Det-Tronics UD10 DCU Emulator FlexVu Universal Display Unit - Manual (Page 16)

14 95-8656 4.2
OPTIONaL SYSTEm TESTS
The following tests are available for verifying proper
operation of various functions of the gas detection
system:
– The Self Test and Response Test are accessed from
the “Display Test” screen. (A “Device Test” screen
is available for performing the same tests on HART
enabled detectors.)
– The Proof Test is performed by applying test gas
to the sensor. It is not accessed from the “Display
Test” screen and does not inhibit the outputs.
Main Menu
Process Vars
Display Status
Device Status
Display Setup
Device Setup
Device Cal
Display Test
Device Test
Display Test
Self Test
Response Test
Self-Test
This test commands the UD10-DCU to perform a fully
automatic internal test. At the completion of the test,
the UD10-DCU will indicate a pass or fail.
Response Test
This test inhibits the UD10-DCU’s outputs, thereby
providing a means of testing the system by applying
gas to the detector without activating any alarms or
affecting the output.
noTe
If the Response Test is not terminated by the
operator, the test will automatically time out after
ten minutes and the UD10-DCU will return to
normal operation.
Proof Test
A Proof Test (bump test) can be performed at any time
to verify proper operation and calibration of the system.
Since this test does not inhibit the UD10-DCU’s outputs,
secure any output devices prior to performing the test to
prevent unwanted actuation.
hISTORY
There are two separate histories, one for the display
and one for the detector (if available). Both will state
the number of hours that the unit has been operating,
and the highest and lowest recorded temperature (with
time and date stamp).
DISPLaY baCkLIghT OPERaTION
The UD10 can be programmed to turn on the backlight
feature of the digital display when an alarm or fault
occurs or a magnetic switch is activated. Navigate to
the Backlight Ctrl screen.
Main Menu
Process Vars
Display Status
Device Status
Display Setup
Device Setup
Device Cal
Display Test
Device Test
Display Setup
Mode Select
General Options
Input Loop Cal
Contrast Contrl
Backlight Ctrl
Backlight Ctrl
Off
On
Automatic
Off = The backlight is always off.
On = The backlight is always on.
automatic = Normal operation – Backlight is off
Alarm – Backlight flashes on and off
Fault – Backlight is on steady
Magnetic Switch – Backlight is on steady
The backlight automatically turns off 10 minutes after the
last Magnetic Switch activation.
If the backlight is on following a magnetic switch
activation and then an alarm condition occurs, the
backlight will remain on steady and not flash until the 10
minute time-out is complete. Then it will begin flashing.