Table of Contents
2.6
Control circuit
2.6.1
Details on the control circuit terminals
Input signal
Terminal
Type
Terminal name
symbol
STF
Forward rotation start
STR
Reverse rotation start
RH
RM
Multi-speed selection
RL
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 30 mA power supply.
Frequency setting
10
power supply
Frequency setting
2
(voltage)
Frequency setting
4
(current)
Frequency setting
5
common
*1
Set Pr.73, Pr.267, and the voltage/current input switch correctly, then input an analog signal in accordance with the setting.
Applying a voltage with the voltage/current input switch in the "I" position (current input is selected) or applying a current with the switch in the "V"
position (voltage input is selected) could cause component damage of the inverter or analog circuits of output devices. (For the details, refer to
page
131.)
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.
Multi-speed can be selected according to the combination
of RH, RM and RL signals.
Common terminal for the contact input terminal (sink logic).
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.
Common terminal for the 24 VDC power supply (terminal
PC).
Isolated from terminal 5.
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 current.
Common terminal for contact input terminal (source logic).
Used as the power supply for an external device such as a
frequency setting potentiometer or digital panel meter.
Inputting 0 to 5 VDC (or 0 to 10 VDC) provides the
maximum output frequency at 5 V (or 10 V) and makes
input and output proportional. Use Pr.73 to switch between
input 0 to 5 VDC (initial setting) and 0 to 10 VDC.
Inputting 4 to 20 mADC (or 0 to 5 V, 0 to 10 V) provides the
maximum output frequency at 20 mA and makes input and
output proportional. This input signal is valid only when the
AU signal is ON (terminal 2 input is invalid). Use Pr.267 to
switch among input 4 to 20 mA (initial setting), 0 to 5 VDC,
and 0 to 10 VDC. Set the voltage/current input switch in the
"V" position to select voltage input (0 to 5 V / 0 to 10 V).
Common terminal for the frequency setting signal input (via
terminal 2 or 4). Do not earth (ground).
Rated specification
When the STF and
STR signals are
Input resistance: 4.7 kΩ,
turned ON
voltage when contacts
simultaneously, the
are open: 21 to 26 VDC,
stop command is
current when contacts are
given.
short-circuited: 4 to 6
mADC
—
Power supply voltage
range:
22 to 26.5 VDC,
permissible load current:
30 mA
5 VDC (±0.2 VDC),
permissible load current:
10 mA
Input resistance: 10 kΩ
(±1 kΩ),
Maximum permissible
*1
voltage: 20 VDC
For current input,
input resistance: 249 Ω
(±5 Ω),
permissible maximum
current: 30 mA.
Current input
(initial status) Voltage inpu
*1
—
2. INSTALLATION AND WIRING
1
2
Refer
3
to
page
5
145
5
6
7
—
8
9
37
10
131
131
131
131
35
2.6 Control circuit
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