Continental Hydraulics Installation Manual
Page 5 of 8
CEM-AC-A
CHI 1013472 April 2012
Command input with Voltage:
The CEM-AC-E0 can accept voltage signals for commanding valve performance.
An analog command source voltage may be either “differential” or “ground referenced”.
2
4
+24v
1
3
Power Supply
Gnd
Line
AC
DC
Analog Command Source
"Differential Voltage"
(PLC, Digitial Motion
Controller, etc.)
+
-
CEM-AC-
E0
2
3
4
+24v
1
3
Power Supply
Gnd
Line
AC
DC
Analog Command Source
"Ground Referenced Voltage"
(PLC, Digitial Motion
Controller, etc.)
Gnd
+
CEM-AC-
E0
-
All ground based reference voltages must have a connection to Pin 3.
2
3
4
+24v
1
3
Power Supply
Gnd
Line
AC
DC
Gnd
CEM-AC-
E0
+10v
potentiometer
( 5k ohm typical)
Gnd
External
Voltage
Reference
Command input with current:
The CEM-AC-E1 can accept current signals for commanding valve performance.
The CEM-AC-E1 has a 390 ohm resistor inserted across terminals 2 and 4. This resistor
converts the current to a voltage. This voltage is measured by the differential amplifier to become
the module command.
Input current range is 0 to +/- 20 mA, and is typically used at 4 to 20mA. This current is
converted to voltage, and software scale and offset parameters are applied to meet system
requirements.
2
4
+24v
1
3
Power Supply
Gnd
Line
AC
DC
CEM-AC-
E1
4 to 20mA
Transmitter
A
Line
AC
DC
Loop Monitor
(optional)
Power Supply
