Electrical Details Figure 1 24V DC Operation
Rear View Front View Cover Open TOC-625 Micro
Power Connection Detail
Note System can also be
powered via 3.5mm Jack
Plug Mounted on the PCB
when using IGD Supplied
PSU Part ID TOC-PSU
Electrical Power: 18-28V DC
Power Requirements For 8 Detectors and 2 Nodes From Above Table = 1.5A
Important Note:
If you are using a floating output DC supply that does not have a grounded output then with the case open
high voltages could be present. Power down equipment before opening the housing and ensure installation is
by a competent person.
External Mains PSU Via Fused Spur
Cable Order Codes
1M Male -Female Cable M16
3M Male - Female Cable M16
6M Male - Female Cable M16
+24V DC
0V DC
NC
NC
NC RL
1
RL
2
+Ve
Electrical Load: TOC-625 Micro Controller in Alarm State 0.3A @ 24 V DC
TOC-30 Series Addressable Gas Detector 0.1A @ 24 V DC
TOC-30 Series Relay Node Activated 0.2A @ 24 V DC
Detectors, Nodes and Beacon
Sounders Connect Together Using
Pre-Made Cable Assemblies.
These Can be Inter-Connected to
Make Longer Runs
T30-1M-CBL
T30-3M-CBL
T30-10M-CBL
There can be up to 8 Gas detectors on
the system, these can be any mix of gas
detector types on the highway. For
example Flammable Gas Detectors,
Carbon Monoxide, Oxygen etc. This
example shows 2
There can be up to 2 Addressable Relay
Nodes on a system. These provide 2
single pole relays and if fitted then when
the FIND function is run they will set up
to the table on page 1
Normally Open
Common
Normally Closed
Connections common to each of the
two relay outputs. Note relays are
normally energised for fail safe
operation in service. Diagram shows
de-energised state.
Relays are 4A Non Inductive @ 24V DC
-Ve
NOTE
Detectors and Nodes MUST have
unique addresses. These will be
indicated on the cover on the
detector or node. Detectors or Nodes
with duplicate addresses will not
function correctly
Field Device Connector
Comm
Comm
NO
NO
NC
NC
Relays Energised
Relays De-Energised
Relay Action
Page 2
International Gas Detectors
