50
2. INSTALLATION AND WIRING
2.6 Control circuit
2.6 Control circuit
2.6.1 Details on the control circuit terminals
Input signal
Type Terminal
symbol
Common Terminal name Terminal function description Rated
specification
Refer
to
page
Contact input
STF
*1
SD (sink
(negative
common))
PC
(source
(positive
common))
Forward rotation
start
Turn ON the STF signal to start
forward rotation and turn it OFF to
stop.
When the STF
and STR signals
are turned ON
simultaneously,
the stop
command is
given.
Input resistance
4.7 k
Voltage when
contacts are open:
21 to 27 VDC
When contacts are
short-circuited:
4 to 6 mADC
550
STR
*1
Reverse rotation
start
Turn ON the STR signal to start
reverse rotation and turn it OFF to
stop.
STP
(STOP)
*1
Start self-holding
selection
Turn ON the STP (STOP) signal to self-hold the start
signal.
550
RH, RM,
RL
*1
Multi-speed
selection
Multi-speed can be selected according to the
combination of RH, RM and RL signals.
226
JOG
*1
Jog mode
selection
Turn ON the JOG signal to enable JOG operation (initial
setting) and turn ON the start signal (STF or STR) to
start JOG operation.
224
Pulse train input Terminal JOG is also used as a pulse train input
terminal. To use as a pulse train input terminal, change
the Pr.291 setting. (maximum input pulse: 100k pulses/
s)
Input resistance
2 k
When contacts are
short-circuited:
8 to 13 mADC
222
RT
*1
Second function
selection
Turn ON the RT signal to enable the second function.
When the second function such as "second torque
boost" and "second V/F (base frequency)" is set,
turning ON the RT signal enables the selected function.
Input resistance
4.7 k
Voltage when
contacts are open:
21 to 27 VDC
When contacts are
short-circuited:
4 to 6 mADC
348
MRS
*1
Output stop Turn ON the MRS signal (2 ms or more) to stop the
inverter output.
Use this signal to shut off the inverter output when
stopping the motor with an electromagnetic brake.
346
RES
*1
Reset Use this signal to reset a fault output provided when a
protective function is activated. Turn ON the RES signal
for 0.1 s or longer, then turn it OFF.
In the initial setting, reset is set always-enabled. By
setting Pr.75, reset can be set enabled only at fault
occurrence. The inverter recovers about 1 s after the
reset is released.
162
AU
*1
Terminal 4 input
selection
The terminal 4 function is available only when the AU
signal is turned ON.
Turning the AU signal ON makes terminal 2 invalid.
318
CS
*1
No function Use Pr.186 CS terminal function selection for
function assignment.
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