Innotech Device Network Cabling - Manual (Page 33)

Innotech Device Network Cabling Installation Instructions
© Mass Electronics Pty Ltd 2007 Chapter 3 – Sub Network Devices Page 33
3-2.1 VAVMax (VM01) and MicroMAX (UM01)
The VAVMax and MicroMAX have a 5 way connector where the terminals are made up of P+ P- C+ C-
SHLD. This is due to the fact that the Sub System Network Commissioning Tool (CT01) is powered by
the P+ and P- terminals. These terminals have different pin spacing to the primary network terminals
and while they look similar, they are not, and can’t be interchanged.
3-2.2 MiniMAX (MM02)
These MiniMAX controllers have the REM style of comms connector.
When used in conjunction with VAVMax or MicroMAX controllers, care should be taken to ensure only
the S1 terminal is used to maintain the continuity of the screen.
3-3 IR11 Single Channel Repeater
For information regarding the conditions when a repeater should be added to a Sub Network please refer to
Chapter 4 of this manual.
NOTE
Hazardous Voltage between Earth-Connections
When the Digital Controllers are supplied and earthed from two different switchboards, a hazardous situation
can be created. One earth connection is at the local switchboard and the second earth connection is by way of the
screen of the Comms cable. In the event of a fault, there could be full supply voltage difference between the two
earth connections. Always measure the voltage between Port 1 & 2 screens before handling. Use appropriate safety
precautions.
CAUTION
The IR11 single channel repeater has the REM style connectors.
When used in conjunction with VAVMax or MicroMAX controllers, care should be taken to ensure only
the S1 terminal is used to maintain the continuity of the screen.
3-4 Network with VAVMax, MiniMAX and MicroMAX devices
The figure above indicates that the screen is to be continuous for the entire network run. Devices with
the S1 and S2 screen terminals use only the S1 terminal.

Figure 3-6: Sub System Network Connections
IR11
S1 - S2 +
UM01
P+ + - P- S
MM02
S1 - S2 +
VM01
P+ + - P- S