Oldham SharpEye NP40IGB, Руководство пользователя, Страница: 20 / 50

21
Table 12: Results of a Successful Manual BIT
Output Result
FAULT relay
•
Wiring options 1, 2, and 4: remains CLOSED (Normal)
•
Wiring options 3 and 5: remains OPEN (Normal)
ALARM relay Activated for 3 sec (only when the function Alarm BIT is set to YES)
AUXILIARY
relay For wiring options 4 and 5: is activated for 3 sec (only when the
function
Auxiliary BIT is set to YES )
0-20mA output Wiring option 1, 2, 3:
•
Initiates 15 mA only when the function Alarm BIT is set to
YES
•
Initiates 10 mA when the function Auxiliary BIT is set to YES
and the function Alarm
BIT is set to NO
POWER LED Green, Flashing, 1 Hz
Table 13: Results of an Unsuccessful Manual BIT
Output Result
FAULT relay
•
Wiring option 1, 2, 4: changes to OPEN
•
Wiring option 3 and 5:changes to CLOSED
0-20mA output Wiring option 1, 2, 3: Indicates BIT FAULT (2mA)
POWER LED
Yellow, Flashing, 4 Hz
1.6.2.4 Manual BIT only selected
The BIT is initiated manually by momentarily connecting Terminal Number 3 with
Terminal Number 2 or a switch across these terminals in the safe area.
2
INSTALLING THE DETECTOR
This chapter provides basic guidelines for installing the detector. It does not attempt to
cover all of the standard practices and codes of installation. Rather, it emphasizes specific
points of consideration and provides some general rules for qualified personnel. Wherever
applicable, special safety precautions are stressed.
2.1 General Guidelines
To ensure optimal performance and an efficient installation, consider the following
guidelines:
•
Sensitivity : To determine the level of sensitivity, consider the following:
•
Size of fire at the required distance to be detected
•
Type of flammable materials
•
Spacing and Location : The number of detectors and their locations in the protected
area are determined by:
•
Size of the protected area
•
Sensitivity of the detectors
•
Obstructed lines of sight
•
Cone of view of the detectors