Mitsubishi Electric PURY-RP200 Service Handbook page 133

[ VII Control ]
-10- Control at Initial Start-up
When started up for the first time before 12 hours have elapsed after power on, the unit goes into the initial startup mode.
At the completion of the initial operation mode on the OC, they will go into the normal control mode.
1. Flowchart of initial operation
(1) RP200, RP250, RP300 models
-11- Control Method
The control system configuration for the PURY models is shown in the chart below.
Autonomous distributed control system : A system that consists of three independent sub control systems,
HWE10140
Initial startup mode starts.
50 F 60Hz
Completed in the integrated operation time of 35 minutes.
or F < 50Hz
Completed in the integrated operation time of 90 minutes.
Initial startup mode complete
Data signal exchange
between system equipment
Calculation, processing
System control
Adjustment of refrigerant flow rate
Adjustment of rotation speed of
compressor or fan
Rotation speed control of compressor
or fan depending on the refrigerant
pressure value and the changing speed
Self-contained capacity control depending
on the load
Refrigerant distribution control depending
on the operation mode
instead of a single centralized control system, that work together
to maintain the overall control of the entire system.
Non-polar 2-wire
serial communication
method
16-bit CPU
microcomputer operation
processing
*
Autonomous distributed
control system
(F2-VPM control)
- 124 -
Daisy-chained
non-polar 2-wire
transmission line
Outdoor unit
Indoor unit
BC controller
GB