Performing PI control, External connection | Toshiba VF-nC1 instruction

E6581090

6.11Performing PI control

H : PI control

H : Proportional (P) gain

H : Integral (I) gain

• Function

These parameters are used to perform various kinds of process control, such as keeping the air quantity, flow rate or pressure constant by inputting feedback signals (4~20mA, 0~10V) from a detector.

[Parameter setting]

Title	Function	Adjustment range	Default setting
H	PI control	0: Disabled, 1: Enabled	0
H	Proportional (P) gain	0.01～100.0	0.30
H	Integral (I) gain	0.01～100.0	0.20

1) External connection

R/L1	U/T1
S/L2	V/T2	M
T/L3	W/T3

	③Preset speed	S1	P
	setting	S1	P
	setting	S2	①Potentiometer setting
		S2	①Potentiometer setting
		･
		･ ②Panel input setting
		VI/S3
		CC

6

Pressure

gauge

Feedback signal: 4~20mA, 0~10V

2) Types of PI control interfaces

The following combinations of process quantity data (frequency setting) and feedback data can be entered for PI control.

Process quantity input data (frequency setting)		Feedback input data
Setting mode	Frequency setting mode	External analog input
	HOQF	H: 0 (voltage input)
①Internal potentiometer setting		①VI/S3 (DC: 0~10V)
②Panel input setting		H:1 (current input)
③Preset speed setting	or	②VI/S3 (DC: 4~20mA)

Note: When the PI control function is enabled (H: 1), the VI/S3 terminal is used exclusively as a feedback signal input terminal.

Note: Do not set Frequency setting mode (HOQF) parameter to 0 if VI/S3 terminal is not used as contact input.

If all terminals for preset speed are off, a speed command other than the preset speed

3) Setting the PI control parameter

Set the extended parameter H (PI control) to (enabled).

(1)It is recommended to set the parameters CEE (acceleration time) and FGE (deceleration time) to as small values as possible.

(2)If there is a need to limit the output frequency, set it with the parameters WN (upper limit frequency) and NN (lower limit frequency). When process quantities are set from the operation panel, their adjustment ranges are limited by the settings of WN (upper limit frequency) and NN (lower limit frequency).

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Toshiba VF-nC1 instruction manual Performing PI control, External connection, Types of PI control interfaces

