Detcon 10/12 Control Card Test Fixture - Manual (Page 6)

Model 10/12 Control Card Test Fixture
Page 6 of 10
Turn SW1 clockwise until ALM1 and ALM2 LEDs on the Model 10 illuminate. Verify
that the corresponding alarm LEDs on the test fixture (D6 and D7) 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).
4.2 Model 10C Control Card
NOTE: These instructions are based on the assumption that the Model 10C 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 10C control card into J1. The firmware version will display on power
up.
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 10C mA Output Display (±0.1)
0mA SENS 0.00
2mA CAL 02.0
4mA 00 04.0
12mA 50 (±1) 12.0
Variable R4 & 24 100 20.0
Variable R4 & 24 100 flashing 20.1 or greater
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. To test
flashing over-range, adjust the fine potentiometer to achieve an output greater than 20.0
mA.