Inverter overload characteristics | Toshiba VF-AS1 manual

E6581301

3)Inverter overload characteristics

Set to protect the inverter unit. Cannot be turned off by parameter setting.

The inverter has two overload detecting functions, which can be switched from one to another using parameter

(temperature detection).

[Parameter setting]

	Title	Function	Adjustment range	Default setting
		Temperature detection	:Standard (150%-60 sec.)
		Temperature detection	: Estimation of temperature
			: Estimation of temperature

If the inverter overload trip function () is activated frequently, this can be improved by adjusting the stall operation level downward or increasing the acceleration time or deceleration time .

■= (Standard)

Protection is given uniformly regardless of ambient temperature, as shown by the 150%-60 sec overload curve in the figure below.

Inverter overload !

time [s]"			Current		Inverter overload time [s]
			Current		Inverter overload time [s]
			[%]			(Outline data)
			[%]			(Outline data)
			111		2400
			120		240
			130		120
			140		80
			150		60
			165		2				5
			200		0.1				5
60
60
						Monitored output current [%]!
0!
0!		150%!
110%!		150%!		100%: Inverter rated			output
				100%: Inverter rated			output

!

Inverter overload protection characteristics

■= (Estimation of temperature)

This parameter adjusts automatically overload protection, predicting the inverter internal temperature rise. (diagonally shaded area in the figure below)

time [s]"

60

0!

110%! 150%!

Monitored output current [%]!

100%: Inverter rated output current!

Inverter overload protection characteristics

Note 1: If the load applied to the inverter exceeds 150% of its rated load or the operation frequency is less than 0.1Hz, the inverter may trip ( or ~) in a shorter time.

Note 2: The inverter is factory-set so that, if the inverter becomes overloaded, it will automatically reduce the carrier frequency to avoid an overload trip ( or ~). A reduction in carrier frequency causes an increase in noise from the motor, but this does not affect the performance of the inverter.

If you do not want the inverter to reduce the carrier frequency automatically, set the parameter

=.

Note 3: Overload detection level is variable by condition of output frequency and carrier frequency.

