DIGITIZE DGM-32/64, Installation And Maintenance Manual

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DGM INSTALLATION AND MAINTENANCE MANUAL
10 700135-0000 Rev. O
2.3.3 MOUNTING INSTRUCTIONS
The cabinet supplied with the standard model DGM is designed for surface
mounting. The mounting area must be a smooth, clean surface on a permanent
partition. The cabinet must be securely fastened to the mounting surface using the
four mounting holes. For this, #10 or 1/4" screws are suggested. The mounting
location should be planned to allow full access to the top, bottom and sides for ease
of conduit entry. When mounted, panel indicators and labels should be plainly
visible, and the cabinet door must be able to swing to the full open position.
Following these guidelines will facilitate ease in installation, operation and
maintenance.
Clean out any dirt produced during installation and reverse the procedure for
disassembly to reinstall electronics back into the enclosure.
2.4 WIRING
2.4.1 CONDUIT CONNECTIONS
Connect all wiring conduit to the cabinet in accordance with applicable National
Electric Code, State and Local building code requirements. The cabinet is supplied
with pre-stressed 1/2" knock-outs. Please note that the lower shelf of the cabinet is
used primarily for standby battery placement. If the bottom shelf must be used for
conduit entry, make sure the wiring does not interfere with battery installation.
2.4.2 FIELD WIRING
Pull all power feeds and field wiring through the conduit and into the cabinet. Never
place power feeds and field wiring in the same conduit. All field wiring must be
tested for grounds, induced voltages, open and shorted circuits. All field wiring must
be free of these conditions prior to connecting them to peripheral devices or to the
DGM. Do not connect field wiring until the DGM has been fully tested. Tag all wiring
for later connection to the unit. Please refer to
Section 3, SYSTEM INITIALIZATION.
Failure to comply with these guidelines may cause damage to the unit.
The zone inputs are designed to be connected to field wiring with a maximum
resistance of 750 Ohms. When a zone input is connected to field wiring longer than
20 feet, lightning protection must be provided. The 32 zone EOL interface provides
such protection. The panel must be properly grounded. Proper grounding is required
both for safety and proper operation of the lightning protection and ground fault
circuits.
2.5 MAIN BOARD
2.5.1 GENERAL
This is the main microcontroller board for the panel. It contains the firmware that
operates the panel.