Schweitzer Engineering Laboratories SEL-701 - Section 6: ASCII Serial Port Operation; Introduction

Date Code 20010719 701 Motor Protection Relay
ASCII Serial Port Operation
Introduction
6.1
Section 6
ASCII Serial Port Operation
Introduction
You can interact with the SEL-701 Relay through the front-panel interface or the
serial port interface. This section describes the connections and commands used with
the serial port interface; the front-panel interface is discussed in Section 5: Front-Panel
Operation.
The serial port interface provides an efficient way to transfer relay settings using
the SEL-701PC software. The serial port also provides the only way to retrieve some of
the extensive data that the relay stores. Use a PC connected to the relay front-panel
serial port to download the following information:
 Load Profile data.
 Motor Start reports.
 Motor Start Trend reports.
 15-Cycle Event Reports for fault and oscillographic analysis.
 Sequential Events Recorder (SER) reports for fault analysis.
The first three of these items are described in Section 8: Metering & Monitoring;
the last two are discussed in Section 9: Event Analysis.