AUMA Electric multi-turn actuators SA 07.1 - 48.1_SAR 07.1 - 30.1 NORM - Manual (Page 17)

11. Setting the torque switching
11.1 Setting
.
The set torque must suit the valve!
.
This setting should only be changed with the consent of the
valve manufacturer!
Setting CLOSED Setting OPEN
.
Loosen both lock screws O at the torque dial (figure L).
.
Turn torque dial P to set it to the required torque.
Examples:
Figure L shows the following setting:
35 ft lbs for direction CLOSE
25 ft lbs for direction OPEN .
Tighten lock screws O again .
The torque switches can also be operated in manual
operation. .
The torque switching acts as overload protection over full travel,
also when stopping in the end positions by limit switching.
11.2 Checking the torque switches
The red test buttons T and P (figure K-2) are used for manual operation of the
torque switches:
.
Turning T in direction of the arrow TSC (DSR) triggers torque switch CLOSED.
.
Turning P in direction of the arrow TSO (DÖL) triggers torque switch OPEN.
.
If a DUO limit switching (optional) is installed in the actuator, the intermediate
position switches will be operated at the same time.
17
Multi-turn actuators SA 07.1 – SA 48.1 / SAR 07.1 – SAR 30.1
Operation instructions AUMA NORM
Ft. Lbs Ft. Lbs
15 35
45
25
45 25
15
35
Figure L: Torque switching heads
indication in ft lbs
O
P