Multilin 469 Motor Management Relay ... - GE Digital Energy

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t τ TCused ( TCused_start – TCused_end) e ⁄ – = ( ) + TCused_end TC used_end CHAPTER 5: SETTINGS where: TCused = thermal capacity used TCused_start = TCused value caused by overload condition TCused_end = TCused value dictated by the hot/cold safe stall ratio when the motor is running (= 0 when the motor is stopped) t = time in minutes τ = Cool Time Constant (running or stopped) Ieq = equivalent motor heating current ol_pkp = overload pickup settings as a multiple of FLA hot / cold = hot/cold safe stall ratio Thermal Capacity Used Thermal Capacity Used 100 75 50 25 0 0 30 60 90 120 150 180 Time in Minutes 100 75 50 25 Cool Time Constant= 15min TCused_start= 85% Hot/Cold Ratio= 80% Ieq/Overload Pickup= 80% 80% LOAD Cool Time Constant= 30min TCused_start= 85% Hot/Cold Ratio= 80% Motor Stopped after running Rated Load TCused_end= 0% 0 0 30 60 90 120 150 180 Time in Minutes MOTOR STOPPED Hot/Cold Safe Stall Ratio Ieq = ---------------- 1– --------hot × 100% ol_pkp cold FIGURE 5–15: Thermal Model Cooling (EQ 5.5) (EQ 5.6) 0 0 30 60 90 Time in Minutes 120 150 180 808705A2.CDR The motor manufacturer may provide thermal limit information for a hot/cold motor. The 469 thermal model adapts for these conditions if the HOT/COLD SAFE STALL RATIO settings is programmed. This settings value dictates the level of thermal capacity used the relay will settle at for current levels below the OVERLOAD PICKUP LEVEL. When the motor is running 5–56 469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL Thermal Capacity Used Thermal Capacity Used 100 75 50 25 100 75 50 25 Cool Time Constant= 15min TCused_start= 85% Hot/Cold Ratio= 80% Ieq/Overload Pickup= 100% 100% LOAD Cool Time Constant= 30min TCused_start= 100% Hot/Cold Ratio= 80% Motor Overload TCused_end= 0% 0 0 30 60 90 120 150 180 Time in Minutes MOTOR TRIPPED
CHAPTER 5: SETTINGS at a level that is below the OVERLOAD PICKUP LEVEL, the THERMAL CAPACITY USED register will rise or fall to a value based on the average phase current and the HOT/COLD SAFE STALL RATIO settings. The THERMAL CAPACITY USED will either rise at a fixed rate of 5% per minute or fall as dictated by the running cool time constant. where: TC used_end = THERMAL CAPACITY USED if I per_unit remains steady state I eq = equivalent motor heating current hot / cold = HOT/COLD SAFE STALL RATIO settings (EQ 5.7) The HOT/COLD SAFE STALL RATIO may be determined from the thermal limit curves if provided or the hot and cold safe stall times. Simply divide the hot safe stall time by the cold safe stall time. If hot and cold times are not provided, there can be no differentiation and the HOT/COLD SAFE STALL RATIO should be entered as “1.00”. RTD Bias The 469 thermal replica operates as a complete and independent model. However, the thermal overload curves are based solely on measured current, assuming normal 40°C ambient and normal motor cooling. If the ambient temperature is unusually high, or motor cooling is blocked, the motor temperature will increase. If the motor stator has embedded RTDs, the RTD bias feature should be used to correct the thermal model. The RTD bias feature is a two-part curve, constructed using 3 points. If the maximum stator RTD temperature is below the RTD BIAS MINIMUM settings (typically 40°C), no biasing occurs. If the maximum stator RTD temperature is above the RTD BIAS MAXIMUM (typically at the stator insulation rating or slightly higher), then the thermal memory is fully biased and THERMAL CAPACITY USED is forced to “100%”. At values between the maximum and minimum, the THERMAL CAPACITY USED created by the overload curve and the thermal model is compared to the RTD Bias thermal capacity used from the RTD Bias curve. If the RTD Bias thermal capacity used value is higher, then that value is used from that point onward. The RTD BIAS CENTER POINT should be set at the rated motor running temperature. The 469 automatically determines the THERMAL CAPACITY USED value for the center point using the HOT/COLD SAFE STALL RATIO settings. At < RTD_Bias_Center temperature, At > RTD_Bias_Center temperature, TCused_end = Ieq × 1– --------hot × 100% cold TCused at RBC = ( 1– hot⁄ cold) × 100% Tactual – Tmin RTD_Bias_TCused = ------------------------------ × TC Tcenter – T used at RBC min Tactual – Tcenter RTD_Bias_TCused = ----------------------------------- × ( 100 – TC Tmax – T used at RBC) + TCused at RBC center where: RTD_Bias_TC used = TC used due to hottest stator RTD T actual = current temperature of the hottest stator RTD T min = RTD Bias minimum settings, T center = RTD Bias center settings T max = RTD Bias maximum settings TC used at RBC = TC used defined by the HOT/COLD SAFE STALL RATIO settings (EQ 5.8) (EQ 5.9) (EQ 5.10) 469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL 5–57
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Software Revision: 5.1x Manual P/N:
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TOC TABLE OF CONTENTS Table of Cont
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TOC TABLE OF CONTENTS LOADING NEW F
