Lenze SCF frequency inverter - Manual (Page 19)

Lenze 13466146 EDBSF01 v24 EN
19
Installation 3
3.3.1 Wiring for Single Phase or Three Phase Input
If the drive is rated for single and three phase input (SF200Y models), wire to terminals L1 and L2 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 (see 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.
3.4 SCF Power Wiring Diagram
3 PHASE
AC MOTOR
DC BUS
VOLTAGE
OUTPUT (ALL SERIES)
T1 T2 T3 B- B+
+
SINGLE PHASE INPUT
(SF200Y SERIES)
L1 L2 L3
THREE PHASE INPUT
(SF200, SF200Y, SF400,
AND SF500 SERIES)
L1 L2 L3
4.5 lb-in / 0.5 Nm
0.24 in / 6 mm
10 lb-in / 1.2 Nm
0.35 in / 9 mm
18 lb-in / 2.0 Nm
0.5 in / 13 mm
15 - 30 HP
(11 - 22 kW)
7.5 - 10 HP
(5.5 - 7.5 kW)
0.25 - 5 HP
(0.37 - 3.7 kW)
STOP!
DO NOT connect incoming AC power to output terminals T1, T2, T3, or terminals B+,
B-! Severe damage to the drive will result.
NOTE
• WIRE AND GROUND IN ACCORDANCE WITH NEC OR CEC, AND ALL APPLICABLE LOCAL
CODES.
• Motor wires MUST be run in a separate steel conduit away from control wiring and
incoming AC power wiring.
• Do not install contactors between the drive and the motor without consulting Lenze
AC Tech Corporation for more information. Failure to do so may result in drive damage.
• Use only UL and CSA listed and approved wire.
• Minimum wire voltage rating is 300 V for 120, 208, and 240 Vac systems, and 600 V
for 400 and 480 Vac systems.
• Wire gauge must be based on a minimum of 125% of the rated input/output current
of the drive, and a minimum 75°C insulation rating. Use copper wire only.