Schweitzer Engineering Laboratories SEL-321 - Page 335

Date Code 20011203 Firmware Versions A-3
SEL-321/321-1 Instruction Manual
Firmware
Part/Revision
No.
SEL-321 Relay Base Version
Description of Firmware
Revision B or C Main Board and Low-Level Test Capability
(ET3 or TT3):
This firmware differs from previous versions as follows:
- Corrected error in POTT logic when ETDPU set to OFF.
- Changed default setting for OSTD to 0.5 cycles.
- Modified front-panel setting SELECT function when setting
is OFF.
SEL-321-R409 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R459 50 Hz, 5 Amp, 1 I/O Board
SEL-321-R508 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R558 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-R608 60 Hz, 5 Amp, 1 I/O Board, ACB Rotation
SEL-321-R708 60 Hz, 5 Amp, 2 I/O Boards, ACB Rotation
SEL-321-R807 60 Hz, 1 Amp, 1 I/O Board
SEL-321-R858 50 Hz, 1 Amp, 1 I/O Board
SEL-321-R907 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-R956 50 Hz, 1 Amp, 2 I/O Boards
This firmware differs from previous versions as follows:
- Remove problem where changing settings of ports with
RTS/CTS enabled, CTS deasserted while messages pending
could lead to communications lockup or vector halt.
- Add check of 51XTC to warn if torque control specified by
bits that will never be set.
SEL-321-R408 60 Hz, 5 Amp, 1 I/O Board
SEL-321-R458 50 Hz, 5 Amp, 1 I/O Board
SEL-321-R507 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-R557 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-R607 60 Hz, 5 Amp, 1 I/O Board, ACB Rotation
SEL-321-R707 60 Hz, 5 Amp, 2 I/O Boards, ACB Rotation
SEL-321-R806 60 Hz, 1 Amp, 1 I/O Board
SEL-321-R857 50 Hz, 1 Amp, 1 I/O Board
SEL-321-R906 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-R955 50 Hz, 1 Amp, 2 I/O Boards