Schweitzer Engineering Laboratories SEL-749M - Page 11

Date Code 20080918 Instruction Manual SEL-749M Relay
List of Figures
R.Instruc tion Manual
Figure 1.1 Response Header .................................................................................................................... 1.6
Figure 1.2 STA Command Response—No Communications Card or Communications Card/Modbus
RTU Protocol...................................................................................................................... 1.6
Figure 1.3 STA Command Response—Communications Card/DeviceNet Protocol.............................. 1.6
Figure 2.1 Relay Panel-Mount Dimensions............................................................................................. 2.2
Figure 2.2 Rear-Panel Connections of Card Options .............................................................................. 2.7
Figure 2.3 PTC Input, EIA-232/EIA-485 Communications Card, 3 DI/4 DO /1 AO Card, and Voltage Card
Options................................................................................................................................................... 2.8
Figure 2.4 IRIG-B Input, DeviceNet Card, 3 DI / 4 DO/1 AO Card, and Voltage Card Options............ 2.9
Figure 2.5 IRIG-B Input, 8 DI Card, 3 DI / 4 DO / 1 AO Card, and Voltage Card Options................... 2.10
Figure 2.6 Control I/O Connections ...................................................................................................... 2.12
Figure 2.7 Output OUT103 Relay Output Contact Configuration ........................................................ 2.13
Figure 2.8 OUT103 Contact Fail-Safe and Nonfail-Safe Options......................................................... 2.14
Figure 2.9 Contactor Application Using Factory Default Settings........................................................ 2.14
Figure 2.10 Voltage Connections............................................................................................................. 2.15
Figure 2.11 AC Connections With Core-Balance CT.............................................................................. 2.16
Figure 2.12 Control Connections for Failsafe Tripping........................................................................... 2.16
Figure 2.13 AC Connections for Star-Delta Starting............................................................................... 2.17
Figure 2.14 Control Connections for Star-Delta Starting ........................................................................ 2.17
Figure 2.15 AC Connections for a Two-Speed Motor-Paralleled CTs .................................................... 2.18
Figure 3.1 Serial Port Communication Dialog Box................................................................................. 3.2
Figure 3.2 Serial Port Communication Parameters Dialog Box.............................................................. 3.2
Figure 3.3 Tools Menu............................................................................................................................. 3.3
Figure 3.4 Device Response to the ID Command ................................................................................... 3.3
Figure 3.5 Selection of Drivers................................................................................................................ 3.6
Figure 3.6 Update Part Number............................................................................................................... 3.7
Figure 3.7 New Setting Screen ................................................................................................................ 3.7
Figure 3.8 Expressions Created With Expression Builder ...................................................................... 3.9
Figure 3.9 Composite Screens for Retrieving Events............................................................................ 3.10
Figure 3.10 Saving the Retrieved Event .................................................................................................. 3.11
Figure 3.11 Device Overview Screen ...................................................................................................... 3.12
Figure 3.12 Control Screen...................................................................................................................... 3.13
Figure 3.13 Remote Operation Selection................................................................................................. 3.13
Figure 4.1 Thermal Overload Limits (Rating Method) ...........................................................................4.6
Figure 4.2 Thermal Overload Limits (Curve Method) ............................................................................ 4.8
Figure 4.3 Overcurrent Element Logic .................................................................................................. 4.12
Figure 4.4 Ground Fault Protection Using Core-Balance CT ............................................................... 4.13
Figure 4.5 Load-Jam Element Logic ..................................................................................................... 4.14
Figure 4.6 Undercurrent (Load-Loss) Logic .........................................................................................4.14
Figure 4.7 Current Imbalance Element Logic ....................................................................................... 4.16
Figure 4.8 Monitoring Starting Time..................................................................................................... 4.17
Figure 4.9 Phase Reversal Element Logic ............................................................................................. 4.19
Figure 4.10 Stalling During Starting ....................................................................................................... 4.20
Figure 4.11 Speed Switch Logic.............................................................................................................. 4.20
Figure 4.12 Characteristic of PTC Sensors as per IEC 34-11-2 .............................................................. 4.21
Figure 4.13 Undervoltage Element Logic................................................................................................ 4.25
Figure 4.14 Overvoltage Element Logic.................................................................................................. 4.25
Figure 4.15 Reactive Power (VAR) Element Logic................................................................................. 4.26
Figure 4.16 Underpower Element Logic ................................................................................................. 4.27
Figure 4.17 Power Factor Elements Logic .............................................................................................. 4.28
Figure 4.18 Loss-of-Potential (LOP) Logic............................................................................................. 4.29
Figure 4.19 Over- and Underfrequency Element Logic .......................................................................... 4.30
Figure 4.20 Stop/Trip Logic .................................................................................................................... 4.34
Figure 4.21 Thermal Element Lockout Logic .........................................................................................4.35
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