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The word “Unit” is also capitalized when it refers to an OMRON product, regardless of whether or not it appears in the proper name of the product. The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means “word”. Section 2 This section describes the wiring procedure and the accessories needed. Also includes an interconnection diagram. Caution 1) All the potentiometers of SYSDRIVE 3G3IV have been adjusted at the fac- tory. Do not change their settings unnecessarily. Lift the cabinet from the bottom. 1-4-1 Location Location of the equipment is important to achieve proper performance and normal operating life. With digital operator, the motor can be operated by wiring the main circuit only. (Terminal shows main circuit and control circuit) Important Use listed closed-loop connectors sized for the wire gauge involved. Connec- tors are to be installed using the correct crimp tool specified by the connector manufacturer. Recommended MCCBs are listed in the table below. When a ground fault interrupter is used, select the one with no influence for high frequency, and setting current should be 200mA or over and operating time, 0.1 s or over to prevent malfunction. After completing SYSDRIVE 3G3IV interconnections, be sure to check that connections are correct. Never use control circuit buzzer check. (1) Separation of control circuit leads and main circuit leads:. However, con- necting all the ground terminals of SYSDRIVE 3G3IV in parallel, and ground only one of SYSDRIVE 3G3IV to the ground pole is also permissible (Fig. If an operation must be performed while the motor si directly connected to the ma- chine, use great care to avoid any possible hazardous condition. Examples or POWER ON indications on the digital Indicating frequency operator command value PRGM Select the program mode using key. Selecting DRIVE mode enables the inverter to operate. PRGM mode enables the programs to be written in.http://www.sensi-leszno.pl/userfiles/3jh2e-service-manual.xml
Red lamp lights Red lamp lights Red lamp lights by external. Set frequency is displayed. (If no fault occurs, this display is given FREQUENCY REFERENCE immediately at power supply ON, in 4 digits.) VALUE DISPLAY. VALUE DISPLAY FREQUENCY REFERENCE Select a digit by key and set by key. RESET VALUE SET DATA SET VALUE WRITE-IN Depressing. PRGM MODE SELECTION DRIVE (DRIVE display is turned off.) DSPL is selected by key. OPERATION CONDITIONS SET Select a digit by key and set RESET key. PROG MODE SELECTION DRIVE (DRIVE display is turned off.) The display changes as follows every time key is DSPL depressed. Frequency set numbers are displayed. Data is displayed by depressing DATA key. ENTER (Setting prior to shipment: (3) Set required acceleration time by using key. It will function longer if it is kept clean, cool and dry, while observing the precautions listed in “Loca- tion”. Check for tightness of electrical connections, discoloration or other signs of overheating. Use the table below as the inspection guide. Before servicing, turn off AC main circuit power and be sure that CHARGE lamp is off. When an alarm is issued, the digital op- erator indicates the alarm for warning. If the error persists, replace the card.This circuit cannot be used for an application with frequent run-stop (repeating frequency: within 1 hour).Weight: 3-44 dia. CABLE ENTRY KNOCK OUT 15 lb (7kg) Note: To use the unit in panel,. Page numbers refer to the previous version. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Please see our Privacy Policy for more information. Update your browser for more security, comfort and the best experience for this site. Try Findchips PRO STOP Konsola operatorska z wywietlaczem LCD ( 3G3IV, przekanikow w pobliu falownika.ALARM indicator: Displays the operating status of the Inverter. RUN (green): Flashes when no RUN command is input during normal status.http://igoseating.com/files/3jh4e-service-manual-pdf.xml
Lights when a RUN command is input during normal status. Alarm (Red): Lights when an error occurs Proper use and handling of the product will, product been damaged in shipping. S Are any screws or bolts loose. USERa??S MANUAL SYSDRIVE 3G3MV, delivery, always check that the delivered product is the SYSDRIVE 3G3MV Inverter that you ordered. Should, using the SYSDRIVE Inverters and peripheral devices. This manual may include illustrations of the Digital Operator: Used to set parameters, perform various monitoring, and start and stop the Inverter. ALARM indicator: RUN indicator: Displays the operating status of the Inverter. Alarm (Red): Lights when an error occurs. Flashes when a warning occurs Proper use and handling of the product will, Checking the Product On delivery, always check that the delivered product is the SYSDRIVE 3G3MV Inverter, using