Shihlin electric SF-GT Series User Manual

Parameter Description
Parameters
161
frequency operation switchover signal CS is selected.
Warning:
1. MC1 and MC2 must be mechanically interlocked; the running direction of the
inverter operation and the commercial power supply operation should be
consistent.
2. Use the commercial power operation switchover function under the external
operation mode.
3. STF/STR is effective when the CS signal is ON.
Here are some typical sequence diagrams for the switchover of the commercial power
supply frequency:
1. No action sequence for the automatic switchover sequence (P.249=99999).
MRS
STF
CS
MC 2
MC1
P.247
P.247
P.248
P.57
P.58
Power supply
Inverter
operation
Free
operation
the commercial
power-supply
operation
stop
The motor speed
Free
operation
Inverter
operation
2. With action sequence for the automatic switchover sequence
(P.249≠99999, P.250=99999).
time
A A B
C
D
time
MC2
MC1
STF
P.249
Setting
frequency
Output
frequency
Actual
motor
speed

Shihlin electric SF-GT Series Specifications

General

Brand	Shihlin electric
Model	SF-GT Series
Category	Inverter
Language	English