Mitsubishi Electric F700 Instruction Manual page 202

(2) Commercial power supply-inverter switchover operation sequence
⋅ Operation sequence example when there is no automatic switchover sequence (Pr. 139 = "9999")
ON
Power supply
OFF
Operation interlock ON
(MRS) OFF
Inverter Run command ON
(STF) OFF
Inverter/commercial
ON
power-supply
OFF
switchover (CS)
ON
Inverter input side MC
(MC1)
OFF
ON
Inverter output side MC
(MC3)
OFF
MC for commercial
ON
power-supply
OFF
operation (MC2)
Each timer
Operating status
(motor speed)
⋅ Operation sequence example when there is automatic switchover sequence (Pr. 139 ≠ "9999", Pr. 159 = "9999")
ON
STF
OFF
Output frequency Pr.139
Frequency command
Actual motor speed
INV
ON
MC3
operation
OFF
Commercial
ON
power-
MC2
OFF
supply
operation
A : Pr.136 MC switchover interlock time
C : Pr.57 Restart coasting time
⋅ Operation sequence example when there is automatic switchover sequence (Pr. 139 ≠ "9999", Pr. 159 ≠ "9999")
ON
STF
OFF
Output frequency Pr.139
Frequency command
Actual motor speed
INV
ON
MC3
operation
OFF
Commercial
ON
power-
MC2
OFF
supply
operation
A : Pr.136 MC switchover interlock time
C : Pr.57 Restart coasting time
Off only at inverter alarm
Pr.136
Pr.57
Commercial
INV
Coasting
power-
supply
operation
operation
C A
Pr.159
C A A B
B : Pr.137 Start waiting time
D : Pr.58 Restart cushion time
Special operation and frequency setting
ON : Operation enabled
OFF: Operation disabled
ON : Forward rotation
OFF: Stop
ON : Inverter operation
OFF: Commercial power-supply operation
Pr.137 Pr.58
Pr.136 Pr.57
INV
Coasting Stop
operation
A B
B : Pr.137 Start waiting time
D : Pr.58 Restart cushion time
C D A
Indicates the delay time until
the MC turns on (off).
Pr.136 MC switchover interlock time
Pr.137 MC3 start (waiting time)
Pr.57 reset time
Pr.58 Switchover cushion time
Time
Time
C D
Time
Time
A B C D
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