CNC4PC C11G User Manual page 10

Relay 1 and 2
They can be used to control the VFD. The relay specifications are shown in this table.
ELECTROMECHANICAL RELAYS SPECIFICACTIONS
Maximun Current (AC)
Maximun Current (DC)
Electromechanical Relays Specifications
Replacing a Potentiometer:
This circuit can be used to replace a potentiometer of DC moto.
These speed controller circuits are very commonly used by
SIEG, KB Electronics, and many other oriental machines.
Before explaining how to do it, please first keep in mind that it
can be done if the voltage that goes through the pot is +12vdc
or less. This circuit cannot be used for AC currents.
In most cases the terminals that go to the potentiometer will
carry these signals:
P1 = GND
P2 = WIPER
P3 = REFERENCE VOLTAGE
These are the steps for replacing a potentiometer:
1. Measure the voltage difference between P1 and P3. Make sure it measures
under +12vdc.
2. Fine tune the analog output to the output voltage you got from step 1.
3. Connect the ground from the analog output to the ground of the potentiometer
(P1).
4. Connect the analog output to the wiper connection of the potentiometer (P2).
User's Manual
7A@240VAC; 10A@125VAC
15A@524VDC; 10A@28VDC
Page 8