Schweitzer Engineering Laboratories SEL-321 - Page 353

Date Code 20011203 Firmware Versions A-21
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:
- Include support of 8 output I/O board
- Does not check validity of hidden settings
- Adequately checks for event reported being
overwritten
- STFAIL bit cleared if no alarm conditions
- Fast Operate requests have a higher priority
than ASCII and do not affect timeout
- Load encroachment logic works as intended if
PLAF and NLAF are set in same quadrant
SEL-321-1-R117 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R167 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R217 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- New M
IRRORED BITS Protocol
SEL-321-1-R116 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R166 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R216 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Corrected serial port timeout that could result
in a vector halt.
SEL-321-1-R115 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R165 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R215 60 Hz, 5 Amp, 2 I/O Boards, Rev. A