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Frequency Regulating Functions
SiBE28-804
72
Functional Description
4.8
Inverter Current Protection Control
4.8.1 Control by inverter fin temperature
Restricts compressor operation upper limit frequency to prevent compressor from tripping due
to inverter fin temperature.
4.8.2 Inverter current protection control
Restricts compressor operation frequency to prevent compressor from tripping due to inverter
overcurrent.
RZQ71C7,
RZQS71·100C7V1B
RZQ100~140C7,
RZQS125·140C7V1B
A
80
84
B
84
81
Normal operation
Compressor frequency
+1 step/2 min
Inverter upper limit frequency
= Maximum frequency
Compressor frequency
–1 step/6 sec
Fin temperature
≤
B˚C
lasts for 2 minutes
Inverter fin temperature
≥
A˚C
RZQ71C7,
RZQS71·100C7V1B
RZQ100~140C7,
RZQS125·140C7V1B
PA
16.5 A
20 A
QA
16.5 A
20 A
Normal operation
Compressor frequency
–1 step/6 sec
Compressor frequency
+1 step/2 min
Inverter current
>Stepping down current
Inverter upper limit frequency
= Maximum frequency
The condition of Inverter current<Stepping down
current continues for 2 minutes
Stepping-down
current QA
Stepping-down
current PA
&
Outdoor heat exchanger temperature
(liquid)
≥
Indoor heat exchanger
temperature
Outdoor heat exchanger temperature
(liquid)
≥
25˚C
OR
Outdoor heat exchanger temperature
(liquid)
<
Indoor heat exchanger
temperature
Outdoor heat exchanger temperature
(liquid)
<
25˚C
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...