Toshiba RAS-10JAVP-E, Руководство по обслуживанию

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Item
4. Capacity
control
Operation flow and applicable data, etc.
The cooling or heating capacity corresponding to the load is
adjusted.
According to difference between the setup value of tempera-
ture and the room temperature, the capacity is adjusted by
varying No. of revolution of the compressor operation.
Description
1) The difference between tempera-
ture set on remote controller (Ts)
and temperature of indoor unit
(Ta) is detected.
2) According to the temperature
difference, the correction value of
Hz signal which determines No.
of revolution of the compressor is
set up.
3) The rotating position/No. of
revolution of the motor are
detected by the electromotive
force occurred on the motor
winding along with operation of
the compressor.
4) According to the difference
resulted from comparison of the
correction value of Hz signal with
the present operation Hz, the
inverter output and the commuta-
tion timing are varied.
5) Change No. of revolution of the
compressor motor by outputting
power to the compressor.
* The contents of control opera-
tion are same in cooling
operation and heating opera-
tion
This function prevents troubles on the electronic parts such
as GTr or compressor of the compressor driving inverter.
This function also controls No. of revolution of the compres-
sor so that power value of the compressor driving circuit
does not exceed the specified value.
1) The input current of the outdoor
unit is detected in the connecting
section of the outdoor unit
(Inverter assembly).
2) According to conditions of the
detected outdoor temperature,
the specified value of the current
is set up.
3) Whether the current value
exceeds the specified value or
not is judged by No. of revolution
of the compressor commanded
from the indoor unit.
4) If the current value exceeds the
specified value, this function
decreases No. of revolution of
the compressor and controls No.
of revolution up to the closest
one commanded from the indoor
unit within the range which does
not exceed the specified value.
5. Current release
control
Temp. setup value (Ts) Indoor temp. (Ta)
Correction of Hz signal
Outdoor temp. To
Setup of current release point
Capacity control continues.
Outdoor temp.
45˚C
40˚C 44˚C
5.62A
9.00A
9.82A
10.31A
10.80A
16˚C 39˚C
11˚C 15.5˚C
10.5˚C
Cooling current
release value
Heating current
release value
Detection of electromotive force
of compressor motor winding
Detection of motor rotating
position/No. of revolution
Inverter output change
Commutation timing change
Change of No. of
revolution of compressor
Remote controller Indoor unit
Ts –Ta
Current down
Correction value of Hz
signal Operating Hz
Main circuit control current
of outdoor unit inverter
High
Low
Compressor operation
Hz down
Operating current
Setup value