Sharp WQ-700H Specifications Page 67
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GOLDCUP CONTROLS SERIES 700
FINAL ADJUSTMENT AND TEST
11. For RVDT assembly, slip sleeve (15) into clamp (6).
12. Install RVDT or potentiometer assembly into clamp (6), aligning the brace with the
attaching hole in the cover, centering the servo arm and maintaining the alignment of
the shaft as above. Tighten the clamp nut to 60 lbs-in. (6.8 Nm).
13. Install screw (27). Tighten this screw, and tighten screw (31).
14. Wrap wires once around the RVDT or pot. Feed wires through the drilling in the
cover plate (18). Slip tubing (36) over pot. wiring bundle. Trim excess wiring.
15. Slide O-ring (23) and tubing (37) over wires. Solder wires to connector (22) per
wiring diagram. Slip tubing (37) over each terminal and heat shrink in place.
16. Place a drop of Loctite #271 on one end of each threaded stud (12). Install acorn
nut (13) on this end and tighten.
17. Install two O-rings (20) in housing (28).
18. For pot. assemblies, assemble clamp ring (33) and cover (11), to housing (28),
with red dots to inside. Insert four studs with acorn nuts. Assemble indicator (34) with
screw (15) to pot. (25). With servo arm centered, align indicator to match center dot
on cover (11) as installed. Lock in position. Install housing assembly to cover plate
(18). Torque to 48 in.-lbs. (5.42 Nm).
19. For RVDT assemblies, assemble cover (11) to housing and install on cover plate
(18) using four studs (12) with nuts (13). Torque to 48 in.-lbs. (5.42 Nm).
20. Place two spring washers (3), nested with the bent sections matching each other,
into the large hole in the servo link.
21. Place washer (10) against the spring washers.
22. Install O-ring (2) into groove in the remaining shear seal (1). Note: This shear
seal does not contain the two .094” (2.4 mm) radius scallops in the face. Place on top
of washer (10). Position shear seal to match the lip on the servo link.
23. Install on pump output control side, engaging servo arm between the spacer and
the anti-backlash spring. Align control with housing dowels. Attach with screws (29),
new Nyltite washers (30), and gasket (14). Torque screws to 30 lbs-ft. (40.8 Nm).
Attach electrical connector to plug.
1. Remove housing from feedback control. Loosen clamps on feedback pot. or RVDT.
Connect voltmeter between output terminal and common ground. Turn on power.
Start pump and confirm that feedback polarity is correct, and servovalve is functioning
correctly. (Pump may be controlled through its entire stroke range).
2. Set the displacement command to zero volts, and set the electronic zero adjust-
ment to zero volts.
3. Rotate the feedback pot. or LVDT as necessary to bring the pump to zero stroke, as
indicated by minimum system pressure and pump noise.
4. At this point, voltmeter reading should be less than +/-0.1 volts. If not, adjust the
electronic zero adjustment till feedback voltage is zero volts, then re-adjust the feed-
back pot. or LVDT to bring the pump to zero stroke at zero volts feedback. If the wiper
is within +/- 0.1 volts, the electronic zero adjustment can correct for this error.
5. Shut off pump and control power. Lock the feedback pot. or LVDT in place. If indi-
cator is not aligned with center red dot, relocate and lock in position. Install housing
assembly on control and torque nuts to 48 in.-lbs. (5.42 Nm).
67
Note: Before installing the RVDT to servo shaft, align the scribe mark on the shaft
with the scribe mark on the housing. Before installing the potentiometer, align the
wiper, (terminal 4), with the center tap, (terminal 2) Caution! limit electrical current
through any terminal on the pot. to 8 ma maximum to avoid damage to resis-
tance element!
Note: Always have power off when loosening or tightening clamps on feedback pot.,
to avoid shorting out the electrical terminals and damaging the pot. or the electrical
control. Caution! to avoid damage to RVDT check for correct polarity of D.C. signal
to RVDT before applying power.
