Danfoss 176F7300, 176F7302, 176F7303, 176F7304, 176F7305 User Manual

...

VLT® MICRO

Danfoss can accept no responsibility for possible errors in catalogs, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

Table of Contents

Chapter 1 Introduction

Getting Started .................................................................................1

Receiving, Inspection, and Storage ................................................... 2

Nameplate Information ..................................................................... 2

General Technical Data .....................................................................3

Specifications ................................................................................... 6

External Parts and Labels ................................................................. 7

Chapter 2 Installation and Wiring

Installation Requirements .................................................................. 8

Wiring ...............................................................................................9

Main Circuit Standard Wiring Chart ................................................. 10

Control Terminal Designations (Factory Settings) ............................. 11

Safety Precautions.......................................................................... 12

Chapter 3 Digital Keypad/Display Operation

Digital Keypad/Display Features...................................................... 14

Quick Set-up .................................................................................. 16

Operation ....................................................................................... 18

Chapter 4 Description of Parameters .............................................................. 20

Chapter 5 Summary of Parameters .................................................................62

Chapter 6 Troubleshooting and Fault Information ............................................ 69

Appendix A Dimensions ..................................................................................... 73

Appendix B Accessories .................................................................................... 75

Appendix C CE Labeling ....................................................................................77

Appendix D Serial Communication ..................................................................... 82

Document Version Number 3.10

Software Version 1.06

VLT is a registered Danfoss trade mark

VLT® MICRO

Chapter 1

Introduction

Congratulations on your purchase of a VLT® Adjustable Frequency Drive. The VLT

MICRO is a high-performance / low noise general-purpose drive, manufactured using the highest quality components and incorporating the latest micro-processor technology and control algorithms. The purpose of this chapter is to provide specific yet simple information to unpack, install, and operate the drive. This chapter contains information on the following:

• Getting Started

• Unpacking, Inspection, and Storage

• Nameplate Information

• Identification of Parts

Getting Started

This manual will help in the installation, parameter setting, troubleshooting, and daily maintenance of the AC drive. To guarantee safe operation of the equipment, read the following safety guidelines before connecting the Adjustable Frequency Drive to AC Power.

The VLT Adjustable Frequency Drive (AFD) contains dangerous voltages when connected to line voltage. After disconnecting from the line wait at least one minute before touching any electrical components. Also make sure that other voltage inputs have been disconnected, such as external 24 VDC, load-sharing (linkage of DC intermediate circuit), as well as the motor connection for kinetic back-up. Only a competent electrician should carry out the electrical installation. Improper installation of the motor or the AFD may cause equipment failure, serious injury or death. Follow this manual, National Electrical Codes (NEC

) and local safety codes.

Electrostatic Precaution; Electrostatic discharge (ESD). Many electronic components are sensitive to static electricity. Voltages so low that they cannot be felt, seen or heard, can reduce the life, affect performance, or completely destroy sensitive electronic components. When performing service, proper ESD equipment should be used to prevent possible damage from occurring.

It is the responsibility of the user or the person installing the AFD to provide proper grounding, as well as motor overload and branch circuit protection according to the National Electrical Code (NEC

) and local codes.

WARNING

CAUTION

VLT® MICRO

Receiving, Transporting, Inspecting, and Storage

This VLT

MICRO Adjustable Frequency Drive has gone through rigorous quality control tests at the factory before shipment. After receiving and before transporting the drive, check for the following.

Receipt

After receiving the AC drive, inspect the unit to insure it was not damaged during shipment.

Transportation

Climatic condition : Class 2K3

Inspection

• After unpacking the unit, make sure that the package includes a drive unit and the Instruction Manual.

• Make sure that the part number indicated on the nameplate and packing carton

corresponds with the part number of your order.

Storage

The AFD should be kept in the shipping carton before installation. In order to retain the warranty coverage, the drive should be stored properly. Some storage recommendations are:

• Store in a clean, dry place

• Store within an ambient temperature range of -20°C to +65°C

• If possible, store in an air-conditioned evironment where the relative humidity is less than 95%, non-condensing.

• Do not store the unit in places where it could be exposed to corrosive gases.

• Do not store the unit on an unstable surface where it could be damaged by falling to the floor.

Nameplate Information

Example for 1HP 240V AC Adjustable Frequency Drives

Description of Serial Number

1234 01 H 260

Production date: week, year

Place of production

Series number

Serial number

MODEL : 176F7304 S. N. 123401H260 INPUT : 3PH 200-240V 50/60 Hz 6.3A OUTPUT : 3PH 0-240V 5.0A 1.9KVA 1HP Freq. Range: 0.1-400Hz

Model, Serial Number

Input Spec.

Output Spec.

Freq. Range

Tracking number

Part Numbers: 1/2HP 230V single phase 176F7300

1HP 230V single phase 176F7301 2HP 230V single phase 176F7302 1/2HP 230V three phase 176F7303 1HP 230V three phase 176F7304 2HP 230V three phase 176F7305 1/2HP 230V single phase CE 176F7306 1HP 230V single phase CE 176F7307 2HP 230V single phase CE 176F7308

VLT® MICRO

General Technical Data

AC line supply (L1, L2, L3):

Supply voltage 200-240 V units ............................ 1 x 200/208/220/230/240 V ±10%

Supply voltage 200-240 V units ............................ 3 x 200/208/220/230/240 V ±10%

Supply frequency .......................................................................................... 50/60 Hz

Max. imbalance of supply voltage .................................... ±2% of rated supply voltage

Power factor/cos ϕ ............................................................................0.90/1.0 at rated load

Max short circuit rating ..................................................................................... 5000 A

VLT output data (U, V, W):

Output voltage ..................................................................... 0-100% of supply voltage

Output frequency..................................................................................... 0.1 - 400 Hz

Rated motor voltage, 200-240 V units ................................... 200/208/220/230/240 V

Rated motor frequency ................................................................................. 50/60 Hz

Switching on output...................................................................................... Protected

Ramp times ............................................................................................. 0.1-600 sec.

Torque characteristics:

Starting torque.................................................................................... 150% for 1 min.

Acceleration torque ............................................................................................ 100%

Overload torque, 200-240 V ............................................................... 150% for 1 min.

Control card, digital inputs:

Number of programmable digital inputs ..................................................................... 6

Terminal nos. ....................................................................... M0, M1, M2, M3, M4, M5

VLT® MICRO

Control card, analog inputs:

No. of programmable analog inputs (selectable voltage or current) ............................ 1

Terminal numbers ................................................................................................. AV 1

Voltage level .............................................................................................. 0 - 10 VDC

Input resistance, R

..........................................................................................................................................

approx. 47 kΩ

Current range ................................................................................................ 4-20 mA

Input resistance, R

..........................................................................................................................................

approx. 250 Ω

Resolution ................................................................................................ 10 bit + sign

Galvanic isolation: All analog inputs are galvanically isolated from the supply voltage.

Control card, 10 VDC supply:

Terminal numbers ................................................................................................ +10V

Max. load .......................................................................................................... 10 mA

Control card, analog outputs:

Number of programmable analog outputs ................................................................. 1

Terminal numbers ................................................................................................. AFM

Voltage range at analog output .................................................................. 0 - 10 VDC

Galvanic isolation: All analog outputs are galvanically isolated from the supply voltage.

PHC output

Number of programmable photocoupler outputs ....................................................... 1

Terminal numbers ...................................................................................... MO1-MCM

Max. output ...................................................................................... -48 VDC, 50 mA

Control card, RS485 serial communication:

Terminal numbers .............................................................................................. RJ-11

VLT® MICRO

Relay outputs:

No. of programmable relay outputs ........................................................................... 1

Terminal numbers .............................................. RA, RC (N.O.) RB, RC (N.C.) (Form C)

Max. terminal load rating ...........................................................120 VAC/28 VDC, 5 A

........................................................................................................... 240 VAC, 2.5 A

Brake resistor terminals:

Terminal numbers ............................................................................................. B1, B2

Cable lengths and cross-sections: Use 75°C copper wire minimum

Max. motor cable length ...................................................................................... 50 m

Max. cable cross-section for line, motor and brake ......................... 14 AWG (2.0 mm

)

Max. cable cross-section for control terminals ................................ 14 AWG (2.0 mm

)

Control characteristics:

Frequency range ..................................................................................... 0.1 - 400 Hz

Resolution on output frequency .......................................................................±0.1 Hz

Speed, control range (open loop) ............................................. 1:20 of synchro. speed

Speed, accuracy (open loop) .............................................< 1800 rpm: max. error 2%

......................................................... > 1800 rpm: max. error of 0.5% of actual speed

Environment:

Enclosure .............................................................................. Protected chassis (IP20)

Vibration test ...................................................... 1.0 g less than 20Hz, 0.6 g 20-50Hz

Max. relative humidity ................................................ less than 90% (non-condensing)

Ambient temperature ............................................................................ –10°C - +50°C

Temperature during storage/transport ....................................................... –20 - +60°C

Max. altitude above sea level ............................................................ 3300 ft. (1000 m)

VLT® MICRO

AC Line 1Ø and 3Ø, 200 - 240 Volt

VLVL

T OrT Or

T Or

der Number 1Øder Number 1Ø

der Number 1Ø

176F7300176F7300

176F7300

176F7301176F7301

176F7301

176F7302176F7302

176F7302

3Ø3Ø

3Ø

176F7303176F7303

176F7303

176F7304176F7304

176F7304

176F7305176F7305

176F7305

1Ø CE1Ø CE

1Ø CE

176F7306176F7306

176F7306

176F7307176F7307

176F7307

176F7308176F7308

176F7308 Output current continuous (200-240) [A] 2.5 5.0 7.0 intermittent (200-240) [A] 3.7 7.5 10.5 Output continuous (200-240) [KVA] 1.0 1.9 2.7 Typical shaft output [HP] 0.5 1.0 2.0

[kW] 0.4 0.75 1.5

Max. motor cable size [AWG] 14 14 14

[mm

]222

Max. input current 1Ø, 200-240 [A] 6.3 11.5 15.7

3Ø, 200-240 [A] 2.9 6.3 8.8

Max. power cable size [AWG] 14 14 14

[mm

]222

Max. pre-fuses

1Ø [A] 10 20 25

3Ø [A] 10 20 25 Enclosure Chassis (IP20) Weight 1Ø [lbs.] 1.75 2.0 2.25

3Ø [lbs.] 1.75 1.75 2.0

200-240 VAC; Bussmann type JJN or exact equivalent

Specifications

VLT® MICRO

1: Mounting screw holes 2: Nameplate label 3: Bottom cover 4: Digital keypad 5: Upper cover 6: Ventilation hole 7: Input terminals 8: External input/output

terminals

9: B1, B2 External brake

resistor terminals

10: U, V, W Output terminals

U V W B1 B2

R S T

VLT® MICRO

Air

Flow

5 in.

(120mm)

min.

5 in.

(120mm)

min.

2 in.

(50mm)

min.

2 in.

(50mm)

min.

Chapter 2

Installation and Wiring

Chapter 2 provides the information needed to properly install and wire the AC motor drive. Make sure that the AC drive is wired according to the instructions contained in this chapter. The instructions should be read and understood before the actual installation begins. This chapter contains the following information:

• Installation Requirements

• Wiring

Installation Requirements

Install the drive vertically to provide proper ventilation. Adequate space is required between the drive and a wall or other equipment. The figure below shows the minimum space needed.

The AC motor drive should be installed in an environment that is:

• protected from rain or moisture

• protected from direct sunlight

• protected from corrosive gases or liquids

• free from airborne dust or metallic particles

• free from vibration

• free from magnetic noise

• Climate condition : Class 3K3 (temperature between -10°C to 50°C, Operation above 40°C requires good ventilation to avoid over-heating.)

6 in

(150mm)

min.

6 in

(150mm)

min.

VLT® MICRO

Wiring

There are two wiring systems in an AFD: Main Circuit and Control Circuit. The Main Circuit terminals are located at the top of the drive. Control Circuit terminals are located bottom of drive, Both terminal blocks are covered by the plastic housing. Lift the hinged portion of the housing to gain access to the terminals. Make sure power is removed before making any connections. Connect wires to the terminals according to the diagram below. When no connections are made to the control terminals, the drive is operated by the Digital Keypad/Display.

Braking Resistor (Option) Select 80 ohm 120V /200 ohm 120V

VAC Input (Select two terminals as input for 230V single phase models)

Factory set as multi-function input terminals

Forward/Stop

Reverse/Stop

Reset

Multi-Step 1

Multi-Step 2

Multi-Step 3

Signal Common

GND

Grounding

Trim (1K ohm)

Analog + output DC 0-10V –

Factory set as, Indication of output frequency

Multi-function indication output contacts 120VAC/28VDC 5A 240VAC 2.5A

Factory set as, Indication of fault

Multi-function PHC output 48V 50mA below

Factory set as, Indication of "At work"

MO1

MCM

Power for speed setting

+10V 10mA (max)

AV1

GND

Output Freq. determined

Analog voltage 0-10VDC VR: 3K-5K ohm

Analog current 4-20mA

Factory set as, output frequency determined by the potentiometer on the control panel

AFm

GND

Ground

Control Circuit Terminals

Main Circuit (power) Terminals

RJ-11 communication port with RS-485 serial interface 2: GND 3: SG– 4: SG+ 5: +5V

* NOTE: Do not plug a modem or telephone in to the RS485 port. Do not use terminals 2 or 5 when using the port.

