7
Multi-Function Proportional Valve Dual Driver ( Encapsulated )
Initial Dry set-up
procedure:
1) Isolate electric motor drives to the hydraulic pumps.
2) Ensure that all connections conform with one of the suggested schematic diagrams shown in this manual.
3) Check that all connections are secure and NOT shorting together OR to the case OR any other equipment.
4) Ensure that ALL the links needed are fitted and configured to suit the required application, product and available signals.
5) Install a ‘Current meter’ in line with the ‘A’ output, set to a relative current range.
6) Make sure that ( If Fitted ) the ‘Emergency Stop’ switch is closed and connected to correct supply voltage.
6) Apply power ( +12V +/-10% OR +24V +/-20% ) to the unit and ensure that the ‘Power On’ light is on and bright.
8) Move the joystick or command potentiometer until Approx.. +10% of chosen configured command is achieved.
9) Set ‘I Min’ A to give Approx.10% of the valve products maximum drive current ( see valve literature ) on the relative meter.
10) Ensure that front panel indicator ‘Output A’ lights ( Dimly )
11) Move the joystick or command potentiometer until +100% of chosen configured command is achieved.
12) Set ‘I Max’ A give 100% of the valve products maximum drive current ( see valve literature ) on the relative meter.
13) Ensure that front panel indicator ‘Output A’ lights ( Brightly ).
14) Repeat steps 8) throe 13) until required Min & Max currents are reached for +10% and +100% command signal input.
15) Open ‘Emergency Stop’ switch and check that:- a) Active Outputs immediately go to zero mA.
b) ‘Emergency Stop’ front panel Indicator lights.
16) Set command signal to zero position.
17) Reset ‘Emergency Stop’ switch to closed position and ensure that ‘Emergency Stop’ Indicator light goes OUT.
18) Repeat steps 8) thro 17) using -10% and -100% command signal values and moving the current meter to the ‘B’ output.
Final ‘Live’
calibration
procedure
1) Ensure that ALL moving parts are guarded and personnel are aware of a ‘LIVE’ system run.
2) Ensure joystick or command potentiometer is at zero position with zero % command output.
3) Start hydraulic power pack and wait until constant speed / set pressure has been achieved.
4) Move the joystick or command potentiometer SLOWLY until Approx. +10% of chosen configured command is achieved.
5) Monitor hydraulic product being controlled and set ‘I Min’ A to give desired minimum flow or pressure.
6) Move the joystick or command potentiometer SLOWLY until +100% of chosen configured command is achieved.
7) Monitor hydraulic product being controlled and set ‘I Max’ A to give desired maximum flow or pressure.
8) Repeat steps 4) thro 7) until required minimum and maximum system flows are achieved for +10% and +100% command.
9) Set command signal to zero position.
10) Repeat steps 4) thro 7) using -10% and -100% command signal.
11) Set command signal to zero position.
Electrical
specifications:
1) Board Style: Denison Hydraulics Unique Size and Mounting.
2) Connector Type: Heavy Duty Two Part Polarised ‘Screw’ Type Terminal Connectors.
3) Input Supply Voltage(s): +10 - +32 VDC ( Max ) ( set supply volts the same as coil voltage )
4) Input Supply Current ( Max ): Maximum Valve Current Setting + 200mA Quiescent (Max)
5) User Output Voltages: +/- 5V D.C. ( +/- 5% ) Rated @ 5mA Per rail.
6) Command Input Type(s): D.C. Voltage and Current.
7) Command Input Value(s): +/-5V, +/-10V & 0 to +/-20mA
8) Available adjustments: I Min ‘A’, I Max ‘A’, I Min ‘B’, I Max ‘B’, Ramp UP, Ramp DOWN.
9) Ramp Type: Linear and Continuously Variable by 20 Turn ( +/- 5 Turns ) Potentiometers
10) Min Ramp Time UP: 20mS ( +/-20% )
11) Maximum Ramp Time UP: 10S ( +/-20% )
12) Min Ramp Time DOWN: 20mS ( +/-20% )
13) Minimum Ramp Time DOWN: 10S ( +/-20% )
14) Dither Frequencies : Link Selectable 100Hz, 140Hz, 240Hz ( All +/- 20% )
15) Environmental: ‘ENCAPSULATED’ Printed Circuit Board.
16) IP Rating for PCB Only: IP65 ( Without Being Mounted In External Enclosure )
17) IP rating for Housing: IP56 ( Due to user accessibility of connector screw terminals. )
18) Humidity: 90% Non Condensing.
19) Storage temp.: 80 Deg C ( Max )
20) Working temp.: 60 Deg C ( Max )
