IM 730-0
9
Installation
The MicroTech II N2 Open communication module may either be installed in the factory or field
installed. The module mounts on connector pins and is held in place with three plastic locking
standoffs. The N2 Open network connects to the MicroTech II N2 Open communication module at
the network connector plug (SG1).
The MicroTech II N2 Open communication module is included in a kit
(part number
107293125
).
You need to know the N2 address that is assigned to the communication module. The network
administrator can supply this information.
To mount a new MicroTech II N2 communication module onto the Unit
Controller board, follow these steps:
1.
Disconnect power from the Unit Controller board.
2.
Unplug the unwired network cable connector from the terminal block SG1 (see Figure 2).
3.
Install the three standoffs on the Unit Controller board at the locations shown in Figure 7 Simply
press the locking standoffs into the holes on the board. Then locate the empty connector for the
MicroTech II N2 communication module on the Unit Controller board (see Figure 8).
4.
Orient the communication module printed-circuit board so that the component side faces
outward and the connector pins can penetrate the 12-pin header on the communication module.
5.
Push the communication module onto the connector pins and standoffs until you hear the faint
click of the locking standoffs securing the board in place.
6.
C
o
nnect the network wiring to the network cable connector and plug it into the terminal block,
SG1, on the MicroTech II communication module (see Figure 9).
7.
Set the N2 address (supplied by the network administrator) using the Address Switch (SW1).
The valid range is 1 to 253 (see Figure 4).
8.
Reapply power to the MicroTech II Unit Controller board.
Note:
You must maintain the polarity of the signal throughout the network. Always c to
+ and – to –. Also, the network cable shield or third-wire connection must be continuous
throughout the network and must be connected to earth ground at
one
(and only one) point.
