Rockwell Automation 20-COMM-B BACnet MS/TP Adapter - Manual (Page 26)

2-10 Installing the Adapter
Configuring/Verifying Key Drive Parameters
The PowerFlex 7-Class drive can be separately configured for the control
and reference functions in various combinations. For example, you
could set the drive to have its control come from a peripheral or terminal
block with the reference coming from the BACnet MS/TP network. Or
you could set the drive to have its control come from the BACnet MS/TP
network with the reference coming from another peripheral or terminal
block. Or you could set the drive to have both its control and reference
come from the BACnet MS/TP network.
The following steps in this section assume that the drive will receive the
Logic Command and Reference from the BACnet MS/TP network.
1. Using drive Parameter 090 - [Speed Ref A Sel], set the drive speed
Reference to “22” (DPI Port 5).
2. Verify that drive Parameter 213 - [Speed Ref Source] is reporting
that the source of the Reference to the drive is “22” (DPI Port 5).
This ensures that any Reference commanded from the network can
be monitored by using drive Parameter 002 - [Commanded
Speed]. If a problem occurs, this verification step provides the
diagnostic capability to determine whether the drive/adapter or the
network is the cause.
1. Remove power from the drive.
2. Use static control precautions, and remove or open the drive cover.
3. Connect a shielded, twisted wire pair to the network, and route it
through the bottom of the drive (see Figure 2.6 ).
4. Connect the twisted wire pair and its shield to the 3-pin linear plug
(provided with the adapter). See Figure 2.8 for terminal designations
and typical terminal connections.
Connecting the Drive/Adapter to the Network
!
ATTENTION: Risk of injury or death exists. The PowerFlex drive
may contain high voltages that can cause injury or death. Remove
power from the drive, and then verify power has been removed before
installing or removing an adapter.