York EVJC 12, Руководство по установке

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3. Frequency limited
If
Ǐ
T
Limited frequency temperature of module
ǐ
≤
T
Module
˘Ǐ
T
frequency reducing temperature at normal speed of module
ǐ
, you should limit the
frequency raising of compressor.
4. Reducing frequency at normal speed and power turn-off:
If
Ǐ
T
frequency reducing temperature at normal speed of module
ǐ
≤
T
Module
˘ Ǐ
T
frequency reducing temperature at high speed of module
ǐ
, you should
adjust the compressor frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit,
if
Ǐ
T
frequency reducing temperature at normal speed of module
ǐ
≤
T
Module
, you should stop the machine for module overheating
protection;
5. Reducing frequency at high speed and power turn-off:
If
Ǐ
T
frequency reducing temperature at high speed of module
ǐ
≤
T
Module
˘Ǐ
T
Power turn-off temperature of module
ǐ
you should adjust the
compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if
Ǐ
T
frequency reducing temperature at normal speed of module
ǐ
≤
T
Module
, you should stop the machine for module overheating
protection;
6. Power turn-off:
If the
Ǐ
T
Power turn-off temperature of module
ǐ
≤
T
Module
, you should stop the machine for module overheating protection; If
T
Module
˘Ǐ
T
Limited frequency temperature of module
ǐ
and the compressor has been stopped for 3 minutes, the machine
should be allowed to operate.
7. If the discharging temperature protection of compressor continuously occurs for six times, it should not be
resumed automatically, and you should press the ON/OFF button to resume. During the process of running, if the
running time of compressor exceeds the
Ǐ
t
Protection times clearing of module
ǐ
, the discharge protection is cleared to
recount. Stopped or transferred to supply air mode will clear the trouble times immediately (if the trouble can not
be resumed, mode transferring also will not clear it).
(9) Compressor overloads protection
If you measure the compressor overload switch action in 3s, the compressor should be stopped for overloading.
The machine should be allowed to operate after overload protection was measured to resume.
If the overloading protection continuously occurs for three times, it should not be resumed automatically, and you
should press the ON/OFF button to resume. The protection times of compressor is allowed to clear after the
compressor run
Ǐ
t
Protection times clearing of compressor overloading
ǐ
30 minutes.
(10) Phase current overcurrent protection of compressor
During the running process of compressor, you could measure the phase current of the compressor, and control
it according to the following steps:
1. Raising the frequency slowly:
During the process of raising phase current and frequency of compressor, if the
Ǐ
I
Slowly raising frequency phase current
ǐ
≤
I
Phase current
˘Ǐ
T
Limited frequency phase current
ǐ
, the frequency raising speed should be executed according to the
Ǐ
F
Preventing protection frequency raising speed
ǐ
; If I
Phase current
˘ Ǐ
I
Slowly raising frequency phase current
ǐ
, you should exit the slowly raising
control.
2. Frequency limited
If
Ǐ
I
Limited frequency phase current
ǐ
≤
I
Phase current
˘Ǐ
T
frequency reducing phase current
ǐ
, you should limit the frequency raising of
compressor.
3. Reducing Frequency
If [I
Frequency Reducing Phase Current
]
≤
I
Phase Current
˘
[I
Power Turn-Off Phase Current
], the compressor shall continue to reduce
frequency till the lowest frequency limit or out of the condition of reducing frequency;
4. Power turn-off
If I
Phase Current
≥
[I
Power Turn-Off Phase Current
], the current over protection for phase current of compressor shall stop work;
if I
Phase Current
≤
[I
Frequency Reducing Phase Current
], and the compressor have stopped work 3 min, the machine shall be
allowed to come back to operate;
5. If it still can’t run automatically when the current over protection for phase current of compressor happens to
stop working for 6 times in succession, it shall press ON/OFF to operate. During the running period, it should
clear and recount the stopping times to current over protection when the running time of compressor exceeds [t
Clearing Time of Compressor Phase Current Times
].
(11) Starting-up Failure Protection for Compressor
Stop it after the compressor starting-up fails, restart after 20s if the fault doesn’t shows, and if they are all failing
for the successive start 3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min.
When it still not be able to operate through carry out the above process for 5 times, it is available if press ON/OFF.
And the compressor should be cleared the times after running 2 min.
(12) Out-of-Step Protection for Compressor
The out-of-step protection signal should be detected immediately after starting-up compressor, and once find the
out-of-step protection signal, the out-of-step protection shall be stopped; if it can run for lasting power turn-off 3
min, the machine shall be allowed to operate.
Operation
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