ABB REC670 Applications Manual page 520

Section 17
Monitoring
514
Observe the related zero point clamping settings in Setting group N for CVMMXN
(VGenZeroDb and IGenZeroDb). If measured value is below VGenZeroDb and/or
IGenZeroDb calculated S, P, Q and PF will be zero and these settings will override
XZeroDb.
XRepTyp: Reporting type. Cyclic (Cyclic), magnitude deadband (Dead band), integral
deadband (Int deadband) or Deadband and xx se cyclic (xx: 5 sec, 30 sec, 1 min). The
reporting interval is controlled by the parameter XDbRepInt.
XDbRepInt: This setting handles all the reporting types. If setting is deadband in
XRepTyp, XDbRepInt defines the deadband in m% of the measuring range. For cyclic
reporting type (XRepTyp : cyclic), the setting value reporting interval is in seconds.
Magnitude deadband is the setting value in m% of measuring range. Integral deadband
setting is the integral area, that is, measured value in m% of measuring range
multiplied by the time between two measured values.
XHiHiLim: High-high limit. Set as % of YBase (Y is SBase for S,P,Q UBase for
Voltage measurement and IBase for current measurement).
XHiLim: High limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage
measurement and IBase for current measurement).
XLowLim: Low limit. Set as % of YBase (Y is SBase for S,P,Q UBase for Voltage
measurement and IBase for current measurement).
XLowLowLim: Low-low limit. Set as % of YBase (Y is SBase for S,P,Q UBase for
Voltage measurement and IBase for current measurement).
XLimHyst: Hysteresis value in % of range and is common for all limits.
All phase angles are presented in relation to defined reference channel. The parameter
PhaseAngleRef defines the reference, see Section
Calibration curves
It is possible to calibrate the functions (CVMMXN, CMMXU, VMMXU and
VNMMXU) to get class 0.5 presentations of currents, voltages and powers. This is
accomplished by magnitude and angle compensation at 5, 30 and 100% of rated current
and voltage. The compensation curve will have the characteristic for magnitude and
angle compensation of currents as shown in figure
be used as reference channel and compared with the curve for calculation of factors.
The factors will then be used for all related channels.
1MRK 511 401-UUS A
"Analog inputs".
206 (example). The first phase will
Bay control REC670 2.2 ANSI
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