Huawei NetCol5000-A User Manual page 78

ACC Precision Air Conditioner Controller
User Manual
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Issue 02 (2016-11-30)
Parameter Description
when the temperature
difference between the supply
air and dew-point is smaller
than the anti-condensation
frequency drop temperature
difference.
Anti-cond freq When the supply air
rise lim temp diff temperature is lower than the
calculated dew-point
temperature at the return air
side, condensation may occur.
To avoid condensation, the
frequency of the compressor
frequency rise is limit when
the temperature difference
between the supply air and
dew-point is smaller than the
anti-condensation frequency
rise limit temperature
difference.
Low limit for To avoid the resonance of the
speed shield compressor and pipes, the
resonant point should be
shielded. The parameter is the
low limit of the compressor
resonance frequency range.
Upp limit for To avoid the resonance of the
speed shield compressor and pipes, the
resonant point should be
shielded. The parameter is the
upper limit of the compressor
resonance frequency range.
Startup LP When the system is started, the
shielding time system pressure is relatively
low. The precision air
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A Parameter Description
Default Value
–5.0° C
 Low limit for
speed 1 shield,
Low limit for
speed 2 shield,
Low limit for
speed 3 shield: 0
RPM

Low limit for
speed 4 shield:
3330 RPM

Low limit for
speed 5 shield:
3810 RPM
 Upp limit for
speed 1 shield,
Upp limit for
speed 2 shield,
Upp limit for
speed 3 shield: 0
RPM

Upp limit for
speed 4 shield:
3390 RPM

Upp limit for
speed 5 shield:
3870 RPM
180s
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