11
6.5 The select of sensor and signal source
6.5.1 local detector (diffusion type combustible detector)
1) You may release the lock screw of detector and pull out an instrument from the case carefully.
2) After you off the power, you may connect the connector between a detector and a terminal.
3) You may select the input select jumper on a back lower of connector to the connecting point
of combustible gas sensor (refer to Fig. 4.4)
4) You may recombine connector between instrument and terminal
Notice 1) You may not connect wrong position of connector when you recombine.
2) Do not combine indicator to connector of common alarm unit.
(You may put a common alarm unit on the very left side of instrument array due to
distinguish the position of alarm unit)
5) You may connect a sensor to the terminal of instrument (in case of Non-transmitter type)
⊙
sensor operation power + (red)
: connect to terminal #3
⊙
sensor operation power – (black)
: connect to terminal #4
⊙
sensor (white)
: connect to terminal #5
⊙
sensor signal – (green)
: connect to terminal #6
6) When you extend a lead wire of sensor, you may use the wire with color or put the right tag in
order not to confuse a wire.
The permitted maximum length of line from a sensor to a detector depends on cross section
Jumper
State Case
SHORT Sensor
type
Pattern
OPEN 4-20
mA
Transmitter type
SHORT 4-20
mA
Transmitter type
JP 6
OPEN Detector
Sensor type
2-3, 2-3
SHORT
4~20 mA
Transmitter type
JP 10
1-2, 1-2
SHORT
Detector
Sensor type
1
1
2
2
3
3
1
2
1
2
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