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Introduction
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9
IM 837-2 • MICROTECH II CHILLER UNIT CONTROLLER
7. Insert the plug-in connector to the communication
module.
8.
Mount the plastic cover (provided in the field kit) on
the serial card slot. Slip the cover over the network
connector plug (
Figure 8
).
Figure 8: BACnet IP Communication Module Cover
9. During installation, use the scissors to separate the two
labels and apply one in an easily accessible position
near the unit controller or on the outside of the control
panel. This allows for quick reference to the MAC
Address at any point after installation.
10. Insert the BACnet network cable connector into the
communication module (
Figure 9
and
Figure 10
).
Replacing a Communication
Module
Follow these steps to remove an existing communication
module from unit controller and replace it with a new one.
1. Remove power from the unit controller.
2. Locate the serial card slot on the unit controller
(
Figure 5
).
3. Pull the network cable connector from the
communication module.
4. Remove the cover from the serial card slot. Use a small
screwdriver to carefully pry it off from one end (
Figure 3
and
Figure 4
).
5. Grasp the communication module, with the network
connector on the underside. The 8-pin header must
mate to the 8-pin plug in the unit controller. The plug has
a guide on each end to direct it into the mating guide
on the communication module header.
Figure 6
shows
the serial card slot with the 8-pin plug that mates to the
header on the communication module.
NOTE:
This operation relies more on fitting the
communication module into the connector than
seeing the connectors mate.
6. Insert the communication module, pointed up, into the
slot. Keeping it
level
, roll the module into position as you
guide it into the slot, feeling the connectors line up.
7. When you feel the connectors align, press the
communication module into the connector. Verify that
the communication module is firmly connected.
8. Replace the cover on the serial card slot. Slip the cover
over the network connector plug (
Figure 8
).
9. During installation, use the scissors to separate the two
labels and apply one in an easily accessible position
near the unit controller or on the outside of the control
panel. This allows for quick reference to the MAC
Address at any point after installation.
10. Insert the network cable connector into the
communication module (
Figure 9
and
Figure 10
).
Figure 9: Network Cable Routing and Connections
Figure 10: Network Connection Detail
RJ45
Connector
Network Cable
Содержание IM 837-2
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