Control circuit
36
INSTALLATION AND WIRING
2.6 Control circuit
2.6.1 Details on the control circuit terminals
Input signal function of the terminals in can be selected by setting Pr.178 to Pr.196 (I/O terminal function selection).
For the details of the control circuit terminal function selection, refer to the FR-F800 Instruction Manual (Detailed).
Input signal
Type
Terminal
symbol
Common Terminal name Terminal function description Rated specification
Contact input
STF
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
STR Reverse rotation start
Turn ON the STR signal to
start reverse rotation and
turn it OFF to stop.
STP
(STOP)
Start self-holding
selection
Turn ON the STP (STOP) signal to self-hold the start
signal.
RH, RM,
RL
Multi-speed selection
Multi-speed can be selected according to the
combination of RH, RM and RL signals.
JOG
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.
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
RT
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
MRS Output stop
Turn ON the MRS signal (2ms or more) to stop the
inverter output.
Use this signal to shut off the inverter output when
stopping the motor with an electromagnetic brake.
RES 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.
AU
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.
CS
Selection of automatic
restart after
instantaneous power
failure
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.
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