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Module Electrical and Control Panel
Each module has its own electrical and control panel that
distributes electricity to individual components. It also has
Figure 6. Module electrical and control panel
Electronic Control
The Modular heat pump models use Carel c.pCO series
microprocessor controllers to monitor and report critical
operating parameters. See
controller is used to control and coordinate the functioning
of all the secondary modules that make up the heat pump
system. Each secondary module has its own controller.
There are five BMS communication options:
Note: BMS is not included as standard, but available as an
option.
1. BACnet® MS/TP - Connection through built-in BMS2
port.
2. BACnet IP - BACnet router is used.
3. Modbus® RTU - Connection through built-in BMS2
port.
ARTC-SVX006A-EN
Figure 8, p.
22. A primary
fuses and breakers, compressor switches, and the
microprocessor controller. See the following figure.
4. Modbus IP - Modbus router is used.
5. LonWorks® - LonWorks router is used.
Controllers
The distributed microprocessor control system enables all
secondary modules to operate independently in the event
that the primary microprocessor controller fails. All heat
pump safeties including temperature set point, refrigerant
pressures, and freeze protection are preserved. The
distributed microprocessor control programming only lacks
the ability to communicate with the BMS as well as rotate
the lead compressors which typically occurs every 168
compressor operating hours.
In a normal configuration, a secondary controller controls
the single module to which it is dedicated.
The secondary controller monitors key performance
parameters for its module and sends real-time information
Operating Procedures
21
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