Contents

Industrial Inverter Limits in purpose Safety precautions General operation Wiring Transportation ‚ Installation Operations When retry function is selected inverter Attach warning labels ― Contents ― 10.1 Contents of the product code Read firstCheck purchased product Operation keypad panel Name and function of each part Front panel Self-up terminal block VFNC1-2001P～2007P VFNC1-2015P～2022P VFNC1S-1007P VFNC1S-2015P～2022P Same type of terminal board is provided for all models Control circuit terminal block Motors Inverters What to do about leak current DisposalLeakage current from the inverter main unit Effects of leakage current across ground Remedies Affects of leakage current across lines Examples of unapplicable chemicals and solvents Installation Installation environment Resistor Installation location How to install VFNC1 VFNC1S Installing more than one unit in a cabinet Connection Wiring Control and main power supplyStandard connections Preventing radio noise VF-nC1 Standard connection diagram When using V1/S3 terminal as a logic input terminal H DC reactor ＊ DCL option P0 ＊4 DC reactor＊5 Description of terminals Power supply and motor connectionsMain circuit terminals Connections with peripheral equipment VI/S3 Control circuit terminals sink logic common CC OUT Sink logic negative common/source logic positive commonFLA FLB Switching the input terminal logic between sink and source Simple operation Simple operation of the VF-nC1 SettingRun / stop Frequency Short F and CC terminals run forward RUN Motor starts Motor stops slowdown stop Setting the frequency using external potentiometer Setting the frequency using the operation panel Hoqf Setting the frequency by serial communications Hoqf Setting the frequency using input voltageSetting the frequency using current input 4-20mA Basic VF-nC1 operations Setup parameters How to set parameters KP KV How to set a setup parameter Steps in key entry for basic parameters How to set the basic parameters Steps in key entry for extended parameters How to set extended parameters CWH HTH GPF Press the Enter key to display the setting of the parameter CEE ITW Parameters that cannot be changed while running Kpkv Returning all parameters to standard default setting Command mode selection Selecting an operation modeFrequency setting mode selection Settings Function Meter setting and adjustment Adjusting the meter in inverter stop state Adjustment scale with meter adjustment HO parameterFM/OUT Houn Standard default setting Selecting forward and reverse runs operation panel only Setting acceleration/deceleration timeHT Forward/reverse selection Operation panel CEE Acceleration time 1 s FGE Deceleration time 1 s Maximum frequency Parameter settingUpper limit and lower limit frequencies HJ Maximum frequency Hz Selecting control mode Base frequencyXN Base frequency 1 Hz XD Setting the electronic thermal Setting of motor electronic thermal protection level 1 VJTExplanation of terms Using a VF motor motor for use with inverter Inverter over load characteristicsSetting the motor electronic thermal protection level 1 VJT Setting method Run/stop Preset speed operation speeds in 15 stepsPreset speed frequency setting Motor 150%-overload time limit H Eoqf Using other speed commands with preset speed command Output terminal setting Output signal-related parametersExtended parameters FM/OUT terminal functions selection OFF Parameter for specifying a frequency Parameters related to terminal function selection Connection method Setting of contact input terminal function Jog run Switching between control logics Sink/Source selection Setting of output terminal functions Basic parameters Setting of switching terminals40MCHG OFF Setting frequency command characteristics Analog signals for frequency setting Adjustment of 0~10Vdc voltage input Adjustment of 4~20mAdc current input 0 voltage input Operation frequency Starting frequency Starting frequency setting Hz DC braking ～ H Preset speed operation frequencies 8 to 15 Hz Preset speed operation frequencies 8 toPWM carrier frequency Jump frequency Hz Jump width Hz During restart operation, the message TVT is displayed Trip-less intensification Application to a crane or hoist Start of motor during coasting Motor speed search function Inverter, motor and machine ・QEN ・QEC・GRJQ ・GTT Performing PI control Setting the PI control parameterExternal connection Types of PI control interfaces Adjusting an analog command voltage Adjusting the PI control gain level Optimizing control characteristics Improving torque and speed characteristics Switching between acceleration and deceleration 2 switching frequency Acceleration/deceleration Protection functions Current stall setting Stall prevention level External trip stop by means of a terminal ①Press the Stop key Gqhh will blink Emergency stop by means of the operation panel Function FM/OUT terminal selection 1 12 OT over-torque detection Undervoltage trip Under voltage trip selection Canceling the setting Setting methodsOperation panel parameters Analog input disconnection detection Communication function common serial Changing the standard monitoring item Selection of monitor display selection Setting up the communications function 16.1 Using RS232C/RS485 conversion unitsData transmission specifications Communications parameters Common serial options Free notes Free notes Variety of operation Setting the operation frequency RSS4 Setting the operation mode Status monitor mode Setting procedure eg. operation at 60HzMonitoring the operation status Key to change items displayed in the status monitor mode Display of trip information Example of call-up of trip information ⇔ Compliance with CE Marking Taking measures to satisfy the CE / UL / CSAAbstract EMC directive 89/336/EEC Compliance with EMC directive Model, noise filter inside 【Ex. Countermeasure main circuit wiring】 EMFA2006Z Models without EMI filtersEMFA2015Z EMFAS2011Z 【Operating with external signals】【Apply if needed】【Accessories for countermeasure】 Compliance with UL Standard and CSA Standard Compliance with InstallationCompliance with Low voltage directive Compliance with Connection AIC Motor thermal protection Peripheral devices Selection of wiring materials and devices THR Selection of wiring devices Installation of an overload relay Installation of a magnetic contactorMagnetic contactor in the primary circuit Magnetic contactor in the secondary circuit 11.1 User parameters Table of parameters and data11.2 Basic parameters NN－WN QNO VJTUT NNWN Extended parameters Input/output parametersLOW NN-WN Frequency parameters Torque boost parameters Operation mode parameters Protection parameters Acceleration/deceleration time parameters Factory setting parameter Operation panel parametersCommunication parameters Default settings by inverter rating Table of input terminal functions +SS2+AD2 +SS1+AD2+SS3+AD2 +SS4+AD2 Table of output terminal functions Order of precedence of combined functions Specifications Models and their standard specificationsStandard specifications Self-cooling Forced LED External dimensions/weights External dimensions/weightsExternal dimensions Trip causes/warnings and remedies CEE QERFGE QER GRJ GRJ QHH CPUOqhh TVT Uvqr UQUK Restoring the inverter from a trip YES If the motor does not run while no trip message is displayed How to determine the causes of other problems Inspection and maintenance Regular inspectionCheck points 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 2004-10