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TOC TABLE OF CONTENTS LAST TRIP DAT
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Digital Energy Multilin 1.1 Importa
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CHAPTER 1: GETTING STARTED 1.2 Usin
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CHAPTER 1: GETTING STARTED To enter
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CHAPTER 1: GETTING STARTED Press t
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CHAPTER 1: GETTING STARTED 1.3 Chan
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CHAPTER 1: GETTING STARTED 1.3.4 En
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CHAPTER 1: GETTING STARTED SETTING
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CHAPTER 1: GETTING STARTED 1.3.5 Ou
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CHAPTER 1: GETTING STARTED 1.4 Appl
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CHAPTER 1: GETTING STARTED To begin
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CHAPTER 1: GETTING STARTED FIGURE 1
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CHAPTER 1: GETTING STARTED • Powe
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CHAPTER 1: GETTING STARTED • RTDs
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CHAPTER 1: GETTING STARTED 469 Moto
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CHAPTER 1: GETTING STARTED • Star
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CHAPTER 1: GETTING STARTED For curr
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CHAPTER 1: GETTING STARTED 1.4.6 S5
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CHAPTER 1: GETTING STARTED 1.4.8 S7
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CHAPTER 1: GETTING STARTED if the m
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2.1 Overview Digital Energy Multili
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CHAPTER 2: INTRODUCTION 51 Overload
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CHAPTER 2: INTRODUCTION 2.1.3 Order
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CHAPTER 2: INTRODUCTION 2.2.2 Outpu
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CHAPTER 2: INTRODUCTION Timing accu
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CHAPTER 2: INTRODUCTION 2.2.4 Digit
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CHAPTER 2: INTRODUCTION Note 2.2.6
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CHAPTER 2: INTRODUCTION 2.2.10 Cert
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Digital Energy Multilin 3.1 Mechani
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CHAPTER 3: INSTALLATION 3.1.3 Insta
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CHAPTER 3: INSTALLATION 3.1.4 Unit
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CHAPTER 3: INSTALLATION 3.1.5 Ether
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CHAPTER 3: INSTALLATION 3.1.7 Termi
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CHAPTER 3: INSTALLATION 3.2 Electri
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CHAPTER 3: INSTALLATION 3.2.4 Curre
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CHAPTER 3: INSTALLATION FIGURE 3-15
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CHAPTER 3: INSTALLATION 3.2.5 Volta
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CHAPTER 3: INSTALLATION 3.2.7 Analo
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CHAPTER 3: INSTALLATION Hot Compens
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CHAPTER 3: INSTALLATION relays, bei
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CHAPTER 3: INSTALLATION 3.2.13 Diel
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CHAPTER 3: INSTALLATION 3.2.14 2-Sp
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Digital Energy Multilin 4.1 Facepla
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CHAPTER 4: INTERFACES 4.1.4 RS232 P
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CHAPTER 4: INTERFACES The MESSAGE
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CHAPTER 4: INTERFACES 4.1.7 Diagnos
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CHAPTER 4: INTERFACES 4.1.9 Flash M
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CHAPTER 4: INTERFACES 4.2.2 Hardwar
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CHAPTER 4: INTERFACES 4.2.3 Install
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CHAPTER 4: INTERFACES Click on Nex
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CHAPTER 4: INTERFACES Select “Se
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CHAPTER 4: INTERFACES 4.3.4 Connect
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CHAPTER 4: INTERFACES Note The fron
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CHAPTER 4: INTERFACES 4.4.3 File Su
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CHAPTER 4: INTERFACES Note The Open
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CHAPTER 4: INTERFACES Note For fut
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CHAPTER 4: INTERFACES Note Click F
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CHAPTER 4: INTERFACES Enter the ap
