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2.6
Control circuit
2.6.1
Details on the control circuit terminals of the
inverter
For the parameter details, refer to the Instruction Manual (Function).
Input signal
Terminal
Type
Terminal name
symbol
*1*5
Forward rotation start
STF
*1*5
Reverse rotation start
STR
Start self-holding
*1*5
STOP
selection
RH
RM
Multi-speed selection
*1*5
RL
Jog mode selection
*1*5
JOG
Pulse train input
Second function
*1*5
RT
selection
Output stop
MRS
(Inverter operation
*1*5
(X10)
enable)
*1
Reset
RES
Terminal 4 input
*1
AU
selection
Selection of
automatic restart
*1
CS
after instantaneous
power failure
Contact input
common (sink)
External transistor
SD
common (source)
24 VDC power supply
common
External transistor
common (sink)
PC
Contact input
common (source)
24 VDC power supply Can be used as a 24 VDC 0.1 A power supply.
48
2. INSTALLATION AND WIRING
2.6 Control circuit
Terminal function description
Turn ON the STF signal to start forward rotation
and turn it OFF to stop.
Turn ON the STR signal to start reverse rotation
and turn it OFF to stop.
Turn ON the STOP signal to self-hold the start signal.
Multi-speed can be selected according to the combination of RH, RM and
RL signals.
Turn ON the JOG signal to enable JOG operation (initial setting) and turn
ON the start (STF or STR) signal to start JOG operation.
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)
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.
Connect to the terminal RDA of the converter unit (FR-CC2). When the
RDA signal is turned OFF, the inverter output is shut off.
The X10 signal (NC contact) is assigned to the terminal MRS in the initial
setting. Use Pr.599 to change the specification to NO contact.
Use this signal to reset a fault output provided when a protective function
is activated. Turn ON the RES signal for 0.1 second or longer, then turn it
OFF.
In the initial setting, reset is always enabled. Setting Pr.75 makes reset
possible only after the occurrence of a inverter fault. The inverter will
restart about 1 second after reset.
The terminal 4 function is available only when the AU signal is ON.
Turning the AU signal ON makes terminal 2 invalid.
When the CS signal is left ON, the inverter restarts automatically at power
restoration. Note that restart setting is necessary on both the inverter and
the converter unit for this operation. In the initial setting, a restart is
disabled.
Common terminal for the contact input terminal (sink logic) and terminal
*3
FM.
Connect this terminal to the power supply common terminal of a transistor
output (open collector output) device, such as a programmable controller,
*4
in the source logic to avoid malfunction by undesirable current.
Common terminal for the 24 VDC power supply (terminal PC, terminal
+24).
Isolated from terminals 5 and SE.
Connect this terminal to the power supply common terminal of a transistor
output (open collector output) device, such as a programmable controller,
*3
in the sink logic to avoid malfunction by undesirable current.
Common terminal for contact input terminal (source logic).
*4
Rated specification
When the STF and STR
signals are turned ON
Input resistance: 4.7
simultaneously, the
kΩ,
stop command is given.
voltage when contacts
are open: 21 to 27
VDC,
current when contacts
are short-circuited: 4 to
6 mADC
Input resistance: 2 kΩ,
current when contacts
are short-circuited: 8 to
13 mADC
Input resistance: 4.7
kΩ,
voltage when contacts
are open: 21 to 27
VDC,
current when contacts
are short-circuited: 4 to
6 mADC
—
Power supply voltage
range: 19.2 to 28.8
VDC, permissible load
current: 100 mA
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