Schweitzer Engineering Laboratories SEL-321 - Page 355

Date Code 20011203 Firmware Versions A-23
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:
- Used PT input instead of PTRX in POTT
logic.
- Targeting modification to target on all rising
edges of trip.
- Direct transfer tripping allowed with
supervision of pole open.
- Hide FAST_OP port setting when
PROTOCOL=R.
SEL-321-1-R110 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R160 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R210 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Added relay-to-relay integral
communications-assisted protection.
SEL-321-1-R109 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R159 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R209 60 Hz, 5 Amp, 2 I/O Boards, Rev. A
This firmware differs from previous versions as
follows:
- Corrected compressed ASCII configuration
message.
- Added CEV L and CEV C to compressed
ASCII configuration message.
- Display fault location, LOC, in CHI
compressed ASCII command as a floating
point number instead of a string.
- Add device identification number to ID
command transmission.
SEL-321-1-R108 60 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R158 50 Hz, 5 Amp, 1 I/O Board, Rev. A
SEL-321-1-R208 60 Hz, 5 Amp, 2 I/O Boards, Rev. A