21
§
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
2 sec.
2 sec.
15msec
Time needed
for Inverter to
detect motor
free run speed
Note:
(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
detect if it conforms the frequency of free run, if the two frequencies are equal,
the inverter output rated voltage then. The purpose is to prevent over current to
happen.
Содержание CT-2000ES
Страница 7: ...7 G Control circuit...