the SYSDRIVE Inverters and peripheral devices. This manual may include illustrations of the, Features Overview Chapter 1 1-1 Function The high-function compact SYSDRIVE 3G3MV Proper use and handling of the product will, Precautions Observe the following precautions when using the SYSDRIVE Inverters and peripheral devices, delivered product is the SYSDRIVE 3G3MV Inverter that you ordered. Should you find any problems with the, New Features Chapter 1 Overview 1-1 Functions The multi-function compact SYSDRIVE 3G3MV SYSDRIVE RX Series Data display LED indicator Lit according to Meets the needs for higher line speed and multiple-product small-lot production. SYSDRIVE Inverter SYSDRIVE Inverter Encoder. This item ships in the original manufacturer's packaging with standard documentation. Code Number: 73600-D0021 Show More Description Show More Description Technical Specifications Manuals, Datasheets, Drivers, Links Omron Sysdrive 3G3IV Series Manual (pdf) Link to OMRON Website View It Live Request Buying used equipment doesn't always have to be a shot in the dark.http://www.drupalitalia.org/node/66088
We know there are plenty of differences when it comes to used equipment and quite often, choosing between different pieces is difficult, especially when the equipment is not sitting right in front of you. Well, what if you were able to see a piece of equipment before you purchased it. Not just a picture from the manufacturer's website, but the actual piece of equipment you would receive. You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment. It's like having the store come to you. InstraView Request Form To get started. 1. Fill in the request form below 2. We'll send you an email letting you know exactly when your piece of equipment will be available for viewing Item to Inspect: 76484-3 - OMRON 3G3IV-PA012 SYSDRIVE Replacement Board for the 3G3IV Inverter Error Please contact us to complete your request. Thank You! We will be contacting you shortly. SKF offers a full rangeCQM1H CPUs and Inner Boards programming manual.SYSDRIVE 3G3IV Series of Inverters. Developed through the latest custom LSI and control technologies, these GeneralAll models feature insulated gate bipolar transistors (IGBT) for greater performance, higher torque, and lower noise. And a large selection of software applications and special features ensures ease of operation. If advanced machine performance and digital functionality is what you are looking for, the SYSDRIVE 3G3IV is waiting for you. Innovation IGBT Employed as the Switching Element for Higher Torque, Lower Noise, and Smoother Operation. SYSDRIVE 3Is Concept Table of Contents Standard Specifications........... 14 Intelligence Special Features and Software Capabilities to Suit a Wide Array of Needs. The highspeed switching of the IGBT has changed the very concept of inverter control.A1SCAN3D.COM/images/3g3iv-manual.pdf
Precise waveform control coupled with the high performance of the IGBT provides numerous advantages such as quiet operation, high starting torque, smoother shaft rotation and improved reliability. Current Wave Example at 10 Hz As Quiet as Running with Commercial Power Employing our original asynchronous high-carrier technique for sine wave PWM control, we have succeeded in eliminating the motor noises that plagued conventional PWM inverters. Running noise has been reduced by approximately 20 dB as compared to conventional PWM inverters. This quiet operation assures a more comfortable working environment. This ensures maximum performance whenever it is needed. This tough, no-stall inverter won’t trip even if overloaded. High Torque Assured Even at Low Speeds TORQUE () 150 3G3IV 6 Hz PREVIOUS PWM INVERTER 3 Hz 100 ntlp:photo CONVENTIONAL PWM INVERTER 50 1 Hz PREVIOUS MODEL 3G3IV 0 IGBT. This allows maximum utilization of the driven machine’s speed range. Alarm contents are retained in memory even at power off. Output Frequency Motor Current Indication Example Indication Example ntlp:photo Simple Multi-step Operation Operation speed can be set by up to nine steps by switching four-contact input signals. Various sequence operations can also be easily set. FREQUENCY REFERENCE The versatility of the new fully-digital software inverter satisfies numerous needs and enables you to up-grade your machines. A broad function selection allows rapid and significant changes in your machine’s performance. Direct indication of motor current allows easy verification of loads. Input Signal ntlp:photo Input power can be checked by one-touch operation. The rectified value of input voltage can be read directly. Output Power Display Example ntlp:photo Should an error occur, the cause is indicated and kept in memory. Error history is retained for troubleshooting. Energy savings can be easily monitored with the output power display.