VLT® MICRO

Recommended Input Fuses BUSSMAN Type JJN

Fuse VLT MICRO model176F7300 JJN-10 VLT MICRO model176F7301 JJN-20 VLT MICRO model176F7302 JJN-25 VLT MICRO model176F7303 JJN-10 VLT MICRO model176F7304 JJN-20 VLT MICRO model176F7305 JJN-25 VLT MICRO model176F7306 JJN-10 VLT MICRO model176F7307 JJN-20 VLT MICRO model176F7308 JJN-25

NOTE:

1. Main-circuit terminals spec. is M3.

2. Main-circuit wiring is 600V 14AWG max.

3. Wiring between drive and motor should

not exceed 330 ft. (100m) (1) 100 ft. (30m) below, the PWM carrier

frequency should be 15kHz below.

(2) 165 ft. (50m) below, the PWM carrier

frequency should be 10kHz below.

(3) 300 ft. (100m) below, the PWM carrier

frequency should be 5kHz below.

4. Voltage drop (V) = √3 • line resistance

(Ω.Km) • line lengfh (m) • Current (A) • 10

-3

Connection for optional brake resistor. Refer to Appendix for model numbers.

R S T

B1 B2

200-240 V200-240 V

200-240 V

AC unitsAC units

AC units

VLT® MICRO

M01MCM+10VAVIAFMGND

M5M4M3M2M1M0RCRB

Relay contactor output

Factory setting:

Forward / Stop

Reverse / Stop

Reset

Multi-step speed 1

Multi-step speed 2

Multi-step speed 3

Photo coupler output

Factory set: Operation

Speed: 3K-5K

Trim potentiometer VR:1K-5K

Freq. meter

0-10VDC

Full scale voltmeter

Control Terminal Designations

AWG 12-14 Torque 4 kg-cm

Terminal symbol Terminal name Remarks

RA - RC Multi-function output contact Refer to P46, RB - RC Multi-function output contact Relay Output Contact M0 - GND Multi-function input 1 Refer to P38, 39, 40, 41, 42 M1 - GND Multi-function input 2 M2 - GND Multi-function input 3 M3 - GND Multi-function input 4 M4 - GND Multi-function input 5 M5 - GND Multi-function input 6 MO1 - MCM Multi-function PHC output 1 Refer to P45 +10V - GND Power supply for speed control Command for power supply

(+10 V)

AVI - GND Analog voltage freq. command 0 - 10V or 4 - 20mA

inputs (10V and 20mA = max. freq.) AFM - GND Analog frequency/current meter 0 - 10 V output ( 10 V = max. freq.) Note : Use twisted-shielded or twisted-pair shielded wires for the control signals. It is

recommended to run all signal wiring in a separate steel conduit. The shield wire should only be connected to ground at the drive end of the cable.

VLT® MICRO

Installation Notes:

• Make sure that the appropriate input fusing with specified current ratings are connected between the AC Power Line and the AC drive. A MCC (contactor with magnetic trip) is recommended between the drive and circuit breaker to provide a means to disconnect the drive from the power line in the event of a fault.

• Make sure that the leads are connected correctly and the drive is properly grounded. (Ground leads should be at least as the same size as input terminals R, S and T.)

• Use ground leads that comply with AWG standards. Make the length of these ground leads as short as possible.

• Should several units be installed side by side, all the units should be grounded directly to the ground terminal. Do not form a loop with the ground leads.

Forward

running

• When the drive output terminals U, V, and W are connected to the motor terminals U, V, and W, respectively, the motor will rotate counter-clockwise (viewed from the shaft of the motor as shown above) when a forward operation command is received ( FWD lamp is ON).

• Make sure that the power source supplies the correct voltage and is capable of supplying the required current to the drive.

• When power is applied to the drive, the internal DC bus charge indicator LED will be on.

• Do not attach or remove wiring or connectors when power is applied to the drive. Do not attempt to probe signals on the circuit board while the drive is operating.

• For single phase applications, the AC input line can be connected to any two of the three input terminals R, S, T. Note: The drive is not intended for use with single-phase motors.

• To reverse the direction of rotation, interchange the connection of any of the two motor leads.

• Do not connect the AC input to any of the U, V, W terminals, as this will damage the drive.

VLT® MICRO

• Avoid loose wiring and possible shorts. Tighten all screws on AC circuit terminals securely.

• It is a good practice to maintain a 90° angle between wires connected to the AC circuit terminals and wires connected to the control terminals.

• Use shielded cables for Control Circuit wiring,

• Use conduit for the AC power line. The conduit on both the input and output of the power line should be grounded.

• If an EMI filter is required, it should be located close to the drive. Reducing carrier frequency can also be a way to reduce EMI noise, however audible noise from the motor will increase.

• An L-Filter can be added to the U.V.W. side of AC Motor Drives if needed. Do not use a Capacitor, or L-C Filter (Inductance-Capacitance), or R-C Filter (ResistanceCapacitance).

• A “Ground Fault Interrupt Circuit” can be used. To avoid malfunctioning of the motor and drive, sensitivity of the current sensor should not be less than 200 mA with a response time not less than 0.1 second.

VLT® MICRO

Chapter 3

Digital Keypad/Display Operation

Chapter 3 describes the various controls and indicators found on the Digital Keypad/ Display. The information in this chapter should be read and understood before performing the start-up procedures described in Chapter 4.

• Description of the Digital Keypad/Display

• Description of Display

• Digital Keypad Operating Modes & Programming Steps

Description of the Digital Keypad/Display

Operating Modes and Functions

When delivered from the factory, the Digital Keypad/Display module is mounted on the front panel of the AC drive. This module has two functions: display and control. The Display shows the current status of the drive. The control function provides the programming interface.

RUN

STOP

FWD

REV

MODE

RUN

ENTER

STOP

RESET

FREQ SET

100

LED Display

Indicates frequency, motor parameter setting value and alarm contents.

Program / Function Data Key

Selects normal mode / program mode. Displays the motor drive status, such as output freq., selects the parameters, FWD/REV or output current, etc.

ENTER Key

Sets the different parameters

LED Indication

Lamp lights during RUN, STOP, FWD & REV operation.

RUN Key

Starts inverter drive operation.

STOP/RESET Key

Stops and resets the parameter after faults occur.

UP and DOWN Key

Sets the parameter number or changes the numerical data such as the freq. reference.

VR for Setting Freq. Could be the main-freq. input by setting parameter Pr.00.

VLT® MICRO

Function / Program

Pressing the “mode” key repetitively displays the AFD status such as the reference frequency, output frequency, direction or output current and selects the parameter setting mode.

Enter

Pressing the “ENTER” key to enter the data change mode and again to store the value in memory.

Run

Used to start the AC drive operation. This key has no effect when the drive is controlled by the External Control Terminals.

Stop / Reset

Used to stop AC drive operation. If the drive has stopped due to a fault, clear the fault first, then press this key to reset the drive. This key has no effect when the drive is controlled exclusively by the External Control Terminals.

Up / Down

Press the “Up” or “Down” keys momentarily to change parameter settings. These keys may also be used to scroll through different operating values or parameters. Pressing the “Up” or “Down” key momentarily, will changes the parameter settings in single-unit increments. To quickly run through the range of settings, press down and hold the key. Press the "Up" or "Down" key momentarily to select Forward or Reverse directions when in Direction Mode and the drive is controlled by the digital control panel.

MODE

ENTER

RUN

STOP

RESET

RUN

STOP

FWD

REV

Green lamp lights during REV operation.

Green lamp lights during FWD operation.

Red lamp lights by pressing STOP.

Green lamp light by pressing RUN.

Explanation of the LED Indicators

VLT® MICRO

Quick Set-up

Refer to the relevant chapters of this manual for detailed instructions to configure the VLT MICRO for your specific requirements.

Before you start, please read the safety instructions in Chapter 1 of this manual. The adjustable frequency drive contains dangerous voltages when

connected to the AC line. Improper connection of the motor or the VLT MICRO may cause equipment failure, serious injury or death. Follow the directions in this Quick Set-up, as well as all local and national safety codes.

Electrical Installation, Power

Connect the AC line and motor cables as shown in Chapter 2 of this manual.

Programming

The VLT adjustable frequency drive is programmed by means of the Digital Keypad. Refer to Chapter 3 for the keypad functions.

In order to operate in Quick set-up the Pin Header/Jumpers (located next to the input terminals) should be as shown.

NOTE: Speed reference is controlled by the "Arrow" keys. If the potentiometer is to be used as the speed reference parameter Pr.00 will need to be programmed to d01.

Set the following parameters according to the motor nameplate: Max motor frequency Parameter Pr.04 Max motor voltage Parameter Pr.05 Motor rated current Parameter Pr.52 Motor Full Load Amps Drive's Max. Cont. Amps Set the ramp times: Accel time Parameter Pr.10 Decel time Parameter Pr.11

Motor Start

Press the "RUN" key to start the motor. Adjust desired speed using the "Arrow" keys.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

Pr.52 = x 100

Drive's Max Continuous Amps

Model Amps 176F7300 & 176F7303 2.5 176F7301 & 176F7304 5.0 176F7302 & 176F7305 7.0

VLT® MICRO

Explanation of Displayed Messages

Displays the AC drives output frequency. The frequency may be determined by any one of the frequency sources that is selected by the [Master frequency setting] or [Jog Frequency] command. It may also be set using the [Multi-step speed setting 1 - 7] as determined by the inputs to Multi-function Input terminals 1, 2 and 3. If the frequency source originates from the control panel, the user can use either the "up" or "down" key to select the frequency.

Displays the output frequency present at terminals U, V, and W. Displays the custom unit (v), where v = H x Pr.-65. Displays the internal counter value (C). Note : Refer to Chapter 5, Pr.-45, 46, 64 - 66 for detailed description.

Displays the custom unit (v), where v = H x Pr.-65.

Displays the custom unit (r), where r = H x Pr.-65.

Displays the custom unit (L), where L = H x Pr.-65.

Displays the custom unit (%), where % = H x Pr.-65.

Displays the counter value (c).

Displays the output current present at terminals U, V, and W

Displays the internal PLC process step currently being performed.

Displays the specified parameter.

Displays the actual value stored within the specified parameter.

AC drive forward run status.

AC drive reverse run status.

The display will read “end” (as shown in the display to the left) for approximately 1 second if an input has been accepted. After a parameter value has been set, the new value is automatically stored in memory. To modify an entry, use the "up" and "down" keys.

The display will read “Err”, if as input is not accepted, or a parameter value is selected outside the limit of the parameter.

VLT® MICRO

Press keys to select the parameter value.

Press keys to select the parameter number.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

• Operating The Digital Control Panel

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

Press to set the motor running frequency

Note: Set parameter Pr.00 to d00 to enable setting the frequency by the keypad.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP RESET

FREQ SET

100

Press the freq. will decrease

3.5Hz/sec.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

Press the freq. will increase 3.5Hz/ sec.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

• Operate the parameter value setting.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

Displays the parameter number automatically.

Press

Key

MODE

Press

Key

MODE

Press

Key

MODE

Press

Key

MODE

Press

Key

ENTER

Press

Key

Press

Key

ENTER

Press

Key

Press

Key

Press

Key

and hold

Press

Key

and

hold

Release

Key

• Indicate the operation mode.

Indication after power on.

Parameter value setting motor.

Output frequency monitor.

Output current monitor.

Fwd./Rev. monitor.

Displays the frequency setting monitor.

Parameter value setting motor.

The setting value monitor

Modified the Pr. value to d01.

The setting value is right.

Parameter setting monitor.

"End" The new value has

been automatically stored in the

internal memory. "Err" The value entered

is not correct.

Frequency value setting monitor.

Setting the freq. to 59.9Hz.

Decrease the freq. to 0Hz approx 17 sec. later.

Increase the freq. to 60Hz approx 17 sec. later.

The freq. value can be entered in stop or operating mode.

VLT® MICRO

• Change the different indication mode as follows:

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

• Reset the fault messages.

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

RUN

STOP

FWD

REV

MODE

ENTER

RUN

STOP

RESET

FREQ SET

100

Press

Key

MODE

Press

Key

STOP

RESET

Press

Key

Press

Key

RUN

MODE

Press

Key

MODE

Press

Key

MODE

Press

Key

After

10 sec.

twice

After

10 sec.

STOP

RESET

Press

Key

Fault message O.H. is displayed.

Frequency setting will be displayed after the fault is removed.

Change to Reverse oprtation.

Change the Fwd. or Rev. operation.

Setting the frequency.

Decrease motor speed to stop. Stop mode.

"STOP" "REV"

will light up.

"STOP" "REV" will light "RUN" will flash.

"STOP" "FWD" will light up.

"RUN" "FWD" will light up.

Indication after power on.

Operate at

60.0Hz.

Output frequency monitor.

Output current monitor.

Forward operation monitor.

"RUN" "REV" will light

"FWD" will flash.

