Orion System OE256-05 Wall Mounted v.1 - Manual (Page 6)

WALL MOUNTED E-BUS CO
2
SENSOR
Technical Guide 6
Troubleshooting
Using LEDs to Troubleshoot
LEDs are available for troubleshooting the CO
2
Sensor. The LEDs are
ON when Dipswitch 8 is on. The LEDs are off when Dipswitch 8 is off.
The Front LED is visible through the front cover of the CO
2
Sensor. See
Figure 5 for location. The other LEDs are located on the Sensor’s board
and are only visible by taking the device off the wall and removing the
back cover. See Figure 4 for locations.
Front LED
When the LEDs are turned on, a green LED will be visible through the
front plastic cover of the CO
2
sensor. See Figure 5. The Front LED
will blink whenever a CO
2
sample is taken. A sample is taken every
30 seconds.
STATUS LED
Initially, the STATUS LED blinks fast for 30 seconds. It then stays on
and blinks the board address whenever a CO
2
sample is taken. A CO
2
sample is taken once every 30 seconds.
COMM LED
The COMM LED blinks on whenever communications are sensed.
Altitude Correction
Altitude correction can be confi gured using Prism 2 software installed
on a computer. The altitude can be confi gured at a value of 0-15,000
feet. The default is 500 feet.
TB1 Terminal Block (CO
2
Reading)
The TB1 terminal block should only be used to test the sensor when the
sensor cable is plugged into the controller and the sensor and controller
are powered up. Directions: Set the meter for DC volts and connect
the GND probe to the GND terminal and the + probe to the CO
2
0-5
terminal. Look at the output voltage and record it. Multiply the voltage
times 400. The value should match the CO
2
as read on the System Man-
ager TS, Modular System Manager, Modular Service Tool, or Prism. If
the signal doesn’t match the sensor reading, call WattMaster Controls
for a replacement.
STATUS LED
COMM LED
ADDRESS SWITCH
MICR OCHI P
PIC 32M X440F
512H-80I /PT
Figure 4: Address Switch and Board LEDs
Figure 5: Wall Mounted E-BUS CO
2
Sensor’s Front
LED