Lenze TCF Series - Manual (Page 18)

8 POWER WIRING
DANGER!
Hazard of electrical shock!
Capacitors retain charge after power is removed . Disconnect incoming
power and wait until the voltage between terminals B+ and B- is 0 VDC
before servicing the drive .
Note drive input and output current ratings and 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 .
Refer to Section 9 - TCF POWER WIRING DIAGRAM for information on torque and wire
stripping requirements for power wiring .
Input fusing and a power disconnect switch or contactor MUST be wired in series with
terminals L1, L2, and L3 for three phase input models . For 208/240 Vac single phase input
models, use terminals L1 and L3 . 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 WIRING FOR SINGLE PHASE OR THREE PHASE INPUT
If the drive is rated for single and three phase input (TF200Y models), wire to terminals L1
and L3 for single phase input, or wire to terminals L1, L2, and L3 for three phase input .
If the drive is rated for three phase input, wire the input to terminals L1, L2, and L3 .
All three power output wires, from terminals T1, T2, and T3 to the motor, must be kept tightly
bundled and run 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 04 - 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 .
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