ABB REF 54 Series Technical Reference Manual, General page 108

REF 54_
108
Feeder Terminal
Technical Reference Manual, General
Function blocks
• Function block revision added (uploading of the function block list to CAP 505).
• Measurement function blocks: outputs indicating the status of warning and alarm
limits added.
• Under- and overvoltage protection function blocks UV3_ and OV3_:
• Phase-selective start outputs added.
• Control setting parameter "Oper. hysteresis" added for adjusting the level of a
comparator (for more information, refer to the CD-ROM "Technical
Descriptions of Functions").
• EVENT230 function block: input interface changed.
• Changes to input names in the following function blocks: UV3Low, UV3High,
OV3Low, OV3High, MEVO3A, CMVO3.
• MEPE7, the function block for power and energy measurement:
• Events for energy (E), apparent power (S), and cos
• Time-based delta event sending added.
• The SCVCSt_ function block is bypassed when it is in "Not in use" mode.
Table 8.3.1-1 New protection functions
Function Description
CUB1Cap Three-phase current unbalance protection for shunt capacitor banks
OL3Cap Three-phase overload protection for shunt capacitor banks
PSV3St1 Phase-sequence voltage protection, stage 1
PSV3St2 Phase-sequence voltage protection, stage 2
MotStart Three-phase start-up supervision for motors
TOL3Dev Three-phase thermal overload protection for devices
Table 8.3.1-2 New measurement functions
Function Description
MEAI1 General measurement 1 / analog input on RTD/analog module
MEAI2 General measurement 2 / analog input on RTD/analog module
...
MEAI8 General measurement 8 / analog input on RTD/analog module
MEAO1 Analog output 1 on RTD/analog module
MEAO2 Analog output 2 on RTD/analog module
MEAO3 Analog output 3 on RTD/analog module
MEAO4 Analog output 4 on RTD/analog module
MECU3B Three-phase current measurement, stage B
MEVO1B Residual voltage measurement, stage B
MEVO3B Three-phase voltage measurement, stage B
Table 8.3.1-3 New power quality functions
Function Description
PQCU3H Current waveform distortion measurement
PQVO3H Voltage waveform distortion measurement
1MRS750527-MUM
ϕ
added.