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Adjust and Function Specification
§Cd27 Motor running direction (Settable range 0-2)
Fix motor running direction to prevent mechanical damage.
Cd27=0 both forward, reverse directions available, stop before changing
direction.
Cd27=1 both forward and revise directions available, No stop required.
Cd27=2 only forward operation is available.
Cd27=3 only reverse operation is available.
§Cd28 Restart / Free run start (Settable range 0-3)
Cd28 Restart Free run start
0 No function No function
1 With function No function
2 No function With function
3 With function With function
1. Free run restart function:
When power supply failure occurs or voltage loss, there may be a malfunction on PCB
control circuit, this function is to return to the original setting of speed and
frequency after power recovery.
Power
Supply
External
Switch
Motor
Speed
Power Failure, Voltage loss
15msec
Time needed
for Inverter to
detect motor
free run speed
Note:
2 sec. 2 sec.
(1) Free run direction must be the same as setting direction.
(2) After power recovery, there is about 2 sec. delay time (motor frequency detect)
for start.
Restart after power recovery, the inverter will output a frequency signal first to
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