Capacity Control; Current Release Control - Toshiba RAS-3M18S3AV-E Service Manual

Item
3. Capacity
RAS-2M18S3AV-E, -TR, -A
Operation
control
mode
COOL
RAS-2M14S3AV-E, -TR
Operation
mode
COOL
4. 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.
45˚C
40˚C
16˚C
11˚C
Operation flow and applicable data, etc.
No.of Combination
operating of indoor units
unit (kBTU)
1 unit 07
10
13
16
2 units *
Sleep or quiet -
operation
No.of Combination
operating of indoor units
unit (kBTU)
1 unit 07
10
13
2 units *
Sleep or quiet -
operation
Setup of current release point
High
Reduce compressor speed
Cooling current
release value
44˚C 8.5 A
8.5 A
39˚C
15.5˚C
10.5 A
10.5˚C
Compressor Operation No.of
revolution mode operating
(rps) unit
13〜46 HEAT 1 unit
13〜46
13〜70
13〜79
15〜83 2 units
〜43 Sleep or quiet
operation
* In case that any multiple indoor units are combined.
Compressor Operation No.of
revolution mode operating
(rps) unit
13〜46 HEAT 1 unit
13〜46
13〜58
15〜59 2 units
〜33 Sleep or quiet
operation
* In case that any multiple indoor units are combined.
Outdoor temp. To
Current decrease
Heating current
release value
11.5 A
11.5 A
11.5 A
- 53 -
FILE NO. SVM-15102
Description
Combination Compressor
of indoor units revolution
(kBTU) (rps)
07 13〜68
10 13〜68
13 13〜74
16 13〜89
* 15〜101
- 〜48
Combination Compressor
of indoor units revolution
(kBTU) (rps)
07 13〜62
10 13〜62
13 13〜66
* 15〜71
- 〜38
1) The input current of the outdoor
unit is detected in the inverter
section of the outdoor unit.
2) According to the detected
outdoor temperature, the
specified value of the current is
selected.
3) Whether the current value
exceeds the specified value or
not is judged.
4) If the current value exceeds the
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.