Azbil AUR450C - Flame Detector (AUD300 C;500 C) Wiring; Verifying Flame Detector Connection

2-7
Chapter 2. MOUNTING AND WIRING
 Connection to the Model AUD300C/500C
Wire the AUD300C/500C as shown below.
AUR450C
• • • • •
1 2 7 8
Blue (F)
AUD300C/500C
Yellow (G)
White
White
Handling Precautions
•
The signal wires of the AUD300C/500C (blue and yellow) have specific polari-
ties. Connect the blue wire to terminal 1 (F) of the device and the yellow wire
to terminal 2 (G).
Reversing the signal wires may cause the tube unit to break or malfunction.
•
To extend the wiring, use 2 mm
2
600 V-vinyl insulated IV cable with a length of
200 m or less.
 Checking the connection between the controller and the Model AUD300C/500C
Required equipment: Tester
Input impedance: 100 kΩ min.
To check if the connection to the controller is correct, remove the tube unit of the
AUD300C/500C and measure the DC voltage between terminals F and G with the
tester as shown below.
Connect the + tester probe (red) to terminal G (yellow lead wire) and the – tester
probe (black) to terminal F (blue lead wire).
If the reading is between 160 and 220 V DC, the leads are connected correctly.
If there is a minus reading for the DC voltage, the leads to terminals F and G are
reversed.
Terminal tester probe Voltage
F - (black) 160 to 220 V DC
G + (red)
+ tester probe (red)
- tester probe (black)
Terminal F
(blue lead wire)
Terminal G
(yellow lead wire)