Schweitzer Engineering Laboratories SEL-321 - Page 351

Date Code 20011203 Firmware Versions A-19
SEL-321/321-1 Instruction Manual
Firmware
Part/Revision No.
SEL-321-1 Relay Version
Description of Firmware
Revision A Main Board:
This firmware differs from previous versions as
follows:
- Fix for TCM logic bug.
SEL-321-1-R126-Z001001-D20011203 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R176-Z001001-D20011203 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R226-Z001001-D20011203 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Improved frequency tracking algorithm.
- Availability of 59Q and 59P elements when
advanced LOP is enabled.
SEL-321-1-R125-Z001001-D20011026 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R175-Z001001-D20011026 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R225-Z001001-D20011026 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Increased Z1ANG, Z0ANG, k01A, and k0A
setting ranges.
- New LOP logic and IEC 1000-4-5 compliance.
- Improved M
IRRORED BITS communications.
- Improved Fast Meter communications.
SEL-321-1-R124-Z001001-D20000721 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R174-Z001001-D20000721 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R224-Z001001-D20000721 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Improved Fast Meter communications.
- Improved M
IRRORED BITS communications.
SEL-321-1-R123-D991020 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R173-D991020 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R223-D991020 60 Hz, 5 Amp, 2 I/O Boards, Rev. A