Information
If the current value fluctuates (e.g. between 4.0 – 4.2mA), the <LED end position
signalling> must be switched off for current adjustment.
→
Operate valve in desired end position (OPEN/CLOSED).
→
Reduce current value: Press push button [S1]
(the current is reduced by 0.02 mA every time the push button is
pressed)
→
Increase current value: Press push button [S2]
(the current is increased by 0.02 mA every time the push button is
pressed)
10.1.3.
LED end position signalling: switch on/off
The LED behaviour for end position reached can be set as follows: blinking/continuous
illumination or no illumination. During setting mode, end position signalling is switched
on.
Switching on and off
1.
Operate valve in one of the end positions (OPEN/CLOSED).
2.
Hold down push buttons [S1] or [S2] for approx. 3 seconds.
➥
End position signalling is switched on or off.
Table 25:
LED behaviour when end position signalling is switched on
LED behaviour in end position
Set output current
LED is blinking slowly
4 mA
LED is blinking fast
0 mA
LED is illuminated
20 mA
10.2.
Potentiometer
The potentiometer is used as travel sensor and records the valve position.
Setting elements
The potentiometer is housed in the actuator switch compartment. The switch
compartment must be opened to perform any settings. Refer to <Switch compartment:
open>.
Setting is made via potentiometer [1].
Figure 65: View on control unit
[1]
Potentiometer
10.2.1.
Potentiometer: set
Information
Due to the ratio of the reduction gearing, the complete resistance range/stroke is not
always covered. Therefore, external adjustment (setting potentiometer) must be
provided.
1.
Move valve to end position CLOSED.
62
SQ 05.2 – SQ 14.2 / SQR 05.2 – SQR 14.2 Control unit - electromechanical
Commissioning (optional equipment settings)
AC 01.2 Intrusive Modbus RTU