This assures continuous operation even under overload conditions. TORQUE INVERTER OUTPUT VOLTAGE Full-range, Fully Automatic Torque Boost Output Frequency and Motor Current Monitors A scaleable analog output for frequency or current measurement is provided as a standard. Changing the ammeter output is also possible by setting system constants. For applications requiring more feedback, an optional 3G3IV-PAO08 board allows three signals to be output. If two analog output signals are required, use option 3G3IV-PAO08 or 3G3IVPAO12. Slip compensation circuit reduces motor slip to less than 1. This speeds start-up and reduces down time for system tuning.Either 4 BCD digits (binary code decimal) or eight binary bits can be used (on-board option). Furthermore, an RS-232C interface also allows remote monitoring, setting, and alteration of system data from RS-232C-compatible devices. Motor torque increases up to 150 over full-speed range due current waveform correction by asynchronous PWM method and automatic torque compensation. 3G3IV TORQUE () Conventional Inverter Shortcomings 3 Hz 6 Hz 4.5 Hz 1.5 Hz 1 Hz PREVIOUS MODEL SPEED (rpm) Torque characteristics of 5HP (3.7 kW) IM driven by model 3G3IV-A2037-E Typical Problem: Cannot vary speeds of the excitation release type motor with a brake. 3G3IV solution: Easily starts motor with a brake. The brake can be securely tripped. 3G3IV V BRAKE RELEASING VOLTAGE IM VOLTAGE SETTING 0 MR OPERATION RANGE RESONANT FREQUENCY LOCK-OUT CIRCUIT The brake trip voltage can be controlled externally. Difficult to vary speeds of the vibrating type URAS motor. Inverter of one or two classes greater capacity is applied for the eccentric-weight-incorporating type motor. Automatic torque boost effectively solves the eccentric torque problem. Inverter of the same capacity as the motor can be used for cost-savings.Because of very low inductance of a high frequency motor, ripple current tends to be high and overcurrent may frequently occur.
To compensate for this, an inverter of one or two classes greater capacity and output AC reactor is normally used. 10 Original, asynchronous, high-carrier frequency, PWM technique improves the motor characteristics. This eliminates the need for an AC reactor to reduce ripple current. Current waveform example ntlp:photo F SYSDRIVE FEATURES SOLVE ON-SITE PRODUCTION PROBLEMS Conventional Inverter Shortcomings Motor speed control cannot be improved beyond the SYSDRIVE 3G3IV’s performance without using PG or TG feedback (closed-loop). Precisely calculates load from motor current and corrects slip. WITH SIMPLE SPEED CONTROL PREVIOUS MODEL SPEED (rpm) For precise slip correction by this function, motor rated current, no load current, and rated slip are required. Operation cannot continue after momentary power loss. LOAD () Continues operation during a momentary power loss of less than 2 seconds.Setting a shorter time that determined by motor torque and load WK2 (GD2) may cause acceleration failure resulting in OC or OL activation. Stall prevention during acceleration Automatically adjusts the acceleration rate according to the current of the accelerating motor to prevent stalling or overcurrent condition.Momentary overload condition during inverter operation causes pull-out condition, resulting in motor torque reduction operation failure due to overcurrent or overload protection activation. Stall prevention during operation If overloaded during operation, automatically reduces frequency. In this case, motor outputs the maximum torque. When the load returns to normal, frequency accelerates to the previous set value and operation continues.Select special functions from a multitude of possibilities to perfectly match your machine. Synchronize with the coasting motor Starts the inverter at the specified frequency, automatically detects the synchronization point, and leads the operation to the operation frequency. No speed detector is required.
It is no longer necessary to stop the motor before starting, the operation efficiency for the customer is greatly improved. YES Sn-15 to 18 DC injection braking before operation Blower, pump, etc.In these, the motor can be stopped by DC injection braking, and be restarted by the inverter. The operation is completely automatic. Automatic switching between commercial power source and inverter Switching of commercial power source to inverter or inverter to commercial power source is done without stopping the motor. The operation efficiency for the customer is improved. When the inverter size is decided by the starting capacity (as in the extruder), this function can be used to reduce the inverter capacity. When it reaches a constant speed, the output voltage is automatically reduced to the preset value. Mainly applied to reduce the vibration in precision machine tools. YES Sn-15 to 18 bn-09 Multi-step speed operation Transportation machine, etc. Schedule operation under fixed speed command and positioning stop Multi-stop operation can be set by setting the contact combinations, so the connection with PC becomes very easy. When combined with jog speed can also allow simple positioning. Necessary for switching operation of 2 machines with different functions by a single inverter. Also used in emergency stopping applications. YES Sn-15 to 18 bn-01, 02 bn-03, 04 3-wire sequence General Simple configuration of control circuit YES Sn-15 to 18 YES Sn-04 Sn-15 to 18 Operation can be accomplished using a momentary push-button switch. Fault trip retry operation Air conditioner, etc. Improvement of operation reliability When the inverter trips, it first begins to coast, and then it immediately is diagnosed by computer, resets automatically, and returns to the original operation speed by speed search operation. Up to 10 retry counts can be selected. Sn-04 Sn-15 to 18 Quick stop without braking resistor (DC injection braking stop) High-speed router, etc.
