Instruction manual

18
INSTALLATION AND WIRING
(2) Description of the control circuit terminals
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 25.)
Type Symbol
Terminal
Name
Description
Input signals
Contact 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.
STR
Reverse
rotation start
Turn on the STR signal to start reverse
rotation and turn it off to stop.
RH, RM,
RL
Multi-speed
selection
Combine the RH, RM and RL signals as
appropriate to select multiple speeds.
Input terminal
function selection
(Pr. 180 to Pr.
183) changes
terminal
functions.
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.
RES Reset
Used to reset the protective circuit activated. Turn on the
RES signal for more than 0.1s then turn it off.
Factory setting is for reset always. By setting Pr.75, reset
can be set to enabled only at an inverter alarm occurrence.
(Refer to page 108.) Recover about 1s after reset is
cancelled.
SD
Contact input
common
(sink*)
Common to the contact input terminals.
Common output terminal for 24VDC 0.1A power output (PC
terminal).
PC
Power output
and external
transistor
common
Contact input
common
(source*)
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.
This terminal can be used as a 24VDC, 0.1A power output.
Analog
Frequency setting
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 10kΩ. Maximum permissible voltage 20V.
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 (voltage input is
invalid). Input resistance approximately 250Ω. Maximum
permissible current 30mA.
5
Frequency
setting
common
Common to the frequency setting signals (terminal 2, 1 or 4).
Do not connect to the ground.
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