VLT® MICRO

Chapter 4

Description of Parameters

Pr.00 Master Frequency Source Select

Factory Setting d00

Units None

Settings d00 Master frequency determined by keypad digital control.

d01 Master frequency determined by analog signal of DC 0V - +10V,

a. Performed by keypad potentiometer. The pin header and jumper combined as 1 and 3 in the diagram below. b. Performed by external terminal AVI. The pin header and jumper combined as 2 and 3 in the diagram below.

d02 Master frequency determined by analog signal of DC 4mA - 20mA.

Performed by external terminal AVI. The pin header and jumper combined as 2 and 4 in the diagram below.

Pin Header/Jumper Diagrams:

The pin headers and jumpers are located on the upper right corner of the control board and can be accessed by opening the input terminal cover.

J5: Selects the source of the potentiometer input from

the External Control Terminal (AVI) or from the Digital Keypad/Display (LC-03P) potentiometer.

J6, J7: This jumper is used to select the DC voltage signal

or DC current signal for master frequency control.

J5 J6 J7

1 2 3

J6 J7

1 2 3

External terminal AV1 effective

Analog current signal selection

Keypad VR effective

Analog voltage signal selection

VLT® MICRO

Pr.01 Operation Command Source Select

Factory Setting d00

Units None

Settings d00 Operating instructions determined by the Digital Keypad/Display.

d01 Operating instructions determined by the External Control Terminals.

Keypad STOP key is effective.

d02 Operating instructions determined by the External Control Terminals.

Keypad STOP key is not effective.

(Refer to parameters 38, 39, 40, 41 and 42 for more details.)

Pr.02 Motor Stop Method Select

Factory Setting d00

Units None

Settings d00 Ramp stop

d01 Coast to stop

This parameter determines how the motor is stopped when the AC drive receives a valid stop command.

Ramp: The AC drive output frequency decelerates down to the minimum output frequency (Pr.08) in the time specified by Pr.11 or Pr.13, then the output is turned off.

Coast: The AC drive output is turned off immediately and the motor free runs until it comes to a stop.

Ramp Coast

To determine the best method to stop the motor, the type of load needs to be considered.

1. In many applications operator safety and material processing can be improved when "Ramp Stop" is selected. The accel./decel. time required will depend on the specific parameters of your application.

2. The advantage of using "Coast-to-stop" is the motor will heat less during frequent starting and stopping. Applications where "Coast-to-stop" is commonly used are fans, pumps, blowers, mixing and agitating.

Frequency command

sec. sec.

Speed

Stop command Setting value Stop command ?

Speed (Free running to stop)

Frequency command

VLT® MICRO

Pr.03, Pr.04, Pr.05, Pr.06, Pr.07, Pr.08, Pr.09 – V / F Curve

Pr.03 Maximum Output Frequency

Factory Setting d60.0 Hz

Units 0.1 Hz

Parameter value d50.0 - d400.0 Hz

This parameter determines the maximum AC drive output frequency. Analog inputs (0 10 V, 4 - 20 mA) are scaled to correspond to the output frequency range.

Pr.04 Motor Frequency

Factory Setting d60.0 Hz

Units 0.1 Hz

Parameter value d10.0 - d400.0 Hz

This value should be set according to rated frequency of the motor as indicated on the motor nameplate.

Pr.05 Motor Voltage

Factory Setting d220.0

Units 0.1 V

Parameter value d2.0 - d255.0

This parameter determines the Maximum Output Voltage of the AC drive. The maximum output voltage setting must be smaller than or equal to the rated voltage of the motor as indicated on the motor nameplate.

Pr.06 Mid-point Frequency

Factory Setting d1.50 Hz

Units 0.1 Hz

Parameter value d0.1 - d400.0 Hz

This parameter sets the Midpoint Frequency of the V/F curve. It may be used to determine the V/F ratio between the Minimum Frequency and the Mid-point Frequency.

Pr.07 Mid-point Voltage

Factory Setting d12.0 V

Units 0.1 V

Parameter value d2.0 - d255.0

This parameter sets the Midpoint Voltage of the V/F curve. It may be used to determine the V/F ratio between the Minimum Voltage and the Mid-point Voltage.

VLT® MICRO

Pr.08 Minimum Output Frequency

Factory Setting d1.50 Hz

Units 0.1 Hz

Parameter value d0.1 - d20.0 Hz

This parameter programs the Minimum Output Frequency of the AC drive.

Pr.09 Minimum Output Voltage

Factory Setting d12.0 V

Units 0.1 V

Parameter value d2.0 - d50.0 V

This parameter programs the Minimum Output Voltage of the AC drive.

Voltage

Pr.05

Pr.07

Pr.09

Pr.08 Pr.06

Pr.04

Pr.03

Frequency

Fan/Pump V/F Curve

Custom V/F Curve

Frequency

Pr.03Pr.04

Pr.06

Pr.08

Pr.05

Pr.07

Pr.09

Voltage

Pr.05

Pr.07

Pr.09

Pr.06

Pr.08

Pr.03

Pr.04

Frequency

Standard V/F Curve

VLT® MICRO

Pr.10, Pr.11, Pr.12, Pr.13 Acceleration / Deceleration Time

Pr.10 Acceleration Time 1 (Can be programmed while the drive is running.)

Factory Setting d10.0 Sec

Units 0.1 Sec

Parameter value d0.1 - d600.0 Sec

Commonly Used V/F Pattern Settings

(1) General Purpose

(2) Fans and Pumps

(3) High Starting Torque

Motor Spec 50Hz

Motor Spec 60Hz

No. Set value

Pr.03 50.0

Pr.04 50.0

Pr.05 220.0

Pr.06 1.3

Pr.07 12.0

Pr.08 1.3

Pr.09 12.0

No. Set value

Pr.03 60.0

Pr.04 60.0

Pr.05 220.0

Pr.06 3.0

Pr.07 23

Pr.08 1.5

Pr.09 18.0

No. Set value

Pr.03 50.0

Pr.04 50.0

Pr.05 220.0

Pr.06 25

Pr.07 50.0

Pr.08 1.3

Pr.09 10.0

No. Set value

Pr.03 50.0

Pr.04 50.0

Pr.05 220.0

Pr.06 2.2

Pr.07 23.0

Pr.08 1.3

Pr.09 14

Factory Settings

No. Set value

Pr.03 60.0

Pr.04 60.0

Pr.05 220.0

Pr.06 1.5

Pr.07 10.0

Pr.08 1.5

Pr.09 10.0

No. Set value

Pr.03 60.0

Pr.04 60.0

Pr.05 220.0

Pr.06 30

Pr.07 50.0

Pr.08 1.5

Pr.09 10.0

220

1.3 2.2 60.0

1.3 25 50.0

1.5 30 60.0

1.5 50.0

1.5 60.0

1.5 3 60.0

220

VLT® MICRO

This parameter is used to determine the time required for the AC drive to ramp from 0 Hz to its Maximum Output Frequency (Pr.03). The rate is linear unless S Curve is "enabled". This rate of acceleration applies to any incremental increase in command frequency unless selected using the Multi-Function Inputs, MI1 - 3. See Parameters 39, 40 and 41. Acceleration time 1 is the default when a Multi-Function Input Terminal has not been programmed to select between Acceleration time 1 and Acceleration time 2.

Pr.11 Deceleration Time 1 (Can be programmed while the drive is running.)

Factory Setting d10.0 Sec

Units 0.1 Sec

Parameter value d0.1 - d600.0 Sec

This parameter is used to determine the time required for the AC drive to decelerate from the Maximum Output Frequency (Pr.03) down to 0 Hz. The rate is linear unless S Curve is "enabled". Deceleration time 1 is the default when a Multi-Function Input Terminal has not been programmed to select between Deceleration time 1 and Deceleration time 2.

Note: See Pr.101; Automatic Accel and Decel times are default. Change to "Linear Acceleration/Deceleration" to enable manual adjustment.

Pr.12 Acceleration Time 2 (Can be programmed while the drive is running.)

Factory Setting d10.0 Sec

Units 0.1 Sec

Parameter value d0.1 - d600.0 Sec

This parameter determines the time required for the AC drive to ramp from 0 Hz to the Maximum Operating Frequency (Pr.03). The rate is linear unless S Curve is "enabled". The rate of acceleration applies to any incremental increase in command frequency unless Acceleration Time 1 (Pr.10) is selected. Acceleration Time 1 and 2 may be selected using the Multi-Function Inputs M1 - 3. (See Parameters 39, 40 and 41.)

Speed

Time

Decel Time

Accel Time

Frequency command

Pr.10 or Pr.12

Pr.11 or Pr.13

VLT® MICRO

Frequency

S-curve characteristics Time

Time

Pr.14 > d01 "S curve Enabled"

Pr.14 = d00 "S curve Disabled"

Accel time 1 or 2

Decel time 1 or 2

Note: See Pr.101; Automatic Accel and Decel times are default. Change to "Linear Acceleration/Deceleration" to enable manual adjustment.

Pr.13 Deceleration Time 2 (Can be programmed while the drive is running.)

Factory Setting d10.0 Sec

Units 0.1 Sec

Parameter value d0.1 - d600.0 Sec

This parameter determines the time for the AC drive to decelerate from the Maximum Output Frequency (Pr.03) down to 0 Hz. The rate is linear unless S Curve is "enabled". The rate of deceleration applies to any decrease in command frequency unless Deceleration Time 1 is selected. Deceleration Time 1 and 2 may be selected using the Multi-Function Inputs M1 - 3. (See Parameters 39, 40 and 41.)

Application Notes:

1. The Accel./Decel. Time is defined as the time required to change the output frequency from the value of Pr.03 to the value of Pr.08 (Maximum and Minimum Output Frequencies).

2. The Accel./Decel. time can be calculated by using the parameter values of the following formula: a = [(Pr.10, 11, 12, 13)(Pr.03 Pr.08)](Pr.03 0 Hz).

3. The actual Accel./Decel. time should be measured to insure it meets the system requirements.

Pr.14 S-curve

Factory Setting d00 Sec

Units None

Parameter value d00 - d07

This parameter should be programmed during start-up. It is used to provide smooth acceleration and deceleration. S-curves can be selected from 1 to 7. Settings 1 to 7 are added to the active accel./decel. times to form an adjustable S-curve.

VLT® MICRO

Pr.15 Jog Accel. / Decel. Time

(Can be programmed while the drive is running.)

Factory Setting d1.0 Sec

Units 0.1 Sec

Parameter value d0.1 - d600.0 Sec

This parameter, together with the Jog Frequency (Pr.16), determines the time required for the AC drive to ramp from 0 Hz to the Jog Frequency, or the time required to ramp from the Jog Frequency to 0 Hz.

Pr.16 Jog Frequency

(Can be programmed while the drive is running.)

Factory Setting d6.00 Hz

Units 0.1 Hz

Parameter value d0.1 - d400.0 Hz

Jog Frequency can be controlled through a Multi-Function Input Terminal: M1 to M5 (See Pr.38 - pr.42). Jog starts from the Minimum Output Frequency (Pr.08) accelerating to the Jog Frequency (Pr.16) in the time interval set by the Accel./Decel. Time (Pr.15).

Pr.17, Pr.18, Pr.19, Pr.20, Pr.21, Pr.22, Pr.23 – Multi-speed Operation Multi-Step Speeds 1, 2, 3, 4, 5, 6, 7

(Can be programmed while the drive is running.)

Factory Setting d0.00 Hz

Units 0.1 Hz

Parameter value d0.1 - d400.0 Hz

Multi-step speed Parameters 17 - 23 in conjunction with Parameters 78, 79, 81 - 87 provide multi-step motion control.

Speed

JOG frequency P16

JOG command

OFF

Decel

Time

Pr.15

Accel

Time

Pr.15

Time

VLT® MICRO

Pr.24 Reverse Run Inhibit

Factory Setting d00

Units None

Settings d00 REV run enabled

d01 REV run disabled

This parameter inhibits AC drive operation in the reverse direction.

Pr.25 Over-voltage Stall Prevention

Factory Setting d01

Units None

Settings d00 Disable over-voltage stall prevention

d01 Enbable over-voltage stall prevention

During deceleration, the DC bus voltage may exceed the maximum amount allowable due to motor regeneration. When this function is enabled, the AC drive will cease to decelerate and then maintain a constant output frequency. The drive will only resume deceleration when the voltage drops below the preset value.

Pr.26, Pr.27 Over-Current Stall Prevention

Pr.26 Over-Current Stall Prevention During Acceleration

Factory Setting d170%

Units 1%

Parameter value d50 - d200%

Over voltage stall prevention

Time

Output frequency

DC bus voltage

Over voltage detection level

VLT® MICRO

During periods of rapid acceleration or excessive load, the AC drive output current may increase abruptly and exceed the value specified by Pr.26. When this function is enabled, the AC drive will cease to accelerate, then maintain a constant output frequency. The drive will only resume acceleration when the current drops below the preset value.

Pr.27 Over-Current Stall Prevention During Operation

Factory Setting d170%

Units 1%

Parameter value d50 - d200%

During steady-state operation with the motor load rapidly increasing, the AC drive output current may exceed the limit specified in Pr.27. When this occurs, the output frequency will decrease to maintain a constant motor speed. The drive will accelerate to the steady-state operating frequency only when the output current drops below the level specified by Pr.27. A setting of 100% is equal to the rated current of the drive.

