14.
Setting the torque switching
14.1 Setting
.
The set torque must suit the valve!
.
This setting must only be changed with the consent of the
valve manufacturer!
.
Loosen both lock screws O at the torque dial (figure 28).
.
Turn torque dial P to set it to the required torque (1 da Nm = 10 Nm).
Example:
Figure 28 shows the following setting:
3.5 da Nm = 35 Nm for direction CLOSE
4.5 da Nm = 45 Nm 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.
14.2 Checking the torque switches
The red test buttons T and P (figure 26) are used for manual operation of
the torque switches:
.
Turning T in direction of the arrow TSC (DSR) triggers torque switch
CLOSED.
The red indication light (fault) on the local controls is illuminated.
.
Turning P in direction of the arrow TSO (DÖL) triggers torque switch
OPEN.
The red indication light (fault) on the local controls is illuminated.
.
If a DUO limit switching (optional) is installed in the actuator, the intermedi-
ate position switches will be operated at the same time.
.
After checking the switches, the fault (red indication light) has to be reset
using the OPEN or CLOSE push buttons of the local controls for operation
in the opposite direction.
24
Multi-turn actuators SA 07.1 – SA 30.1/SAR 07.1 – SAR 30.1
with actuator controls AUMA MATIC AM 01.1/AM 02.1
Operation instructions
Figure 28: Torque switching heads
Setting CLOSED
Setting OPEN
O
O
P
O
