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KYSSSUNPV0 - Replacing Rexroth DBET and Proportional valve with Sun Direct wired Proportional Valve

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KYSSSUNPV0 - Replacing Rexroth DBET and Proportional valve with Sun Direct wired Proportional Valve
Older multi manifold presses used Rexroth proportional valves and a control card (DBET) to control the pressure of the hydraulic pump. Newer Single manifold presses use a SUN proportional valve that has less parts and is less expensive. You can utilize the newer valve design and replace the Rexroth components on an older press. HYSSSUNPV0

Parts needed:

96RH708BDY - Qty 1 - valve body that bolts to Daman manifold and allows SUN proportional valve to adapt.
96RH708E39 - Qty 1 - PROPORTIONAL VALVE SUN #RBAP-XWN
96RH713R03 - Qty 1 - COIL 24VDC SUN 790-2B24V
12M4240V9F - Qty 1 - Solenoid Connector - 4 wire - 5M
09B067 - Qty 4 - Butt Splices
12M043F037 - Qty 1 - Liquid Tite
12M043L037 - Qty 1 - Liquid Tite

Parts

Circuitry Updates

You will need to wire in the new proportional valve directly to the D to A board, 24VDC and 0VDC. Use the picture below for reference.
Connect Wire 1 (brown) to TB7. This is 0VDC.
Connect Wire 2 (blue) to TB101. This is 24VDC.
Connect Wire 3 (black) to MTA43-3. The existing wire will be cut and butt spliced to Wire 3.
Connect Wire 4 (green / yellow) to TB7. This is the signal ground.

Proportional Valve Circuit

Programming Updates

PID constants may have to change to support the new valve.  Program the gains as follows if pressure overshoots desired.  
KP  - 160
KI -  003
KD - 220

Side view of Sun proportional valve and body on Daman manifold
729567212.jpg


Front view of Sun valve and body and coil on left side of Daman manifold.  
IMG_3744.jpg


Older replaced part numbers are:
96RH708A03 ELECT.AMPLIFIER CARD-PRESS
96RH708A04  CARD HOLDER
96RH708A05 4 PLUG CONNECTOR-REXROTH 
96RH708A06 6X AMPLIFIER CARD 
96RH708A3T ELE AMPLIFIER CARD-PRESS+TAG
96RH708A6T 6X AMP CARD + INSTRUCTIONS 
96RH708E37 PROPORTIONAL RELIEF VALVE 
96RH708E38
 
 
 

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