Mitsubishi FR-A846-00023, Инструкция по эксплуатации

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Control circuit
32
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-A800 Instruction Manual (Detailed).
 Input signal
Ty
p
e
Terminal
symbol
Terminal name Terminal function description Rated specification
Cont
a
ct input
STF 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 (20ms 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.
SD
Contact input common
(sink)

Common terminal for the contact input terminal (sink logic),
terminal FM.
—
External transistor
common (source)

Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a
programmable controller, in the source logic to avoid malfunction
by undesirable current.
24 VDC power supply
common
Common terminal for the 24 VDC power supply (terminal PC,
te24)
Isolated from terminals 5 and SE.
PC
External transistor
common (sink)

Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a
programmable controller, in the sink logic to avoid malfunction by
undesirable currents. (Refer to
page 37 .)
Power supply voltage
range 19.2 to 28.8 VDC
Permissible load current
100 mA
Contact input common
(source)

Common terminal for contact input terminal (source logic).
(Refer to
page 37 .)
24 VDC power supply Can be used as a 24 VDC 0.1 A power supply.