ABB RELION 670 Series Technical Manual page 1037

1MRK 502 066-UUS B
High-high limit
High limit
Low limit
Low-low limit
IEC05000657 V2 EN-US
Figure 535: Presentation of operating limits
Each analog output has one corresponding supervision level output (X_RANGE). The output signal
is an integer in the interval 0-4 (0: Normal, 1: High limit exceeded, 3: High-high limit exceeded, 2:
below Low limit and 4: below Low-low limit). The output may be connected to a measurement
expander block (XP (RANGE_XP)) to get measurement supervision as binary signals.
The logical value of the functional output signals changes according to figure 535.
The user can set the hysteresis (
operating and reset value at each operating point, in wide range for each measuring channel
separately. The hysteresis is common for all operating values within one channel.
Actual value of the measured quantity
The actual value of the measured quantity is available locally and remotely. The measurement is
continuous for each measured quantity separately, but the reporting of the value to the higher
levels depends on the selected reporting mode. The following basic reporting modes are available:
• Cyclic reporting (
• Magnitude dead-band supervision (
• Integral dead-band supervision (
Cyclic reporting
The cyclic reporting of measured value is performed according to chosen setting (
measuring channel reports the value independent of magnitude or integral dead-band reporting.
In addition to the normal cyclic reporting the IED also report spontaneously when measured value
passes any of the defined threshold limits.
Technical manual
Y
X_RANGE = 3
X_RANGE= 1
X_RANGE=0
X_RANGE=0
X_RANGE=2
X_RANGE=4
XLimHyst ), which determines the difference between the
Cyclic )
Hysteresis
Dead band )
Int deadband )
t
IEC05000657-2-en.vsdx
XRepTyp ). The
Section 16
Monitoring
SEMOD54417-150 v3
SEMOD54417-158 v3
1031