Pr.28, Pr.29, Pr.30, Pr.31 – DC Braking Current

Pr.28 DC Braking Current

Factory Setting d00%

Units 1%

Parameter value d00 - d100%

This parameter determines the DC current that will be applied to the motor during braking when the Motor Stop Method (Pr.02) is programmed to "Ramp Stop". The DC braking current is set at increments of 1%. A setting of 100% is equal to the rated current of the drive.

NOTE: When setting this parameter, begin at a lower current level, then increase the value until sufficient holding torque is achieved. The rated motor current should not be exceeded.

Output current

Output current %

Pr.26

Overcurrent detection level

Output frequency

Time

Stall prevention during acceleration Over-current stall prevention during operation

Time

Output frequency

Overcurrent detection level

Pr.27

VLT® MICRO

Pr.29 DC Braking Time During Start-up

Factory Setting d0.0 Sec

Units 0.1 Sec

Parameter value d0.0 - d5.0 Sec

This parameter determines the time duration that DC braking current will be applied to the motor during the AC drive start-up.

Pr.30 DC Braking Time During Stopping

Factory Setting d0.0 Sec

Units 0.1 Sec

Parameter value d0.0 - d25.0 Sec

This parameter determines the time duration that DC braking current will be applied to the motor when the Motor Stop Method (Pr.02) is set to "Ramp Stop".

Pr.31 DC Braking Start-up Frequency

Factory Setting d0.00 Hz

Units 0.1 Hz

Parameter value d0.0 - d60.0 Hz

This parameter determines the Start-up Frequency for DC braking when the AC drive starts to decelerate. The frequency may be set in 0.1 Hz increments. When the value is less than that specified by Pr.08, Minimum Output Frequency, the start-up frequency for DC braking will be the value specified by this parameter.

Pr.32, Pr.33, Pr.34, Pr.35 – Momentary Power Loss Protection

Pr.32 Momentary Power Loss Operation Mode Selection

Factory Setting d00

Units None

Settings d00 Operation stops after momentary power loss.

d01 Operation continues after momentary power loss. Speed search

starts with the Frequency Reference Value.

Minimum output frequency

DC brake starting frequency

DC braking current %

Pr.08

Pr.29

Pr.28

Pr.31

Pr.30

VLT® MICRO

d02 Operation continues after momentary power loss. Speed search starts with the Minimum Frequency. NOTE: Fault contact is not energized during restart after a momentary power loss. This parameter determines the AC drive mode of operation after recovery from a momentary power loss.

Pr.33 Maximum Allowable Power Loss Time

Factory Setting d2.0 Sec

Units 0.1 Sec

Parameter value d0.3 - d5.0 Sec

During a power failure, if the power loss time is less than the time defined by this parameter, the AC drive will resume operation. If the Maximum Allowable Power Loss Time is exceeded, the AC drive output power will be turned off.

Pr.34 Minimum Base Block Time

Factory Setting d0.5 Sec

Units 0.1 Sec

Parameter value d0.3 - d5.0 Sec

When a momentary power loss is detected, the AC drive output turns off for a specified time interval determined by Pr.34 before resuming operation. This time interval is called the "Base Block Time". This parameter should be set to a value where the residual output voltage is nearly zero.

Pr.35 Speed Search Deactivation Current Level

Factory Setting d100%

Units 1%

Parameter value d30 - d200%

Following a power failure, the AC drive will start its speed search operation only if the output current is greater than the value determined by Pr.35. When the output current is less than that of Pr.35, the AC drive output frequency is determined to be at a "speed synchronization" point. The drive will start to accelerate or decelerate back to the operating frequency at which it was programmed to operate.

INPUT POWER

OUTPUT FREQUENCY

OUTPUT VOLTAGE

Allowable maximum power loss time

Speed synchronization detection

OUTPUT VOLTAGE

OUTPUT FREQUENCY

INPUT POWER

Pr.33

Pr.32 = d01

Speed search starts with the frequency reference value

Pr.34

Min. baseblock

time

Speed

operation

Allowable maximum power loss time

Pr.33

Pr.32 = d0002

Speed search starts with minimum starting frequency

Pr.34

Min. baseblock

time

VLT® MICRO

Pr.36, Pr.37 – Reference Frequency: Upper / Lower limit

Pr.36 Reference Frequency Upper Limit

Factory Setting d400.0 Hz

Units 0.1 Hz

Parameter Value d0.1 - d400.0 Hz

This parameter programs the upper limit of the reference frequency in 0.1 Hz increments.

Pr.37 Reference Frequency Lower Limit

Factory Setting d0.0 Hz

Units 0.1 Hz

Parameter Value d0.1 - d400.0 Hz

Determines the lower limit of the reference frequency in 0.1 Hz increments.

Application Notes:

1. Parameters 36, 37 are provided to prevent damage to the AC motor and applicable machinery. Under certain conditions a motor can overheat and/or machinery can be damaged at excessively high speeds.

2. The lower limit for AC drive operation is determined by the greater value of Pr.08 (Minimum Output Frequency) and Pr.37 (Reference Frequency Lower Limit). The upper limit for AC drive operation is determined by the lesser value of Pr.03

(Maximum Output Frequency and Pr.36 Reference Frequency Upper Limit).

Pr.38 Multi-Function Input Terminals (M0, M1)

Factory Setting d00

Units None

Settings d00 - d02

Pr.39 Multi-Function Input Terminals (M2)

Factory Setting d05

Units None

Settings d03 - d20

Output frequency

Pr.36

Pr.37

Input frequency

VLT® MICRO

Pr.40 Multi-Function Input Terminals (M3)

Factory Setting d06

Units None

Settings d03 - d20

Pr.41 Multi-Function Input Terminals (M4)

Factory Setting d07

Units None

Settings d03 - d20

Pr.42 Multi-Function Input Terminals (M5)

Factory Setting d08

Units None

Settings d03 - d20

Parameter - Function List:

Value Function Value Function

d00 M0: Fwd./Stop, M1: Rev./Stop d11 1st-2nd Accel./Decel. Time Select

d01 M0: Run/Stop, M1: Fwd./Rev. d12 External Base Block

(Normally Closed)

d02 3-Wire Operation Control Mode d13 External Base Block (Normally Open)

d03 External Fault (Normally Open) d14 Increase Output Frequency Control

d04 External Fault (Normally Closed) d15 Decrease Output Frequency Control

d05 External Reset d16 Run PLC Program

d06 Multi-Step Speed Control 1 d17 Pause PLC Program

d07 Multi-Step Speed Control 2 d18 Counter Trigger

d08 Multi-Step Speed Control 3 d19 Counter Reset

d09 Jog Frequency d20 No Operation

d10 Accel./Decel. Speed Inhibit Control

VLT® MICRO

Explanation:

d00, d01: Start/Stop/Directional Control – Mode 1 - Two wire control: Parameter value set to d00 (Pr.38 only).

Mode 2 - Two wire control: Parameter value set to d01 (Pr.38 only).

Mode 3 - Three wire control: Parameter value set to d02 (Pr.38 only).

When value d02 is selected for Pr.38, the program value for Pr.39 will be ignored. Three Wire Control remains in effect.

2. d03, d04: External Fault – Parameter values d03, d04 programs Multi-Function Input

Terminals: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or (Pr.42) to be External Fault (E.F.) inputs.

The External Fault input signal has fast priority for display of "E.F." by the Digital Keypad/Display. All AC drive functions will be stopped and the motor will free-run. Normal operation can resume after the external fault is cleared and the AC drive is reset.

FWD/STOP

REV/STOP

M0 "Open': Stop; "Close": FWD Run

M1 "Open": Stop; "Close": REV Run

GND

VLT MICRO

M0 "Open': Run; "Close": Stop

M1 "Open": FWD; "Close": REV

GND

VLT MICRO

RUN/STOP

REV/FWD

(Run command, Runs when "Closed")

(Stop command, stops when "Open")

(REV/FWD Run select

VLT MICRO

STOP

RUN

REV/FWD

"Open": FWD Run

"Closed": REV Run)

GND

Mx "Close": Operation available.

Mx "Open": Operation available.

GND

VLT MICRO

Setting by d04

E.F.(N.O)

Setting by d03

E.F (N.C)

VLT® MICRO

3. d05: External Reset – Parameter value d05 programs a Multi-Function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) to be External Reset.

External Reset has the same function as the Reset key on the Digital keypad. External

faults O.H., O.C. and O.V. are cleared when this input is used to reset the drive.

d06, 07, 08: Multi-Step Speed Command – Parameter values d06, d07, d08 programs any three of the following Multi-Function Input Terminals: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) for multi-step speed command function.

These three inputs select the multi-step speeds defined by Parameters 17 - 23 as shown in the following diagram. Parameters 78 - 87 can also control output speed by programming the AC drive's internal PLC function.

Mx "Close": Operation available.

GND

VLT MICRO

RESET

Setting by d05

Mx "Closed": Operation available.

GND

d06 Multi-step 1

d07 Multi-step 2

d08 Multi-step 3

VLT MICRO

P17 STEP 1

P18 STEP 2

P19 STEP 3

P20 STEP 4

P21 STEP 5

P22 STEP 6

P23 STEP 7

Master Freq.

Freq.

Mx 1-GND

Mx 2-GND

Mx 3-GND

Operation Command

ON ON ON

ON ON ON ON

OFF

step 2

step 3

step 4

step 5

step 6

step 7

step 1

Time

VLT® MICRO

5. d09: Jog Frequency Control – Parameter value d09 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) for Jog control.

Jog operation programmed by d09 can only be initiated with the motor stopped (refer

to Pr.15, Pr.16).

d10: Accel./Decel. Speed Inhibit – Parameter d10 programs a Multi-functional Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41), M5 (Pr.42) for "hold speed" control. When the command is accepted, acceleration and deceleration is stopped and the AC drive maintains the motor at a constant speed.

d11: First or Second Accel./Decel. Time Select – Parameter value d11 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) to control selection of first or second Accel./Decel. times (refer to Pr.10, Pr.11, Pr.12, Pr.13).

NOTE: This function is disabled when the drive is performing other functions.

d09 jog operation Command

Mx "Closed": Operation available.

GND

VLT MICRO

d11 Switch for 1st / 2nd

Accel./Decel.

Mx "Closed": Operation available. Running with 2nd Accel./Decel.

GND

VLT MICRO

Freq.

Setting Freq,

Mx-GND

Operation Command

Timing

OFF

Actual operation Freq.

Setting Freq.

Accel. inhibit

Decel. inhibit

VLT® MICRO

8. d12, d13: External Base Block – Parameter values d12, d13 program Multi-functional Input Terminals: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) for external Base Block control. Value d12 is for normally open (N.O.) input, and value d13 is for a normally closed input (N.C.).

Application Note: When the programmed inputs for d12 or d13 are used to activate base block control, the motor will free run. When base block control is deactivated, the AC drive will start its speed search function and synchronize with the motor speed then accelerated to programmed frequency.

INPUT POWER

OUTPUT FREQUENCY

OUTPUT VOLTAGE

Allowable maximum power loss time

Pr.33

Pr.32 = d0001

Speed search starts with the frequency reference value

Min. baseblock

time

Speed search

operation

Speed synchronization detection

Pr.34

B.B. (N.O.)

Setting by d12

B.B. (N.C.)

Setting by d13

Mx "Closed': Operation available.

Mx "Open": Operation available.

GND

VLT MICRO

Operation Command

Mx-GND

OFF

Setting Value

Freq.

P10 P11 P12 P13 P10 P13

Time

VLT® MICRO

9. d14, d15: Increase/Decrease Output Frequency Control – Parameter value d14

programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4

(Pr.41) or M5 (Pr.42) to incrementally increase the AC drive output frequency by one unit each time the corresponding input is activated. Parameter value d15 programs an input to decrease the output frequency.

Application Note: If the Multi-function Input Terminals programmed for Increase/Decrease Output Frequency Control (d14, d15) are asserted continuously, the output frequency will increase or decrease unit by unit continuously. If the input is pulsed, the output frequency will change one unit. This control function is enabled when the drive is running. The modified frequency is stored in non-volitile memory.

10.

d16, d17: PLC Function Control – Parameter value d16 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr. 41), M5 (Pr.42) to enable the AC drive internal PLC function. Parameter value d17 programs and input terminal to pause the PLC program.

Application Note: Parameter value d16 programs a Multi-function Input Terminal: M1 - M5 to start the internal PLC program control of the AC drive. Parameters 17 - 23, 78, 79 and 81 to 87 define the PLC program. Parameter value d17 programs an input to pause the PLC program when the input is shorted to ground. When the input terminal is not closed, the PLC program runs continuously.

UP (N.O.)

Setting by d14

DOWN (N.C.)

Setting by d15

Mx "Closed": Operation available Freq. will increase one unit.

GND

Mx "Closed": Operation available Freq. will increase one unit.

VLT MICRO

Mx "Closed": Operation available. Auto-Running is available.

GND

AUTO-RUN (N.O.)

Setting by d16

Setting by d17

VLT MICRO

VLT® MICRO

12.d18: Counter Trigger – Parameter value d18 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) to increment the AC drive's internal counter. When the input transitions from low to high the counter is incremented by 1.

Application Note: The Counter Trigger input can be connected to an external sensor to count a process step or unit of material used in a process. Refer to the diagram below.

