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Easy Start Guide
Mitsubishi D700-SC Series Inverter
9. How to connect and configure a Potentiometer
for remote speed control
If speed control via the integrated dial is
unsuitable for the application, a remote
Potentiometer can be used instead.
This provides the benefit of allowing motor
speed to be controlled from a more convenient
location such as a cabinet door (if the D700 SC
is cabinet-mounted) or on the machine itself.
9.1 Parameters to change for remote Potentiometer speed control
Parameter Description
Pr. 59
Remote setting function
Pr. 73
Analogue input selection
Pr. 79
External operation mode
1
2
3
V I
2
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All content, including but not limited to graphics, text and procedures copyright
Drive Supermarket and must not be reproduced or altered without prior written permission.
How to set
Default is 0. Set to
Set to
1
for 5V (default).
Set to
4
to use the Potentiometer as the speed reference with Start/Stop via Inverter keypad.
Set to 0 to use the Potentiometer as the speed reference with Start/Stop via external controls.
Voltage/Current
Input Switch
Screen to
Earth Terminal
Screened
"SY" Cable
1kOhm
Potentiometer
[Order Code 31137]
A Potentiometer of
used.
The number of turns depends on the
application. A single turn Potentiometer is
available from The Inverter Drive Supermarket
at InverterDrive.com.
1
to enable frequency setpoint via Analogue input terminal 2.
9.2 Connecting the Potentiometer
First, ensure the Voltage/Current Input switch
is set to "V" (Voltage).
A wiring diagram is shown in the illustration
opposite. The most important connection at
the Potentiometer end is the centre terminal or
"wiper". The wiper will output a variable voltage
between 0 and 5 volts and should be
connected to the "2" terminal on the Inverter. It
is this voltage which provides the speed signal
with 0V being slowest and 5V fastest.
The default output frequency at 0V is the
minimum frequency of the Inverter. To change
this, edit Parameter 2. The default output
frequency at 5V is 50Hz. To change this, edit
Parameter 125.
If the rotation of the Potentiometer is the
opposite to that required (ie. turn anti-
clockwise to increase speed instead of
clockwise) reverse connections 10 and 5.
Use shielded SY cable between Potentiometer
and Inverter and ensure that the cable screen
is connected to the Inverter earth terminal.
©
The Inverter
1kOhm
rating should be
Page 9
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