AUMA SQEx 12.2 Manual

Commissioning (optional equipment settings)
36
a) Both measuring ranges 0/4 – 20 mA and 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, the Switch on/off LED end position signaling [}37] has to
be switched off first when setting the measuring range.
c) Setting mode activation clears the setting 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]).
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:
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 Faults during
operation/commissioning [}39].
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):
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 push button [S2] for approx. 3 seconds,
until LED is illuminated
.
4. Operate valve into opposite end position.
ð The value set in end position (0/4 mA or 20 mA) does not change during travel
in setting mode.
5. Perform setting in the second end position following the same steps.
6. Approach both end positions again to check the setting.
ð If the measuring range cannot be set: refer to Faults during operation/commis-
sioning [}39].
ð If the current values (0/4/20 mA) are incorrect: refer to Adjust current values
[}36].
ð If the current value fluctuates (e.g. between 4.0 – 4.2 mA): Switch off LED end
position signaling. Refer to Switch on/off LED end position signaling [}37].
11.3.2
Adjust current values
The current values (0/4/20 mA) set in end positions can be adjusted at any time. Con-
ventional values are 0.1 mA (instead of 0 mA) or 4.1 mA (instead 4 mA).

AUMA SQEx 12.2 Specifications

General

Brand	AUMA
Model	SQEx 12.2
Category	Controller
Language	English