Schweitzer Engineering Laboratories SEL-321 - Page 350

A-18 Firmware Versions Date Code 20011203
SEL-321/321-1 Instruction Manual
Firmware
Part/Revision No.
SEL-321-1 Relay 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:
- 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.
- Add Fast Operate function.
- Add compressed ASCII configuration message.
- Add FAST_OP port setting.
SEL-321-1-R404 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R454 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R504 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R554 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R605 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R705 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R804 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R854 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R904 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R955 50 Hz, 1 Amp, 2 I/O Boards
SEL-321-1 Relay includes SEL-321 Relay base version plus:
- 51PTC setting which allow torque control of phase time-
overcurrent element by load encroachment element.
- PULSE command to independently close output contacts.
- Limited-Multidrop (LMD) protocol.
- Fast Meter messages.
- Compressed ASCII commands.
- The CONTROL command which allows the user to set, clear
or pulse the new relay elements RB1 - RB16.
SEL-321-1-R402 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R452 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R502 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R552 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R603 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R703 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R802 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R852 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R902 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R953 50 Hz, 1 Amp, 2 I/O Boards