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CHAPTER 4: INTERFACES Click OK. Th
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CHAPTER 4: INTERFACES 4.5 Upgrading
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CHAPTER 4: INTERFACES Note Cycling
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CHAPTER 4: INTERFACES The waveform
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CHAPTER 4: INTERFACES The EnerVista
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CHAPTER 4: INTERFACES With EnerVist
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CHAPTER 4: INTERFACES 4.6.5 Event R
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CHAPTER 4: INTERFACES • Active al
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CHAPTER 4: INTERFACES 4.7 Using Ene
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CHAPTER 4: INTERFACES FIGURE 4-13:
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CHAPTER 5: SETTINGS SETTINGS [ MES
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Page 175 and 176: CHAPTER 5: SETTINGS Setting the INP
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Page 181 and 182: CHAPTER 5: SETTINGS 5.6.3 Overload
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CHAPTER 5: SETTINGS 5.15.2 Speed2 U
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CHAPTER 6: ACTUAL VALUES 6.1.2 Desc
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CHAPTER 6: ACTUAL VALUES 6.2.2 Moto
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CHAPTER 6: ACTUAL VALUES 6.2.4 Alar
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CHAPTER 6: ACTUAL VALUES 6.2.5 Star
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CHAPTER 6: ACTUAL VALUES 6.3 A2 Met
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CHAPTER 6: ACTUAL VALUES 6.3.3 Volt
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CHAPTER 6: ACTUAL VALUES 6.3.6 Dema
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CHAPTER 6: ACTUAL VALUES FIGURE 6-1
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CHAPTER 6: ACTUAL VALUES The ACTUAL
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CHAPTER 6: ACTUAL VALUES The EnerVi
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CHAPTER 6: ACTUAL VALUES When the r
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CHAPTER 6: ACTUAL VALUES Pressing t
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CHAPTER 6: ACTUAL VALUES 6.4 A3 Lea
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CHAPTER 6: ACTUAL VALUES 6.4.4 Anal
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CHAPTER 6: ACTUAL VALUES 6.5.2 Gene
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CHAPTER 6: ACTUAL VALUES 6.6 A5 Eve
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CHAPTER 6: ACTUAL VALUES Underpower
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CHAPTER 6: ACTUAL VALUES 6.8 Diagno
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CHAPTER 6: ACTUAL VALUES forgotten,
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CHAPTER 6: ACTUAL VALUES PASSCODE
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CHAPTER 7: TESTING 7.2 Hardware Fun
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CHAPTER 7: TESTING 7.2.4 GE Multili
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CHAPTER 7: TESTING APPLIED RESISTAN
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CHAPTER 7: TESTING ANALOG OUTPUT FO
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CHAPTER 7: TESTING 7.3 Additional F
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CHAPTER 7: TESTING Symmetrical comp
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Digital Energy Multilin 469 Motor M
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A: APPENDIX Once again, if the pola
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A: APPENDIX • Programming the STA
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A: APPENDIX HGF5C HGF8 808841A1 808
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A: APPENDIX 808712A1.CDR 469 MOTOR
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A: APPENDIX A.5 Change Notes A.5.1
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A: APPENDIX PAG E (A3) PAG E (A4) T
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CHAPTER I: Index Numerics 0 to 1mA
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CHAPTER I: B BAUD RATE setpoints ..
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CHAPTER I: pressure switch alarm ..
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CHAPTER I: analog current .........
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CHAPTER I: NAMEPLATE VOLTAGE.......
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CHAPTER I: POWER FACTOR setpoints .
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CHAPTER I: RTD BIAS curve .........
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CHAPTER I: see 5 START BLOCK RELAY
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CHAPTER I: U description...........
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Multilin 469 Motor Management Relay ... - GE Digital Energy

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