DC injection braking of induction motor DC injection braking is performed from top speed. The duty is 5 or less. Can generate 50 to 70 of the braking torque. Economic, because a braking resistor is not necessary. Has advantage of mounting in completely closed cabinets. Protection of machine Improvement of continuous operation reliability Torque limit The inverter can be switched to coasting or motor speed reducing mode as soon as it reaches a certain preset torque level. Machine (especially cutter) protection can be done without using special peripheral devices. When used in a blower application the operation frequency can be automatically reduced to the load balancing point, according to the overload condition, and prevent overload tripping. No peripheral operation units. The command signal bias and gain can also be set independently. Cn-14, 15 Prohibit setting of specific frequency (frequency jump control) General machines Prevent mechanical vibration in the equipment The motor simply passes through the preset speed, and continuous running cannot be done at this speed. This function is used to avoid the mechanical resonance point of the equipment. Cn-16, Cn-19 Carrier frequency setting General machines Lower noise, eliminates resonance The carrier frequency can be set to reduce the acoustic noise from the motor and machine system. Cn-20 Run signal General Motor with mechanical brake operation “Closed” during operation. “Open”during coasting to a stop. Can be used as interlock contact point during stop. YES Sn-20 to 22 Zero-speed signal Machine tools Zero-frequency interlock Can be used as tool exchange signal. YES Sn-20 to 22 Speed agreed signal Machine tools Command speed reach interlock The contact closes when inverter output frequency reaches the set value. Can be used as an interlock for lathes, etc. YES Sn-20 to 22 Excess torque signal Blower, cutter, extruder, etc.
Protection of machine, improvement of operation continuation reliability Works when “overtorque setting operation” is accomplished. Can be used as a torque limiter. YES Sn-07 Sn-20 to 22 Cn-26, 27 Low voltage signal General System protection for undervoltage This contact is “closed” only when tripped by low voltage. Can be used as power loss detection relay for the system power loss countermeasure. YES Sn-20 to 22 Free unintentionally speed agreed signal General Command speed agreed interlock The contact closes when the speed agrees at arbitrary frequency command. YES Cn-21, 22 Output frequency detection 1 General Gear change interlock etc. The contact closes at an arbitrary output frequency and above. YES Sn-20 to 22 Cn-21, 22 Output frequency detection 2 General Gear change interlock etc. The contact closes at an arbitrary output frequency and below. YES Sn-20 to 22 Cn-21, 22 Base block signal General Operation interlock, etc. Always “close” when the inverter output is off. YES Sn-20 to 22 Damping resistor protection General Preventive maintenance “Close” when an overheat of a built-in braking resistor or a braking transistor error is detected. YES Sn-11 Analog input signal General Operability Functions as supplementary frequency reference. YES Sn-19 Analog output signal General Monitor function enhancement Either a frequency meter or ammeter can be used. YES Sn-05 Analog input General Operability Enables external operation with high resolution instructions. Also enables normal and reverse operation using positive or negative voltage signals. Digital input General Operability Enables operation with 8-bit digital signals. (Two digit BCD or eight binary bits. Easily connects to NC or PC.) Sn-26 Analog output General Monitor function enhancement Monitors the output frequency, motor current, output voltage, and DC voltage. Sn-28 Digital output General Operation enhancement Indicates output frequency using a pulse counter. Indicates error through discrete output.
