14
Rack System Installation
Location and Power Guidelines
Follow the guidelines in the Wiring and Setup section of this manual when choosing a location for the rack.
When choosing a location, consider that if the rear panel of the rack is not accessible, there must be enough space
to move the rack to gain access. Also provide enough cable slack so that station wiring does not interfere with the
ability to move the rack.
Knockouts are provided in the rack to admit station cabling. Support all cables to prevent sagging or strain.
Power Supplies
The rack system uses the MC512B and MC2626B power supplies. These supplies, and the API audio program
interface, are mounted to the MCRMP panel which is itself mounted to the rack. For systems with more than
120 stations, a second MC2626B power supply must be mounted.
The MC512B and MC2626B power cords are plugged into a surge suppressor/power strip.
Auxiliary equipment (power amplifier, Multi-Graphic equipment, etc.) may be plugged into the ACFDS. The ACFDS,
and any auxiliary equipment not plugged directly into the ACFDS, must be plugged into a properly grounded three-
wire outlet or connected directly to AC by a qualified electrician.
Relay Modules & Ribbon Cable
The MCRM relay module is used only in the rack-mounted system. The module contains (24 each) program and
intercom relays and 24 sets of terminals (4 pins per set) for connection with Multicom 2000 station wiring.
Relay modules are mounted to the MCRRP rack panel, or to SBA-series switchbanks when used with Multi-Graphic
equipment. One relay module is required for each analog/station card pair installed.
Each analog/station card pair connects to the corresponding relay module via the card frame back plane “J” connectors,
using two ribbon cables (model MCRCA ribbon cable assembly). Connect one end of a cable to the analog card “J”
connector (on the back plane) and the other end to connector J26 on the relay module. Connect one end of the other
cable to the station card “J” connector (on the back plane) and the other end to connector J25 on the relay module.
The relay module can handle a maximum of 250 watts of power (or 10 watts per station); connection for a booster
amplifier is provided at RCA 1 & J39. J41 & J42 connect to the back plane of the MCRMF with MCRCA ribbon
cable assemblies. The module also has connectors to interface with an SBA-Series switchbank, emergency contacts
from the MCP35A Master Control Panel, and auxiliary call-in switches. An accessory connector (J40) provides relay
driver capability whenever a station relay goes active (refer to Figure 13 and notes). Station numbers are assigned
to the MCRRP relay card in ascending order from the right to left, skipping the “V” pin (see Note 4).
To Next Page
Loading...
General