MCAC-ATSM-2011-12 Air-cooled modular chiller unit 50Hz
153
15.1.7 130kw module PCB, outlook view
15.1.8 130kw module components description
No. Detail information
1 EEV B of No.1 unit
2 EEV A of No.1 unit
3
high-pressure protection and discharge temperature switch protection of the system A of No.1 unit (protection code P0);
high-pressure protection and discharge temperature switch protection of the system B of No.1 unit (protection code P2);
low-pressure protection of the system A of No.1 unit (protection code P1);
low-pressure protection of the system B of No.1 unit (protection code P3);
Constant speed compressor: connection of discharge temperature switch and high-pressure switch of the system in series.
4
Water flow detection of No.1 unit (fault code of the main unit E0) is only valid for the main unit but invalid for subordinate units.
1) Main unit: if abnormal water flow occurs for the first and second time, the main unit board will display fault code E9. If
abnormal water flow occurs the third time, the main unit board will display fault code E0 (off-power recovery is needed), and
the wired controller will display fault code E0 (fault is displayed only after 3 detection).
5 COM (O) 485 communication port of No.1 unit (fault code E2)
6
COM (I) 485 communication port of No.1 unit (fault code E2)
COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication.
1) If faults occur between the wired controller and the main unit module, all modules will be shut down.
2) If faults occur between the main unit and slave units, the slave unit module suffering communication fault will be shut down.
Less units will be detected by the wired controller, which may display EA, and in the meanwhile, the indicator lamp of the wired
controller will flash.
7 (reserved)
To Next Page
Loading...