Det-Tronics EQP Fire and Gas Detection/Releasing System - Manual (Page 53)

14.1 3-34 95-8533
8 CHANNEL DISCRETE INPUT/
OUTPUT (DCIO) MODULE
INSTALLATION
The following paragraphs describe how to properly
install and configure the 8 Channel DCIO Module.
MOUNTING
The DCIO must be properly installed in a suitable
enclosure that is rated for the location. The enclosure
must provide space to install and wire the DCIO
module and must also provide for ground wire
termination. Access into the enclosure is gained by
using a special tool to open the enclosure. The
enclosure should be rated for the temperature range
of the location plus the temperature rise of all
equipment installed inside the enclosure. The
enclosure must be rated for electrical equipment that
is going to be installed.
The DCIO can be panel or DIN rail mounted.
NOTE
It is recommended to maintain a minimum of 4
inches clearance between the module and other
equipment to provide adequate room for wiring
and ventilation.
WIRING
All electrical connections are made to the field wiring
connectors furnished with the module. See Figure
3-38 for terminal identification.
Power Connector, Terminals 1 to 6
24 vdc Power Input
Power connections to the DCIO depend upon the total
current consumption of all the channels in the device.
Each output-configured channel can consume up to 2
amperes. Total output current should be limited to 10
amperes. Connect the power supply to terminals 1
and 2 or to terminals 4 and 5. Power wire shielding
should be connected to terminals 3 and 6.
1 — +
2 — –
3 — Shield*
4 — +
5 — –
6 — Shield*
*Shields on power wires are optional unless required
by local codes.
Connect the module power supply to terminals 1 and
2. If additional terminals are required for powering
other devices, these devices should be connected to
terminals 4 and 5. Shields are to be connected to
terminals 3 and 6.
COM Connector, Terminals 1 to 6
LON Terminals
Be sure to observe polarity when wiring the LON.
1 — "A" side of signaling circuit for COM 1
2 — "B" side of signaling circuit for COM 1
4 — "A" side of signaling circuit for COM 2
5 — "B" side of signaling circuit for COM 2
3 & 6 — shield connections.