Date Code 20010719
701 Motor Protection Relay
Table of Contents
v
Section 10: Maintenance & Troubleshooting
Routine Maintenance Checks .........................................................................10.1
Self-Testing .....................................................................................................10.3
Troubleshooting Procedure .............................................................................10.6
Power Supply Fuse Replacement....................................................................10.8
Real-Time Clock Battery Replacement ..........................................................10.9
Firmware Upgrade Installation .....................................................................10.10
Factory Assistance ........................................................................................10.13
OGIC®
Control Equations & Relay Logic
Introduction...................................................................................................... B.1
Relay Functional Overview ............................................................................. B.2
Relay Word Bits ............................................................................................... B.4
SEL
OGIC
Control Equations ............................................................................ B.9
Factory Default Logic Settings ...................................................................... B.13
Front-Panel Display Message Configuration................................................. B.15
Nondedicated SEL
OGIC
Control Equation Variable Settings ........................ B.16
Latch Control Switch Settings ....................................................................... B.17
Stop/Trip Logic .............................................................................................. B.19
Breaker Auxiliary Contact SEL
OGIC
Control Equation Setting .................... B.22
Start and Emergency Restart Logic ............................................................... B.23
ACCESS2 SEL
OGIC
Control Equation Setting.............................................. B.25
OGIC
Control Equation Setting .................................................... B.26
OGIC
Control Equation Setting......................................... B.27
OGIC
Control Equation................................................ B.28
Contact Output Control.................................................................................. B.29
Remote Control Switches .............................................................................. B.30
Selected Relay Logic Diagrams..................................................................... B.32
®
RTU Communications Protocol
Introduction...................................................................................................... C.1
Modbus RTU Communications Protocol......................................................... C.2
01h Read Coil Status Command ...................................................................... C.5
02h Read Input Status Command .................................................................... C.6
03h Read Holding Registers Command........................................................... C.7
04h Read Input Registers Command ............................................................... C.8
05h Force Single Coil Command..................................................................... C.9
06h Preset Single Register Command............................................................ C.10
07h Read Exception Status Command........................................................... C.11
08h Loopback Diagnostic Command ............................................................ C.12
10h Preset Multiple Registers Command ...................................................... C.13
Controlling Output Contacts & Remote Bits Using Modbus ........................ C.14
Reading the Relay Status Using Modbus....................................................... C.16
User-Defined Modbus Data Region............................................................... C.17
Содержание SEL-701
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