ABB Relion 670 Series RES670, Technical Manual

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IEC05000657-2-en.vsdx
X_RANGE= 1
X_RANGE = 3
X_RANGE=0
Hysteresis
High-high limit
High limit
Low limit
Low-low limit
X_RANGE=2
X_RANGE=4
Y
t
X_RANGE=0
IEC05000657 V2 EN
Figure 187: 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 187 .
The user can set the hysteresis ( XLimHyst ), which determines the difference between the
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 ( Cyclic )
• Magnitude dead-band supervision ( Dead band )
• Integral dead-band supervision ( Int deadband )
1MRK 511 365-UUS A
Section 16
Monitoring
Phasor measurement unit RES670 2.1 ANSI 507
Technical manual