701 Motor Protection Relay
Date Code 20010719
Maintenance & Troubleshooting
Firmware Upgrade Installation
10.10
Firmware Upgrade Installation
SEL occasionally offers firmware upgrades to improve the performance of your
relay. Since the SEL-701 Relay stores firmware in flash memory, changing physical
components is not necessary. Upgrade the relay firmware by downloading a file from a
personal computer to the relay via the front-panel serial port as outlined in the
following sections.
Required Equipment
Personal computer.
Terminal emulation software that supports XMODEM/CRC protocol
(e.g., ProComm Plus
â
, Relay Gold
™
, Microsoft Windows
â
Terminal
™
, Smartcom
™
, and Crosstalk
™
).
Serial communications cable (SEL-C234A or equivalent, or a null-
modem cable).
Disk containing firmware upgrade file.
Upgrade Instructions
The instructions below assume you have a working knowledge of your personal
computer terminal emulation software. In particular, you must be able to modify your
serial communications parameters (baud rate, data bits, parity, etc.), select transfer
protocol (XMODEM/CRC), and transfer files (e.g., send and receive binary files).
Step 1.
If the relay is in service, open its motor control circuits.
Step 2.
Connect the personal computer to the front-panel serial port and enter
Access Level 2.
Step 3.
If your SEL-701 Relay contains Rev 1.05 firmware or earlier, your
current relay settings will be erased during the upgrade procedure.
The firmware version can be checked using the
STATUS
command at
the ASCII prompt. Relay settings can be saved using the SEL-5010
software or by issuing the following commands at the ASCII prompt:
SHO
,
SHO P F
,
SHO P R
, and
SHO R
.
Also, if your current firmware is Rev 1.03 or earlier, please record the
calibration settings by issuing the
SHO C
command at the ASCII
prompt.
Step 4.
Issue the
L_D <ENTER>
command to the relay (L underscore D
<ENTER>).
Step 5.
Type
Y <ENTER>
to the “Disable relay to send or receive
firmware(Y/N)?” prompt and
Y <ENTER>
to the “Are you sure
(Y/N)?” prompt. The relay will send the SEL
BOOT
prompt !>.
Содержание SEL-701
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