Structure and Function
A: PL120101.054
B: PL120100.054
E: 03.93 / T. Weiß
G: 06.93 / T. Weiß
Chapter: 5.4
Page: 4
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Speed setting is done by means of a proportional choker
valve, which is activated by the proportional amplifier.
For speed setting, the following steps have to be taken in that
order:
a) Set the “Dither” potentiometer at 50% (clockwise direction,
50% are 10 rotations = original manufacturer’s setting).
b) Preset the speed at 20% for the “Metering” process.
c) Activate the “Metering” process and set the potentiometer
“I-min” so that the following speeds are attained if 20% are
preselected:
Standard hydraulic motor OMS 80 -> Screw speed 84 revs/
min (hydraulic motor speed: 92 revs/min).
Special hydraulic motor OMS 100 -> Screw speed 66 revs/
min (hydraulic motor speed: 72 revs/min).
d) Preset 100% speed for “Metering” process.
e) Activate the “Metering” process and preset the maximum
speed using the “I-max” potentiometer.
Standard hydraulic motor OMS 80 -> Screw speed 420 revs/
min (hydraulic motor speed: 462 revs/min).
Special hydraulic motor OMS 100 -> Screw speed 330 revs/
min (hydraulic motor speed: 363 revs/min).
f) Repeat setting instructions b, c, d, e until the settings are
correct.
g) Set potentiometer “Rampenzeit” at 0% (anti-clockwise
rotation to limit stop = 50 msec = original manufacturer’s
setting).
5.4.9 Pressure setting of proportional valve amplifier EM 1010