Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Special operation Parameter
6 - 502
6.24.2 Commercial power supply-inverter switchover function (Pr. 57, Pr. 58,
Pr. 135 to Pr. 139, Pr. 159)
The complicated sequence circuit for commercial power supply-inverter switchover is built in the
inverter. Hence, merely inputting the start, stop or automatic switchover selection signal facil-
itates the interlock operation of the switchover magnetic contactor.
Pr. No. Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
57
Restart coasting time 9999
0
The following times are coasting
times.
00052 or less ........................... 0.5s,
00083 to 00250........................ 1.0s,
00310 to 01800........................ 3.0s,
02160 or more .......................... 5.0s
11
57
58
79
178–189
190–196
DC injection brake
operation time
Restart coasting
time
Restart cushion
time
Operation mode
selection
Input terminal
function selection
Output terminal
function selection
6.13.1
6.16.1
6.16.1
6.22.1
6.14.1
6.14.5
01800
or less
0.1
to
5s
Set the waiting time for inverter-trig-
gered restart after an instantaneous
power failure.
02160
or
more
0.1
to
30s
9999 No restart
58
Restart cushion time 1s 0 to 60s Set a voltage starting time at restart.
135
Commercial power-
supply switchover
sequence output
terminal selection
0
0
With commercial power-supply
switchover sequence
1
Without commercial power-supply
switchover sequence
136
MC switchover
interlock time
1s 0–100s
Set the operation interlock time of
MC2 and MC3.
137
Start waiting time 0.5s 0–100s
Set the time slightly longer (0.3 to
0.5s or so) than the time from when
the ON signal enters MC3 until it actu-
ally turns on.
138
Commercial power-
supply operation
switchover selection
at an alarm
0
0
Inverter output is stopped (motor
coast) at inverter fault.
1
Operation is automatically switched to
the commercial power-supply opera-
tion at inverter fault. (Not switched
when an external thermal error occurs)
139
Automatic switchover
frequency between
inverter and commer-
cial power-supply
operation
9999
0–60Hz
Set the frequency to switch the
inverter operation to the commercial
power-supply operation.
Inverter operation is performed from a
start until Pr. 139 is reached, and
when the output frequency is at or
above Pr. 139, inverter operation is
automatically switched to commercial
power supply operation.
9999 Without automatic switchover
159
Automatic switchover
ON range between
commercial power-
supply and inverter
operation
9999
0–10Hz
Valid during automatic switchover
operation (Pr. 139
≠
9999)
When the frequency command
decreases below (Pr. 139 to Pr. 159)
after operation is switched from
inverter operation to commercial
power-supply operation, the inverter
automatically switches operation to the
inverter operation and operates at the
frequency of frequency command.
When the inverter start command
(STF/STR) is turned off, operation is
switched to the inverter operation also.
9999
Valid during automatic switchover
operation (Pr. 139
≠
9999)
When the inverter start command
(STF/STR) is turned off after operation
is switched from the inverter operation
to commercial power-supply inverter
operation, operation is switched to the
inverter operation and the motor
decelerates to stop.