Installation manual

5
Maximum configuration
MLR2-DG INSTALLATION
System power supply rated 12VDC. Connect the positive
lead from the DC supply to the BLGT terminal; connect
the negative lead from the DC supply to the GND terminal.
CAUTION: Connecting a positive (+) terminal to aCAUTION: Connecting a positive (+) terminal to a
CAUTION: Connecting a positive (+) terminal to aCAUTION: Connecting a positive (+) terminal to a
CAUTION: Connecting a positive (+) terminal to a
negative (-) terminal may cause a fire and possiblynegative (-) terminal may cause a fire and possibly
negative (-) terminal may cause a fire and possiblynegative (-) terminal may cause a fire and possibly
negative (-) terminal may cause a fire and possibly
serious personal harm.serious personal harm.
serious personal harm.serious personal harm.
serious personal harm.
• For 24 hour stand-by, 12V 17.5Ah rechargeable battery
should be used for 6 lines configuration, and 12V 38Ah
rechargeable battery should be used for 14 lines
configuration.
Battery Charging Current
The maximum battery charging current is factory set at 1A.
Removing and Installing System
Components
Note that the receiver does not have to be powered down
when components are removed or installed.
To Remove the CPM2 Module:
The CPM2 charges the battery and provides for low battery
voltage disconnect. Removing the CPM2 module will
disconnect the battery and shut down the entire system if
AC power is not available. If the CPM2 must be removed
during an AC power failure, first connect a temporary battery
(protected with a 5A fuse and reasonably charged) to the
+BATT and GND terminals of the DML2A before removing
the CPM2.
Remove the 4 retaining screws on the front panel of the
module. Slowly pull the module out of the metal cabinet.
After the CPM2 is replaced, remove the temporary battery
so that the CPM2 can properly maintain the main battery.
To Remove a Line Card Module
Remove the 4 retaining screws from the front panel of the
module. Slowly pull the module out of the metal cabinet.
To Install a Line Card Module
Adding a Line Card Module to the MLR2-DG requires the
addition of an MLRX Expansion Card Cage. Each MLRX
can hold two DRL2A modules. The MLRX is shipped with
power and communications bus cables.
Installation Checklist
CompleteComplete
CompleteComplete
Complete
OperationOperation
OperationOperation
Operation
MLR2-DG installed in 19" Rack Mount
Cabinet
19" Rack Mount Cabinet connected to earth
ground
SG-1220B Printer Power Supply installed
(with transformer and battery) if DP8340
printer is used
6-pin modular cable(s) connected to MLR2-
DG and telephone line
Parallel Printer Cable connected to MLR2-DG
Parallel Printer Port
Parallel Printer power connected
Computer connected to MLR2-DG COM1 port
using serial cable
CPM2 Cold Start-up completed