Mitsubishi Electric FR-F800 Series Instruction Manual page 408

*8 MC operation is as shown below.
○
×
—
No change
• The output signals are as shown below.
Signal
MC1
MC2
MC3
 Electronic bypass operation sequence
• Example of operation sequence without automatic bypass sequence (Pr.139 = "9999")
Power supply
Operation interlock
(MRS)
Inverter run command
(STF)
Inverter/commercial
power supply (CS)
Inverter input side MC
(MC1)
Inverter output side MC
(MC3)
MC for commercial
power supply operation
(MC2)
Each timer
Operating status
(motor speed)
• Example of operation sequence with automatic bypass sequence (Pr.139 ≠ "9999", Pr.159 = "9999")
STF
Output frequency Pr.139
Frequency command
Actual motor speed
INV
MC3
operation
Commercial
MC2
power supply
operation
A : Pr.136 MC switchover interlock time
C : Pr.57 Restart coasting time
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Notation
ON
OFF
During inverter operation: MC2-OFF, MC3-ON
During commercial power supply operation: MC2-ON, MC3-OFF
The operation status before changing the signal state to ON or OFF is held.
Applied terminal
(Pr.190 to Pr.196 setting)
17
18
19
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Off only at inverter alarm
OFF
ON
OFF
ON
OFF
Pr.57
INV
operation
ON
OFF
ON
OFF
ON
OFF
C A
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MC operation
Operation output signal of the magnetic contactor MC1 on the inverter's input side.
Operation output signal of the magnetic contactor MC2 for the commercial power
supply operation.
Operation output signal of the magnetic contactor MC3 on the inverter's output side.
Pr.137
Pr.58
Pr.136
Pr.136 Pr.57
Bypass
INV
Coasting Coasting
operation
operation
A
B : Pr.137 Start waiting time
D : Pr.58 Restart cushion time
Description
ON : Operation enabled
OFF: Operation disabled
ON : Forward rotation
OFF: Stop
ON : Inverter operation
OFF: Commercial power supply operation
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
Stop
Time
Time
B C D
5.11 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
407
5. PARAMETERS