Carrier ChillerVu - To Wire the Expander for Power; To Attach Expanders

Installing an MPC Open XPIO expander
Carrier® ChillerVu™
(OPN-PSM-MPCXPE) Carrier Proprietary and Confidential CARRIER CORPORATION ©2017
Installation and Start-up Guide 14 All rights reserved
To wire the expander for power
CAUTIONS
• The expanders are powered by a Class 2 power source. Take appropriate isolation measures when mounting
it in a control panel where non-Class 2 circuits are present.
• For the Carrier® ChillerVu™ to recognize an attached expander, you must turn on the expander before you
turn on the controller.
1 Verify that the expander's power switch is in the
Off
position.
2 Connect the 24 Vac power source to the
24 Vac/26 Vdc
and
Return
terminals, being sure to maintain proper
polarity if power is being shared.
3 Turn on the expander's power switch.
4 Verify that the expander's
Power
LED is on and the
Run
LED is blinking.
To attach expanders
Do not exceed 100 feet total wire length.
1 Wire the controller's
Xnet Remote Expansion
port to the same port on the expander.
Connect:
○ Gnd to Gnd
○ Xnet- to Xnet-
○ Xnet+ to Xnet+
NOTE
To use more than one expander, wire their
Xnet Remote Expansion
ports together in a daisy-chain
configuration. The Carrier® ChillerVu™ must be the first device on the expander network.
2 You must set the Xnet baud rate to 500 kbps in the i-Vu® interface on the driver's
Xnet
page. See To set up
the driver.
3 If the expander network has more than one expander, place the
Term
jumper in the down position or remove
it from all expanders except the one at the end of the expander network. The
Term
jumper must be in the up
position on the expander at the end of the network.