701 Motor Protection Relay Date Code 20010719
Introduction & Specifications
Introduction
1.2
Section 6: ASCII Serial Port Operation. Describes how to connect the SEL-701 Relay
to a PC for communication; shows serial port connector pinouts; lists and
defines serial port commands.
Section 7: Commissioning. Describes the relay commissioning procedure;
provides protection element test procedures.
Section 8: Metering & Monitoring. Describes the operation of metering functions,
load profiling function, motor operating statistics function, motor start
reports, and motor start trending function.
Section 9: Event Analysis. Describes front-panel target LED operation, trip-type
front-panel messages, event summary data, standard 15-cycle event
reports, and Sequential Events Recorder (SER) report.
Section 10: Maintenance & Troubleshooting. Describes relay self-test alarms, relay
troubleshooting, and power supply fuse replacement; provides firmware
upgrade instructions.
Appendix A: Firmware Versions. Lists the current relay firmware version and
details differences between the current and previous versions.
Appendix B: SELOGIC
®
Control Equations & Relay Logic. Discusses the relay word,
SELOGIC control equations, motor stop and start logic, local and remote
control switches, and front-panel display configuration; provides tables
detailing all Relay Word bits and their definitions.
Appendix C: Modbus
®
RTU Communications Protocol. Describes the Modbus protocol
support provided by the SEL-701 Relay.
Appendix D: SEL-2020/2030 & SEL-701PC Compatibility Features. Describes commands
implemented to support the SEL-701PC software and SEL
communications processors.
Appendix E: Motor Thermal Element. Contains a fundamental description
of the SEL-701 Relay’s thermal element. Describes interpretation of
% Thermal Capacity and Thermal Capacity Used to Start quantities.
Appendix F: SEL-701 Relay Settings Sheets. Contains completed relay settings sheets
containing factory default settings and blank settings sheets you can
photocopy and complete to record settings for the SEL-701 Relay.
SEL-701 Relay Command Summary. Briefly describes the serial port commands
that are described in detail in Section 6: ASCII Serial Port Operation.
To Next Page
Loading...
