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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
CHI-PC
with easy to use
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.
Page 1 of 27
CEM-SA-B
CHI 1020687 01/2016

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Summary of Contents for Continental Hydraulics CEM-SA-B

  • Page 1 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.
  • Page 2: Table Of Contents

    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 ………………………………………….……………………………..
  • Page 3: Technical Data

    Continental Hydraulics Installation Manual Technical data [VDC] 12… 30 (incl. ripple) Supply voltage 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 Digital outputs [V] logic 1: >12 (50 mA)
  • Page 4: Functional Diagram

    Continental Hydraulics Installation Manual Functional Diagram: Wiring Example: +24v Power 10/9 Supply Analog Speed (optional) Speed 13/11 Analog Command Position Command 14/11 Analog Position Feedback Feedback Valve out + Differential Input on Valve out - Control Valve +24v Enable Start (Run)
  • Page 5: Terminal Identification

    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 demand (V), range 0… 10 V or 4… 20 mA (scalable) PIN 13 Position demand value (W), range 0…...
  • Page 6: Steps To Install And Configure A New Application

    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.
  • Page 7: Module Mounting Location

    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.
  • Page 8: Parameter List

    Continental Hydraulics Installation Manual CEM-SA-B Function Parameter layout MODE Ref Page Command Parameter Help / Description EXP-SDD EXP-NC EN EN English MODE EXP Standard / Expert mode SENS ON Malfunction monitoring [ON / OFF /AUTO] EOUT 0 Output signal if not ready [0.01%] HAND:A 3333 Manual speed [0.01%]...
  • Page 9: Led Indications

    Continental Hydraulics Installation Manual LED Indications LEDs Description of the LED function GREEN 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 YELLOW A Identical to the STATUS output.
  • Page 10: Lg (Language)

    Continental Hydraulics Installation Manual Parameter Descriptions LG (Changing the language) Command Parameters Unit Group x= DE|EN Either English or German can be selected for the displayed texts. After changing the language settings, the ID button in the menu bar (CHI-PC) must be pressed (module identification).
  • Page 11: Eout

    Continental Hydraulics Installation Manual EOUT (Output signal: READY = OFF) Command Parameters Unit Group x= -10000… 10000 EOUT 0.01 % Output value in case of a detected error or a deactive ENABLE input. A value (degree of valve opening) for use in the event of a sensor error (or the module is disabled) can be defined here.
  • Page 12: Hand:a / Hand :B

    Continental Hydraulics Installation Manual HAND (Manual speed) The Hand functions are not active when Start PIN 7 is active, to use the Hand manual speed functions the Start function must be deactivated. Command Parameters Unit Group HAND:i i= A|B x= -10000… 10000 0.01%...
  • Page 13: Signal: W/X/V

    Continental Hydraulics Installation Manual SIGNAL (Type of input) Command Parameter Unit Group SIGNAL:i W|X|V EASY U0-10 U10-0 I4-20 I20-4 This command can be used to change the type of input signal (voltages or current) and to define the direction of the signal. This command is available for all analog inputs (W, X, and V).
  • Page 14: Using Sys_Range, N_Range And Offset

    Continental Hydraulics Installation Manual Using of the commands SYS_RANGE, N_RANGE: X and OFFSET: X If the Cylinder stroke and the feedback device are matched, the standard factory settings will not require any changes. In systems where these are not matched, the commands SYS_RANGE, N_RANGE: X and OFFSET: X must be scaled to match.
  • Page 15: Speed Commands Signal:v

    Continental Hydraulics Installation Manual Speed commands The SIGNAL: V command is used to switch over between external or internal speed limitations. SIGNAL: V = OFF Internal speed limitation (VELO command) SIGNAL: V = U0-10 External speed limitation (0-10 Volt) PIN 9/10 is used for external speed limitation See ANIMODE section (page 24-25) if the Signals used are not listed above, for re-scaling as required.
  • Page 16: Vmode

