How To Connect And Configure A Potentiometer For Remote Speed Control - Bosch Rexroth EFC 3600 Easy Start Manual

Easy Start Guide
Bosch Rexroth EFC 3600 Series Inverter
8. How to connect and configure a Potentiometer
for remote speed control
If the integrated dial on the keypad 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 EFC
3600 is cabinet-mounted) or on the machine
itself.
8.1 Parameters to change for remote Potentiometer speed control
Parameter Description
b0.02 Access to additional parameters
b1.00 Frequency Setting Source
E0.22 Potentiometer Min Speed Hz
E0.24 Potentiometer Max Speed Hz
EFC 3600
I/O Terminal Blocks
Screen to
Earth Terminal
10kOhm
Potentiometer
[Order Code 21302]
This guide has been produced by The Inverter Drive Supermarket Ltd.
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 for Basic Parameters. Set at
Set to 2 to enable 0-10V via 10kOhm Potentiometer
Set to 05.00 for most applications.
Set to 50.00 for most applications.
GND
1
2 3
Vr1 +10V
Screened
"SY" Cable
2
A Potentiometer of
used.
The number of turns depends on the
application but both single turn and ten turn
Potentiometers are available from The Inverter
Drive Supermarket at InverterDrive.com.
2 to enable Extended Parameters.
8.2 Connecting the Potentiometer
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 10 volts and should be
connected to the Vr1 terminal at the Inverter
end. It is this voltage which provides the speed
signal with 0V being slowest and 10V fastest.
The default output frequency at 0V is 0Hz. To
change this, edit Parameter E0.22. The default
output frequency at 10V is 50Hz. To change
this, edit Parameter E0.24.
If the rotation of the Potentiometer is the
opposite to that required (ie. turn anti-
clockwise to increase speed instead of
clockwise) reverse connections +10V and
GND.
Use shielded SY cable between Potentiometer
and Inverter and ensure that the cable screen
is connected to the earth IO terminal.
© The Inverter
10kOhm rating should be
Page 8