Toshiba Tosvert VF-A5 - Manual (Page 67)

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и г .
5 ¿Z Selection Parameters)
г г у ^ г
и и
и F C H C I Commercial power/lNV switching
Related parameters
Commercial/inverter switching output
Commerciai/inverter switching frequency
Output terminal selections
C C H G
F C H C
D f c O
flrSb
Auto-restart
(motor speed search)
O b I
These parameters allow the inverter to change from commercial power operation to inverter operation, and to
restart without having to stop the motor when restoring power after a momentary outage (in the coast-stop
state).
By setting the commercial power/lNV switching frequency ( | F C H C ~ 1 )• the inverter will accelerate, and then
automatically switch the motor to the commercial power source. Energy savings and quieter operation can be
realized when the motor is run directly from commercial power.
E C H O setting Function
a OFF
1 Automatic switching upon trip
E Switching at commercial/inverter switching frequency setting
3 Switching at commercial/inverter switching frequency
setting, automatic switching upon trip
An example of the commercial power/inverter switching wiring is shown below.
ucz
I t I
1 ь г
O t a
D b I
* Short circuit between ST and CC when using only the auto-restart function.
* Select motor speed search (|
f l c 5 b I inC
r - . F ) on ST make/break (commercial power switching)
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