IGD 2-Wire Systems, Installer'S Manual

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Module PCB Features
The following diagram indicates features available on the TOC-750 ‘module’ PCB. Please note
that failure to observe and make correct connections or exceed ratings may result in damage to
the PCB.
Ribbon Cable Connection For TOC-750
Annunciator Display and Options
Local LED
Indications
And Up/Down
Interface Buttons
Pellistor (Catalytic)
Flammable Gas
Detector Interface
Suitable for IGD
Types MK3, MK6, MK7
2-Wire Highway
Connection
To Next Device
Multi-Function I/O Port 1
Solid State Output or
4-20mA Input or
TOC-10 IP or Gas Meter Multi-Function I/O Port 2
Solid State Output or
4-20mA Input or
TOC-10 IP or Gas Meter
Connection Point For
IGD Infra-Red, Toxic, PID
or Oxygen Gas Detectors
2-Wire Highway
Connection
To Next Device
SPCO Relay
Output
DVM Test Point +
DVM Test Point -
Sealing
Environment
Temperature
Voltage
Communication
Relay
Housing
Digital Output
Digital Input
Pellistor Port
Sounder
Display
Comm Port 3
6
2
1
5
4
7
0-55 Deg C
IGD 2-Wire Highway Operating IGD S Protocol
85dB (Option for TOC-750 Annunciators)
Supports IGD Infra-Red, PID, Toxic and Oxygen Gas Detectors
Not Polarity Dependant
0 -95% RH Non Condensing
12-28V DC
Suitable for use with TOC-10 Link Function
5A Non Inductive Loads 230V AC
TOC-750 Series ABS or Copper Free Aluminium For ATEX Versions
IP65 (using suitable glanding) for TOC-750, IP68 for ATEX Versions
Option to Interface to MK3, MK6 or MK7 Pellistors
24V DC 100mA Combined For Both Outputs Typically for LED Beacon Sounders
2 x 8 Programmable LCD with RGB Backlight (Option for TOC-750 Annunciators)
Module PCB Basic Interface Specifications
2
7
5
6
3 3
1
1
I/O Connection Port Selection Options
4-20mA Input 24V Powered From PCB
4-20mA Input 0V Powered Externally
Voltage Input 0V 0-3V DC Analogue
Digital Input 24V as contact closure
Digital Input 0V External Logic Input
SSR Output (SW+) Sw DC 24V Output
SSR Output (SW-) Switched - DC 24V Output
SSR Dual For Beacon Sounder Operation
P Y
W
4