RIGENERATIVE
SINUS PENTA
APPLICATION
92/
140
0
1
2
3
4
0
1
2
3
4
3.4.2.
L
IST OF
P
ROGRAMMABLE
P
ARAMETERS
P530
TO
P540
AND
I003
Parameter
FUNCTION
User Level
MODBUS
Address
DEFAULT
VALUES
P530
Number of Half-line Cycles
ENGINEERING
956
10 T/2
P531a/b/c Phase A/B/C Voltage RMS Gain
ENGINEERING 958/959/960
0
P532a/b/c Phase A/B/C Current RMS Gain
ENGINEERING 961/962/963
0
P533a/b/c Phase A/B/C Active Power Gain
ENGINEERING 964/965/966
0
P534a/b/c Phase A/B/C Reactive Power Gain
ENGINEERING 967/968/969
0
P535a/b/c Phase A/B/C Voltage RMS Offset
ENGINEERING 970/971/972
0
P536a/b/c Phase A/B/C Current RMS Offset
ENGINEERING 973/974/975
0
P537a/b/c Phase A/B/C Active Power Offset
ENGINEERING 976/977/978
0
P538a/b/c Phase A/B/C Reactive Power Offset
ENGINEERING 979/980/981
0
P539a/b/c Phase A/B/C Phase Calibration
ENGINEERING 982/983/984
0
P540
NoLoad Threshold
ENGINEERING
953
0:Disabled
I003
Energy Counter Reset
ENGINEERING
1390
Inactive
Table 9: List of parameters P530 to P540 and I003.
P530 Number of Half-line Cycles
P530
Range
0
÷
65535
0
÷
65535 T/2
Default
10
10 T/2
Level
ENGINEERING
Address
956
Function
This parameter sets the number of half-line cycles for the accumulation of
the active energy and the reactive energy in the respective counters.
Example: when frequency is 50Hz, T=20ms and T/2=10ms; if P530=100
T/2, energy is accumulated every 100x10=1s.
If P530 is set to high values, the calculation of energy accumulation is
slower but accurate; on the other hand, if P530 is set to low values, the
calculation of energy accumulation is faster but less accurate.
As a general rule, set short times when high power ratings are required,
and set longer times when low power ratings are required.
CAUTION
When the number of half-line cycles is set too high, overflow can occur,
specially in case of high power ratings, thus turning “plus” into “minus”
and vice versa.
