Continental Hydraulics CEM-SA-B Installation Manual

Continental Hydraulics Installation Manual

CEM-SA-B

Description:

This closed loop position module has been developed for controlling hydraulic positioning drives.
Proportional valves with integrated or external electronics can be controlled with the differential
output. Output is an analog signal of either voltage, 0 to +/- 10v or current 4-20mA, suitable for
directly driving a proportional directional valve with on board electronics.

The internal profile generation is optimized for stroke-dependent deceleration or the NC control
mode. The controller and the controller settings are factory preset to typical requirements and can
be optimized for the control behavior as required. The optimized control function offers a high
degree of precision together with high stability for hydraulic drives. The movement cycle is
controlled via the external position and speed inputs.

The high resolution of the analogue signals ensures good positioning behavior. A wide range of
analog signals are accepted. User may select either voltage or current input mode. These inputs
are easily scaled to match system requirements.

Forward and Reverse “jog” inputs allow for manual load control. A user definable window for “in

position” triggers an output for communication to the next machine function.

This module is easily adapted to a variety of system requirements. All variables are user adjusted
with easy to use CHI-PC software on your Microsoft Windows laptop. Control variables are

stored in non-volatile memory internal to the module. All variables can be read by the laptop, and
reproduced exactly on other modules.

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Continental Hydraulics Installation Manual

Table of Contents

Information Description Page #

Technical Data - ……………………………………….…………………….………..…………… 3
Functional Diagram …….…….…………………….……………………………………………... 4
Wiring Example…………………………………………………………………………………… 4

Dimensions …………………………………………….…………………………………………… 4
Terminal Identification …………………………………………………………………………….. 5

Steps to install and configure a new application ……………………….………………………. 6
Module Mounting Location ………………………………………….…………………………….. 7
Power Supply ………………………………………………………………………………….…… 7
Wiring to valve ……………………………………………………………………………………… 7

Parameter List …………………………………………….…………………………..…………… 8
LED Indications ……………………….…………………………………………………………… 9
Command Parameter Descriptions

 LG (Language)…………………………………………………………………………… 10
 MODE……………………………………………………………………………………... 10
 SENS ……………………..……………………………………………………. ………... 10
 EOUT …………………………………………………………………………………… 11
 ENABLE…………………………………………………………………………………. 11
 START (RUN)…………………………………………………………………………… 11
 HAND:A / HAND :B……………………………………………………………………… 12
 INPOS ……………………………………………………………………………………. 12
 SYS_RANGE ……………………………………………………………………………. 12
 SIGNAL: W/X/V.………………………………………………………………………… 13
 N_RANGE:X …………………………………………………………………………….. 13
 OFFSET:X ……………………………………………………………………………….. 13
 Using SYS_RANGE, N_RANGE and OFFSET ……………………………………… 14
 Speed Commands SIGNAL:V …………………………………………………………. 15
 VELO ……………………………………………………………………………………… 15
 VRAMP …………………………………………………………………………………… 15
 VMODE …………………………………………………………………………………… 16
 ACCEL ……………………………………………………………………………………. 16
 VMAX ……………………………………………………………………………………. 16
 A:A and A:B………………………………………………………………………………. 17
 D:A / D:B / D:S …………………………………………………………………………… 17
 V0:A / V0:B / V0:RES …………………………………………………………………… 18
 PT1 ……………………………………………………………………………………….. 18
 CTRL ……………………………………………………………………………………… 19
 MIN:A / MIN:B ……………………………………………………………………………. 20
 MAX:A / MAX:B …………………………………………………………………………. 20
 TRIGGER ………………………………………………………………………………… 20
 OFFSET ………………………………………………………………………………….. 21
 SIGNAL:U ………………………………………………………………………………… 21
 Special Command descriptions ……………………………………………………….. 22
 DC:AV ……………………………………………………………………………………. 23
 DC:DV ……………………………………………………………………………………. 23
 DC:I ………………………………………………………………………………………. 23
 DC:CR ……………………………………………………………………………………. 23
 Process Data (Monitoring) …………………………………………………………….. 23
 AINMODE………………………………………………………………………………… 24-25

Troubleshooting …………………………………………………………………………………… 26-27

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Technical data

Supply voltage [VDC] 12… 30 (incl. ripple)

Current requirement [mA] <100

External protection [A] 1 medium time lag

Digital inputs [V] logic 0: <2

[V] logic 1: >10

Input resistance [kOhm] 25

[V] logic 0: <2

[V] logic 1: >12 (50 mA)

Analogue inputs (sensor and
demand value signal)

[V] 0… 10; 25 kOhm

[mA] 4… 20; 240 Ohm

Signal resolution [%] 0,003 incl. Oversampling

(maximum resolution 1 µm )

