Mitsubishi Electric Procon MOD-IP/50 Installation And User Manual page 4

2.3 Enable Link
Allows a normally-closed volt-free contact to set or reset the 'Forced-
Off' feature in the G-50. While the 'Forced-Off' feature is enabled, all
air-conditioning units are switched off and all remote-controllers are
disabled.
Upon detection of the open contact, the Procon unit sends the
'Forced-Off' Set command to the G-50, and resends at 5 seconds
intervals while the contact is open.
As soon as the contact closes, the Procon unit sends the 'Forced-Off'
Reset command to the G-50 once only. This ensures that any
subsequent 'Forced-Off' commands sent via the Modbus BMS
system are not overridden.
Note: The Procon MOD-IP/50 comes supplied with a wire
link across the Enable Link terminals.
2.4 Power Supply
The Procon MOD-IP/50 will accept either 12v or 24v AC and has a
consumption of 8VA. The unit is shipped setup for 24v AC. The
internal fuse is rated T500mA.
THIS EQUIPMENT MUST BE EARTHED
Changing The Supply Voltage
Shorting
Links
Fuse
24v AC
Disconnect the supply and remove the top cover. Fit the 2 shorting
links and the fuse in the appropriate positions detailed above.
5
12v AC
3. Air-Conditioning Group Configuration
G-50
M-NET
IC
IC IC
01 02 03
* *
Group
Group
01
Fig.4 Grouping Example
The groupings set up in the G-50 determine which unit addresses
can accept commands from the BACnet BMS system. The group
number is defined as 'the lowest indoor unit address within the
group'. This then becomes the 'master' address for the group, and is
the only address within that group than can accept commands.
The other units within a group can be classed as 'slave' units and
contain the same status parameter values as the 'master', apart from
the Error Code, which is unique to each unit.
In the example above, addresses 01, 03, 06 and 08 are the
'master' units, and 02, 04, 05 and 07 are the 'slave' units.
Note: Attempting to write a command to a 'slave' unit will have no
effect.
IC IC IC IC IC
04 05 06 07 08
* *
Group Group
03 06 08
6