E-25

Image 95

Toshiba VF-AS1 instruction manual Inverter overload characteristics

Contents

New High-performance inverter Limits in purpose Safety precautions General Operation Transportation & installation Reference Wiring Operations When retry function is selected Maintenance and inspection II. Introduction Contents 14.4 13.113.2 14.3 25.1 24.124.2 24.3 36.5 36.236.3 36.4 12.1 10.610.6.1 10.6.2 Type Form Contents of the product codeCheck the product Explanation of the type and form written on the label Names and functions 1 Outside view Structure of the main body PRG lamp Mode key MON lampRS485 connector/cover RUN lamp M5 screw Switch Grounding terminal M5 screw Screw hole for EMC plateMain circuit terminal E6581301 VFAS1-4300PL, 4370PL VFAS1-4160KPC VFAS1-4110KPCVFAS1-4132KPC VFAS1-4500KPC For details on all terminal functions, refer to Section Control circuit terminal blockDetaching the cover Control circuit terminal block is common to all equipment E6581301 E6581301 Grounding capacitor switching method 200V! 18.5#22kW 400V! 22kW 200V/400V Class Small E6581301 Installing the DC reactor Operation in the low-speed area Comparisons with commercial power operationAdjusting the overload protection level Motors Low loads and low inertia loads Braking a motor when power supply is lostHigh-speed operation at and above 50Hz/60Hz rated frequency Method of lubricating load mechanisms Inverters Effects of leakage current across ground If power supply distortion is not negligibleDisposal Measure to take against leakage Current Remedies Affects of leakage current across supply linesAffects of leakage current by cable length Installation Installation environment Resistors Place far away from VF-AS1 Inverter How to install 6001Without top cover Standard installation Side-by-side installation4001Without top cover 5001Without top cover Output Ambient temperature ContinuousAmbient temperature 4001Without top cover 4001With top cover F631=0 With top cover Carrier frequency Ambient temperature4001With top cover 5001With top cover 6001Without top cover Current E6581301 Installing more than one unit in a cabinet Connection equipment Preventing radio noise Control and main power supplyWiring Between PO and PC Standard connections Standard connection diagram sink logic Standard connection diagram sink logic Standard connection diagram sink logic Standard connection diagram source logic Standard connection diagram source logic Standard connection diagram source logic Connection with peripheral equipment Power supply and motor connectionsDescription of terminals Main circuit terminals RR/S4 RES OUT2 PLCVI/I OUT1 FLC +SUFLA FLB 1Be sure to short across NO-CC Sink logicSource logic SOURCE! INT/PLC 3 RS485 communication connector Operations VF-AS1 has the following three setting/monitor modes Setting/monitor modes OFF Simplified operation of the VF-AS1Example of standard connection Mccb + VI/II Frequency setting+ RR/S4 CCA + RX CCA Setting the frequency using input voltage 0~10VdcSetting the frequency using input voltage 0~±10Vdc + VI/II CCA Press Key to change to Default settingPress the Enter key to display the first extended parameter Stop the motor Panel operationSet frequency Motor starts Press the Stop key again Selecting a stop mode with the operation panelExample of operation panel control Deceleration stop 1 Press the Stop key Quick mode Easy Searching and setting parameters Setting parameters in the selected quick mode How to set parameters Setting parameters in the standard setting mode Changed parameter search function Function Setting methodsHistory function History function Automatic acceleration/deceleration Setting acceleration/deceleration timeWhen load is small When load is large Automatic torque boost Manually setting acceleration/deceleration timeConstant torque characteristics default setting Increasing starting torque Increasing torque manually V/f constant control Automatic torque boost and V/f control mode selectionIf vector control cannot be programmed Automatically programmed functions and parameter set values Setting parameters by operating methodAutomatic function setting Frequency Voltage/current Setting on Default Command mode selection Selection of operation modeCommand mode selection Frequency setting mode selection Operation panel input VI/II inputRR/S4 input RX input Run/stop Press the RUN and Stop keys On the operation panel Preset speed operationSet this parameter at terminal board Any setting is valid Standby connection of terminals ST and CC Run/stop ON/OFF of terminals F-CC/R-CC Or 40~20mAdc Control mode selection Selecting control modeConstant torque characteristics Normal way of use Output frequency Hz Base