Control Circuit Specifications; Control Circuit Terminals - Mitsubishi Electric FR-A701 Instrucion Manual

Control circuit specifications

2.3 Control circuit specifications
2.3.1

Control circuit terminals

indicates that terminal functions can be selected using Pr. 178 to Pr. 196 (I/O terminal function selection) (Refer to chapter 4 of
the instruction manual (applied).)
(1) Input signals
Terminal Terminal
Symbol Name
Forward
STF
rotation start
Reverse
STR
rotation start
Start self-
STOP holding
selection
RH, Multi-speed
selection
RM, RL
Jog mode
selection
JOG
Pulse train
input
Second
RT function
selection
MRS Output stop
RES Reset
Terminal 4
input
selection
AU
PTC input
Selection of
automatic
CS restart after
instantaneous
power failure
Contact input
common (sink)
(initial setting)
External
transistor
SD
common
(source)
24VDC power
supply
common
External
transistor
common (sink)
(initial setting)
PC
Contact input
common
(source)
24VDC power
supply
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Description
Turn on the STF signal to start forward
rotation and turn it off to stop.
Turn on the STR signal to start reverse
rotation and turn it off to stop.
Turn on the STOP signal to self-hold the start signal.
Multi-speed can be selected according to the combination of RH,
RM and RL signals.
Turn on the JOG signal to select Jog operation (initial setting) and
turn on the start signal (STF or STR) to start Jog operation.
JOG terminal can be used as pulse train input terminal. To use as
pulse train input terminal, the Pr. 291 setting needs to be changed.
(maximum input pulse: 100kpulses/s)
Turn on the RT signal to select second function.
When the second function such as "second torque boost" and
"second V/F (base frequency)" are set, turning on the RT signal
selects these functions.
Turn on the MRS signal (20ms or more) to stop the inverter output.
Use to shut off the inverter output when stopping the motor by
electromagnetic brake.
Used to reset fault output provided when fault occurs.
Turn on the RES signal for more than 0.1s, then turn it off.
Initial setting is for reset always. By setting Pr. 75, reset can be set
to enabled only at fault occurrence. Recover about 1s after reset
is cancelled.
Terminal 4 is made valid only when the AU signal is turned on. (The
frequency setting signal can be set between 4 and 20mADC.)
Turning the AU signal on makes terminal 2 (voltage input) invalid.
AU terminal is used as PTC input terminal (thermal protection of
the motor). When using it as PTC input terminal, set the AU/PTC
switch to PTC.
When the CS signal is left on, the inverter restarts automatically at
power restoration. Note that restart setting is necessary for this
operation. In the initial setting, a restart is disabled.
(Refer to Pr. 57 Restart coasting time in chapter 4 of
instruction manual (applied).)
Common terminal for contact input terminal (sink logic) and terminal
FM.
When connecting the transistor output (open collector output),
such as a programmable controller, when source logic is
selected, connect the external power supply common for
transistor output to this terminal to prevent a malfunction caused
by undesirable currents.
Common output terminal for 24VDC 0.1A power supply (PC
terminal).
Isolated from terminals 5 and SE.
When connecting the transistor output (open collector output), such
as a programmable controller, when sink logic is selected, connect
the external power supply common for transistor output to this
terminal to prevent a malfunction caused by undesirable currents.
Common terminal for contact input terminal (source logic).
Can be used as 24VDC 0.1A power supply.
When the STF and STR
signals are turned on
simultaneously, the stop
Input resistance
command is given.
4.7kΩ
Voltage at opening:
21 to 27VDC
Contacts at short-
circuited: 4 to
6mADC
Input resistance
2kΩ
Contacts at short-
circuited: 8 to
13mADC
Input resistance
4.7kΩ
Voltage at opening:
21 to 27VDC
Contacts at short-
circuited: 4 to
6mADC
the
Power supply
voltage range 19.2
to 28.8VDC
Permissible load
current 100mA
Rated Refer to
Specifications page
88
*2
89
*2
*2
*2
*2
139
93
*2
*2
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