ABB REL650 series, Applications Manual

Page: 439 / 516

XRepTyp : Reporting type. Cyclic ( Cyclic ), magnitude deadband ( Dead band ) or integral
deadband ( Int deadband ). The reporting interval is controlled by the parameter
XDbRepInt .
XDbRepInt : Reporting deadband setting. Cyclic reporting is the setting value and is
reporting interval in seconds. Magnitude deadband is the setting value in % of measuring
range. Integral deadband setting is the integral area, that is, measured value in % of
measuring range multiplied by the time between two measured values.
Limits are directly set in applicable measuring unit, V, A , and so on, for
all measureing functions, except CVMMXN where limits are set in % of
the base quantity.
XHiHiLim : High-high limit.
XHiLim : High limit.
XLowLim : Low limit.
XLowLowLim : Low-low limit.
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 settings for analog input modules in PCM600.
Calibration curves
It is possible to calibrate the functions (CVMMXN, CMMXU, VNMMXU and
VMMXU) 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
208 (example). The first phase will 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 506 334-UUS A
Section 14
Monitoring
433
Application manual