Nonvolatile Memory; Sensor Inputs For Currents And Voltages - ABB RELION SMU615 Technical Manual

Basic functions
Name
REMOTE
ALL
BEH_BLK
BEH_TST
3.6

Nonvolatile memory

In addition to the setting values, the merging unit can store some data in the
nonvolatile memory.
• Up to 1024 events are stored. The stored events are visible in WHMI and Event
viewer tool in PCM600.
• Circuit breaker condition monitoring
• Latched alarm LEDs' statuses
• Trip circuit lockout
• Counter values
3.7

Sensor inputs for currents and voltages

This chapter gives short examples on how to define the correct parameters for
sensor measurement interfaces.
Figure 21: Example of ABB Rogowski current sensor KECA 80 D85 rating plate
58
Type
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
Sensors can have correction factors, measured and verified by the sensor
manufacturer, to increase the measurement accuracy. Correction factors
are recommended to be set to the relay. Two types of correction factors
are available for voltage and current (Rogowski) sensors. The Amplitude
correction factor is named
Angle corr A(B/C) . These correction factors can be found
factor is named
on the Sensor's rating plate and/or sensor routine test protocol. If the
correction factors are not available, contact the sensor manufacturer for
more information.
Description
Control remote
Control all
Logical device LD0 block sta-
tus
Logical device LD0 test sta-
tus
Amplitude corr. A(B/C) and Angle correction
1MRS758407 C
SMU615
Technical Manual