Mitsubishi Electric FR-A800, Instruction Manual

Page: 657 / 1042

Parameters (A) Application parameters
FR-A800 5 - 477
Operation
●
Procedure for operation
●
Signal operation after setting parameters
I002672E
Fig. 5-225: Operation procedure
Status MRS CS STF MC1 MC2 MC3 Remarks
Power ON
OFF
(OFF)
OFF
(OFF)
OFF
(OFF)
OFF
→
ON
(OFF
→
ON)
OFF
(OFF)
OFF
→
ON
(OFF
→
ON)
External operation
mode
(PU operation mode)
At start
(Inverter)
OFF
→
ON OFF
→
ON OFF
→
ON ON OFF ON
During constant-
speed operation
(commercial power
supply)
ON ON
→
OFF ON ON OFF
→
ON ON
→
OFF
MC2 turns ON after MC3
turns OFF.
Waiting time is 2 s (while
coasting).
For deceleration,
switched to the
inverter operation
(inverter)
ON OFF
→
ON ON ON ON
→
OFF OFF
→
ON
MC3 turns ON after MC2
turns OFF.
Waiting time is 4 s (while
coasting).
Stop ON ON ON
→
OFF ON OFF ON
Tab. 5-201: Signals after parameter setting
앫
Pr. 135 = "1" (open collector output terminal of inverter)
앫
Pr. 136 = "2.0 s"
앫
Pr. 137 = "1.0 s" (Set the time until MC3 is actually turned ON and the
inverter and motor are electrically connected. If the time is short, the
restart may not function properly.)
앫
Pr. 57 = "0.5 s"
앫
Pr. 58 = "0.5 s" (Always set this to switchover from the commercial power
supply operation to the inverter operation.)
Power supply ON
Setting the parameters
Start inverter operation
Constant-speed commercial
power supply operation
Deceleration (stop)
inverter operation