13.

d19: Counter Reset – Parameter value d19 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) to reset the counter.

Application Note: The input terminal resets the counter to "00" which can be displayed on the Digital Keypad/Display.

GND

Mx Counter value add. one unit by signal "On" to "Off".

Trigger

d18 Counter trigger signal input.

VLT MICRO

Mx "Closed": Operation available. Indicated by c00 on display.

GND

Reset Counter

d19 Reset the counter value.

VLT MICRO

Counter trigger signal

Indication Value (P64)

Multi-function input terminal

Signal output with (P96 = d05) Pr.-96 counter (P45/P46) value is attained.

Signal output with (P97 = d03) Pr.-97 counter (P45/P46) value is attained.

2mS

The trigger timing can not be less than 2mSec. (<250Hz)

c 02

c 03

c 02

c 01

c 00

c 01c 05c 04

VLT® MICRO

13.d20: (not used) – Parameter value d20 programs a Multi-function Input Terminal: M1 (Pr.38), M2 (Pr.39), M3 (Pr.40), M4 (Pr.41) or M5 (Pr.42) to provide no

function.

Application Note: The purpose of this function is to provide isolation for unused Multi-function Input Terminals. Any unused terminals should be programmed to d20 to insure they have no effect on drive operation.

Pr.43 Analog Output to Drive External Meter

Factory Setting d00

Units None

Settings d00 Analog frequency meter (0 to Maximum Frequency, Pr.03)

d01 Analog current meter (0 to 250% of the rated drive output current)

This parameter selects the AC drive output frequency or output current that will be proportional to the analog meter output signal voltage (DC: 0v - 10v).

Pr.44 Analog Output Gain

(can be programmed while the drive is running)

Factory Setting d100%

Units 1%

Parameter value d01 - d200%

This function regulates voltage level of the AC motor drives analog signal output (either frequency or current output) at the AFM output terminal, which is then fed to a frequency or current indication meter.

The analog voltage output is proportional to the AC drive output frequency. The AC drive's Maximum Output Frequency (Pr.03) is equivalent to 10 v DC. If required, adjust the output level using Pr.44, Analog Output Gain.

The analog voltage output is proportional to the AC drive output current. 10 v DC of analog is equivalent to

2.5 times the AC drive's Rated Output Current. If required, adjust the output level using Pr.44, Analog Output Gain.

GND

Mx Both "Open" or "Closed" without any operation.

NO FUNCTION

d18 No function

VLT MICRO

AFM

ACM

Analog frequency meter

–

Analog current meter

AFM

ACM

+ –

VLT® MICRO

Pr.45 Multi-function PHC Output Terminal (MO1)

Factory Setting d00

Units None

Settings d00 - d14

Pr.46 Multi-function Output Relay Contact RA-RC (NO), RB-RC (NC)

Factory Setting d07

Units None

Settings d00 - d14

Multi-function Output Program Values

Value Function Value Function

d00 AC drive operational d08 Desired Frequency Attained

d01 Pre-set frequency attained d09 PLC Program Running

d02 Non-zero speed d10 PLC Program Step Completed

d03 Over-torque detection d11 PLC Program Execution Completed

d04 Base Block (B.B.) indicator d12 PLC Program Execution Paused

d05 Low-voltage Detect Indicator d13 Terminal Count Value Reached

d06 AC Drive Control Mode d14 Preliminary Counter Value Reached

d07 Fault Indicator

Explanation:

d00: AC Drive Operational – The Multi-function Output Terminal contacts will be "closed" when the AC drive is running or the FWD or REV command is executed.

d01: Pre-set Frequency Attained – The Multi-function Output Terminal contacts will be "closed" when the AC drive reaches the specified operating frequency defined by Pr.04.

d02: Zero-speed Indicator – The Multi-function Output Terminal contacts will be

"closed" when the AC drive output frequency is less than the minimum output frequency.

d03: Over-torque Detection Indicator – The Multi-function Output Terminal contacts will remain "closed" as long as over-torque is detected. Parameter Pr.61 programs the Over-torque Detection Level. Pr.62 sets for the time limitation for over-torque before the AC drive output is turned off.

d04: Base Block Indicator – The Multi-function Output Terminal contacts will always be "closed" as long as the AC drive output is turned off.

6. d05: Low-voltage Detect Indicator – The Multi-function Output Terminal contacts will be "closed" when the AC drive detects a low-voltage state.

VLT® MICRO

7. d06: AC Drive Control Mode – The Multi-function Output Terminal contacts will be "closed" when the AC drive operation is controlled by the external terminals.

8. d07: Fault Indicator – The Multi-function Output Terminal contacts will be "closed" when a fault is detected.

d08: AC Drive Control Mode – The Multi-function Output Terminal contacts will be

"closed" when the output frequency equals the Desired Frequency attained (Pr.47).

10.

d09: PLC Program Running – The Multi-function Output Terminal contacts will be

"closed" the PLC program is executing.

11.

d10: PLC Program Step Completed – The Multi-function Output Terminal contacts

will be "closed" within 5 seconds when each multi-step speed is attained.

12. d11: PLC Program Completed Execution – The Multi-function Output Terminal contacts will be "closed" within 5 secs. after the PLC program completes execution.

13.

d12: PLC Program Execution Paused – The Multi-function Output Terminal contacts will be "closed" when the PLC program execution is paused by a multi-function input terminal that has been programmed to pause the drive operation.

14.

d13: Terminal Count Reached – The Multi-function Output Terminal contacts will be "closed" when the counter value is equeal to the value programmed by Pr.96.

15. d14: Preliminary Counter Value Reached – The Multi-function Output Terminal

contacts will be "closed" when the counter value equeals the value of Pr.97.

Multi-function terminals wiring example

Pr.47 Desired Frequency Attained

Factory Setting d0.0 Hz

Units 0.1 Hz

Parameter value d0.0 - d400.0 Hz

Used to select a specified frequency in increments of 0.1 Hz.

Multi-Function PHC output terminals

Multi-Function indication output terminals

Faults indication

Power indication

MO1

MCM

AC/DC Power Source

AC 250V 2A DC 30V 2A

PHC 48VDC 50mA

Plus terminal

Power 48VDC 50mA

Minus terminal

Pre-set freq. attained

VLT® MICRO

Multi-function output terminal operation (d01 and d08)

Pr.48 Output Frequency Offset

(can be programmed while the dirve is running)

Factory Setting d0.00

Units 0.1 Hz

Parameter value d0.0 - d350.0 Hz

Pr.49 Process Signal Bias

(can be programmed while the dirve is running)

Factory Setting d00

Units none

Parameter value d00 (minimum output frequency corresponds to 0 V, 4 mA)

d01 (minmum output frequency corresponds to potential bias)

Pr.50 Process Signal Gain

Factory Setting d100

Units 1%

Parameter value d01 - d200%

Pr.51 Process Signal Reverse Motion

Factory Setting d00

Units none

Parameter value d00 (forward motion only)

d01 (reverse motion enabled)

Detective Range

± 2Hz

OFF

Setting Freq.

Desired Freq. Setting

Pre-set Freq. attained indication

Desired Freq. Attained Setting

P47

P45/46

Detective Range

± 4Hz

Inefficient Range

– 2Hz

VLT® MICRO

In the following examples the output frequency and direction of motion is controlled by a potentiometer connected to the external terminals or the potentiometer in the Digital Keypad/Display. Observe the interaction and effect of parameters: Pr.48, 49, 50, 51 on the potentiometer operation.

Example 1: The configuration in this example is the most common. Set Pr.00 to d00, d01 or d02 and select J5, J6, J7 jumper settings to control the output frequency: through potentiometer in the Digital Keypad/Display, or through the external AV1: 0-10 V, 4-20 mA.

Example 2: In this example the output frequency range is 10 Hz to 60 Hz. Turning the potentiometer fully counter clockwise, corresponds to an output frequency of 10 Hz. Turning the potentiometer fully clockwise, to the stop, corresponds to 60 Hz. The midpoint corresponds to 40 Hz. The effective AVI signals are: 0-8.33 V or 4-13.33 mA.

Example 3: In this example the Process Signal Gain (Pr.50) is d83%. The control range of the potentiometer is 10 - 60 hz as shown below. The corresponding range on the external AVI terminals is: 0-10 V and 4-20 mA.

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 0Hz P49 = 0 P50 = 100% P51 = 0

30Hz

0Hz

0V 5V 10V 4mA 12mA 20mA

0V 10V

060

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 10Hz P49 = 0 P50 = 100% P51 = 0

0Hz

0V 10V 4mA 20mA

0V 10V

060

10Hz

P48 = 10Hz

It's 60Hz within this range

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 10Hz P49 = 0 P50 = 83% P51 = 0

0Hz

0V 10V 4mA 20mA

0V 10V

060

10Hz

P48 = 10Hz

Calculated method of gain value

P48

P03

P50 = (1 – ) x 100%

VLT® MICRO

Example 4: In this example a Process Signal range of 0 to 5 V is used to control the output frequency from 0 to 60 Hz. Programming for this function can be done in two ways: 1 set Pr.50 to 200%, 2 set Pr.03 to 120 Hz, Pr.50 to 100%.

Example 5: In this example Pr.49 is set to a 1 V Process Sigfnal bias and Pr.50 is set to 100% creating a potentiometer control voltage range of 1 to 10 V and an output frequency range of 0 to 54 Hz. This configuration is suitable for high noise environments where an external potentiometer is connected to the external AVI terminals by a cable.

Example 6: This example is a variation of Example 5. Set Pr.50 to 110% to extend the maximum output frequency to 60 Hz. (In Example 5 the maximum output frequency is 54 Hz.)

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 0Hz P49 = 0 P50 = 200% P51 = 0

0Hz

0V 5V

30Hz

Calculated method of gain value

10V

P50 = ( ) x 100%

P50 = 200%

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 6Hz P49 = 1 P50 = 100% P51 = 0

0Hz

0V 1V 10V

0V 10V

54Hz

P48 = 6Hz P49 = 1

It's 0Hz within this range.

Max. operation Freq.

P03 60Hz

Factory Setting Value

P03 = 60Hz P48 = 6Hz P49 = 1 P50 = 110% P51 = 0

0Hz

0V 1V 10V

0V 10V

060

54Hz

P48 = 6Hz P49 = 1

It's 0Hz within this range.

P50 = 110%

Calculated method of gain value

P48

P03

P50 = ( 1+ ) x 100%

VLT® MICRO

Example 7: This example is a combination of the previous 6 examples with forward and reverse motion added. Note: forward and reverse motion control is not available through the external terminals. (Refer to Pr.38-42 and Parameter values d00, d01, d02.)

Example 8: In this example sensors are used to control the output frequency from 60 to 0 Hz. As the process signal increases from 4 to 20 mA, the output frequency decreases from 60 to 0 Hz.

Pr.52, Pr.53 – Motor Operating Specifications

Pr.52 Motor Rated Current (can be programmed while drive is running)

Factory Setting d100%

Units 1%

Parameter value d30 - d120%

This parameter must be set according to the ampere specification found on the motor nameplate. The setting will limit the AC drive output current and prevent the motor from overheating. In the event the motor current exceeds this value, the output frequency will be reduced until the motor current drops below this limit.

Max. operation Freq.

P03 60Hz

Parameter Setting Value

P03 = 60Hz P48 = 30Hz P49 = 1 P50 = 200% P51 = 1

30Hz

0Hz

5V 10V

0V 10V

60 60

REV

FWD

Forward

Reverse

30Hz

60Hz

Max. operation Freq.

P03 60Hz

Parameter Setting Value

P03 = 60Hz P48 = 60Hz P49 = 1 P50 = 100% P51 = 1

0Hz

4mA 20mA 0V 10V

0V 10V

4mA 20mA

Anti-stop

VLT® MICRO

Pr.53 Motor No-load Current (can be programmed while drive is running)

Factory Setting d40

Units 1%

Parameter value d00 - d99%

Determines the Motor No-load Current in 1% increments. The Motor Rated Current (Pr.52) is set to 100%.

Pr.54 Torque Compensations (can be programmed while drive is running)

Factory Setting d02

Units 1%

Parameter value d00 - d10%

This parameter may be set so that the AC drive will increase its voltage output during start-up to obtain a higher initial starting torque. The additional torque will be present until the maximum operating frequency is attained.

CAUTION: Be careful when selecting the value for Pr.54. If the value is too high, the motor might overheat or be damaged.

Pr.55 Slip Compensation (can be programmed while drive is running)

Factory Setting d0.0

Units 0.1 Hz

Parameter value d0.0 - d10.0

As motor load increases, the motor slip increases. This parameter may be used to compensate for the nominal slip within a range of 0.0 - 10.0 Hz. When the output current of the AC drive is greater than the Motor No-load Current (Pr.53), the AC drive will adjust its output frequency according to value of Pr.55.

Pr.56 Special Output Display

Factory Setting d00

Units None

Settings d00 Display actual motor operation current

d01 Display DC Bus voltage

Displayed DC Bus voltage can be used to be the basis of input voltage, and is read-only.

Pr.57 Multi-function Indicator Output Contacts RA-RC (N.O.), RB-RC (N.C.)

