SMS-TORK Endüstriyel Otomasyon Ürünleri San. Tic. Ltd. Şti.
14
The connection diagram below shows the connection of the GA21 gas alarm detector to the GAP30
gas alarm control panel, as an example.
5. Electrical Connections
5.1. Connection of GA21 gas alarm detector to GAP30 gas alarm control panel
• Power supply is connected to pins 1 and 2 of GAP30 gas alarm panel.
• Two GA21 gas alarm detectors are connected. The supply voltage of one of the GA21 gas alarm detectors
is taken from pins 11,12, and the signal cable is connected to pin 15. The supply voltage of the other GA21 gas
alarm detector is taken from pins 17,18, and the signal cable is connected to pin 25.
Figure 6: Connection of GA21 Gas Alarm
Detector to GAP30 gas alarm panel
GA21
GA21
+24V
GND
DEVICE SUPPLY
VOLTAGE
+V(12VDC)
+S(4-20mA Control Signal)
GND(DC)
L (PHASE)
N (NEUTRAL)
E (EARTHING)
+V(24V DC)
VALVE2
VALVE1
(L),(+V)
EXTERNAL VOLTAGE INPUT(max.5A)
(N),(GND)
E (EARTHING)
GAP30 GAS ALARM PANEL
SIREN RELAY2 RELAY1
SIREN
