SL-014 v1.6 Page14
Document Ref: SL-014 v1.6
Tocsin Series Addressable I/O Card Input Ports
4-20mA Signal
24V DC
0V DC
4-20mA Signal
24V DC
Loop Powered Detectors
3 Wire Detectors
Typical IGD Loop Powered
4-20mA Detectors
Temperature
Pressure
CO
H2S
Oxygen
HCN
HCL
NO
NO2
H2
CL
SiH4
O3
Typical IGD Loop Powered
4-20mA Detectors
Pellistors Based Detectors
Infra Red Based Detectors
PID 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 1
Note 2
Note 3
These Ports are designated to be digital inputs only.
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.
10
9
8
7
6
5
4
3
2
1