frequency Torque boost rate is adjusted automaticallyDecreasing output voltage Motor constant must be set Setting of V/f control mode selection = V/f 5-point setting Setting of V/f characteristic arbitrarily VF5 VF4 VF3 VF1 VF2 Setting of V/f control mode selection = PM controlBase frequency voltage 5-point setting Output voltage Operating a permanent magnet motor Precautions on automatic torque boost mode or vector control Base frequency Base frequency voltage Manual torque boost-increasing torque boost at low speedsBase frequency Manual torque boost Upper limit frequency Lower limit frequency Maximum frequencyUpper limit and lower limit frequencies Maximum frequency Preset speed operation speeds in 15 steps Setting frequency command characteristics RR/S4 RR/S4-CC ST-CC OFF Forward/reverse run selection Selecting forward and reverse runs operation panel only Explanation of terms Setting the electronic thermal = motor rated current/inverter output rated current x Using a VF motor motor for use with inverterFirst basic parameter History function is displayed Press either the key or the key to change the parameter to 01Hz *1 No less than Motor overload Setting the motor overload starting levelMotor 150%-overload time limit Operation frequency Frequency Inverter overload characteristics Current/voltage unit selection Changing the display unit % to a ampere/V volt VF-AS1 Meter setting and adjustment Regenerative braking resistance overload factor OLr data Display returns to its original indications Adjustment is complete. and the frequency are displayedPress either Key to select Press the Enter key to display the operation frequency Display mode. When standard monitor display selection = Select the AM terminal meter adjustment by pressing the keyPress the Enter key to switch to the data display mode Return the parameter setting to output current display PWM carrier frequency Gradient bias adjustment of analog monitor output Refer to .4.4, Current reduction curve Below 130% Trip-less intensification Operation and application of the auto-restart function Synchronized acceleration/deceleration signal An example of setting when = Dynamic regenerative braking For abrupt motor stop External braking resistor with a thermal fuse optional Connecting an external braking resistor optional When a using braking resistor without thermal fuse Capacities of 400V-200kW or more VFAS1-4280KPC Selection of braking resistor option and braking unit Minimum resistance of connectable braking resistors 60Hz default setting = Standard default settingFactory default setting 50Hz default setting = Acceleration/deceleration time setting 0.1 to 6000 sec. = Default setting =Reset of user-defined parameters = Acceleration/deceleration time setting 0.01 to 600.0 sec. = Key to search for parameters in reverse direction Automatic edit functionPress Key to select Key to change the parameter displayed. Press Easy key function Quick mode/standard setting mode switching function =Quick mode Standard setting mode Peak hold function = Shortcut key function =Operation panel/remote key function = Output terminal setting Low-speed signal Low-speed signal output frequencyLow-speed signal output Inverted Connection diagram SW1 set to sink logic P24 OUT1 or OUT2 Parameter setting of output terminal selection Parameter setting of frequency and detection band Reverse run signal Input signal selectionParameter setting Forward run signal Command from the terminal board Valid command CC Jog run Output frequency Hz Set frequency Panel key Forward runST-CC Modifying input terminal functions Setting of contact input terminal functionTerminal function selection Connection method 1 a-contact input PLC Servo lock status Manual torque boost Base frequency Thermal protection level Using the V/f adjustment function Adjustment rateBasic parameters Parameters selected S1-CC S2-CC Switching with input terminal board = V/f 5-point setting5-point setting VF3 frequency 5-point setting VF3 voltage Priority is given to Command set With Automatic switching by means of switching frequencies = Operation frequency DC braking time Forward/reverse DC braking priority control DC brakingDC braking DC braking start frequency DC braking current ~ ~ Motor shaft fixing control ~ ~ E6581301 Time limit for lower-limit frequency operation Operation signal F-CC SW1 set to sink logic Time s ST-CC S3-CC Jog run mode Status monitor mode Adjustment with pulse signals Parameter-setting example «Sample sequence diagram 2 Adjustment with pulse signals» Jumping width Jump frequency jumping resonant frequenciesJump frequency Preset speed operation frequencies 8 to Preset speed operation frequenciesPreset speed operation frequency 