Det-Tronics EQP Fire and Gas Detection/Releasing System - Manual (Page 91)

14.1 95-8533 4-14
ANALOG INPUT MODULE
The Analog Input Module (see Figure 4-8) has 18 LED
status indicators, two for the device and two for each
channel, located on the front panel. Refer to Tables
4-10 and 4-11 for a description of the LED indicators.
POWER-UP SEQUENCE
Set the module address switch prior to applying power.
The Analog Input Module power-up sequence
illuminates the LEDs for the device and all of its
channels. First the power and fault LEDs are
illuminated, indicating that the device is in a power-up
mode. Next the LEDs are illuminated in the following
sequences:
• Sequentially each channel active red LED is
illuminated, starting with channel 1 and continuing
through channel 8.
• When the red LED for channel 8 is illuminated,
sequentially each channel active red LED is turned
off, starting with channel 1 and continuing through
channel 8.
• Next, the channel fault amber LEDs are tested in the
same manner as the channel active red LEDs.
When all the LEDs have been illuminated, the analog
input module displays the device’s LON address by
illuminating the channel active red LED. LON dip
switches 1 through 8 will be displayed on channels 1
through 8. When a dip switch is set to the ON
position, the channel active red LED will be
illuminated. The address is displayed for two
seconds.
Once the address has been displayed, the device’s
fault LED will turn off.
After the power-up sequence, the device will either
display an unconfigured state or normal operation
state. In the unconfigured state, the channel fault
amber LEDs flash ON and OFF at the same rate for all
channels.
Table 4-10—Analog Input Module - Device Status Indicators
LED Device Status
Green On when power is present.
Amber When On steady indicates device is disabled or
must be replaced. Possible Watchdog Timer
problem.
Note
Blinks one time at power-up.
Table 4-11—Analog Input Module - Channel Status Indicators
LED Channel Status
Red When Blinking indicates a low alarm.
When On Steady indicates a high alarm.
Amber When Blinking indicates a low power condition is
present or channel is not properly configured. On
steady indicates out of range condition.
Figure 4-8—Analog Input Module Status Indicator Location
STATUS INDICATOR LEDs