Gear Stage Of The Reduction Gearing: Test/Set - AUMA SA 25.1 Operating Instructions Manual

SA 25.1 SA 48.1/SAR 25.1
AC 01.2 Non-Intrusive Modbus RTU
10.2.2.

Gear stage of the reduction gearing: test/set

SAR 30.1 Control unit: electronic (MWG)
3. Move actuator to end position OPEN.
The arrow rotates in direction OPEN driving the indicator disc with symbol
(OPEN) until the actuator stops in position OPEN.
Figure 87: Operation in direction OPEN (left) and position OPEN (right)
4. Check settings:
The setting of the mechanical position indicator is correct, if the angle between
the symbols (OPEN) and
280°.
If all three discs are turned at the same time, the indicator can be shifted in
steps of 15°. Individual shifts of 5° are possible.
If the indicator is rotated too far (more than 280°) or if the angle is too small
(below 120°), adapt the gear stage setting to the actuator turns/stroke. Refer
to <Gear stage of the reduction gearing: test/set>.
The test/setting is only required if the mechanical position indicator cannot be correctly
set.
1. Refer to table and check if turns/stroke correspond to the setting of the reduction
gearing (stages 1
Table 25:
Turns of actuator per valve stroke and suitable reduction gearing setting
for 1 500 turns/stroke
[exceeding to]
1.0 1.9
1.9 3.7
3.7 7.9
7.9 15.0
15.0 31.5
31.5 60.0
60.0 126
126 240
240 500
Commissioning (settings/options in the actuator)
(CLOSED) ranges between approx. 120° and
9).
for 10 5,000 turns/stroke
[exceeding to]
10 19
19 37
37 79
79 150
150 315
315 600
600 1,260
1,250 2,500
2,500 5,000
Reduction gearing
Stage
1
2
3
4
5
6
7
8
9
71