Specifications

GOLDCUP CONTROLS SERIES 900
3. Lock screw in this position.
4. Apply signal current to proportional valve. Adjust current from minimum to maxi-
mum. Note the pressure and current value at which motor just starts to reduce stroke,
and at which the motor reaches minimum stroke. These must be within the following
values:
5. If control pressure is off the same amount at start and end of stroke, the control
may be disassembled and the spring (Figure 2) readjusted. One flat (1/6 turn) of
adjustment will change the pressure by 4.6 psi (0.31 bar).
6. If the change in pressure from start to end of stroke is incorrect, the spring (Figure
2) is incorrect and must be replaced.
7. If pressures are correct but current is incorrect, then either the coil is incorrect or
the proportional valve is bad.
8. With minimum signal, motor shall return to full stroke.
9. Increase and decrease current between minimum and maximum several times.
Motor stroke should follow control pressure smoothly and proportionally. Full to min. or
min. to full stroke should be achieved in no more than two seconds. Adjust stroke
down to approximately 50% stroke from full stroke, then adjust up from 25% stroke to
the same signal. The speed at the two settings shall vary no more than 25%.
10. When control has satisfactorily passed test, remove stop assembly, set and lock
the two nuts on the inside to prevent adjustment below 25% stroke. Re-install stop.
90
Coil Cont. Pr. Ma. Min. Cont. Pr. Ma
Max. Disp. Disp. Min. Disp. Min. Disp.
12 Volt 75 ±15psi 360 ± 60 205±25psi 580 ± 100
(5.17±1bar) (14.1±1.7bar)
24 Volt 75±15psi 180 ± 30 205±25psi 290 ± 50
(5.17±1bar) (14.1±1.7bar)