Toshiba TOSVERT VF-A7 Instruction Manual page 129

[Parameter setting]
Title
Output signal selection of
commercial power/inverter

switching
Commercial power/inverter

switching frequency
Inverter side switching

waiting time
Commercial power side

switching waiting time
Commercial power switching

frequency holding time
(*1)The trips which is followed by automatic switching are trips other than , , 
and .
[Timing chart]
Commercial power/inverter
switching frequency 
Frequency Reference
MC output for inverter operation
Commercial power/inv. Switching
output (P24-OUT1)
MC output for commercial
power operation
Commercial power/inv.
switching output (P24-OUT2)
Commercial power switching
signal
ST (standby) signal
Commercial power switching signal S3-CC ON Commercial power operation
Commercial power switching signal S3-CC OFF Inverter operation
Note) If ST-CC is opened,switching cannot be operated normally.
Title
Output signal selection of

commercial power/inverter switching
Commercial power/inverter switching

frequency
Inverter side switching waiting time

Commercial power side switching

waiting time
Commercial power switching

frequency holding time
Input terminal selection #7 (S3)

Output terminal selection #1 (OUT1)

Output terminal selection #2 (OUT2)

Caution!
Before switching to the commercial power, make sure that, when the motor takes power directly from
the commercial power, it rotates in the forward direction as defined for operation by the inverter.
Do not set the Reverse-run prohibition parameter  at  or  that forward run may be
prohibited. These settings make it impossible to switch the inverter to the forward run position,
and thus to switch from the inverter to the commercial power.
Function
: OFF
: Automatic switching in case of trip
: Commercial power switching frequency setting
enabled
: Both ( + )
  [Hz]
[Model dependent]  [s]
  [s]
  [s]
Commercial power switching
freq. holding time 
Commercial power side switching
waiting time
Function
F-33
Adjustment range

ON
ON
ON
Adjustment range
 
  [Hz]
[Model dependent]
 [s]
  [s]
  [s]
 
 
 
Default setting


Model
dependent


Detecting time
Inverter side switching
waiting time 
Setting value
 or 
Power source frequency, etc.
Model dependent


: (Commercial power
/inverter switching)
: (Commercial power
/inverter switching output #1)
: (Commercial power
/inverter switching output #2)