SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

More documents

Recommendations

Info

Chapter 6 Maintenance and Inspection 6.1 Precautions for Maintenance and Inspection ! WARNING - Before inspecting the inverter, be sure to turn off the power supply and wait for 10 minutes or more. Otherwise, you run the risk of electric shock. (Before inspection, confirm that the Charge lamp on the inverter is off and the DC voltage between terminals P and N is 45 V or less.) - Commit only a designated person to maintenance, inspection, and the replacement of parts. (Be sure to remove wristwatches and metal accessories, e.g., bracelets, before maintenance and inspection work and to use insulated tools for the work.) Otherwise, you run the risk of electric shock and injury. - Never modify the inverter. Otherwise, you run the risk of electric shock and injury. 6.1.1 Daily inspection Basically check your system during the inverter operation to confirm that: 1) the motor is operating according to the settings on the inverter, 2) the installation environment is normal, 3) the cooling system is normal, 4) no abnormal vibrations and noise are generated, 5) no equipment overheating and discoloration are found, and 6) there are no unusual smells. While the inverter is operating, measure the inverter input power voltage with a multimeter to confirm that: 1) the power supply voltage does not fluctuate often, and 2) the voltages between the power supply wires are balanced. 6.1.2 Cleaning Always keep the inverter clean. When cleaning the inverter, wipe off dirt and stains on the inverter surface lightly with a soft cloth dipped in a neutral detergent solution. Note: Do not use solvents such as acetone, benzene, toluene, and alcohol for cleaning. These solvents cause the inverter surface to dissolve or the coating on the surface to peel off. In particular, never use a detergent or alcohol to clean the monitor of the digital operator. 6.1.3 Periodic inspection Check those inverter sections and parts which are accessible only while the inverter is stopped and which should be inspected regularly. When you intend to carry out a periodic inspection, contact your local <strong>Hitachi</strong> Distributor. During a periodic inspection, perform the following: 1) Check that the cooling system is normal. Clean the air filter as needed. 2) Check the screws and bolts for tightness, and retighten them. Screws and bolts may have loosened because of vibrations and temperature changes. Check them carefully. 3) Check to ensure conductors and insulators are not corroded or damaged. 4) Measure the dielectric breakdown voltage of insulators. 5) Check the cooling fan, smoothing capacitors, and relays, and replace them if necessary. 6 - 1
Chapter 6 Maintenance and Inspection 6.2 Daily and Periodic Inspections Part to inspect General Main circuit Control and protective circuits Cooling system Display Motor Inspection item Environment Whole inverter Power supply voltage General check Connecting conductors and cables Terminal block Inverter circuit and converter circuit (including resistors) Smoothing capacitor Relay Operation Cooling fan Heat sink Monitor Meter General Insulation resistance Detail of inspection Check the ambient temperature, humidity, and dust. Check for abnormal vibrations and noise. Check that the main circuit voltage is normal. (1) Check the ground resistance between the main circuit and ground terminals with a megger. (2) Check screws and bolts for loosening. (3) Check each part for any trace of overheating. (1) Check the conductors for distortion. (2) Check the cable insulations for damage. Check the terminal blocks for damage. Check the resistance between terminals. (1) Check for liquid leak. ◦ (2) Check that the relief valve does not protrude or swell. (1) Check that no fluttering sound is generated during the relay operation. (2) Check the contacts for damage. (1) While performing a unit operation of the inverter, check the balance output voltage among the individual phases. (2) Carry out a sequential protection operation test, and check the protective and display circuits for any abnormality. (1) Check for abnormal vibrations and noise (2) Check the joints for loosening. Check for clogging. Inspection cycle Periodic Daily Annual Biennial ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ 6 - 2 Inspection method Criterion Test equipment See Section 2.1, "Installation." Check visually and by listening. Measure the voltage between the main circuit terminals R, S, and T. The ambient temperature must Thermometer, be within -10°C to +50°C without hygrometer, congelation. The ambient recorder humidity must be 90% RH or less without condensation. There must be no abnormality found. The measured voltage must be Tester, digital within the allowable tolerance for multimeter AC power voltage. Disconnect all input and output cables 500 VDC class from the inverter's main circuit terminal megger block, detach the control circuit terminal block from the inverter, and remove the jumper for switching the inverter's internal filter function. Subsequently, The measured ground resistance measure the insulation resistance must be 5MΩ or more. between the ground terminal and the jumper connecting all the following terminals: R, S, T, U, V, W, P, PD, N, RB, R0, and T0 Retighten loose screws and bolts. Check visually. Check visually Check visually Remove all cables from the inverter's main circuit terminal block. Use a tester (in 1Ω range mode) to measure the following: - Resistance between terminals R, S, and T and terminals P and N - Resistance between terminals U, V, and W and terminals P and N Check visually. Check by listening. Check