12
VCCX2 Controller Technical Guide
PART NO.
PART DESCRIPTION
ILLUSTRATION
PAGE NO.
ASM01698
VCCX2 Controller
The VCCX2 Controller provides eight analog inputs, four analog outputs, eight
binary inputs, and eight relay outputs. It also has an on-board BACnet
®
port
for connection to an MS/TP network. The Controller contains a 2 x 8 LCD
character display and four buttons that allow for status and alarm display as well
as BACnet
®
configuration. It allows for the addition of the Refrigerant System
Modules (RSMs), EM1 Expansion Module, and the 12 Relay E-BUS Expansion
Module described below.
NOTE:
Set-up, configuring, and monitoring of the VCCX2 Controller requires
one of the following communication interfaces—Prism 2 Front-End Software
used with a personal computer, Modular System Manager SD, or Modular
Service Tool SD.
Pages
25, 26
ASM01686
Refrigerant System Module for VFD Compressors
The Refrigerant System Module for VFD Compressors (RSMV) monitors and
controls one tandem compressor refrigeration circuit of the HVAC unit. The
module is designed for R410-A refrigerant. Up to four RSMV’s can be connected,
depending on the size of the system. There are two E-BUS Expansion Ports
which allow for the use of communicating sensors and the E-BUS Modules. The
RSMV provides four analog inputs, three binary inputs, three relays, and four
analog outputs. It connects with an E-BUS cable to the VCCX2 Controller.
Pages
21, 51-52
ASM01693
Refrigerant System Module for VFD Heat Pumps
The Refrigerant System Module for VFD Heat Pumps (RSMV-HP) monitors and
controls one refrigeration circuit of the HVAC unit. The module is designed for
R410-A refrigerant. The RSMV-HP is connected to the VCCX2 Controller. Up
to four RSMV-HP’s can be connected, depending on the size of the system.
There are two E-BUS Expansion Ports which allow for the use of communicating
sensors and the E-BUS Modules. The RSMV-HP provides six analog inputs, four
binary inputs, four relays, and two analog outputs. It connects with an E-BUS
cable to the VCCX2 Controller.
Pages
21, 53-54
ASM02201
Refrigerant System Module for Digital Compressors
The Refrigerant System Module for Digital Compressors (RSMD) monitors
and controls one or two refrigeration circuits of the HVAC unit. The module
is designed for R410-A refrigerant. Up to four RSMD’s can be connected,
depending on the size of the system. There are two E-BUS Expansion Ports
which allow for the use of communicating sensors and the E-BUS Modules.
The RSMD provides three analog inputs, four binary inputs, five relays, and two
analog outputs. It connects with an E-BUS cable to the VCCX2 Controller.
Pages
21, 55-56
ASM02351
Refrigerant System Module for RNZ
The Refrigerant System Module for RNZ (RSMZ) monitors and controls one
refrigeration circuit of the HVAC unit. The module is designed for R410-A
refrigerant. Either three or six RSMZ modules can be connected, depending on
the size of the system. There are two E-BUS Expansion Ports which allow for
the use of communicating sensors and the E-BUS Modules. It connects with an
E-BUS cable to the VCCX2 Controller.
Pages
21, 57-58
ASM02350
Subcool Monitor Module
The Subcool Monitor Module reads the liquid line pressure and then converts
it to saturated liquid temperature and compares it to the measured liquid line
temperature to calculate subcooling. The Subcool Monitor Module is used
in conjunction with the RSMZ Module. One or two Subcool Monitors can be
connected, depending on the size of the system:
•
One is used when three RSMZ’s are used
•
Two are used when six RSMZ’s are used.
It connects with an E-BUS cable to the VCCX2 Controller.
Page 59
OVERVIEW
Parts and Descriptions