2. Operate actuator using push buttons OPEN - STOP - CLOSE.
➥
The limit switching is set correctly if (default indication):
- The yellow indication light/LED1 is illuminated in end position CLOSED
- The green indication light/LED5 is illuminated in end position OPEN
- The indication lights go out after travelling into opposite direction.
➥
The limit switching is set incorrectly, if:
- The actuator comes to a standstill before reaching the end position
- One of the red indication lights/LEDs is illuminated (torque fault), or the following
fault signals are displayed:
-
Status indication
S0: FAULT IND.
-
Status indication
S1: TORQUE FAULT (OPEN) or TORQUE FAULT
(CLOSE)
3. If the end position setting is incorrect: Reset limit switching.
4. If the end position setting is correct and no options (e.g. potentiometer, position
transmitter) are available: Close switch compartment.
9.11.3 Reference operation position feedback: perform
For actuators with position feedback (RWG, potentiometer), a reference operation
has to be performed once the limit switching setting was changed to ensure that the
position feedback (0/4 – 20 mA) supplies correct values:
→
Operate actuator electrically (via the push buttons OPEN and CLOSE of the local
controls) once to the end position OPEN and once to the end position CLOSED.
If no reference operation is performed after changing the limit switching, the feedback
signal via the bus is not correct.The bus signals the missing reference operation as
a warning.
9.12 Potentiometer setting
— Option —
The potentiometer as travel sensor records the valve position.
Information This setting is only required if the potentiometer is directly wired to the customer
connection XK (refer to wiring diagram).
Information Due to the ratio of the reduction gearing the complete resistance range/stroke is not
always passed.Therefore, external adjustment (setting potentiometer) must be pro-
vided.
Figure 51: View of control unit
[1] Potentiometer
1. Move valve to end position CLOSED.
2. Turn potentiometer [1] counterclockwise until stop is felt.
➥
End position CLOSED corresponds to 0 %
➥
End position OPEN corresponds to 100 %
52
SG 05.1 – SG 12.1/SGR 05.1 – SGR 12.1 Control unit: electromechanic
Commissioning (basic settings) AC 01.1 Intrusive Modbus RTU