Power Plugs for Proportional Valves (12 volt supply)

Transcription

1 VICKERS Accessories Plugs for Proportional Valves ( volt supply) EHH-AMP-7-D/G-* Series For use with valve types: KDGV-(S)-GP7-6* KTGV-(S)-GP7-6* KCG-/6/8-GP-* KX(C)G-6/8-GP-* KDG5V-5/7/8-GP-* CMX***-E-G EPV**-D-* ERV/**-D-* EPFR**-D-* General Description These plugs, conforming to ISO 00/ DIN 650 interface, offer low cost solutions for solenoid-operated, non-feedback hydraulic proportional valves through the use of an integral amplifier. Adjustments of gain, ramp time, deadband and dither can be made directly at the plug. The proportional plugs are controlled with 0-5V or 0- command signal to give an output current (adjustable with the gain control) of up to A maximum. Features and Benefits Integral amplifier provides essential functions for control of proportional valves Differential command signal option (type D) 8 volt reference option (type G) Electrical Block Diagrams EHH-AMP-7-D-* input V DC + + Command signal 0 k Ramp Dither Gain Deadband Adjustable ramp time Adjustable deadband compensation Adjustable gain Adjustable dither Ease of installation with reduced cost EMC to latest European standards Fully short-circuit and reverse polarity protected Protection to IP67 Max. limiter PWM amp. X Solenoid X EHH-AMP-7-G-* input V DC + Command signal 0 k Ramp Dither Gain Deadband Max. limiter PWM amp. X Solenoid X 5V ref. 00R This product has been designed and tested to meet specific standards outlined in the European Electromagnetic Compatibility Directive (EMC) 89/6/EEC, amended by 9/6/EEC, 9//EEC and 9/68/EEC, article 5. For instructions on installation requirements to achieve effective protection levels, see this leaflet and the Installation Wiring Practices for Vickers Electronic Products leaflet 68. Wiring practices relevant to this Directive are indicated by Electromagnetic Compatibility (EMC). August 996 GB-8C

2 Application and Model Codes Application Primary applications are the control of non-feedback proportional valves where the cost of sophisticated electronic controls can be avoided. Model Codes EHH-AMP-7- * - * The combination of proportional valve and plug offers very low cost solutions to many hydraulic actuator control problems requiring smooth acceleration and deceleration. D G Adjustment range = differential input: 5s maximum ramp time = 5V input: 5s maximum ramp time Design number, 0 series Subject to change. Installation dimension unaltered for design numbers 0-9 inclusive.

3 Operating Data Electrical Connections (input) supply Absolute maximum voltage Max. power consumption incl. solenoid Reverse polarity protected Short circuit protected Type D V DC (power and signal) Positive command signal Negative command signal Type G V DC (power and signal) Positive command signal 5V reference voltage 0.-6V DC including 0% maximum ripple (peak-to-peak) V DC nominal 6V 5W Yes Yes Maximum output current.0a Max. output voltage typical (A output Typically.5V below supply voltage current) Command signal 0- (0 kohms) 0-5V (0 kohms) Deadband triggering For output For no output Deadband adjustment range 00 mv 00 mv to 0 mv to 00 mv < ma 00 mv 00 mv to 5V 0 mv to 00 mv Gain adjustment range <0.075 A/V to 0. A/V >0.5 A/V to 0.6 A/V Dither adjustment range Ramp time PWM frequency Dither frequency Protection Isolation to VDE 00 Electromagnetic compatibility (EMC): Emission Immunity Mechanical Housing 0 to 500 ma 50 ms to 5s 00 Hz 0% 0 Hz 0% IEC 59: IP67 (when correctly installed with interface seal in place) Fully short-circuit and reverse-polarity protected Group B EN EN Mounting interface ISO 00 (DIN 650) Cable clamp Cable diameter PA6 glass-reinforced plastic (conforming to UL-9HB). Color: gray Pg9 screw type Ø 5 to 0 mm (0.97 to 0.9 dia) Wire section 0,5 to,0 mm (0.00 to 0.00 in ) (0 AWG-7 AWG) Temperature, ambient range 0 to 70 C ( to +58 F) Mass 0,07 kg (0.5 lb)

4 Input/Output Characteristics Command signal voltage U S 8V 6V V V Time Output current U S Gain setting Deadband compensation Time Ramp setting Installation Dimensions in mm (inches) rd angle projection 88 (.5) (0.87) 9 (.5) Solenoid Connections (.) (or ) No connection 8 (.5) (or )

5 Installation Data Adjustments Gain Ramp Deadband Dither Ramp time: Turn clockwise to increase ramp time. Gain: Turn clockwise to increase gain. Terminal : supply 0.V-6V DC, positive. Terminal : supply. Deadband compensation: Turn clockwise to increase deadband compensation current. Terminal : Command signal positive (see Operating Data ). LED Dither: Turn clockwise to increase the dither current. Terminal : Type D: Command signal negative. Type G: +5V reference. Installation Wiring Options Positive Command Voltage + +V EHH-AMP-7-D-0 Bi-polar Command Voltage for Operating Two Solenoids from One Signal EHH-AMP-7-D-0 + +V Negative Command Voltage +V EHH-AMP-7-D-0 +V External 5V Command Signal +5V +V EHH-AMP-7-G-0 EHH-AMP-7-D-0 Internal 5V Command Signal +V EHH-AMP-7-G-0 k Customer s protective ground connection. Warning: Electromagnetic Compatibility (EMC) Screened cables should be used and particular attention paid to the grounding of the screens as shown in the above diagrams. 5

6 Assembly Showing Wiring Connection Points Warning Ensure cable clamp nut is adequately tightened to secure the cable. Do not connect, or disconnect, the plug while power is on. Do not mount, or dismount, the plug while power is on. Wiring Preparation 0,5-,0 mm (0 AWG-7 AWG) 5 (0.) Ø5-0 ( dia) 0 (.6) All seals must be fitted correctly at plug installation to provide protection to IP67 (IEC 59). 6

7 Start-Up Procedure. Correctly wire the plug (see drawing on previous page) then, before mounting the plug on the valve solenoid, apply V DC (0, to 6V limits) to the power input terminals.. Check for correct plug function by illumination/non-illumination of the LED. The LED should illuminate when the command signal is applied, and should not be illuminated when the signal is less than 00 mv. If there is a malfunction then a new plug must be fitted. Spare Parts The only spare part available is the interface seal, part number 700. Ordering Procedure Order plug by full model code, and spare interface seals by part number.. Switch off power supply and command signal and then install the plug on the solenoid. Ensure that the seal is correctly fitted and clamped when the retaining screw is tightened: this is essential in providing IP67 protection.. Ensure that the hydraulic system will not cause any erratic movement of actuators, then: Switch on power supply again. Repeat LED/function check as in. An LED malfunction now indicates a short circuit at the load. 5. Successful completion of these checks means that the plug and load are ready for use. 7