Factory Setting d##.#

Units None

Settings None

This parameter programs the output contacts: RA-RC (N.O.) or RB-RC (N.C.) to indicate the AC drive is operating at maximum rated output current.

VLT® MICRO

Pr.58, Pr.59 – Electronic Thermal Overload Relay

Pr.58 De-rating for Output Current vs. Temperature

Factory Setting d02

Units None

Settings d00 Active with standard motor

d01 Active with special motor d02 Inactive

To prevent self-cooled motors from over heating when running at low speeds, program this parameter to limit the AC drive output power. d00:The electronic thermal characteristics match a reduced torque motor

(standard motor).

d01:The electronic thermal characteristics match a constant torque motor

(special motor).

Pr.59 Activation Time for I2t Protection

Factory Setting d60

Units 1 Sec

Parameter value d30 - d300 Sec

This parameter programs the time required to activate the I

t electronic thermal protection function. The activation time may be defined according to short, standard and long time ratings.

Operation time (min)

0 20 40 60 80 100 120 140 160 180 200

Load factor (%)

60Hz or more

50Hz

10Hz

5Hz

150%

VLT® MICRO

Pr.60, Pr.61, Pr.62 – Over-torque Detection

Pr.60 Over-torque Detection Mode

Factory Setting d00

Units None

Settings d00 Over-torque Detection not enabled

d01 Over-torque Detection during constant speed operation.

Drive operation halted after over-torque detection.

d02 Over-torque Detection during constant speed operation.

Drive operation continues after over-torque detection.

d03 Over-torque Detection during operation.

Drive operation halted after over-torque detection.

d04 Over-torque Detection during operation.

Drive operation continues after over-torque detection.

This parameter determines the AC drive's operation after Over-torque is detected. Overtorque Detection is based on the following: when the output current exceeds the Overtorque Detection Level (Pr.61, factory preset value = 150%) and the Over-torque Detection Time (Pr.62, factory setting = 0.1 second = 0.1 second, hysteresis fixed at 10%). The Multi-function PHC output 1 and 2 may be set to indicate over-torque condition. (Refer to Pr.45 and 46).

Pr.61 Over-torque Detection Level

Factory Setting d150

Units 1%

Parameter value d00 - d200%

This parameter sets the Over-torque Detection Level in 1% increments. (The AC drive rated current is defined to be 100%).

Pr.62 Over-torque Detection Time

Factory Setting d0.1 Sec

Units 0.1 Sec

Parameter value d0.1 - d10 Sec

This parameter sets the Over-torque Detection Time in units of 0.1 seconds.

Pr.63 Reserved

VLT® MICRO

Pr.64 User Defined Function for Display

Factory Setting d06

Units None

Settings d00 Displays AC drive output frequency (Hz)

d01 Displays the user-defined setting (V, meter/sec where V = H) d02 Displays the user-defined setting (r):(R.P.M.) d03 Displays the user-defined setting (L):(Length) d04 Displays the user-defined setting (=):(%) d05 Displays the value of the internal counter (C) d06 Displays the setting Frequency (F) d07 Displays the parameter setting (P) d08 Reserved d09 Displays the motor operating current (A) d10 Displays Fwd./Rev. mode

The parameter can be set to display the user-defined value. (where V = H x Pr.65)

Pr.65 Coefficient of Line Speed

Factory Setting d160

Units 0.1

Parameter value d0.1 - d160

Coefficient K determines the multiplying factor for the user-defined value (v). The value of the user-defined setting (v) is calculated and displayed as follows: Display Value, v = output frequency x K. The maximum value that can be displayed is 999. If the value of "v" exceeds "999" the display value defaults to v = output frquency x 0.1.

Pr.66 Master Frequency

Factory Setting d1.0 - 400 Hz

Parameter value d0.1 - d160

Pr.67, Pr.68, Pr.69 Frequency Setting Prohibited

Pr.67, 68, 69 Skip Frequency 1, 2, 3

Factory Setting d0.00 Hz

Units 0.1 Hz

Parameter value d0.0 - d400.0 Hz

This parameter determines the three skip frequencies which in conjunction with Pr.70, Skip Frequency Band, will cause the AC motor drives to skip operation at each frequency band. Note: Pr.67 > Pr.68 > Pr.69.

VLT® MICRO

Pr.70 Frequency Bandwidth Setting Prevention

Factory Setting d0.00

Units 0.1 Hz

Parameter value d0.1 - d20.0 Hz

This parameter determines the frequency band for a given Skip Frequency. Half of the Skip Frequency Band is above the Skip Frequency and the other half is below. Programming this parameter to 0.1 disables all skip frequencies.

Pr.71 PWM Carrier Frequency Select

Factory Setting d15

Units 1 kHz

Parameter value d01 - d18 kHz

This parameter determines the carrier frequency for the "Pulse Width Modulated" output.

Carrier Electromagnetic Noise leakage Heat

frequency noise current dissipation

1kHz large small small 3kHz

9 kHz 15 kHz 18 kHz small large large

Note: Audible of AC motor can be reduced by using a higher carrier frequency, however please note that the rated output current of the drive decreases by 0.2A for every 1 kHz increase in carrier above 16 kHz.

Output frequency

Adjustable range

Speed command frequency

Frequency to be jumped

Skip frequency set point

Decelerating

Accelerating

Pr.67

Pr.68

Pr.69

Pr.70

VLT® MICRO

Pr.72 Auto-Reset / Restart Operation Following a Fault

Factory Setting d00

Units none

Parameter value d00 - d10

Auto-Reset/Restart Operation may be performed up to 10 times after a fault has occurred. Setting the parameter to d00 disables the Reset/Restart operation after a fault has occurred. When the drive detects over current or over voltage the Auto Reset/ Restart function can be selected to automatically restart the drive.

Pr.73, Pr.74, Pr.75 – Three Most Recent Fault Records

Pr.73, 74, 75 The 1st, 2nd, 3rd most recent fault record

Factory Setting d00

Units none

Settings d00 Fault records clear (no errors occurred)

d01 Over-current (oc) d02 Over-voltage (ov) d03 Overheat (oH) d04 Overload (oL) d05 Overload 1 (oL1) d06 External Fault (EF) d07 CPU failure 1 (CF1) d08 CPU failure 3 (CF3) d09 Hardware Protection Failure (HPF) d10 Over-current during acceleration (OCA) d11 Over-current during deceleration (OCd) d12 Over-current during steady state operation (OCn) d13 Ground fault or false failure (GFF) d14 Manufacturer-used diagnostics d15 Manufacturer-used diagnostics d16 Manufacturer-used diagnostics d17 External Base Block (bb) d18 Overload 2 (oL2) d19 Manufacturer-used diagnostics d20 Software protection code

Parameters: Pr.73, Pr.74 and Pr.75 store the three most recent faults that have occurred. Set these parameters to d00 to clear the fault and return the drive to service. The fault should be removed before returning the drive to service.

VLT® MICRO

Pr.76 Parameter Key

Factory Setting d00

Units None

Settings d00 All parameters can always be set and read

d01 All parameters are read-only

d02-d09 Not used

d10 Resets all parameters to the factory defaults

This parameter controls the programming and read status for all parameters. Value d10 resets all parameters to factory settings.

Pr.77 Reserved

Pr.78 PLC (Programmable Logic Controller) Operation Mode

Factory Setting d00

Units None

Settings d00 Disable PLC program execution

d01 Execute one cycle of the PLC program d02 Continuously execute program cycles d03 Execute one cycle step by step d04 Continuously execute program cycles step by step

This parameter controls PLC program execution: Pr.79 - 87.

VLT® MICRO

Example 1 (Pr.78 = d01): Execute one cycle through the PLC program

Example 2 (Pr.78 = d02): Continuously execute program cycles

P17=10Hz P42=d16 P81=1.0 P18=20Hz P45=d09 P82=1.2 P19=40Hz P46=d10 P83=1.5 P20=60Hz P78=d01 P84=1.5 P21=50Hz P79=d00 P85=1.7 P22=30Hz P86=1.7 P23=15Hz P87=1.7

Note: Operation time is 10-times by setting value.

Program operation command.

Program operation indication.

Step operation indication.

Program operation completed indication.

P81 P82 P83 P84 P85 P86 P87

P23

60Hz

50Hz

40Hz

30Hz

20Hz

15Hz 10Hz

0Hz

P17

P18

P19

P20

P21

P22

Time

Freq.

P17=10Hz P42=d16 P81=1.0 P18=20Hz P45=d09 P82=1.2 P19=40Hz P46=d10 P83=1.5 P20=60Hz P78=d02 P84=1.5 P21=50Hz P79=d00 P85=0.8 P22=30Hz P86=1.7 P23=15Hz P87=1.7

Note: Operation time is 10-times by setting value.

Step operation indication.

Program operation completed indication.

P81 P82 P83 P84 P85 P86 P87

P23

60Hz

50Hz

40Hz

30Hz

20Hz

15Hz 10Hz

0Hz

P17

P18

P19

P20

P21

P22

Time

Freq.

P17

P18

P81 P82

VLT® MICRO

Example 3 (Pr.78 = d03): Execute one cycle step by step

Example 4 (Pr.78 = d04): Continuously execute program cycles step by step

P17=10Hz P42=d16 P81=1.0 P18=20Hz P45=d09 P82=1.2 P19=40Hz P46=d10 P83=1.5 P20=60Hz P78=d03 P84=1.5 P21=50Hz P79=d00 P85=0.8 P22=30Hz P86=1.7 P23=15Hz P87=1.7

Note: Operation time is 10-times by setting value.

Step operation indication.

Program operation complete indication.

P81

P82

P83

P84

P85

P86

P87

P23

60Hz

50Hz

40Hz

30Hz

20Hz

15Hz 10Hz

0Hz

P17

P18

P19

P20

P21

P22

Time

Freq.

P17=10Hz P42=d16 P81=1.0 P18=20Hz P45=d09 P82=1.2 P19=40Hz P46=d10 P83=1.5 P20=60Hz P78=d04 P84=1.5 P21=50Hz P79=d34 P85=0.8 P22=30Hz P86=1.7 P23=15Hz P87=1.7

Note: Operation time is 10-times by setting value.

P81

P82

P83

P84

P85

P86

P87

P23

60Hz

50Hz

40Hz

15Hz 10Hz

0Hz

P17

P18

P19

P20

P21

P22

Time

Rev.

P81

P17

Freq.

Fwd.

20Hz

30Hz

VLT® MICRO

Example 5 (Pr.78 = d01): Execute one cycle through the PLC program

Application Note: Changing the value of Jog parameters 15 and 16 will interrupt PLC program execution. PLC program execution will not be interrupted when and other parameter values are changed.

Pr.79 PLC Forward/Reverse

Factory Setting d00

Units None

Settings d00 - d127

This parameter controls the direction of motion for the multi-speed parameters 17 to 23.

P17

P21

P20

P17=10Hz P42=d16 P81=1.0 P18=20Hz P45=d09 P82=1.2 P19=40Hz P46=d10 P83=1.5 P20=60Hz P78=d01 P84=1.5 P21=50Hz P79=d34 P85=0.8 P22=30Hz P86=1.7 P23=15Hz P87=1.7

Note: Operation time is 10-times by setting value.

P82

P83

P84

P85

P86

P87

P23

60Hz

50Hz

40Hz

15Hz 10Hz

0Hz

P17

P18

P19

P22

Time

Rev.

P81

Freq.

Fwd.

20Hz

30Hz

VLT® MICRO

Explanation: The equivalent 7-bit binary number is used to program forward/reverse motion for each of the 7 speed steps.

Example: parameter value = d50 equals 0110010

Attached: 2

= 1 23 = 8 26 = 64

= 2 24 = 16

= 4 25 = 32

Setting Example:

The direction of muti-speed1=Fwd.

The direction of muti-speed2=Rev.

The direction of muti-speed3=Fwd.

The direction of muti-speed4=Fwd.

The direction of muti-speed5=Rev.

The direction of muti-speed6=Rev.

The direction of muti-speed7=Fwd.

0 = Fwd.

1 = Rev.

2 2 2 2 2 2 2

6 5 4 3 2 1 0

7 6 5 4 3 2 1 0 1 1 0 0 1 0

bit

Direction

Decimal value = binary bit 7x2 + bit 6x2 + bit 5x2 + bit 4x2 + bit 3x2 + bit 2x2 + bit 1x2

= 0x2 + 1x2 + 1x2 + 0x2 + 0x2 + 1x2 + 0x2

= 0 + 32 + 16 + 0 + 0 + 2 + 0

= 50

Setting the P79 = d50

654

210

Forward motion of Pr.17 multi-speed 1.

Reverse motion of Pr.18 multi-speed 2.

Forward motion of Pr.19 multi-speed 3.

Forward motion of Pr.20 multi-speed 4.

Reverse motion of Pr.21 multi-speed 5.

Reverse motion of Pr.22 multi-speed 6.

Forward motion of Pr.23 multi-speed 7.

0 = Fwd.

1 = Rev.