    Continental Hydraulics Installation Manual VMODE (Methode of positioning) Command Parameters Unit Group VMODE x= SDD|NC The fundamental control structure can be changed with this parameter. SDD: Stroke-Dependent Deceleration. In this mode, stroke-dependent deceleration is activated. This mode is the default mode and is suitable for most applications. With stroke-dependent deceleration, the drive comes to a controlled stop at the target position.
  • Page 17: A:a And A:b

    Continental Hydraulics Installation Manual A:A and A:B (Acceleration (ramp) time) Command Parameters Unit Group i= A|B VMODE=SDD x= 1… 5000 Ramp function for the 1 (A solenoid) and 3 (B solenoid) acceleration quadrants only. The acceleration time for positioning is dependent on the direction. “A” corresponds to connection 15 and “B”...
  • Page 18: V0:A / V0:B / V0:Res

    Continental Hydraulics Installation Manual V0:A / V0:B (Loop gain setting) Command Parameters Unit Group V0:i x i= A|B VMODE = NC x= 1… 400 This parameter is specified in s (1/s). In NC Mode normally the loop gain is specified rather than the deceleration stroke The internal gain is calculated from this gain value together with the parameters VMAX and SYS_RANGE.
  • Page 19: Ctrl

    Continental Hydraulics Installation Manual CTRL (Deceleration characteristics) Command Parameters Unit Group CTRL LIN|SQRT1|SQRT2 The deceleration characteristic is set with this parameter. In case of positively overlapped proportional valves the SQRT function should be used. The non-linear flow function of these valves is linearized by the SQRT function.
  • Page 20: Min:a / Min:b

    Continental Hydraulics Installation Manual MIN:A / MIN:B (Dead band compensation) MAX:A / MAX:B (Output scaling) TRIGGER (Response threshold for the MIN parameter activation) Command Parameters Unit Group i= A|B x= 0… 6000 MIN:i 0.01 % x= 3000… 10000 MAX:i 0.01 % x= 0…...
  • Page 21: Offset

    Continental Hydraulics Installation Manual OFFSET (Zero correction) Command Parameters Unit Group x= -4000… 4000 OFFSET 0.01 % This parameter is entered in 0.01% units. The offset value is added to the output value. Valve zero offsets can be compensated with this parameter.
  • Page 22: Special Command Descriptions

    Continental Hydraulics Installation Manual Special commands Drift compensation / high accurate positioning The high accurate positioning or the drift compensation can be used in case of external influence which is limiting the positioning accuracy. This function could be critical if limit cycling by wrong parameterization or the system behavior was not taken into account.
  • Page 23: Dc:av

    Continental Hydraulics Installation Manual DC:AV (Activation value) DC:DV (Deactivation value) DC:I (Integrator time) DC:CR (Integrator limitation) Command Parameter Unit Group x= 0… 2000 DC:AV 0.01 % x= 0… 1000 DC:DV 0.01 % x= 0… 2000 DC:I x= 0… 500 DC:CR 0.01 %...
  • Page 24: Ainmode

    Continental Hydraulics Installation Manual AINMODE The AINMODE is used to define the type of analog input signals being used. The standard default setting of AINMODE is EASY. In the EASY mode the SIGNAL:W/X/V (see page 13) are only available in the most commom 0-10 volt or 4-20mA values.
  • Page 25 Continental Hydraulics Installation Manual Analogue input scaling parameters Command Parameters Unit Group FUNCTION i = A|B a b c x AIN:I a= -10000… 10000 b= -10000… 10000 c= -10000… 10000 0.01% = V|C This command offers an individual scalable input. The following linear equation is used for the scaling.
  • Page 26: Troubleshooting

    Continental Hydraulics Installation Manual Troubleshooting It is assumed that the device is in an operable state and there is communication between the module and the CHI-PC. Furthermore, the valve control parameterization has been set with the assistance of the valve data sheets.
  • Page 27 Continental Hydraulics Installation Manual FAULT CAUSE / SOLUTION the READY LED is Various potential problems could be: on, and the system  The parameterization is not yet adjusted to the system (gain too high). oscillates on the  There is severe interference on the power supply.

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