Capacity Control; Current Release Control - Toshiba RAS-B10GKVP-E Service Manual

Item
4. Capacity
control
Indoor unit A
Indoor unit B
Operation
Outdoor unit
mode
M18GAV-E
Cooling
M18GACV-E
M18GAV-E Heating
M14GAV-E
Cooling
M14GACV-E
M14GAV-E Heating
5. Current release This function prevents troubles on the electronic parts of the
control compressor driving inverter.
This function also controls drive circuit of the compressor
speed so that electric power of the compressor drive circuit
does not exceed the specified value.
Outdoor unit inverter main
circuit control current
Operating current ≤
Setup value
Low
Capacity control continues.
Outdoor temp.
40˚C
16˚C 39˚C
11˚C 15.5˚C
10.5˚C
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Operation flow and applicable data, etc.
Outdoor unit
Inverter
No.of Combination
operating unit of indoor units
10
1 unit 13
16
10
13
2 units
13
16
10
1 unit 13
16
10
13
2 units
13
16
10
1 unit
13
10
2 units
13
10
1 unit
13
10
2 units
13
Outdoor temp. To
Setup of current release point
High
Reduce compressor speed
Current decrease
Cooling current
release value
7.5A
12.0A
– 42 –
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1) Indoor unit A and Indoor unit B
Compressor
Compressor
2) The outdoor unit receives the
revolution (rps)
— 13 to 045
— 13 to 071
— 13 to 079
10 15 to 083
3) The compressor operation range
10 15 to 083
13 15 to 083
10 15 to 083
— 13 to 076
— 13 to 099
— 13 to 102
10 15 to 120
10 15 to 120
13 15 to 120
10 15 to 120
— 13 to 056
— 13 to 074
10 18 to 074
10 18 to 075
— 13 to 075
— 13 to 080
10 16 to 084
10 16 to 085
1) The input current of the outdoor
2) According to the detected
3) Whether the current value
4) If the current value exceeds the
Heating current
release value
10.1A
10.3A
10.5A
Description
determine the respective
instruction revolutions from the
difference between the remote
controller setting temperature
(Ts) and the indoor temperature
(Ta), and transmit this to the
outdoor unit.
instructions from the indoor units,
and the inverter operates the
compressor at the calculated
revolutions.
in each operating mode is shown
in the left table.
unit is detected in the inverter
section of the outdoor unit.
outdoor temperature, the
specified value of the current is
selected.
exceeds the specified value or
not is judged.
specified value, this function
reduces the compressor speed
and controls speed up to the
closest one commanded from the
indoor unit within the range
which does not exceed the
specified value.
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