visually. Measure the voltage between the cables connected to the main circuit terminals U, V, and W. There must be no abnormality found. There must be no abnormality found. There must be no abnormality found. There must be no abnormality found. See Section 6.5, "Method of Checking the Inverter and Converter Circuits." Standard operating life of power module(IGBT,IPM,Diode and Thyristor ) until replacement: 10 6 cycles of starting and stopping (*3) Analog tester There must be no abnormality Capacitance found. meter Target operating life until replacement: 10 years (*1) (*3) There must be no abnormality found. There must be no abnormality found. The inter-phase voltage balance must be as follows: 200 V class models: 4 V or less 400 V class models: 8 V or less Short-circuit or open the protective circuit outputs as a simulation. An error must be detected according to the sequence. Turn the fan manually during the inverter power-off status. Check visually. Check visually. (1) Check that all LEDs light up normally. ◦ Check visually. (2) Clean the monitor. ◦ Clean the monitor with a rag. Check that meter readings are normal. (1) Check for abnormal vibrations and noise. (2) Check for unusual smells. Check the ground resistance between all motor terminals and the ground terminal with a megger. ◦ ◦ ◦ Check the meter readings on the panel. Check vibrations and noise visually, by listening, and with physical senses. Check for any unusual smells caused by overheating or damage. The fan must rotate smoothly. There must be no abnormality found. Standard operating life until replacement: 10 years (*2) (*3) The heat sink must not be clogged. The LEDs must light up normally. The readings must meet the standard and control values. There must be no abnormality found. There must be no abnormality found. Digital multimeter, rectifier instrument, and voltmeter Voltmeter and ammeter Remove the cables from the 500 VDC class inverter's main circuit terminals U, V, megger and W, connect the motor wires (for ◦ three phases) with one another, and The measured ground resistance measure the ground resistance must be 5MΩ or more. between the motor wires and the ground terminal. *1 The operating life of the smoothing capacitor is under the influence of the ambient temperature. Refer to Section 6.6, "Smoothing-Capacitor Life Curve," as a standard for the operating life until replacement. *2 The operating life of the cooling fan varies depending on environmental conditions, including the ambient temperature and dust. Check the status of the cooling-fan operation during daily inspections. *3 The standard operating life (number of years or operation cycles) and the data described in Section 6.6, "Smoothing-Capacitor Life Curve," are based on the expected design life, but they do not indicate the guaranteed life of any parts. *4 When replacing to the capacitor stored for 3 years or longer, please have shakedown period as below. Apply 80% of rated voltage for 1 hour.
Page 1 and 2:
HITACHI INVERTER SJ700-2 SERIES INS
Page 3 and 4:
Safety Instructions Safety Instruct
Page 5 and 6:
Safety Instructions 3. Operation !
Page 7 and 8:
Safety Instructions Precautions Con
Page 9 and 10:
Safety Instructions Precautions Con
Page 11 and 12:
Safety Instructions 10. Distributio
Page 13 and 14:
Contents Chapter 1 Overview 1.1 Ins
Page 15 and 16:
Contents 4.2.30 Overload restrictio
Page 17 and 18:
Contents 4.3.15 Speed/position swit
Page 19:
Chapter 1 Overview This chapter des
Page 22 and 23:
Chapter 1 Overview 1.2 Method of In
Page 24:
Chapter 2 Installation and Wiring T
Page 27 and 28:
Chapter 2 Installation and Wiring 2
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Chapter 2 Installation and Wiring D
Page 35 and 36:
Chapter 2 Installation and Wiring S
Page 37 and 38:
Chapter 2 Installation and Wiring c
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Chapter 2 Installation and Wiring (
Page 45 and 46:
Page 47 and 48:
Chapter 2 Installation and Wiring (
Page 49:
Chapter 3 Operation This chapter de
Page 52 and 53:
Chapter 3 Operation You can operate
Page 54 and 55:
Chapter 3 Operation 3.2.2 Code disp
Page 56 and 57:
Chapter 3 Operation Key operation a
Page 58 and 59:
Chapter 3 Operation (3) Code/data d
Page 60 and 61:
Chapter 3 Operation 3.3 How To Make
Page 62 and 63:
Chapter 3 Operation ELB 3-phase pow
Page 65 and 66:
Chapter 4 Explanation of Functions
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Voltage across main circuit termina
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192: Chapter 4 Explanation of Functions
Page 230 and 231: Chapter 5 Error Codes 5.1 Error Cod
Page 232 and 233: Chapter 5 Error Codes Name Gate arr
Page 234 and 235: Chapter 5 Error Codes 5.1.2 Option
Page 236 and 237: Chapter 5 Error Codes 3) Error indi
Page 238 and 239: Chapter 5 Error Codes 5.1.3 Trip co
Page 240: Chapter 6 Maintenance and Inspectio
Page 245 and 246: Chapter 6 Maintenance and Inspectio
Page 247 and 248: Chapter 6 Maintenance and Inspectio
Page 250 and 251: Chapter 7 Specifications 7.1 Specif
Page 252 and 253: Chapter 7 Specifications (3) Common
Page 254 and 255: Chapter 7 Specifications SJ700-150
Page 256 and 257: Chapter 7 Specifications SJ700-750
Page 259 and 260: Chapter 8 List of Data Settings 8.1
Page 261 and 262: Chapter 8 List of Data Settings 8.4
Page 263 and 264: Chapter 8 List of Data Settings AVR
Page 265 and 266: Chapter 8 List of Data Settings Oth
Page 267 and 268: Chapter 8 List of Data Settings Cod
Page 277 and 278: Appendix Upgrading from the SJ300 S
Page 279 and 280: Index A B C a/b....................
Page 281 and 282: Index O P O........................
show all

SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?