Sices HS 315, Техническое руководство

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Technical Handbook 119
please, remember that disabling both checks is not possible (in this case, auxiliary source is
always considered not present).
To disable this check, one of the following conditions shall be true:
▪
P.0236 = 0 %.
▪
P.0237 = 200 %.
▪
P.0236 >= P.0237
Here follows an example about the various threshold used, including default values for a.m.
parameters.
Parameter Description Default value Frequency in Hz
P.0105 Nominal frequency 50 Hz 50.00
P.0236 Auxiliary source low frequency
threshold. 90.0 % 45.00
P.0237 Auxiliary source high
frequency threshold.
110.0 % 55.00
P.0201 Hysteresis for auxiliary source
measures 2.5 % 1.25
The hysteresis on the various thresholds is calculated as half the difference between P.0237
and P.0236. However, it is limited by the maximum value set with parameter P.0201. The
hysteresis applies to:
▪
Upwards, to the minimum frequency threshold (i.e., between 45.00 and 46.25 Hz).
▪
Downwards to the maximum frequency threshold (i.e., between 53.75 Hz and 55.00
Hz).
These values define the following bands:
0.00 V .
A band: low
45.00 V .
B band: hysteresis
46.25 (45.00 + 1.25) V .
C band: in tolerance
53.75 (55.00
– 1.25)
V .
D band: hysteresis
55.00 V .
G band: high
xxx V .
If the frequency is within the bands “B” or “D”, previous status is maintained (hysteresis). For
example, in case the voltage was within the “C” band and is now within the “D” band, it is
anyway considered “In tolerance”. On the other hand, in case the frequency was within the “C”
band, and now is within “D” band, it is considered “Low”.
Note: the controller can acquire max 74.5 Vac between JH terminals and GND. Thus, it
is mandatory to use voltage transformers to measure 230/400 Vac standard voltages.
To disable this check, one of the following conditions shall be true:
▪
P.0203 = 0 %.
▪
P.0204 = 200 %.
▪
P.0203 >= P.0204