Daikin SM-12-012, Руководство по обслуживанию

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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