Sn-27 Option card is used. Sn-25 13 STANDARD SPECIFICATIONS Standard Specifications 200 to 230 V Inverter Model Max.Motor Overload Protection Electronic thermal overload relay Instantaneous Overcurrent Motor coasts to stop at approx. 200 rated current. Blown Fuse Protection Motor coasts to a stop by blown-fuse. Overload Motor coasts to a stop after 1 minute at 150 rated output current. Overvoltage Motor coasts to a stop if converter output voltage exceeds 400 V. Undervoltage Motor coasts to a stop if converter output voltage drops to 210 V or below.Motor Overload Protection Electronic thermal overload relay Instantaneous Overcurrent Motor coasts to stop at approx. 200 rated current. Blown Fuse Protection Motor coasts to a stop by blown-fuse. Overload Motor coasts to a stop after 1 minute at 150 rated output current.Conform to NEMA 1. Conform to IEC IP00. --- Available by removing the upper u er and d llower cover off enclosed l d type. Conform to NEMA 1. Conform to IEC IP00. --- ENCLOSURES Open Chassis Type (IEC IP00) Mounted in a customer’s enclosure. Constructed so that openings do not permit direct or inadvertent access to live parts by personnel. Enclosed Type (NEMA 1) Provides a clean, and ventilated environment within the enclosure. Front and rear panels are firmly secured (e.g. front, rear, right, left, top, bottom). Openings provided for ventilation, etc.Weight: 42 lb (19 kg) Approx. CABLE ENTRY KNOCK OUT LOWER COVER Approx. Weight: 22 lb (10 kg) Note: To use the unit in the panel, remove the upper and lower covers. GROUNDING MAIN CIRTERMINAL M8 CUIT TERMINAL M4 MAIN CIRCUIT TERMINAL M4 Approx. Four, M10 dia. mtg. holes 30 min. Control Digital terminal Operator M3.5 59 Control terminal 83 M4 Approx. CABLE ENTRY KNOCK OUT Note: To use the unit in the panel, remove the upper and lower covers. 5 to 10 HP (3.7 to 7.5 kW) (Model 3G3IV-A4037-j to A4075-j) Enclosed Wall-mounted Type Approx.
Weight: 70 lb (32 kg) 40 to 50 HP (30 to 37 kW) (Model 3G3IV-B4300-j to B4370-j) Open Chassis Type 4-0.236(M6) DIA MTG. HOLES 4-0.236(M6) DIA MTG. HOLES FACE PLATE COOLING FAN GROUNDING TERMINAL M4 MAIN CIRCUIT TERMINAL M4 LOWER COVER Approx. Weight: 22 lb (10 kg) THREE, 44DIA. Weight: 170 kg Digital Operator 440 440 310 950 100 Control circuit terminal M4 150.7 Six, M12 dia. mtg. holes 1094 298 575 55 Control circuit terminal M3.5 Cooling fan 139 150.7 400 HP (300 kW) (Model 3G3IV-B430K-E) Open Chassis Type 70 25 Digital 70 Operator 58.5 Main circuit Grounding terminal M16 terminal M8 25 150 min. 349 330 AIR 311.5 113 Control circuit terminal M4 Front cover 305-500 min. Weight: 420 kg Approx.Procure necessary rubber bushings separately. 23 DIGITAL OPERATOR FUNCTIONS Mode Display LED Red lamp lights in DRIVE mode and goes out in PRGM mode. Red lamp lights at FWD run. Red lamp lights at REV run. Red lamp lights when controlled by external terminal commands. REF: When frequency ref.Display Displays set value of each function or monitoring values such as frequency and output current. (5 digits) Mode Selection Key Depressing this key changes mode. (DRIVE or PRGM) Display Selection Key Depressing this key changes the display. See next page for explanation. Depressing the second time enters displayed data into memory. Numeral Change Key Changes numeral such as set values and constant signals.: Increment key: Decrement key Digit Selection Key Selects numerical digits. This key resets operation at faults. Run Command Key Run command key to operate by digital operator. Effective only in drive mode. STOP command is input. (Motor stops in either mode.) Red lamp lights by depressing STOP. Selects FWD or REV run. Effective only in DRIVE mode. While depressing this key, jog speed is selected. KEY OPERATION SET VALUE WRITE-IN Depressing DATA ENTER key to set values. (Stops for 2 sec.) PRGM mode PRGM DRIVE lamp goes on. DRIVE lamp goes off.
