Detcon 400FB - Manual (Page 3)

Detcon Model 1/2/400FB Gas Detection System PG.3
SENSOR #1
A C
B
DC POWER IN
A = +12 VDC
B = DC COMMON
SENSORS
A = +12 VDC
B = DC COMMON
C = MA SIGNAL
FIG. 1 BOTTOM VIEW
A B
A C
B
A C
B
A C
B
SENSOR #2
SENSOR #3 SENSOR #4
OPTIONAL 117VAC
A = L1
B = L2
C = GROUND
A C
B
01.
02.
03.
04.
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1.9 INSTALATION
Securely mount the enclosure in accordance with figure #2.
Connect the 12 VDC (or optional 117 VAC) to the lug-type terminal strip as shown in figure
#3 (Refer to figure 1 if you are using the optional quick-connect plugs). Be sure to observe
correct polarity as failure to do so may result in circuit damage on power up.
Connect any alarms as neccessary to the lug-type terminal strip (Form C dry contacts)
located on the base plate as shown in figure 3. If you are using the strobe and siren option
this step is unneccessary because they are pre-wired.
Connect the Sensors to the Connector plugs located on the back of the controller circut
board (+, – and milliamp) as shown in figure 4. If you are using the optional quick-connect
plugs, wire up the sensor(s) as shown in figure 1. Refer to installation and wiring detail of
remote mount sensor assemblies as detailed in section 3.0.
CAUTION: The sensor connector plugs, located on the back of the controller circuit board,
have a wire attached to them that goes to the rotary switch (200FB & 400FB). This wire must
remain in the same connector position so if you pull the connector off be sure to note which
channel it came off of. Failure to put the connector back in the same place will result in the
LCD display giving a reading of a different channel than is actually being monitored. If the
wires are out of order just note that the wire going to pin one of the rotary switch goes to W1
on the connector for channel 1 and so on.
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1.7 117VAC POWER SUPPLY OPTION
An optional 117VAC power supply is mounted on the base plate behind the control panel.
Monitors that come with the power supply option are pre-wired and 117VAC is applied to the
system via a lug-type terminal strip located on the base plate. Use the first three terminals labeled
L1 (Hot), L2 (Neutral) and Ground. The power supply output to the system is 12VDC. If the
quick-connect option is used, the 117VAC will be wired into the quick-connector as indicated in
latter text.
❏
1.8 QUICK CONNECT OPTIONS
If equipped, the optional quick-connect plugs will be mounted on the bottom of the enclosure and
provide for entry of 12VDC (2 pin) or 117VAC (3 pin) as well as sensor connectors (3 pin) as
indicated in the illustration below. The quick connect plugs come pre-wirred internally.