Mitsubishi Electric FR-A820-00046 Instruction Manual page 654

(A) Application parameters
● Operation of magnetic contactor (MC1, MC2, MC3)
Magnetic
contactor
MC1
MC2
MC3
Tab. 5-198: Operations of magnetic contactors
● The input signals are as shown below.
Signal
MRS
CS
STF
(STR)
OH
RES
X95/X96
Tab. 5-199: Input signals
For separated converter types, the X10 signal is assigned to the terminal MRS in the initial setting.
For the MRS signal, set "24" to any of Pr. 180 to Pr. 189 (input terminal function selection) to assign
the function to another terminal.
When the MRS signal is OFF, neither the commercial power supply operation nor the inverter
operation can be performed.
The CS signal operates only when the MRS signal is ON.
STF(STR) operates only when the MRS and CS signals are both ON.
5 - 474
Installation location
Between power supply and
inverter input side
Between power supply and
motor
Between inverter output side
and motor
Applied
Function
terminal
Selects whether or not
MRS
operation is available.
Inverter/commercial
power supply operation
CS
switchover
Inverter operation
command
STF
(Disabled during
(STR)
commercial power supply
operation)
Set one of
External thermal relay
Pr. 180 to Pr. 189
input
to "7".
RES
Operation status reset
Set "95" and
Converter unit fault /
"96" in any of
Converter unit fault
Pr. 180 to
(E.CPU, E.OHT)
Pr. 189.
During commercial
During inverter
power supply
operation
operation
Shorted Shorted
Shorted
Open Shorted
Operation
ON........ Electronic bypass
operation
available
OFF ...... Electronic bypass
operation not
available
ON........ Inverter operation
OFF ...... Commercial
power supply
operation
ON........ Forward rotation
(reverse rotation)
OFF ...... Stop
ON........ Motor normal
OFF ...... Motor fault
ON........ Reset
OFF ...... Normal operation
X95 signal OFF,
X96 signal OFF
Converter fault
(E.OHT, E.CPU)
X95 signal ON,
X96 signal ON
Converter normal
X95 signal OFF,
X96 signal ON
Converter fault (other
than E.OHT or E.CPU)
Parameters
Operation
During inverter fault
Open
(short by reset)
Open
(Selected by Pr. 138.
Open Always open when the
external thermal relay is
operating.)
Open
MC operation
MC2
MC1
⎯


×

×
 

×

×
⎯

× ×
Invariance ×
⎯

× ×
⎯

⎯
×
MC3
⎯
Invariance

×


⎯
×
Invariance
⎯
×
⎯
×