Carrier 30AWH004HB User Manual

56
30AW
Control management
5
5.1 Introduction
5.2 Unit Control
USER INTERFACES
GMC CONTROL
INVERTER CONTROLLER
Users can select the desired operating
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Control is based on the GMC platform developed by Carrier. For the
30AWH AquaSnap PLUS inverter chiller / heat pump a new GMC board
has been developed as well as new algorithms have been implemented.
The GMC control elaborates the request from the user interface and
translates it into a message for the chiller unit control. It continuously
analyzes the water, indoor ambient conditions and the customer
requests sending updated signals to the chiller unit control.
The chiller unit control takes care of the system reliability and satises
The main ow of logic in this control is as follows: The control reads
in inputs from discrete inputs, analog inputs, communications. These
inputs are then processed by mode control. After the mode control
comes the protections that protect the unit from damage. After the
protections, the outputs are energized or de-energized. Then the loop
repeats itself.
High voltage communications is used to communicate from the GMC
the requests coming from Inverter control tuning chiller unit fan, PMV,
compressor.
The chiller unit control continuously sends back signals to the Inverter
control.
board to inverter control.
Maximum values are maximum compressor frequency allowed unless
limited by a protection or message received from the User Interface.
The User Interface can limit the maximum compressor frequency from
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A2W
Size
Inverter
Capacity
(kW)
GMC Control
returned to Inverter
(HP)
Minimum
Cooling
(Hz)
Maximum
Cooling
(Hz)
Minimum
Heating
(Hz)
Maximum
Heating
(Hz)
4 4 1,25 20 90 20 95
6 6 1,75 10,2 100 10,2 104
8 8 3 10,2 82 10,2 104
1212 5 15651560
15 15 6 10,2 65 10,2 70
SM_30AW.indd 56 14-03-2011 14:45:05

Carrier 30AWH004HB Specifications

General

Brand	Carrier
Model	30AWH004HB
Category	Air Conditioner
Language	English