Control Circuit; Details On The Control Circuit Terminals - Mitsubishi Electric FR-A820-00046 Instruction Manual

Control circuit

2.6 Control circuit
2.6.1

Details on the control circuit terminals

Input signal function of the terminals in
to Pr. 196 (I/O terminal function selection). (Refer to page 5-439.)
Input signal
Terminal
symbol
STF
STR
STP
(STOP)
RH, RM, RL
JOG
RT
MRS
RES
AU
CS
SD
Tab. 2-13:
2 - 44
Terminal name Terminal function description
Turn ON the STF signal to start
Forward rotation
forward rotation and turn it OFF to
start
stop.
Turn ON the STR signal to start
Reverse rotation
reverse rotation and turn it OFF to
start
stop.
Start self-holding Turn ON the STP (STOP) signal to self-hold the start
selection signal.
Multi-speed Multi-speed can be selected according to the
selection combination of RH, RM and RL signals.
Turn ON the JOG signal to enable JOG operation
Jog mode selection (initial setting) and turn ON the start signal (STF or
STR) to start JOG operation.
Terminal JOG is also used as a pulse train input
terminal. To use as a pulse train input terminal, change
Pulse train input
the Pr. 291 setting.
(maximum input pulse: 100k pulses/s)
Turn ON the RT signal to enable the second function.
When the second function such as "second torque
Second function
boost" and "second V/F (base frequency)" is set,
selection
turning ON the RT signal enables the selected
function.
Turn ON the MRS signal (20 ms or more) to stop the
inverter output.
Output stop
Use this signal to shut off the inverter output when
stopping the motor with an electromagnetic brake.
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.
Reset 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.
The terminal 4 function is available only when the AU
Terminal 4 input
signal is turned ON.
selection
Turning the AU signal ON makes terminal 2 invalid.
Selection of When the CS signal is left ON, the inverter restarts
automatic restart automatically at power restoration. Note that restart
after instantaneous setting is necessary for this operation. In the initial
power failure setting, a restart is disabled.
Contact input
Common terminal for the contact input terminal (sink
logic), terminal FM.
common (sink)
Connect this terminal to the power supply common
terminal of a transistor output (open collector output)
External transistor
device, such as a programmable controller, in the
common (source)
source logic to avoid malfunction by undesirable
current.
Common terminal for the 24 V DC power supply
24 V DC power
(terminal PC, terminal +24)
supply common
Isolated from terminals 5 and SE.
Input signals (1)
grey shaded fields can be selected by setting Pr. 178
When the STF
and STR signals
are turned ON
simultaneously,
the stop
command is
given.
Installation and wiring
Refer
Rated
to
specification
page
5-447
Input resistance
4.7 kΩ
Voltage when
contacts are open:
21 to 27 V DC
5-447
When contacts are
short-circuited:
5-299
4 to 6 mA DC
5-296
Input resistance
2 kΩ
5-292
When contacts are
short-circuited:
8 to 13 mA DC
5-445
5-443
Input resistance
4.7 kΩ
Voltage when
contacts are open:
21 to 27 V DC
5-200
When contacts are
short-circuited:
4 to 6 mA DC
5-406
5-581
5-590
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