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Continental Hydraulics Installation Manual 

 

Page 1 of 20 

CEM-BPS-B 

CHI 1020813   Jan 2016 

 

CEM-BPS-B 

 

 
 

Description: 

 
This closed loop position module has been developed for controlling hydraulic synchronization 
systems. The typical synchronization accuracy is about 0.1% to 1% of the sensor length 
(depending on the hydraulic system).   Proportional valve 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. 

This module is designed for use within a flow divider circuit. A flow divider (valve or gear pump) 
will synchronize the axis but with limited accuracy. A proportional valve working in parallel to the 
flow divider is compensating the flow error in one or both cylinders. The flow rate of this valve 
should be in twice range of the flow error of the flow divider. This kind of synchronization control 
is extremely stable and simple to use. 

With the 

AUTO SETUP 

input feature, the offset error between both sensors can be measured 

and compensated automatically. For this setup, the cylinders must be driven at the top or bottom 
end.  

The internal profile generation is optimized for stroke-dependent deceleration 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 the high resolution of the analog signals ensures good positioning 
behavior. A wide range of analog signals are accepted.  User may select either voltage or current 
input mode.

 

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. 
 
 
 

 

Summary of Contents for CEM-BPS-B

Page 1: ...nd of synchronization control is extremely stable and simple to use With the AUTO SETUP input feature the offset error between both sensors can be measured and compensated automatically For this setup...

Page 2: ...pply 6 Wiring 6 Terminal Identification 7 Steps to install and configure a new application 8 Commissioning 9 Parameter Overview 10 LED Indications 11 Command Parameter Descriptions LG Language 12 MODE...

Page 3: ...um resolution 1 m 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...

Page 4: ...Continental Hydraulics Installation Manual Page 4 of 20 CEM BPS B CHI 1020813 Jan 2016 Functional Diagram...

Page 5: ...Continental Hydraulics Installation Manual Page 5 of 20 CEM BPS B CHI 1020813 Jan 2016 Typical Schematic Example Typical Wiring Example...

Page 6: ...supply a star shaped ground wiring scheme is recommended The following points must be observed when wiring The signal cables must be laid separately from power cables Analogue signal cables must be s...

Page 7: ...utputs Terminal 8 Enable input General enabling of outputs and the application Terminal 7 START RUN input ON The Synchronization controller is active OFF The Synchronization controller is not active A...

Page 8: ...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 upl...

Page 9: ...TINGS and DECELERATION Parameterize specific settings for the control element MIN for deadzone compensation and MAX for maximum velocity Pre parameterization is necessary to minimize the risk of uncon...

Page 10: ...SIGNAL X1 U0 10 Type of input N_RANGE X1 100 mm Sensor nominal length OFFSET X1 0 m Sensor offset SIGNAL X2 U0 10 Type of input N_RANGE X2 100 mm Sensor nominal length OFFSET X2 0 m Sensor offset Clos...

Page 11: ...rmal 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...

Page 12: ...t influence on system behavior and should accordingly be changed with care SENS monitoring of the module functions Command Parameters Unit Group SENS x x ON OFF AUTO STD This command is used to activa...

Page 13: ...active motion profile the output to the valve is ramped to zero INPOS Size of the control deviation window Command Parameters Unit Group INPOS x x 2 200000 m STD This parameter is entered in m The INP...

Page 14: ...is available for all analog inputs X1 and X2 OFF Deactivation of the input N_RANGE X Nominal range of the sensor Command Parameter Unit Group N_RANGE i x i X1 X2 x 10 10000 mm EASY N_RANGE nominal ran...

Page 15: ...mple the system is defined by a length of 120 mm of the sensor a working stroke of 100 mm of the cylinder and an offset of 5 mm These parameters have to be typed in and the axis is driving between 5 m...

Page 16: ...istance must also be adjusted Otherwise this can result in instability and uncontrolled movements PT1 Timing of the controller Command Parameters Unit Group PT1 x x 0 300 ms EXP This parameter can be...

Page 17: ...t can also lead to longer positioning times in individual cases LIN Linear deceleration characteristic gain is increased by a factor of 1 SQRT1 Root function for braking curve calculation The gain is...

Page 18: ...justment is performed either at the power amplifier or in the module If the MIN value is set too high this has an effect on the minimum speed which can then no longer be adjusted In extreme cases this...

Page 19: ...I4 12 20 U 10 I20 12 4 EXP This command is used to define the output signal voltage or current and to change the polarity4 Differential output 100 corresponds with 10 V 0 10 V at PIN 15 and PIN 16 Cu...

Page 20: ...polarity can be changed with the POL command or by reversing the connections to PIN 15 and PIN 16 ENABLE and START are active the READY LED is on the STATUS LED is not on and a tracking error is not...

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