Speed input [V] 0… 10; 90 kOhm

[mA] 4… 20; 240 Ohm

[%] 0,003

Analogue outputs

Voltage [V] 2 x 0… 10; differential output

[mA] 10 (max. load)

Signal resolution [%] 0,006

Current [mA] 4… 20; 390 Ohm maximum load

Signal resolution [%] 0,006

Controller sample time [ms] 1

USB in RS 232C Emulation

(9600… 57600 Baud, 1 stop bit,

no parity, echo mode)

Snap-on module to EN 50022

PA 6.6 polyamide

Flammability class V0 (UL94)

Weight [kg] 0,170

Protection class IP20

Temperature range [°C] -20… 60

Storage temperature [°C] -20… 70

Humidity [%] < 95 (non-condensing)

USB-B

4 x 4-pole terminal blocks

PE: via the DIN mounting rail

EN 61000-6-2: 8/2005

EN 61000-6-4: 6/2007 ; A1:2011

Connections
EMC

Digital outputs

Serial interface

Housing

Continental Hydraulics Installation Manual

Page 3 of 27 CEM-SA-B CHI 1020687 01/2016

Continental Hydraulics Installation Manual

Power

Supply

15
16

Differential
Input on

Control Valve

+

-

3
4

12

1
2

Ready
In Pos

5

Start (Run)
Hand + (jog)

6

7

8

Hand - (jog)

Analog Position Feedback

Analog Command Position

Analog Speed (optional)

+24v

14/11

13/11

10/9

Gnd

+24v

Gnd

Valve out +

Enable

Speed
Command
Feedback

Valve out -

4.5"

3.9"

0.9"

Functional Diagram:

Wiring Example:

Dimensions:

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Continental Hydraulics Installation Manual

CEM-SA-B Input and output Terminal Identification

Connection

Supply

PIN 3

Power supply (see technical data)

PIN 4

0 V (GND) connection.

Connection

Analogue signals

PIN 9 / 10

External speed dem and (V), range 0… 10 V or 4… 20 m A (scalable)

PIN 13

Position dem and value (W), range 0… 10 V or 4… 20 mA (scalable)

PIN 14

Analogue pos ition actual value (X), range 0… 10 V or 4… 20 m A (scalable)

PIN 11 / PIN 12

0 V (GND) connection for analogue signals

Valve control Output signal.

Type of signal and polarity can be selected by the parameter SIGNAL:U.

Connection

Digital inputs and outputs

Enable input:

This digital input signal initializes the application and error messages are deleted. The
controller and the READY signal are activated. The output signal to the control element is
enabled.

The actual position is accepted as the command position and the drive remains
stationary under control at this position.

If the input is disabled, the output (control signal) is switched off(disabled). Take care of
the EOUT-command!

START (RUN) input:

The position controller is active and the external analogue demand position is accepted
as the demand value. If the input is disabled during the movement, the system is
stopped within the set emergency stopping distance (D:S).

HAND + input:

Manual operation (START = OFF): the drive moves at the programmed speed in the
programmed direction. After deactivation, the actual current position is accepted as the
demand position. The START (RUN) input has priority over the HAND+ input.

If the sensor signal is missing (external ENABLE signal = ON), the drive can be operated
in manual mode.

HAND - input:

Manual operation (START = OFF); the drive moves with the programmed speed in the
programmed direction. After deactivation, the actual current position is accepted as the
required position. The START (RUN) input has priority over the HAND- input.

If the sensor signal is missing (external ENABLE signal = ON), the drive can be operated
in manual mode.

READY output:

ON: The module is enabled; there are no discernable errors.

OFF: Enable (PIN 8) is disabled or an error (sensor or internal error) has been detected.

STATUS output:

ON: INPOS message. The axis is within the INPOS window.

OFF: INPOS message. The axis is outside the INPOS window.

PIN 2
PIN 15 / 16

PIN 8

PIN 7

PIN 6

PIN 5

PIN 1

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Continental Hydraulics Installation Manual

Steps to install and configure a new application:

All parameters are adjusted using VEA-BUSB programming cable and CHI-PC Microsoft
Windows application.

1. Mount the module in a suitable location

2. Connect the power supply and valve solenoids

3. Down load and open the GUI program (www.continentalhydraulics.com/wp-

content/uploads/2015/01/setup-CEWMPC-10-v3.5.0.zip )

4. Connect to Laptop via USB to USB Type B communication cable.

5. Open the Options and check setting make sure the correct com port, full-Duplex and

57.6K Baud rate are selected.

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Continental Hydraulics Installation Manual

Module Mounting Location:

This module is to be mounted in a cabinet for protection from the local environment.
Ensure there is adequate free space around the module to allow for cooling air flow.
This module is designed to snap onto an industry standard 35mm DIN rail.
Do not mount near other modules that emit high power electrical interference, such as motor
controllers and high power contactors.

