Schweitzer Engineering Laboratories SEL-321 - Page 339

Date Code 20011203 Firmware Versions A-7
SEL-321/321-1 Instruction Manual
Firmware
Part/Revision
No.
SEL-321 Relay Base Version
Description of Firmware
Revision A Main Board:
This firmware differs from previous versions as follows:
- Fixed negative-sequence targeting (Q target).
- Fixed SHO L command when used with the 12-point I/O
board.
- Add 4800 baud selection to the communications port data
rate.
- Fixed 50HH targeting.
- Fixed double prompt when entering <CTRL> X.
SEL-321-R105 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R205 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R155 50 Hz, 5 Amp, 1 I/O Board
This firmware differs from previous versions as follows:
- Fixed UBEND and UBDURD DCUB timers.
SEL-321-R104 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R204 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R154 50 Hz, 5 Amp, 1 I/O Board
This firmware differs from previous versions as follows:
- Ability to change DATE and TIME settings from the front
panel.
SEL-321-R103 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R203 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R153 50 Hz, 5 Amp, 1 I/O Board
This firmware differs from previous versions as follows:
- The difference between R201 and R202 firmware is trans-
parent to the user. It is related to a difference in factory
calibration procedures.
SEL-321-R102 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R202 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R152 50 Hz, 5 Amp, 1 I/O Board
Original Release
SEL-321-R201 60 Hz, 5 Amp, 2 I/O Boards