2 2 2 2 2 2 2

6 5 4 3 2 1 0

7 6 5 4 3 2 1

bit

VLT® MICRO

Pr.80 Manufacturer Model Information

Factory Setting d##

Units None

Settings d00 220V 3-Phase/1-Phase 0.5Hp

d01 400V 3-Phase/1-Phase 0.5Hp d02 220V 3-Phase/1-Phase 1.0Hp d03 400V 3-Phase/1-Phase 1.0Hp d04 220V 3-Phase/1-Phase 2.0Hp d05 220V 3-Phase/1-Phase 2.0Hp d06 200V 3-Phase/1-Phase 3.0Hp d07 200V 3-Phase/1-Phase 3.0Hp

This parameter contains information on the drive: model number, firmware version, etc. (The parameter is read only).

Pr.81 ~ Pr.87 PLC Program Step Time Intervals

Factory Setting d0.0

Units 10 Sec

Settings d0.0 - d650

Each of the parameters: 81 to 87 control the time intervals for each Multi-speed Step defined by Pr.17 to Pr.23.

Pr.88 ~ Pr.94 Serial Communication (See Appendix D in this manual.)

Pr.95 Auto Energy-saving

Factory Setting d00

Units None

Settings d00 Without energy-saving operation

d01 With energy-saving operation

While enabling auto energy-saving, the AC motor drive operates at full power during acceleration/deceleration, and provides the motor optimum voltage calculated automatically based on the load power when operating at fixed rotation speed. This function is not suitable for frequent load variation or load whose operation voltage is close to its rated load.

Output characteristics curve of energy-saving operation

output voltage

output frequency

base frequency

100%

70%

VLT® MICRO

Pr.96 Count Down Completion Settings

Factory Setting d00

Units None

Settings d00 ~ d999

This parameter defines the terminal count value for the internal counter. The counter can be incremented by a low-to-high transition on a selected Multi-Function Input Terminal: M1 or M2. Upon completion of the count, if Pr.45 is programmed to d13, the MultiFunction Output Terminal (MO1) will be closed. If Pr.46 is programmed to d13, the MultiFunction Relay Contact RA, RB, RC will be closed.

Pr.97 Preset Count Down Completion Settings

Factory Setting d00

Units None

Settings d00 ~ d999

This parameter sets a preliminary count value for the internal counter. The counter can be incremented by a low-to-high transition on one of the programmed Multi-Function Input Terminals: M1 or M2. The count starts at c01. When it reaches the preliminary count value and the selected Multi-Function Output Terminal will be closed (Pr.45 = d14). Preliminary Count can be used to initiate an external event before the "terminal count" is reached. (Se Pr.38, 39, 40, 41, 42, 45, 46 for further details).

Pr.98 ~ Pr.99 Reserved

Pr.100 Software Version

Factory Setting d###

Units None

Settings None

This parameter shows the software version of the AC motor drive, and is read-only.

VLT® MICRO

Pr.101 Auto Acceleration/Deceleration Adjustment Selection

Factory Setting d00

Units None

Settings d00 Linear acceleration deceleration

d01 Automatic acceleration, linear deceleration d02 Linear acceleration, automatic deceleration d03 Automatic acceleration, deceleration d04 For deceleration and stall due to overvoltage

Auto acceleration/deceleration adjustment selection can reduce the mechanical vibration resulted from run and stop. When acceleration, the AC motor drive can maintain the acceleration current to its rated value, making the motor operate to the set frequency by the fastest acceleration. When decelerating, it can also judge the load regeneration automatically, and then stop the motor smoothly in the fastest deceleration time.

Using auto acceleration/deceleration selection can avoid complex regulation procedure. It performs acceleration operation without stall and deceleration stop without braking resistors. It can also improve operation efficiency effectively and save energy.

This parameter provides five modes from which to choose: d00 Linear acceleration deceleration

(operation at Pr.10, Pr.11 or Pr.12, Pr.13 acceleration/deceleration time)

d01 Automatic acceleration, linear deceleration

(operation by automatic acceleration, Pr.11 or Pr.13 deceleration time)

d02 Linear acceleration, automatic deceleration

(operation by automatic deceleration time, Pr.10 or Pr.12 acceleration time)

d03 Automatic acceleration deceleration

(acceleration/deceleration time is completely decided by AC motor drive automatic control) d04 Linear acceleration/deceleration according to the time setting of parameters Pr.11 and Pr.13 auto deceleration.

The auto deceleration function is not suitable when using braking resistors.

Pr.102 Auto Voltage Regulation (AVR)

Factory Setting d03

Units None

Settings d00 Enable auto voltage regulation

d01 Disable auto voltage regulation d02 Disable auto voltage regulation when stop d03 Disable auto voltage regulation when deceleration

VLT® MICRO

The rated voltage of motor is normally AC220/200V, 60Hz/50Hz. The input voltage of AC motor drive can be AC180V~264V, 50Hz/60Hz. Without auto voltage regulation, if the input voltage of AC motor drive is AC250V, then the voltage output to the motor is also AC250V. Under the circumstance that the motor operates with voltage in excess of rated voltage for 12%~20%, it will cause temperature increase, insulation damage and unstable torque output. In the long run, the life of the motor will be shortened.

The auto voltage regulation of AC motor drive can stabilize the output power to the motor rated voltage automatically when the output power exceeds the motor rated voltage. For example, with V/F curve set as AC200V/50Hz, if the input power is AC200V~264V, the voltage output to the motor will be stable at AC200V/50Hz, never exceeding the set voltage. If the input power varies between AC180V and AC220V, the voltage output to the motor will proportion to the input power.

When we find the motor stops with ramp type, disabling auto voltage regulation will shorten the deceleration time.

Pr.103 ~ Pr.110 Reserved

Pr.111 Deceleration S curve Setting

Factory Setting d00

Units None

Parameter value d00 ~ d7

This parameter can be set to obtain a slow stop without hard braking. The deceleration S curve will differ according to the setting value from 1-7. If there is no specific setting of this parameter, the parameter of acceleration/deceleration S curve is determined by parameter Pr.14.

When the parameter setting is d00, then the acceleration/deceleration timing is determined by parameter Pr,14 If the parameter setting is between d01 to d07, then Pr.14 is set as acceleration, and Pr.111 is deceleration.

Pr.112 External Terminal Scanning Time

Factory Setting d00

Units None

Parameter value d00 ~ d20

This function can screen and protect external terminals when the CPU mis operates due to the external disturbance. Factory setting of the scanning time is 2ms. For example: d01; 2ms, d02; 4ms, etc.

It is necessary to change the parameter Pr.77 setting to d02, in order to change the scanning time when setting this parameter.

VLT® MICRO

Chapter 5

Summary of Parameters

This chapter summarizes all 10 of the parameter groups. For complete descriptions of individual parameters refer to Chapter 4.

No. Parameter Function Parameter Factory

Name Explanation Value Setting

00 Master Speed Master frequency d00:Master frequency input d00

Frequency source select determined by the digital Setting control panel

d01:Master frequency input

determined by the analog signal (DC 0 to +10 V)

d02:Master frequency input

determined by the analog signal (DC 4 to 20 mA)

01 Operation Operation d00:Operating instructions d00

Command command determined by the digital Source source select control panel

d01:Operating instructions

determined by the external terminal connections, keypad STOP key effective

d02:Operating instructions

determined by the external terminal connections, keypad STOP key not effective

02 Motor stop Motor stop d00:RAMP stop d00

method method select d01:Coasting to stop 03 V/F Curve Max output freq. d50.0 - d400. Hz d60.0 04 Setting Max voltage freq. d10.0 - d400. Hz d60.0 05 (13 & 14) Max output volt d2.0 - d255.0 V d220. 06 Mid-point freq. d0.1 - d400. Hz d1.50 07 Mid-point volt d002.0 - d255. V d12.0 08 Min output freq. d0.1 - d20.0 Hz d1.50 09 Min output volt d2.0 - d50.0 V d12.0 10 Accel/Decel Acceleration time 1 d0.1 - d600. sec d10.0 11 Time Setting Deceleration time 1 d0.1 - d600. sec d10.0 12 Acceleration time 2 d0.1 - d600. sec d10.0

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting 13 Deceleration time 2 d0.1 - d600. sec d10.0 14 S-curve S-curve d00 - d07 d00 15 Jog Operation Jog acel/decel time d0.1 - d600. sec d1.0 16 Setting Jog frequency d0.1 - d400. Hz d6.00 17 Multi-step Multi-step speed 1 d0.0 - d400. Hz d0.00 18 Operation Multi-step speed 2 d0.0 - d400. Hz d0.00 19 Speeds Multi-step speed 3 d0.0 - d400. Hz d0.00 20 Multi-step speed 4 d0.0 - d400. Hz d0.00 21 Multi-step speed 5 d0.0 - d400. Hz d0.00 22 Multi-step speed 6 d0.0 - d400. Hz d0.0 23 Multi-step speed 7 d0.0 - d400. Hz d0.0 24 REV run REV run inhibit d00:REV run enable d00

inhibit d01:Rev run disable 25 Over-volt Stall Over-voltage stall d00:Disable over-volt stall prevent d01

Prevention prevention d01:Enable over-volt stall prevent 26 Over-current Over-current stall d50 - d200% d170

Stall prevention (during

Prevention acceleration) 27 Over-current stall d50 - d200% d170

prevention (during

operation) 28 DC Braking DC braking current d0.0 - d100% d0.0 29 DC braking time d0.0 - d5.0 sec d0.0

during start-up 30 DC braking time d0.0 - d25.0 sec d0.0

during stopping 31 DC braking start-up d0.0 - d60.0 Hz d0.0

frequency 32 Momentary Momentary power d00:Operation stops after d00

Power Loss loss operation momentary power loss Protection mode selection d01:Operation continues after

momentary power loss. Speed search starts with the frequency reference value.

d02:Operation continues after

momentary power loss. Speed search starts with the minimum frequency

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting

33 Maximum allowable d0.3 - d05.0 sec d2.0

power loss time

34 Freq Searching Min base block time d0.3 - d05.0 sec d0.5 35 Function Speed search d30 - d200% d150

Setting deactivation

current level

36 Reference Freq. Reference freq. d0.1 - d400. Hz d400.

Upper/Low upper limit

37 Limit Setting Reference freq. d0.0 - d400. Hz d0.0

lower limit

38 Multi-function Multi-func input(M1) d00:Fwd/Stop, Rev/Stop control d00 39 Input Terminal Multi-func input(M2) d01:Fwd/Rev, Run/Stop control d05 40 Function Multi-func input(M3) d02:3-wire operation control mode d06 41 Multi-func input(M4) d03:External fault: N.O. input d07 42 Multi-func input(M5) d04:External fault: N.C. input d08

d05:RESET control d06:Multi-step speed control 1 d07:Multi-step speed control 2 d08:Multi-step speed control 3 d09:Jog frequency control d10:Accel/decel speed inhibit d11:1st or 2nd accel/decel time d12:External baseblock (N.O.) d13:External baseblock (N.C.) d14:Up frequency command d15:Down frequency command d16:Run PLC Program d17:Pause PLC Program d18:External counter trigger input d19:Counter Reset d20:(not used)

43 Analog Meter Selects frequency d00:Analog frequency meter (0 to d00

Output Select or output current for [maximum output frequency])

display on external d01:Analog current meter (0-250% analog meter of the rated drive output [A])

44 Analog Output Analog output gain d01 - d200% d100

Gain select

45 Multi-Function Multi-function out- d00:AC drive operational d00

Output TerM. put term. 1 (MO1)

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting

46 Multi-function d01:Pre-set frequency attained d07

RELAY output d02:Non-zero speed

d03:Over-torque detection d04:Baseblock indicator d05:Low-voltage detect d06:AC drive control mode d07:Fault indicator d08:Desired frequency attained d09:PLC program running d10:PLC program step complete d11:PLC completed execution d12:PLC execution paused d13:Terminal counter reached d14:Prelim counter value reached

47 Desired Freq. Desired frequency d0.0 - d400.0 Hz d0.0

Attained attained

48 Potentiometer Potentiometer shift d0.0 - d350 Hz d0.0

Control of output frequency

49 Potentiometer bias d00:Minimum output frequency d00

control corresponds to potentiometer

at 0 V or 4 mA

d01:Initial output frequency set

with a potential bias point, refer to Pr.50

50 Potentiometer out- d01 - d200% d100

put freq. gain

51 Reverse motion d00:Forward motion only d00

setting d01:Reverse motion enabled

52 Mtr. Operating Motor rated current d30 - d120% d100

Specifications

53 Motor no-load d00 - d99% d40 54 Torque Comp. Auto torque d00 - d10 d02

Setting compensation gain 55 Slip Comp. Slip compensation d0.0 - d10.0 d0.0 56 Specific Output Actual mtr. current d00:Display actual motor current d00

Display or DC Bus voltage d01:Display DC Bus voltage 57 AC Drive Rated Current Indicator d##.# 58 Electronic Select motor d00:Active with standard motor d02

Thermal derating vs. d01:Active with special motor

Overload Relay temperature curves d02:Inactive

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting

59 Activation Time for Electronic d30 - d300 sec d60

Thermal Protection Function

60 Over-torque Over-torque d00:Over-torque detection not d00

Detection detection mode enabled

d01:Over-torque detection during

constant speed operation. Drive operation halted after over-torque (OL2).

d02:Over-torque detection during

constant speed operation. Operation continues after over-torque detection (OL2).

d03:Over-torque detection during

operation. Drive operation halted after over-torque (OL2).

d04:Over-torque detection during

operation. Operation continues after over-torque detection (OL2).