Power Supply:

This 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 1 amp medium action fuse is recommended in the “+” power supply line.

Wiring to Valve:

Two conductors are required for each solenoid. There is no need for shielding on these power
conductors.

Wire size is chosen to provide an acceptable voltage drop between the module and the valve
solenoid. The following chart is based on 5% drop for 12v and 24v applications. The listed cable
length is distance from module to valve, and includes the voltage drop of the return conductor.

Wire size 2.6A 12v 1.6A 24v 0.86A 24v
12 gauge 66 ft. max 215 ft. max 400 ft. max
14 gauge 49 ft. max 159 ft. max 295 ft. max
16 gauge 31 ft. max 100 ft. max 186 ft. max
18 gauge 19 ft. max 63 ft. max 117 ft. max
20 gauge 13 ft. max 39 ft. max 73 ft. max
22 gauge 8 ft. max 25 ft. max 46 ft. max

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Ref Page Command Parameter Help / Description STD EXP-SDD EXP-NC

10 LG EN EN English X X X
10 MODE EXP Standard / Expert mode X X X
10 SENS ON Malfunction monitoring [ON / OFF /AUTO] X X X
11 EOUT 0 Output signal if not ready [0.01%] X X
12 HAND:A 3333 Manual speed [0.01%] X X X
12 HAND:B -3333 Manual speed [0.01%] X X X
12 INPOS 200

In-position-window [µm] X X X

12 SYS_RANGE 100 Axis working Stroke [mm] X X X
13 SIGNAL:X U0-10 Type of Input X X X
13 N_RANGE:X 100 sensor nominal length [mm] X X X
13 OFFSET:X 0 sensor offset [µm] X X X
13 SIGNAL:W U0-10 Type of Input X X X
15 SIGNAL:V OFF Type of Input X X X
15 VELO 10000 Internal speed limitation [0.01%] X X X
15 VRAMP 200

Ramp time for the external speed [ms] [SINGNAL:V - ON] X

16 VMODE SDD Method of positioning X X
16 ACCEL 250

Acceleration [mm/s^2] X

16 VMAX 50 Maximum speed [mm/s] X
17 A:A 100 Acceleration time [ms] X X
17 A:B 100 Acceleration time [ms] X X
17 D:A 25 Deceleration stroke [mm] X X
17 D:B 25 Deceleration stroke [mm] X X
17 D:S 10 Overtravel [mm] X X
18 V0:A 25 Loop gain [1/s] X
18 V0:B 25 Loop gain [1/s] X
18 V0:RES 1 Loop gain resoluti on X
18 PT1 1 PR1-fi lter time constant [ms] X X
19 CTRL SQRT1 Control characteristic X X X
20 MIN:A 0 Compensation of the Deadband in 0.01% X X X
20 MIN:B 0 Compensation of the Deadband in 0.01% X X X
20 MAX:A 10000 Output Scaling in 0.01% X X X
20 MAX:B 10000 Output Scaling in 0.01% X X X
20 TRIGGER 200 Trigger point of the MIN function in 0.01% X X X
21 OFFSET 0 Output offset [0.01%] X X X
21 SIGNAL:U U+-10 Type and polarity of the output signal X X X
23 DC:I 2000 Drift compensator, I-gain [ms] X X
23 DC:AV 0 Drift compensator, activation value [0.01%] X X
23 DC:DV 0 Drift compensator, deactivation value [0.01%] X X
23 DC:CR 500 Drift compensator, control range [0.01%] X X

CEM-SA-B Function Parameter layout

MODE

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Continental Hydraulics Installation Manual

LEDs Description of the LED function

Identical to the READY output.

OFF: No power supply or ENABLE is not activated

ON: System is ready for peration

Flashing: Error discovered

Only active when SENS = ON

Identical to the STATUS output.

OFF: The axis is outside the INPOS window.

ON: The axis is within the INPOS window.

1. Chasing light (over all LEDs): The boot loader is active. No normal functions
are possible.

2. All LEDs flash shortly every 6 s: An internal data error was detected and corrected
automatically! The module still works regularly.
To acknowledge the error the module has to have power cycled.

YELLOW A +
YELLOW B

Both yellow LEDs flash oppositely every 1 s: The nonvolatile stored parameters are
inconsistent! To acknowledge the error, the data have to be saved with the SAVE
command or the corresponding button in the CHI-PC. If the function of the module has
changed via the FUNCTION parameter, all parameters are deleted purposely and set to
default values. In this case the LEDs indicate no error, but a desired state. To
acknowledge please save.

GREEN

YELLOW A

GREEN +
YELLOW A+B

LED Indications

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