- DENISON HYDRAULICS 1
- GOLDCUP CONTROLS CONTENTS 3
- See Figure 1 7
- GOLDCUP CONTROLS SERIES 100 9
- FIGURE 1 9
- See Figure 2A 10
- GOLDCUP CONTROLS SERIES 200 11
- PARTS LIST 12
- FIGURE 2A 13
- CYLINDER CONTROL 13
- S23-12329 13
- See Figure 2H 14
- S23-12358 16
- FIGURE 2H 17
- 3 POSITION CYLINDER 17
- ADJ. MAX. VOLUME STOPS 17
- See Figure 4A 18
- GOLDCUP CONTROLS SERIES 400 19
- For Figure 4A - Rotary servo 20
- FIGURE 4A 21
- ROTARY SERVO 21
- See Figure 4C 22
- ASSEMBLY 23
- S23-12343 - 4B* Fixed stops 25
- See Figure 5A 27
- GOLDCUP CONTROLS SERIES 500 28
- TEST, PUMP CONTROL 28
- TEST, MOTOR CONTROL 28
- S23-12346 32
- FIGURE 5A-1 33
- SPRING CENTERED WITH TRIMMER 33
- S23-12540 - 5A* A Mtg 34
- 23-12539 - 5A* B Mtg 34
- S23-12540 35
- See Figure 5C 36
- See Figure 5C-1 37
- See Figure 5-C 38
- DRAWING PAGE 41
- FIGURE 5C 41
- S23-12347 42
- FIGURE 5C-1 43
- BRAKE AND BYPASS VALVE 43
- See Figure 60 44
- See Figure 60-1 44
- GOLDCUP CONTROLS SERIES 600 46
- FIGURE 60 47
- HYDRAULIC STROKER 47
- For Figure 60-1 - Servo for 48
- See Figure 6A 49
- See Figure 6A-1 49
- PUMP CONTROL PRESSURE 51
- MOTOR CONTROL PRESSURE 51
- For figure 6A hydraulic 52
- See Figure 6B 54
- See Figure 6B-1 54
- FIGURE 6B 57
- WITH BRAKE AND BYPASS VALVE 57
- For Figure 6B-1 - Brake and 59
- FIGURE 6B-1 60
- See Figure 6C 61
- FIGURE 6C 64
- ADJUSTABLE STOPS 64
- See Figure 7 66
- GOLDCUP CONTROLS SERIES 700 67
- FINAL ADJUSTMENT AND TEST 67
- INSTALLATION OF ANTI-BACK 68
- LASH SPRING 68
- SK-15045 68
- FIGURE 7 70
- FEEDBACK FOR 700 SERIES HI IQ 70
- SERVO VALVE CONTROL 70
- See Figure 8A 71
- See Figure 8A-1 72
- GOLDCUP CONTROLS SERIES 800 74
- MOTOR CONTROL SPRING 74
- ADJUSTMENT 74
- See Figure 8C 78
- See Figure 8C-1 79
- See Figure 8C-2 79
- PUMP CONTROL SPRING 80
- S23-12820 82
- Feature 00 82
- FIGURE 8C 84
- See Figure 9A 87
- 9A CONTROL TEST SETUP 89
- 9A PUMP TEST 89
- 9A MOTOR TEST 89
- Figure 9A Electric stroker 91
- FIGURE 9A 93
- ELECTRIC STROKER 93
- See Figure 9C 94
- S23-12925 (Feature 00) 98
- GOLDCUP CONTROLS SERIES 900 100
- FIGURE 9C 100
- BYPASS VALVE 100
- See S23-12299 101
- One side center controls 102
- See S23-12298, S23-12300 102
- (1 SIDE OF CENTER) 105
- CW-B CCW-A 105
- S23-12298 105
- CONTROL TORQUE LIMITER 105
- (BOTH SIDES OF CENTER) 106
- S23-12299 106
- CW-A, CCW-B 107
- S23-12300 107
- For stroke indicator 109
- GOLDCUP CONTROLS SEAL KITS 110
- DEFINITION & UNIT 111
- FLUID POWER FORMULAS 111
- SALES AND SERVICE WORLDWIDE 116
- Printed in U.S.A 116
- OPI 2M 10203 116
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