MRBD - Relay Board

The MRBD relay board has six relays, which are controlled by RCO's from the exchange or from a RIO unit. The MRBD must be powered by +24 VDC. The AlphaCom XE7 and XE20 comes with a 24VDC outlet for such purpose, but in the AlphaCom XE26 a Power Distribution Board PDB is required.

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 MRBD 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.

Connection of MRBD in an AlphaCom XE7

Features

• Equipped with 6 dual change over relays and relay drivers
• Powered by +24 VDC
• 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

Technical Specifications

Text	Value
Order Number	1009970200
Input Voltage: Maximum Current: Current through relay contact:	+24 VDC 60 mA (all relays active simultaneously) 1A
Relays	6 relays each with 2 changeover contacts
RCOs<br\><br\><br\>	Active high or low<br\>(switch setting on the board)<br\>high = AlphaCom<br\>low = TouchLine Compact
Recommended room temperature<br\>(non-condensing)	0'C to + 35'C<br\>+32'F to + 95' F
Humidity Range:	10% - 90% RH
Dimensions:	100 mm x 100 mm<br\>3.9" x3.9"
Connector Types:	Spring terminals, AMP MTA 100 connector

Connectors and Switches

Connectors and switches on MRBD board

The jumpers S1-S6 determine if the RCO should be activated by a high or low level. High level is used in AlphaCom system, while low level was used in the previous TouchLine generation of intercom system.