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Service Manual SM-Inverter_(i)
11
COMMAND ROTATION
-
Cut in upon termination of Starting Control.
-
Achieve capacity control by controlling the compressor rotation based on :
•
Temperature difference between set and room temperature,
∆
T.
•
Limit Rotation.
•
Defrost control.
Fuzzy Control
-
Based on temperature difference,
∆
T, current fan speed setting & current indoor operating mode at every
30 seconds interval.
LIMIT ROTATION
Determine from
•
Upper limit rotation
A minimum value was determined among the upper limits rotation, i.e. protection controls.
•
Lower limit rotation
A maximum value was determined among the lower limits rotation, i.e. protection controls.
Generally, compressor rotation is controlled within 4 zones: stop, drop, keep, up and reset subjected to a
particular operating temperature/current/pressure.
Temperature Difference
Condition 1
∆
T
Condition 2
d
∆
T
∆
T
t
= T
room
- T
set
d
∆
T
t
=
∆
T
t
-
∆
T
t-1
Use to set target for compressor frequency change
Compressor frequency is increased or
decreased
Summary of Contents for SM-12-012
Page 1: ...Service Manual SM Inverter_ i Air Conditioners Service Manual Split Inverter SM 12 012...
Page 22: ...Service Manual SM Inverter_ i 22...
Page 26: ...Service Manual SM Inverter_ i 26...
Page 45: ...Service Manual SM Inverter_ i 45 Troubleshooting...
Page 47: ...Service Manual SM Inverter_ i 47...
Page 50: ...Service Manual SM Inverter_ i 50 ATXN FTXN 50 60 LV1B 9 ARXN RXN50 60 LV1B 9...
Page 51: ...Service Manual SM Inverter_ i 51 Refrigerant Diagram ATXN FTXN 25 35 50 60 LV1B 9...