Continental Hydraulics CEM-AC-E0-A, CEM-AC-E1-A Installation Manual

Continental Hydraulics Installation Manual

CEM-AC-E0-A
CEM-AC-E1-A

Description:

This power amplifier mounts directly to a single solenoid proportional valve coil with a DIN style
connector, and will drive up to 2.5A. It is suitable to control current to either a proportional flow or
pressure valve coil.
A wide range of analog signals are accepted. There are two product choices for input, one
accepts voltage commands, the other accepts current commands. These inputs are ea sily scaled
to match system requirements. Two independent ramps are available for acceleration and
deceleration control.
Min and Max output current are adjustable. Output characteristics can be independently
customized. The module is disabled if the coil outputs are shorted or open. If command current is
outside of the proper range, the module is also disabled. PWM and Dither are user adjustable.
This module is easily adapted to a variety of system requirements. All variables are user adjusted
with easy to use software on your Microsoft Windows laptop. Control variables are stored in non­volatile memory internal to the module. All variables can be read by the laptop, and reproduced
exactly on other modules.

Technical Data:

Power Supply

Analog Input

Solenoid Output

Consumption

Impendance ohm 90k

Impendance

Resolution

Sample Time mS

PWM Frequency 60 to 2650
Dither Frequency

Dither Amplitute

Sample Time

vDC 12 to 30 (including ripple)

mA

<100mA + solenoid
3 (medium action)

AExternal Fuse

vDC 0 to +10 (voltage version)

Voltage

mA

Current

4 to 20 (current version)

390

ohm

%<0.1

1.0

AA1.2

2.5

Hz

60 to 400

Hz

0 to 30

%

0.17

mS

Software Selecta ble

Electrical Connectio n

Housing

Electro Magnetic Compatibility

Power and Signal

Communication

Housing

Combustability Class

Storage Temperature

Material

Protection Class

Humidity

Emission
Immunity

Vibration Resistance EIC 60068-2-6

M12 5 pin male key style A

Ground via DIN coil pin

LIN bus

Attaches to DIN 43650 coil
Polyamide PA

UL94

V1

IP 65 (with gasket)

-20 to +60

CWorking Temperature
C

-20 to +70

% 95 (non condensing)

EN 61000-6-2
EN 61000-6-3

Page 1 of 8 CEM-AC-A CHI 1013472 April 2012

Continental Hydraulics Installation Manual

Functional Diagram:

Command input

(White)

Command Return

(Black)

0 to +10v

4 to 20 mA

+

-

or

Scaling

2
4

Input

CEM-AC-E0
CEM-AC-E1

Ramp

w

(voltage input)
(current input)

Output
Control

+12 to 24v

DC

1

(Brown)

3

0v (Gnd)

(Blue)

Sol A

DC

Output

uc

Communication

(Gray)

Wiring Example:

Dimensions:

5

Control Program

E0 - Voltage input

12-30vDC

Ground

0 to 10v

Ground

programming

E1 - Current input

12-30vDC

Ground

4-20 mA

return

programming

1

Power

3
2

Signal

4

(communications)

5

1

Power

3
2

Signal

4

(communications)

5

Ground via DIN

plug

Page 2 of 8 CEM-AC-A CHI 1013472 April 2012

1.3"

1.5"

M12 5pin male

3.1"

DIN 43650 Form A

5

43

12

Face view of

connector

on module

Continental Hydraulics Installation Manual

Steps to install and configure a new application:

1. Mount the module on the valve solenoid.

2. Connect the M12 cordset with power supply and command wires

3. Attach VEA-PB5 programming box tool

4. Connect programming tool to computer with VEA-USB programming cable

5. Adjust current range to match valve

6. Adjust PWM/Dither to optimize valve performance

7. Adjust analog input to scale command input

8. Adjust ramping (if desired)

9. Adjust internal monitor functions (if desired)

Module Mounting:

This module is to be mounted on a proportional valve solenoid with a DIN 43650 connector. It
has an environmental protection rating of IP65. Additional external protection may be necessary
on machinery subjected to extreme wash down conditions.
Do not mount near other items that emit high power electrical interference, such as motor
controllers and high power contactors.

Power Supply:

This amplifier module is designed to operate on DC power from a regulated power supply ranging
from 12 to 30 volts. Match valve solenoid voltage rating to power supply, typically 12 or 24 volts.

A 3 amp medium action fuse is recommended in the “+” power supply line.

Wiring to Amplifier:

The CEM-AC products have an industry standard M12 5pin male electrical connector. Mating
connectors or complete cordsets are available from many sources.

Voltage drop must be considered when selecting connecting cable.
CHI offers the VEA-3P5C, a 5 meter long 22 gauge 5 conductor shielded cable cordset. The

voltage drop in this cable should be acceptable with 24v solenoid applications. Allowable voltage
drop may limit the cable length in an application where the solenoid requires the full 2.5A.

Adjust MODE to STD or EXP:

The module wakes up in the default mode of STD. Several parameters may be adjusted while in
STD mode.

EXP mode allows more complex parameter adjustments to the module.
MODE parameter valid options are STD and EXP.

Page 3 of 8 CEM-AC-A CHI 1013472 April 2012