FAA-28, Technical Manual, Rev.1.1.0
February 2022
Page 16 of 21
5. Setpoints
5.1
Setpoint Connection
FAA-28 has 2 free relay contact output. These outputs can be connected to
maximum 230VAC or maximum 30VDC, maximum 1A loads. Reverse diode
connection to the DC loads is recommended to increase the relay contact life and to
reduce the disturbances. Outputs connection is;
5.2
Setpoint Adjustment
The instrument closes the relay contacts if the weight value is higher than the
adjusted setpoint. These contact signals can be used to stop charging or discharging
or produce alarm signal. You can apply two methods to adjust setpoints.
5.3
Adjustment to the Load on the Scale
Setpoint can be adjusted to the load value on the scale:
•
Load the scale to the value you want to produce setpoint signal
•
Turn the programming switch to
S1
(or
S2
) position from operation position
(from
V
or
I
position)
•
Turn the Adj. switch to positions
position and turn it back to
0
- position
2 seconds later
•
Turn the programming switch to analog output type position for operation
mode (
V
or
I
position) or to other setpoint position to adjust it
5.4
Adjustment by Measuring the Analog Output
You can adjust the setpoint by measuring the analogue output value without loading
the scale:
•
Connect the measuring instrument to the analog output.
•
Turn the programming switch to
S1
(or
S2
) position from operation position
(from
V
or
I
position).
•
Increase or decrease the analog output by adjustment rotary switch (refer to
Do not bring the adjustment switch position to
position in this adjustment.
The adjustment switch must be at
0
- position at the end of the adjustment.
•
Turn the programming switch to analog output type position to start operation
(
V
or
I
position) or to other setpoint position to adjust it.
