12
VCCX2 Controller Technical Guide
PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.
ASM01698 VCCX2 Controller
The VCCX2 Controller provides 8 analog inputs, 4 analog outputs, 8 binary
inputs, and 8 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 4 buttons that allow for status and alarm display as well as BACnet
®
conguration. 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, conguring, 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
16, 22-23
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 4 RSMV’s can be connected,
depending on the size of the system. There are 2 E-BUS Expansion Ports which
allow for the use of communicating sensors and the E-BUS Modules. The RSMV
provides 4 analog inputs, 3 binary inputs, 3 relays, and 4 analog outputs. It
connects with an EBC 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
4 RSMV-HP’s can be connected, depending on the size of the system. There are
2 E-BUS Expansion Ports which allow for the use of communicating sensors and
the E-BUS Modules. The RSMV-HP provides 6 analog inputs, 4 binary inputs,
4 relays, and 2 analog outputs. It connects with an EBC 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 4 RSMD’s can be connected, depending
on the size of the system. There are 2 E-BUS Expansion Ports which allow for
the use of communicating sensors and the E-BUS Modules. The RSMD provides
3 analog inputs, 4 binary inputs, 5 relays, and 2 analog outputs. It connects with
an EBC 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 3 or 6 RSMZ Modules can be connected, depending on the
size of the system. There are 2 E-BUS Expansion Ports which allow for the use
of communicating sensors and the E-BUS Modules. It connects with an EBC
E-BUS cable to the VCCX2 Controller.
Pages
17, 57-58
ASM02350 Subcool Monitor Controller
The Subcool Monitor Controller 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 Controller is used
in conjunction with the RSMZ Module. One or two Subcool Monitors can be
connected, depending on the size of the system—(1) is used when 3 RSMZ’s
are used and (2) are used when 6 RSMZ’s are used. It connects with an EBC
E-BUS cable to the VCCX2 Controller.
Page 59
OVERVIEW
Parts and Descriptions