vi BE1-951 Introduction 9328900990 Rev L
Application Firmware
Version and Date
Change
1.50.00, 04/00
• This version was released to provide major upgrades to the original
functionality provided by the BE1-951 and was mailed to all
purchasers.
• Added support (metering and recording) for optional VX, Auxiliary
Voltage input sensing.
• Added 25/25VM, Sync Check with Voltage Monitor function.
• Added 27X, Auxiliary Undervoltage element.
• Revised 59X, Auxiliary Overvoltage function to allow it to monitor the
frequency measured on the VX, Auxiliary Voltage input.
• Added 24, Volts/Hertz Overexcitation element.
• Added 67, Directional Control for all overcurrent tripping elements.
• Added Distance to Fault function.
• Added optional load profile recording function.
• Revised the COMTRADE oscillographic recording function to allow
the 240 cycles of oscillographic memory to be partitioned into 6 to 16
records. Added *.hdr, COMTRADE header file to record the fault
summary and active settings associated with the fault.
• Revised power fail recovery logic and self-diagnostics function to
prevent inadvertent resets of the microprocessor when operated on
marginal AC power supply source.
1.02.01, 11/99
• Corrected bugs in Modbus protocol.
• Revised power fail recovery logic and self-diagnostics function to
reduce the possibility of inadvertent resets of the microprocessor
when operated on marginal AC power supply source.
1.02.00, 11/99
• Revised the ASCII command interface to use SG0CTG as the
command to set the CT ratio for the Optional Independent Ground
input. Originally, the command was SG-CTN. The change was made
to make it consistent with the conventions used. IN, the neutral
element, is the residual of the three-phase current input. IG, the
ground current, is the current measured at the independent ground
current input.
NOTE: The above change makes all previous versions of
firmware incompatible with BESTCOMS, graphical user interface
software.
• Revised the 60FL, VT Fuse Loss function to allow automatic blocking
logic to be individually set for current and voltage functions.
• Corrected bug in 51/27R voltage control phase time overcurrent
function that blocked overcurrent tripping for a 60FL condition when
voltage control was set to Mode C but disabled by setting (S#-
27R=0,C).
1.01.00, 08/99
• Revised oscillographic recording function to increase memory
allocation to 240 cycles of sample data.
• Revised the target reporting function to allow various functions to
adapt the targets that they post based upon user setup parameters.
• Revised the TCM, Trip Circuit Monitor function to allow its application
with AC tripping voltages.
• Revised watt/VAR metering and demand functions for full four-
quadrant metering.
• Revised the V2, negative-sequence voltage measurement function to
properly scale to V phase to neutral base regardless of the three-
phase VT connection parameter setting.
1.00.01, 05/99
• Initial release.