When the value is written without an error, End is displayed. When the value is written with an error, Err is displayed. Factory setting differs depending on main circuit transistors. Set in a range of 10 to 200 of inverter rated current. Motor rated current (Cn-09) is set as 100 level. All items shaded must be set before starting operation. 28 OPERATION MENU FREQUENCY REFERENCES An-jj These references are used during multi-speed operation. Set values of An-jj can be changed or read during running in DRIVE mode. The set unit at factory setting is 0.01 Hz. CONSTANTS TO CHANGE DURING RUNNING bn-jj Set values of bn-jj can be changed or read during running in DRIVE mode. When the lower limit is not 0, acceleration to that lower limit set point begins immediately when the start command is input. For a motor of another manufacturer, set the nameplate value of the motor. VOLTAGE Carrier frequency upper limit Carrier frequency lower limit Carrier frequency proportional gain Parameter to be set Cn-23 Cn-24 Cn-25 Factory Preset 15.0 kHz 15.0 kHz 0 Changing the carrier frequency reduces RFI noise and leakage current without increasing motor noise. Normally, no adjustment is necessary. Use this function when especially high starting torque is required. Inching REVERSE starts. Depressing the JOG ROTATION FREQUENCY key on the digital operator performs the same opera- JOG SIGNAL ON tion. FORWARD RUN TORQUE INCREASE TORQUE DECREASE ROTATION SIGNAL ON REVERSE RUN ROTATION SIGNAL TIME ON NORMAL FREQUENCY 31 SELECTING AND SETTING FUNCTIONS 9-step Speed Change Item name Motor Stall Prevention Function Parameter to be set Multi-speed frequency com- An-01 to 09 mand Multi-function command Sn-15 to 18 Run selection Sn-04 Multi-function analog input Sn-19 Factory Preset See p. 29 See p. 27 0011 00 Up to 9 steps of speeds can be set using signals from external terminals 5 to 8. This eliminate the need for an analog signal thereby enabling operation simplified external control.
FREQUENCY Cn-07 FREQUENCY Cn-10 Factory Preset 0.0 Hz 1.0 Hz SETTING FREQUENCY REF. TIME TIME CURRENT Built-in Braking Resistor Protection CURRENT Cn-11 Cn-11 Cn-12 TIME Cn-13 TIME Item name Parameter to be set Regenerative braking resis- Sn-11 tor protection Factory Preset 0000 Built-in braking resistors are protected by thermal simulation. When a built-in braking resistor is used, select xxx1 (protection effective). When an external braking resistor unit is used, set xxxx0, and protect the resistor unit with the built-in thermal relay. The thermal relay should be wired in series with the inverter run command or the external fault circuit. For motors of 2.2 kW capacity or below (of 200 V or 400 V class), the compensating time is 0.5 sec to 1 sec. If longer momentary power loss ride-thru is required, install back-up capacitor unit (option for small unit). Set “61” into any constant from Sn-15 to Sn-18. 61: Search function from max.Set “63” for any constant from Sn-15 to Sn-18. Up to 10 retry counts can be set for Cn-36. Overtorque Detection Function Item name Parameter Factory to be set Preset Overtorque detection level Cn-26 160 Overtorque detection time Cn-27 0.1 s Overtorque detection signal Sn-20 to 22 See p. 27 Overtorque detection selec- Sn-07 See p. 26 tion When excess load is placed on the machine, the increase in motor current is detected and alarm signal can be output. For the decrease shock at decel. Frequency command from f1 to f2 eliminates speed fluctuations caused by varying load. METER CALIBRATION RESISTOR: RV30YN 20SB 20k. Either external terminal 13 or 14 can be used. Terminal symbols: shows main circuit; shows control circuit. Multi-function analog output is for use on meters only, and not available for the feed back control system.
Inverter output is stopped when the main circuit DC voltage becomes lower than the low voltage detection level for 15 ms or longer longer, or about 2 seconds or longer if the momentary power loss rede-thru function is used. Detection level: Approximately 210 V or less for 200 V class and 420 V or less for 400 V class Control circuit low voltage The inverter output is shut-off when the control circuit voltage drops below the uu2 (UV2) low voltage level. Operation Main circuit soft charge contactor defective Overcurrent protection The inverter output is shut-off when no answer back received from the main circuit soft-start contactor.Overvoltage protection The inverter output is shut-off when the main circuit DC voltage becomes excessive because of regeneration energy caused by motor deceleration and negative load. Detection level: Approx. 800 V for input voltage set 400 V and above Approx. 700 V for input voltage set 400 V or less and approx. 400 V for 200 V class u (OV) Operation Fuse blown The inverter output is shut-off when the main circuit transistor fails. The fuse clears to prevent wiring from being damaged by the short-circuit current. Either a inverter duty constant-torque specialized motor or general-purpose motor can be selected. If more than one motor is drive, overload protection should be disabled. Use a thermal relay or thermal protector for each motor. l1 (OL1) Operation Inverter The inverter output is shut-off when the electronic thermal overload reaches or exceeds the inverse time limit of 112 of the inverter’s rated current occurs. Maximum rated overload: 150, 1 min. l2 (OL2) Operation Overtorque detection The motor operates according to a preset mode when the inverter output current exceeds the overtorque detection level. This function is used to protect the machine or to monitor the output torque. l3 (OL3) Operation Braking transistor fault Inverter output is shut-off when an error occurs in the braking transistor.