Detcon 10/12 Control Card Test Fixture - Manual (Page 8)

Model 10/12 Control Card Test Fixture
Page 8 of 10
Variable R4 & 24 100 Flashing 20.0
Note: The Variable mA position is normally set for 20.0 mA input. These potentiometers
can be adjusted to cause the mA input to cover the full range from 0 to 21+ mA. This is
useful for checking alarm set points and over-range conditions. The potentiometers are
turn. Center the fine potentiometer and adjust the coarse potentiometer to where you want
the mA input signal to be. Use the fine potentiometer for fine adjustments.
5 - Check alarm relay outputs.
Turn SW1 clockwise until ALM1, ALM2, and ALM3 LEDs on the Model 12 illuminate.
Verify that the corresponding alarm LEDs on the test fixture (D6, D7, and D8) also
illuminate. Return SW1 to the “4mA” position.
If alarms on the control card are programmed for latching, push the alarm reset button to
deactivate. Test the Remote Reset button on the test fixture by reactivating the (latched)
alarms and then use SW2 to reset.
Turn SW1 to the 0 mA position and verify fault LEDs illuminate on the control card as
well as the test fixture (D5).
6 - Alarm Disable. Turn SW1 clockwise until ALM1, ALM2, and ALM3 LEDs on the
Model 12 and Test Fixture panel illuminate. On the model 12, move the alarm disable
switch to the disable (down) position. This should cause the fault LEDs to illuminate on
the Model 12 and the Test fixture. The alarm LEDs on the test fixture (D6, D7, and D8)
should go off. Return the alarm disable switch to the “Able” position and SW1 to the
4mA position.
4.4 Model 12C Control Card
NOTE: These instructions are based on the assumption that the Model 12C control card
has already been calibrated and basic alarm options have been configured.
1 - Turn the power switch on. Note that the digital mA Output LED meter illuminates
with a reading of 00.0.
2 - Plug the Model 12C control card into J2.
3 - Note that the Sensor Power LED (D4) is illuminated. This indicates power from the
control card to the sensor.
4 - Verify mA input and output using the mA input range selector switch (SW1).
SW1 Position Mod 12C mA Output Display (±0.1)
0mA SENS 0.00