Mitsubishi FR-A740-00023-EC, Инструкция по эксплуатации

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23
Control circuit specifications
2
W
IRING
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 222
.)
(1) Input signals
Ty
p
e Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
page
C
ont
ac
t i
n
pu
t
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
4.7k
Ω
Voltage at
opening: 21 to
27VDC
Contacts at
short-circuited: 4
to 6mADC
222
STR
Reverse
rotation start Turn on the STR signal to start reverse
rotation and turn it off to stop.
STOP
Start self-
holding
selection
Turn on the STOP signal to self-hold the start signal. 222
RH,
RM, RL
Multi-speed
selection Multi-speed can be selected according to the combination of RH,
RM and RL signals.
222
JOG
Jog mode
selection Turn on the JOG signal to select Jog operation (initial setting) and
turn on the start signal (STF or STR) to start Jog operation.
222
Pulse train
input
JOG terminal can be used as pulse train input terminal. To use as
pulse train input terminal, the
Pr. 291 setting needs to be changed.
(maximum input pulse: 100kpulses/s)
Input resistance
2k
Ω
Contacts at
short-circuited: 8
to 13mADC 222
RT
Second
function
selection
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.
Input resistance
4.7k
Ω
Voltage at
opening: 21 to
27VDC
Contacts at
short-circuited: 4
to 6mADC
222
MRS Output stop
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.
222
RES Reset
Used to reset alarm output provided when protective circuit is
activated.
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 an inverter alarm occurrence. Recover about
1s after reset is cancelled.
222
AU
Terminal 4 input
selection
Terminal 4 is made valid only when the AU signal is turned on. (The
frequency setting signal can be set between 4 and 20mADC.)
Turning the AU signal on makes terminal 2 (voltage input) invalid.
275
PTC input
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.
178
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.
(Refer to Pr. 57 Restart coasting time in page 254)
222
SD
External
transistor
common,
contact input
common (sink)
Common terminal for contact input terminal (sink logic).
Common output terminal for 24VDC 0.1A power supply (PC
terminal).
Isolated from terminals 5 and SE.
-------------------- —
PC
24VDC power
supply, contact
input common
(source)
When connecting the transistor output (open collector output),
such as a programmable controller (PLC), 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.
Can be used as 24VDC 0.1A power supply.
When source logic has been selected, this terminal serves as a
contact input common.
Power supply
voltage range
19.2 to 28.8VDC
Current
consumption
100mA
27