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Control Specification
SiENBE12-713
88
Function and Control
3.4
Discharge Pipe Control
Outline
The discharge pipe temperature is used as the compressor's internal temperature. If the
discharge pipe temperature rises above a certain level, the operating frequency upper limit is
set to keep this temperature from going up further.
Detail
Zones (typical value)
Management within the Zone
3.5
Input Current Control
Outline
Detect an input current by the CT during the compressor is running, and set the frequency
upper limit from such input current.
In case of heat pump model, this control is the upper limit control function of the frequency
which takes priority of the lower limit of four way valve activating compensation.
Detail
The frequency control will be made within the following zones.
When a “stop current” continues for 2.5 seconds after rushing on the stop zone, the compressor
operation stops.
If a “drooping current” is continues for 1.0 second after rushing on the drooping zone, the
frequency will be 2 Hz drooping.
Repeating the above drooping continues until the current rushes on the drooping zone without change.
In the unchanged zone, the frequency limit will remain.
In the return / reset zone, the frequency limit will be cancelled.
Limitation of current drooping and stop value according to the outdoor air temperature
1. In case the operation mode is cooling
$
The current droops when outdoor air temperature becomes higher than a certain level
(model by model).
2. In case the operation mode is heating (only for heat pump model)
$
The current droops when outdoor air temperature becomes higher than a certain level
(model by model).
Zone
Control contents
Stop zone
When the temperature reaches the stop zone, stop the compressor and
correct abnormality.
Drooping zone
Start the timer, and the frequency will be drooping.
Keep zone
Keep the frequency upper limit.
Return / Reset zone
Cancel the frequency upper limit.
S
top zone
Keep zone
Ret
u
rn zone
Re
s
et
zone
107°C
111°C
109°C
120°C
Drooping zone
(R5069)
2 Hz drooping 1.0
s
econd
a
fter
r
us
hing in the
drooping zone
After 2.5
s
econd
s
Compre
ss
or
s
top
s
S
top zone
Drooping zone
Keep zone
Re
s
et zone
Inp
u
t c
u
rrent
drooping
(R459
8
)
Summary of Contents for FTKS20D3VMW
Page 11: ...Introduction SiENBE12 713 x...
Page 47: ...Specifications SiENBE12 713 36 Specifications...
Page 113: ...Control Specification SiENBE12 713 102 Function and Control...
Page 235: ...Instruction SiENBE12 713 224 System Configuration...
Page 297: ...Check SiENBE12 713 286 Service Diagnosis...
Page 316: ...SiENBE12 713 Outdoor Unit Removal Procedure 305 Step Procedure Points...