12
Tocsin 650/750 Addressable I/O Card Input Ports
4-20mA Signal
24V DC
4-20mA Signal
24V DC
0V DC
Loop Powered Detectors
3 Wire Detectors
Temperature
Typical IGD Loop Powered
4-20mA Detectors
Pressure
CO
H2S
Oxygen
HCN
NO2
H2
CL
HCL
NO
SiH4
O3
Typical IGD Loop Powered
4-20mA Detectors
Infra Red Based Detectors
PID Based Detectors
Pellistors Based Detectors
Thermal Conductivity
Relay cards also have analogue and digital inputs that can be used to read data onto the system
from external devices. Setup of the inputs, type, range, addressing etc is controlled via IGD’s
Android Apps. Wiring options are indicated below. Note the differences between Version 1 and 2
PCB assemblies.
Note 1
Note 2
Note 2
Note 1
Note 3
These Ports are not used on version 1 PCB assemblies limiting the PCB to a maximum of 6
analogue inputs or 8 digital inputs including ports 9 and 10.
If extended 4-20mA devices are connected, they maybe floating ground type.
These Ports are designated to be digital inputs only.
10
9
8
7
6
5
4
3
2
1
