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GTC-550
Instruction Manual
5. Installation
5. Installation
[Figure 5. 3-Wire type gas detector]
[Figure 6. 2-Wire type gas detector]
[Figure 4. CN5 Terminal Configuration]
5.3. Relay Terminal Configuration
■ Using CN5 terminal, it consists of 3 SPDT-type Alarm relay and 1 SPDT-type Trouble relay.
■ Alarm Lamp (LP) can connect DC external warning light.
■ LP terminal output DC +24V power regardless of AC, DC power mode. This is to use an external DC flash light or
external devices.
5.4. 3-wire Type Gas detector Connection Method
5.5. 2-wire type Gas detector Connection Method
■ When the gas detector has 3-wire (V+, mA, V-) for power and
420 mA output components, connect to the Channel Unit as
shown in Figure 5.
■ Connecting cable must comprise of CVVS or shield cable with
CVVSB 0.7 sq or higher.
■ Our gas detector models in this type are TS-1100Ex, TS-
2000Ex, TS-2100 Series, TS-4000 Series, TS-4100P Series,
TS-5100 Series, GTD-1000 Series, GTD-2000 Series, GTD-
3000 Series, GIR-3000 Series.
■ When the gas detector output has 2-wire (V+, V- ), connect
to the Channel Unit as shown in Figure 6.
■ Connecting cable must comprise of CVVS or shield cable with
CVVSB 0.7 sq or higher.
■ Our gas detector models in this type are TS-1100Tx, TS-
2000Tx, TS- 3000 Series, TS-3100 Series.
FUNCTION
PIN
TERMINAL NAME
DESCRIPTION
Alarm1
1
NO
Alarm1 Normal Open
2
NC
Alarm1 Normal Closed
3
COM
Alarm1 Common
Alarm2
4
NO
Alarm2 Normal Open
5
NC
Alarm2 Normal Closed
6
COM
Alarm2 Common
Alarm3
7
NO
Alarm3 Normal Open
8
NC
Alarm3 Normal Closed
9
COM
Alarm3 Common
Trouble
10
NO
Trouble Normal Open
11
NC
Trouble Normal Closed
12
COM
Trouble Common
LP
13
+
External Power (DC 24 V) + Output
14
-
External Power (DC 24 V) - Output
[Table 3. CN5 Terminal Description]
