Control Circuit Specifications; Control Circuit Terminals - Mitsubishi Electric FR-F720-0.75K to 110K Instruction 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 page 115.)
(1) Input signals
Terminal Terminal
Symbol Name
Forward
STF
rotation start
Reverse
STR
rotation start
Start self-
STOP holding
selection
RH, Multi-speed
RM, RL selection
Jog mode
JOG
selection
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
SD
transistor
common
(source)
24VDC power
supply common
External
transistor
common (sink)
(initial setting)
Contact input
PC
common
(source)
24VDC power
supply
26
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.
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. Inverter recovers about 1s
after the reset is released.
Terminal 4 is valid only when the AU signal is turned on. (The
frequency setting signal can be set between 0 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 page 141)
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.
Specifications
When the STF and
STR signals are turned
on simultaneously, the
stop command is given.
Input resistance
4.7kΩ
Voltage at
opening: 21 to
27VDC
Contacts at
short-circuited: 4
to 6mADC
Power supply
voltage range
19.2 to 28.8VDC
Permissible load
current 100mA
Rated
Refer to
115
115
115
115
115
115
115
160
104
115
- -- -- - -- -- -- - -- -- - -- —
30