INSTALLATION AND WIRING
15
(2) Description of the control circuit terminals
Type
Symbol
Terminal
Name
Description
STF
Forward
rotation start
Turn on the STF signal to start forward
rotation and turn it off to stop.
STR
Reverse
rotation start
Turn on the STR signal to start reverse
rotation and turn it off to stop.
When the STF
and STR signals
are turned on
simultaneously,
the stop command
is given.
RH, RM,
RL
Multi-speed
selection
Combine the RH, RM and RL signals as
appropriate to select multiple speeds.
MRS
Output stop
Turn on the MRS signal (20ms or
longer) to stop the inverter output.
Used to shut off the inverter output to
bring the motor to a stop by the
electromagnetic brake.
Input terminal
function choices
(Pr. 180 to
Pr. 183) change
terminal functions.
Cont
act
input
RES
Reset
Used to reset the protective circuit activated. Turn on the
RES signal for more than 0.1 second then turn it off.
SD
Contact input
common and
external
transistor
common
(sink*)
When transistor output (open collector output), such as a
programmable controller (PLC), is connected, connect the
external power supply common for transistor output to this
terminal to prevent a fault caused by undesirable current.
Common to the contact input terminals. Common output
terminal for 24VDC 0.1A power output (PC terminal).
This terminal becomes common to the contact input
terminals when sink logic is selected.
Please see page 23 for the logic changing method.
Input
signals
PC
Power output
Contact input
common
(source*)
This terminal can be used as a 24VDC, 0.1A power
output.
This terminal becomes external transistor common when
sink logic is selected.
Please see page 23 for the logic changing method.
10
Frequency
setting power
supply
5VDC, permissible load current 10mA
2
Frequency
setting
(voltage)
By entering 0 to 5VDC (0 to 10VDC), the maximum output
frequency is reached at 5V (or 10V) and I/O are
proportional. Use Pr. 73 to switch between input 0 to
5VDC (factory setting) and 0 to 10VDC. Input resistance
10k
Ω
. Maximum permissible voltage 20V.
F
requency
set
ti
ng
4
Frequency
setting
(current)
By entering 4 to 20mADC, the maximum output frequency
is reached at 20mA and I/O are proportional. This input
signal is valid only when the AU signal (Note) is on. Input
resistance approximately 250
Ω
. Maximum permissible
current 30mA.
Analog
5
Frequency
setting input
common
Common terminal for the frequency setting signal (terminal 2,
1 or 4) and analog output terminal AM.
Do not connect to the earth (ground).
Note: Assign the AU signal to any of the terminals using the input terminal function selection
(Pr. 180 to Pr. 183).
* Used as a contact input signal common terminal by switching between sink logic and source
logic. (Refer to page 23.)
