Adjust Current Values - AUMA SQ 05.2 Operating Instructions Manual

For 2-wire systems read current values at test device.
Activate setting mode 1. Press both push buttons [S1] and [S2] and hold down for 5 seconds:
LED
Set measuring range 2. Operate valve in one of the end positions (OPEN/CLOSED).
3. Set desired output current (0/4 mA or 20 mA):
4. Operate valve into opposite end position.
5. Perform setting in the second end position following the same steps.
6. Approach both end positions again to check the setting.

11.3.2 Adjust current values

The current values (0/4/20 mA) set in end positions can be adjusted at any time. Typ-
ical values are 0.1 mA (instead of 0 mA) or 4.1 mA (instead 4 mA).
a) Measuring range 0/4 – 20 mA as well as measuring range 20 – 0/4 mA (inverse
operation) can be set.
During setting process, the measuring range (normal or inverse operation) is as-
signed to the end positions by push button S1/S2 assignment.
b) For 2-wire systems, switch off LED end position signalling prior to setting the
measuring range. Refer to
c) Setting mode activation clears the settings in both end positions and sets the out-
put current to a value of 3.5 mA. After activation, both end values (0/4 mA and 20
mA) need to be reset.
d) In case of inadvertent incorrect adjustment, the settings can always be reset by
renewed activation of the setting mode (simultaneous pressing of [S1] and [S2]).
ð By pulsing double flashes, the LED indicates that the setting mode is correctly
activated:
ð For any other LED flash sequence (single/triple flashing): refer to
operation/commissioning
ð for 4 mA: Hold down [S1] for approx. 3 seconds,
until LED is blinking slowly
ð for 0 mA: Hold down [S1] for approx. 6 seconds (only possible for 3-/4-wire
version)
until LED is blinking fast
ð for 20 mA: Hold down [S2] for approx. 3 seconds
until LED is illuminated
ð The value set in end position (0/4 mA or 20 mA) does not change during travel
in setting mode.
ð If the measuring range cannot be set: refer to
sioning [} 40].
ð If the current values (0/4/20 mA) are incorrect: refer to
[} 37].
ð If the current value fluctuates (e.g. between 4.0 – 4.2 mA): Switch off LED end
position signalling. Refer to
Commissioning (optional equipment settings)
Switch on/off LED end position signalling
[} 40].
.
.
.
Faults during operation/commis-
Switch on/off LED end position signalling
[} 38].
Faults during
Adjust current values
[} 38].
37