended to install contactors or disconnect switches between the drive and
motor . Operating such devices while the drive is running can potentially cause damage
to the drive's power components . If such a device is required, it should only be operated
when the drive is in a STOP state . If there is potential for the device to be opened while
the drive is running, the drive must be programmed for COAST to stop (refer to Parameter
4 - STOP METHOD), and an auxiliary contact on the device must be interlocked with the
drive's run circuit . This will give the drive a stop command at the same time the device
opens, and will not allow the drive to start again until the device is closed .
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