8 to Trip-less intensification Output Frequency Overvoltage stall protection Voltage Supply voltage correction Output voltage adjustment Output voltage waveform selection Drooping controlReverse run prohibition Reverse run prohibition selection Gain1 Creeping time Hoisting torque bias input Light-load high-speed operation functionBraking function Creepinjg frequency Reverse run Forward run Acceleration/deceleration suspend function Stall control Commercial power/inverter switching Timing chart example Differential D gain PID control switching Process lower limitPID control feedback control signal selection PID control CCA VI/II External connectionTypes of PID control interface Process value DC0~10V RR/S4 Low proportional gain Setting the PID controlAdjust PID control gain Fast response Adjusting the analog command voltage and current Stop position control function Setting motor constants Not set correctly. Check their SettingsYES Base frequency Voltage Rated capacity Setting auto-tuning Examples of setting the motor constants Exciting strengthening coefficient Stall prevention factor Speed limit torque=0 band Torque controlReference selection E6581301 Torque limit Power Regenerative Running VI/II-CCA RX-CCA RR/S4 -CCA, VI/II-CCA10V +10V After the mechanical brake is released Torque is h eld at a limit level evenTorque limit level Stall prevention function Power running stall continuous trip detection timeRegenerative braking stall prevention mode selection Stall prevention control switching Max output voltage modulation rate Current and speed control adjustment Operating a synchronous motor Fine adjustment of frequency setting signal Deceleration time Acceleration time Acceleration S-pattern lower limit adjustmentDeceleration S-pattern lower limit adjustment Acceleration/deceleration Acceleration/deceleration switching signal Set frequency Pattern operation E6581301 Function selection Preset speed mode~ Preset speed operation modes Pattern operation finished OFF signal Protection functions Setting of stall prevention level Stall prevention level Emergency stop Emergency DC braking control time Output phase failure detection mode selection Output phase failure detection Function OFF ON! OFF Cooling fan control selection Cumulative operation time alarm setting Braking answer waiting time Rush current suppression relay activation time 33.18 VI/II analog input wire breakage detection level Refer to 5.19 for details DC voltage Rush current suppression relay Ground fault detection selection Disconnection detection of remote keypad Override Ex.2 = VI/II input, = disabled Ex.1 = VI/II input, = disabled Adjustment parameters Large gain FM terminals setting exampleSW2 0-10V/0-20mA side Operation panel parameter Resetting method Monitor-displayed or parameter-set frequency Value displayed An example of setting When is , and is When is not , and is disabledWhen is not , and is not Example of setting Trace selection Trace cycle Trace data Tracing functions To acquire trace data at the time of triggering = Acquisition of trace data Relationship between pointer and data Integrating wattmeterTrace data communication number Communication function Send waiting time 2-wire RS485 TOSHIBA, Modbus Wire RS485No action Common to 2-wire RS485 and 4-wire Alarm Alarm No action E6581301 Response data INV → host ~ ~ Data Host →!INV Wiring Data Master → Slave Toshiba Modbus Alarm No action Trip E6581301 Input function target 11~ My function selection My functionTraverse function DEV002Z ETB003ZETB004Z VEC007Z Case of control panel operation the frequency Case of control panel operation command inputExternal operation LI1~LI8 Input terminal function selection RR/S4 Preset speedFunctions of input terminals in case of sink logic COM Inverter Input terminal Programmable controller Acceleration/deceleration3, V/f 3, torque limit Acceleration/deceleration2, V/f 2, torque limit OUT1 OUT2 Output terminal function Selection Low-speed signalFunctions of output terminals incase of sink logic FLA FLB FLC E6581301 PROFIBUS/DeviceNet/CC Stop Analog input filter Setup of input terminal operation timeResponse time setting Setup of external speed command analog signal Frequency meter Setup by analog input signals RR/S4 terminalRunning frequency characteristic Connection and calibration ~10Vdc Setup by analog input signals VI/II terminal Run/stop setup Setup by analog input signals RX terminal Monitoring the operation status Screen composition in the status monitor mode LED Setting procedure EX. operation at 60 HzMonitoring the status Status monitor under normal conditions OFF No. FE07 Input terminal informationData bit of communication No. FE06 Press this key to return to