MRBD - Relay Board
From Zenitel Wiki
Features
- Equipped with 6 dual change over relays and relay drivers
- Runs on +24 V supplied from the Power Distribution Board PDB.
- Accepts RCOs with high- or low-level switch setting on the board
- Connector for 6 RCOs + 2 GND reference signals
- Connects to the AlphaCom Subscriber Connection Board through a 1:1 cable
- Fastens onto mounting rail in AlphaCom exchange
Description
The schematics for the boards are in Chapter 23 from page 273 onwards.
The AlphaCom relay board runs on +24 VDC that is provided from the exchange power supply via the Power Distribution Board.
The RCOs can be activated by a high or low level. This is determined by switch setting on the board. High level is used in AlphaCom installations, while low level is used in TouchLine Compact installations.
In the AlphaCom exchange it is recommended that all the RCOs be connected to the same ASLT board(s) in order to simplify cabling.
The Multi-Relay board is supplied in an installation box that can be fastened onto the mounting rail on the connection field of the AlphaCom exchange, or mounted on the wall in any suitable position.
In the TouchLine Compact exchanges, a mounting rail must be fastened to a standard mounting bracket.
