Midea MV5-X252W/V2GN1 Service Manual page 27

V5 X VRF 50/60Hz
5.3 Compressor Step Control
The running speed of the compressors in rotations per second (rps) is half the frequency (in Hz) of the electrical input to
the compressor motors. The compressor speed can be altered in increments of 1 rps.
5.4 Operating Priority and Rotation of Compressors
Figures 3-5.1 to 3-5.4 show the compressor operating priority and rotation in systems with one, two, three and four
outdoor units. In units with two compressors, inverter compressor A (BP1) operates in priority to inverter compressor B
(BP2). In multi-unit systems, units operate in rotation. In Figures 3-5.2 to 3-5.4 the master unit and slave units 1, 2 and 3
are shown from left to right in that order, and the circled numbers (
Figure 3-5.1: Compressor priority and rotation – one outdoor unit
Figure 3-5.2: Compressor priority and rotation – two outdoor units
No. 1
①
②
No. 2
BP
Figure 3-5.3: Compressor priority and rotation – three outdoor units
No. 1
①
No. 3
②
No. 2
③
BP
No. 1 No. 2 No. 3
①
No. 4 No. 5 No. 1
②
No. 2 No. 3 No. 4
③
BP1 BP2 BP1
26
No. 1
BP
No. 2 No. 1
①
②
No. 2
No. 1
BP BP1
No. 2 No. 3
No. 1 No. 2
No. 3 No. 1
BP BP
No. 4 No. 5
No. 2 No. 3
No. 5 No. 1
BP2 BP
, , , ) indicate the rotation sequence.
① ② ③ ④
No. 2 No. 3
①
②
No. 3 No. 1
BP2 BP
No. 1 No. 2
①
No. 3 No. 4
②
No. 2 No. 3
③
BP1 BP2
No. 1 No. 2
①
② No. 5 No. 6
③
No. 3 No. 4
BP1 BP2
No. 1 No. 2
BP1 BP2
No. 1 No. 2 No. 3
No. 3 No. 4 No. 1
BP1 BP2 BP
1
No. 3 No. 4
No. 1 No. 2
No. 4 No. 1
BP BP
No. 3 No. 4 No. 5
No. 1 No. 2 No. 3 No. 4
No. 5 No. 6 No. 1 No. 2
BP1 BP2 BP1
No. 4
No. 2
BP2
No. 6
BP2
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