past trip Display of detailed information on a past tripUnit times Changing status monitor function MON2 MON1 FD86 Default Item displayed Marking Unit PanelFE56 01% FD85 COUNT1 Trip code display Display of trip information Error code Description Communication/Error code Displayed.Forward run, Reverse run Direction of rotation when the trip occurred isMonitor display at tripping FE01 Direction of rotation Mode Display of alarm, pre-alarm, etc EMC directive How to cope with the CE standard Models with a built-in EMC filter Measures to satisfy the EMC directive Ex. Countermeasure inverter wiring E6581301 VFAS1-4355KPC~ 100 EMF3-4600J × VFAS1-4160KPC~ 100 EMF3-4600J OUT2, CC Power supply wiring Shielded cablessOperation with external signals Measures to be taken to satisfy the low-voltage directive Accessories for countermeasureLow-voltage directive Measures to be taken to satisfy the UL/CSA standards Applicable Inverter model AIC, Fuse and Wire sizes VFAS1-4400KPC 10.1 ! Selection of wiring materials and devicesAWG VFAS1-4355KPC MCC Voltage Applicable Without Inverter model Reactor Selection of wiring equipmentMagnetic contactor Input currentA Magnetic contactor in the secondary circuit Installation of a magnetic contactorInstallation of an overload relay Magnetic contactor in the primary circuit ACL Application and functions of options E6581301 DCL GTR7 Supply backup CPS002Z Suppression Supply Filter *4 Backup Functions of Add-on type options Table of optional devices PG feedback option 6 7 Model VEC004Z, VEC005Z, VEC006Z Functions of Plug-in type options How to install MCR-2550×5 parallel Required No required Connection of a DC power supply and other electric unitsConnection of a single-phase 200V power supply When using the inverter along with a DC power supply VFAS1 Power consumed by the fansConnecting fans for a separate power supply VFAS1-4200KPC4280KPC VFAS1-4355KPC, 4400KPC, 4500KPC Speed Torque Control Reference Vector control Title Cation Function Adjustment range Speed Torque Reference Basic parameter 2/4 Communi E6581301 0304 Dynamic braking Setting Braking ST-off Overload detect FunctionDisabled Selection Basic parameter 4/4 Communi Setting unit Default Write during Terminal function selection Communi 0110 Always on function selection ~155 *1 Disabled 0111~155 *1 Disabled 0112 Speed Torque Reference Default Speed Torque Reference Cation F 5-point setting CommuniVector control Title Function Adjustment range E6581301 DC braking Communi Default Speed 01~600.0kW 01/0.01 Disabled 0310 Tripless intensification setup 2/2 Communi0307 Selection Disabled Correction of supply voltage 0308 Dynamic braking resistance ~1000 0.1 Disabled 0309 4enabled Enabled Functions for lift 2/2 Communi Process increasing rate speed type Speed Torque Motor constant Communi E6581301 Torque limit 2/2 Communi E6581301 Acceleration/deceleration 2 2/2 Communi E6581301 Dhcp Bootp E6581301 Protection functions 2/2 Communi 55~100% Disabled Cation Function Adjustment range Meter output 2/2 Communi E6581301 Operation panel parameters 2/3 Communi 0756 Quick registration parameter ~999 *1 600 Enabled Control 0751 Quick registration parameter ~999 *1 Enabled0752 Quick registration parameter ~999 *1 Enabled 0753 0754 0755 Quick registration parameter ~999 *1 Enabled 1MODBUS Enabled RS485Communication function 1/4 0TOSHIBA 0814 Point 2 frequency ~ Hz 0.01 0813 Point 2 setting ~100%0812 Point 1 frequency ~ Hz 0.01 0000~ Enabled 0843 Vector control Title Communi Function Adjustment rangeEnabled Wire RS485 0000~ Enabled 0842 E6581301 My function 1/5 Communi 22CLRN 2STN4ANDN 6ORN My function 3/5 Communi 1VI/II My function 5/5 Communi Control 0Disabled Communi Control Ion 01Hz FD17 FE17 Function Communicat Trip retention 01% FE56 FD85 E6581301 E6581301 LOW 126 127 120 121122 123 124 125 248 249 242 243244 245 246 247 Torque Base Acc/dec Dynamic Standard specifications small/medium capacity types Models and their standard specifications However, this is unnecessary for DC input specifications Standard specifications large capacity types Voltage/frequency Common specification LED Outside dimensions and weight Fig. a Outline drawing Fig. G Fig. K Fig. O Trip causes/warnings and remedies Before making a service call Trip information and remedies Input voltage fluctuates abnormally E6581301 CPU2 E6581301 E6581301 Method of resetting causes of trip If the motor does not run while no trip message is displayed More How to check other troubles Check points Regular inspection Check items Periodical inspection Standard replacement cycles of principal parts Replacement of expendable parts Keeping the inverter in storage Making a call for servicing Warranty Disposal of the inverter