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SiBE28-804
Frequency Regulating Functions
Functional Description
69
4.5
High Pressure Protection Control
Outline
In order to prevent abnormal high pressures in the system and hence avoiding activation of the
high pressure safety device the below control function will be activated.
Details
The high pressure value will be calculated from the low pressure, power input and compressor
frequency. In case of RZQ100~140C7, RZQS125·140C7, low pressure is a calculated value.
HPS opens at : 40 bar (tolerance: +0 / -0.15)
HPS closes at : 30 bar (tolerance : +/- 0.15)
Flow chart
Parameters
As the bearing resistance limit pressure decreases during slow operation of the compressor, the
lower limit of frequency is restricted.
Normal operation
OR
Hp > (C) bar
15 times or
less stop-
ping in 300
minutes
Normal operation
Compressor operation
frequency B Hz
Compressor stop
Malfunction stop (E3 indication)
Malfunction stop (E3 indication)
Compressor stop
Compressor operation
frequency A Hz
Compressor operation
frequency –1 step/10 sec
Compressor operation
fre1 step/1 min
Compressor operation
fre1 step/5 min
Hp > (D) bar
Hp > (C) bar
OR
OR
&
&
Hp < (H) bar
• Hp > (I) bar
• HPS activates
• HPS activates
• Stopped 16 times in
300 minutes
Hp < (F) bar
• HPS activates
• Hp > (E) bar for
1 minute
• HPS activates
• Stopped 16 times
in 300 minutes
(When cooling operation)
(When heating operation)
Hp < (G) bar
• Hp < 3.24Mpa
• 30 sec elapsed
RZQ71C7,
RZQS71·100C7V3B
RZQ100~140C7,
RZQS125·140C7V1B
A Hz
118.5 Hz
62 Hz
B Hz
93 Hz
62 Hz
C bar
32.2 bar
36.8 bar
D bar
33.2 bar
37.7 bar
E bar
39.2 bar
39.2 bar
F bar
31.8 bar
36.3 bar
G bar
29.4 bar
34.3 bar
H bar
30.8 bar
35.8 bar
I bar
39.2 bar
39.2 bar
Hp
≥
3.04MPa
[In cooling/heating operation]
Normal operation
Hp
≤
2.84MPa
After 30 seconds
Compressor frequency lower limit
48Hz (RZQ71, RZQS71·100)
61.5Hz (RZQ100~140, RZQS125·140)
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 ...