61 Over-torque d30 - d200% d150

detection level

62 Over-torque d0.1 - d10.0 sec d0.1

detection time 63 Reserved 64 User Defined Displays user d00:Displays the drive output d06

Parameter defined parameter frequency (H) Displayed on digital keypad/ d01:Display user-define setting (V)

display d02:Display user-define setting (r)

d03:Display user-define setting (L) d04:Display user-define setting (%) d05:Display the counter value (c) d06:Display the program freq. (F) d07:Display the par. setting (Pr.00) d08:Reserved d09:Displays motor current (A) d10:Displays Fwd/Rev mode

65 Coefficient K Coefficient for line d0.1 - d160. d1.0

speed

select

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting 66 Master Freq. d0.1 - 400 Hz d1.0 67 Frequency Skip frequency 1 d0.0 - d400. Hz d0.0

68 Setting Skip frequency 2 d0.0 - d400. Hz d0.00 69 Prohibited Skip frequency 3 d0.0 - d400. Hz d0.00 70 Freq. Band- Skip freq. Band d0.1 - d20.0 Hz d0.00

width Setting

Prevention 71 PWM Carrier Carrier frequency d0.1 - d20.0 Hz d0.00

Frequency select d01 - d18; fc = 1kHz ~ 18kHz d15 72 Auto Reset/Restart Oper. After Fault d00 - d10 d00 73 Fault Records Most recent fault d00: Fault records clear (No d00

record errors occurred)

74 2nd most recent d01: Over-current (oc) d00

fault record

75 3rd most recent d02: Over-voltage (ov) d00

fault record

d03: Overheat (oH) d04: Overload (oL) d05: Overload 1 (oL1) d06:External fault (EF) d07:CPU failure 1 (CF1) d08: CPU failure 3 (CF3) d09:Hardware protect failure (HPF) d10: O.C. during acceleration (oCA) d11: O.C. during deceleration (ocd) d12: O.C. during steady state (ocn) d13: Ground fault or fuse fail (GFF) d14:EEROM abnormal 2 (CF2) d15: Manufacture used diagnostics d16: Manufacture used diagnostics d17: External baseblock (bb) d18: Overload 2 (oL2) d19: Manufacture used diagnostics d20: Soft protection efficient (codE)

76 Key Key d00: All parameters can always be d00

Parameter parameter set and read

d01: All parameters are read-only d02 - d09: not used d10:Resets all parameters to the

factory defaults

77 Auto Decel. Auto deceleration d00: Auto deceleration gain key d00

Gain Key gain key d01: Able to adjust the gain value

VLT® MICRO

No. Parameter Function Parameter Factory

Name Explanation Value Setting

78 PLC PLC (programmable d00:Disable PLC performing d00

Operation logic controller) d01:Execute cycle of PLC program Mode operation mode d02:Continuously execute cycles

d03:Execute cycle step-by-step d04:Continuously execute program

cycles step-by-step

79 PLC Fwd/Rev PLC fwd/rev d00 - d127 d00

Control control

80 Manufacturer Information d00:220V 1Ø/3Ø, 0.5 Hp d##

d02:220V 1Ø/3Ø, 1.0 Hp d04:220V 1Ø/3Ø, 2.0 Hp

81 PLC Program Timing for step 1 d0.0 - d650 d0.0 82 Step Time Timing for step 2 d0.0 - d650 d0.0 83 Intervals Timing for step 3 d0.0 - d650 d0.0 84 Timing for step 4 d0.0 - d650 d0.0 85 Timing for step 5 d0.0 - d650 d0.0 86 Timing for step 6 d0.0 - d650 d0.0 87 Timing for step 7 d0.0 - d650 d0.0

88-94 Serial Communication (See Appendix D)

95 Auto Energy- Auto Energy-saving d00:Without energy-saving operation d00

saving d01:With energy-saving operation

96 Count Down Count down value d00 ~ d999 d00

Completion setting

97 Preset Count Preset count-down d00 ~ d999 d00

Down Compl.

98-99 Reserved

100 Software version Read only d1.06 101 Auto Accel/ Auto acceleration/ d00:Linear accel., decel. d00

Decel deceleration d01:Auto accel., linear decel. Adjustment adjustment select d02:Linear accel., auto decel.

d03: Auto accel./decel.

102 Auto Voltage Auto voltage d00:Enable auto voltage reg. d03

Regulation regulation d01:Disable auto voltage reg.

d02:Disable auto volt reg. w/stop d03:Disable auto volt reg. w/decel

103-110 Reserved

111 Decel S-curve d00 ~ d7 d00

Setting

112 Ext. Term d00 ~ d20 d00

Scanning time Setting

VLT® MICRO

Chapter 6

oubleshooting and Fault Informationoubleshooting and Fault Information

oubleshooting and Fault Information

The AC motor drive has a comprehensive fault diagnosis system that includes more than 20 different alarms and fault messages. Once a fault is detected, the corresponding protective functions will be activated to turn off the AC drive output. The different AC motor drive failures may be classified as follows:

• Over Voltage / Low Voltage

• Heatsink Over Temperature

• Motor Overload

• AC motor drive Overload

• Motor Stalled

• Microprocessor Systems Failure

The three most recent faults are stored in the AC drive non-volatile memory and may be read through the digital control panel, or through the RS-485 interface on the control board.

This section provides information to guide the user in understanding the AC drive fault conditions and the related general troubleshooting procedures. A listing and description of the AC drive failures is given, along with their possible solutions. A section on general troubleshooting is also included for reference. Important: Pressing the Reset button will not restore the AC drive to its normal operating conditions unless the fault is corrected. During any failure, the AC drive switches off and an error message will appear in the display. The last error that occurred is stored in Pr.73.

VLT® MICRO

o.c. The over-current hardware

trip circuit detects an abnormal increase in current.

o.u. The AC drive detects that the

internal DC bus voltage has exceeded its maximum allowable value.

o.H. The AC drive temperature sensor detects excessive heat.

L.u. The AC drive detects that the internal DC bus voltage has fallen below its min. value.

o.L. The AC motor drive detects excessive drive output current. The AC motor drive can withstand up to 150% of the rated current for a maximum of 60 seconds.

Possible Faults Corrective Actions

Check the motor output power to insure it corresponds to the AC drive output power. Check wiring connections between the AC drive and motor for possible short circuits. Increase Acceleration time 1 and 2 (Pr.10, 12). Check for possible excessive loading conditions on the motor.

Check the AC line voltage to insure it falls within the rated AC drive input voltage. Check for possible voltage transients. Bus over-voltage could also be caused by motor regeneration. Either increase the Deceleration time or add an optional braking resistor. If a braking resistor is added, check to insure the required braking power is within the specified limits of the resistor.

Ensure that the ambient temperature falls within the specified temperature range. Check ventilation holes to insure they are not obstructed. Remove any foreign objects on the heatsinks and check for possible dirty heatsink fins. Provide enough spacing for adequate ventilation.

Check the AC line voltage to insure it falls within the rated AC drive input voltage.

Check for motor overloaded. Reduce the Torque compensation setting (Pr.54). Increase the AC drive output capacity (Pr.25 - 27).

VLT® MICRO

o.L.I Internal electronic overload

trip: Motor is overloaded. Reduce the current level so that the drive output current does not exceed the value set by the [Motor rated current] Pr.-52.

o.L.2 Motor overload (Pr.60 - 62)

o.c.A. Over-current during

acceleration:

1. Short-circuit at motor output

2. Torque boost too high.

3. Acceleration time too short.

4. AC motor drive output capacity too small.

o.c.d.Over-current during deceleration:

1. Short-circuit at motor output

2. Deceleration time too short.

3. AC drive output capacity too small.

o.c.n.Over-current during steady state operation:

1. Short-circuit at motor output

2. Sudden increase in motor loading.

3. AC motor drive output capacity too small.

E.F. External terminal EF-DCM goes from ON to OFF.

Check for possible motor overload. Check electronic thermal overload settings (Pr.58, 59). Increase motor capacity.

Reduce the motor load. Adjust the over-torque detection setting to an appropriate setting.

1. Check for possible poor insulation at the output line.

2. Decrease the torque boost setting in Pr.54.

3. Increase the acceleration time.

4. Replace AC drive with higher output capacity.

1. Check for possible poor insulation at the output line.

2. Increase the deceleration time.

3. Replace with an AC drive with higher output

capacity.

1. Check for possible poor insulation at the output line.

2. Check for possible motor binding.

3. Replace AC drive with higher output capacity.

External fault.

Possible Faults Corrective Actions

VLT® MICRO

c.F.I AC motor drive internal

circuitry failure.

c.F.2 AC motor drive E2PROM contains invalid data or can not be programmed.

c.F.3 Internal drive internal circuitry abnormal.

G.F.F. Ground fault or fuse failure: Ground fault : The AC drive output is abnormal. When the output terminal are grounded (short circuit current is 50% higher than the AC drive rated current), the AC drive power module may be damaged. The short circuit protection is provided for the AC drive, not the user.

Fuse failure: A fuse failure will be displayed by the LED on the power board.

b.b. External baseblock.

AC drive output is turned off.

c.F.A Auto acceleration/decel-

eration adjustment mode fault

Possible Faults Corrective Actions

1. Switch off power supply.

2. Check the AC line voltage to insure it falls within the rated AC drive input voltage.

3. Switch power to the AC drive back on.

Check the connections between the main control board and the power board. Reset drive to factory defaults (refer to Pr.76).

Switch off power supply. Check the AC line voltage to insure it falls within the rated AC drive input voltage. Switch power back on.

Ground fault :

1. Check the IGBT power module for damage.

2. Check for possible poor conductor insulation on the output lines.

Fuse failure:

1. Replace Fuse.

2. Check the IGBT power module for damage.

3. Check for possible poor insulation at the

output line.

When the multi-function input 1 (2, 3)-DCM terminal goes from OFF to ON, the AC drive output will be turned off.

Check the motor output power to insure it corresponds to the AC drive output power. Check the AC line voltage to insure it falls within the rated AC drive input voltage. Sudden increase in motor loading.

VLT® MICRO

Appendix A Dimensions 200-240V Series

0.47 (12.0)

0.22 (5.5)

Ø0.2 (5.0)

Dimensions shown

inches (mm)

3.35 (85.0)

3.13 (79.5)

DIGITAL KEYPAD

5.57 (141.5)

0.22 (5.5)

RUN

STOP

4.72 (120.0)

4.45 (113.0)

VLT® MICRO

0.39 (10)

0.22 (5.5)

Ø0.2 (5.0)

Dimensions shown

inches (mm)

3.94 (100)

3.72 (94.5)

DIGITAL KEYPAD

5.94 (151)

0.22 (5.5)

RUN

STOP

4.86 (123.5)

4.59 (116.5)

Dimensions 200-240V CE Series

VLT® MICRO

Remote Keypad Kit 6 ft. (2 meter) 176F7310 15 ft. (5 meter) 176F7325

Appendix B Accessories

Remote Keypad Kit: 6 ft. (2 meter) 176F7310

15 ft. (5 meter) 176F7325

DIN Rail Adapter Bracket Kit:

200-240V, single and three phase 176F7311 200-240V, single phase 200-240V single or three phase C 176F7315

200-240 V200-240 V

200-240 V

ACAC

Brake Resistors:

0.5 HP 30% Duty Cycle 175U1003

0.5 HP 40% Duty Cycle 175U0900

0.75HP 20% Duty Cycle 175U1004

0.75HP 40% Duty Cycle 175U0901

1.0 HP 14% Duty Cycle 175U1005

1.0 HP 30% Duty Cycle 175U0989

1.0 HP 40% Duty Cycle 175U0902

2.0 HP 15% Duty Cycle 175U0992

2.0 HP 40% Duty Cycle 175U0903

Emc Filter: 200-240V, 1Ø 176F7328

200-240V, 3Ø 176F7327

0.55

(14.0)

1.02 (26.0)

6 ft. (2 meters)

1.09

(27.8)

1.04

(26.5)

1.44

(36.5)

1.43 (36.4)

0.65

(16.4)

VLT® MICRO

DIN Rail

Adaptor

DIN Rail Clip

Hex Nut

Mounting Screw

Hex Nut

Mounting Screw

DIN Rail Adaptor Bracket Kit : 200-240V versions 176F7311 200-240V CE versions 176F7315

VLT® MICRO

Appendix C CE Labeling

What is CE Labeling?

The purpose of CE labeling is to avoid technical obstacles to trade within EFTA and the EU. The EU has introduced the CE label as a simple way of showing whether a product complies with the relevant EU directives. The CE label says nothing about the specifications or quality of the product. Adjustable frequency drives are regulated by three EU directives:

The Machinery Directive (89/392/EEC)

All machines with critical moving parts are covered by the machinery directive, which came into force on 1 January 1995. Since an adjustable frequency drive is largely electrical, it does not fall under the machinery directive. However, if an adjustable frequency drive is supplied for use in a machine, we provide information on safety aspects relating to the VLT adjustable frequency drive. We do this by means of a manufacturer's declaration.

The Low-voltage Directive (72/23/EEC)

Adjustable frequency drives must be CE labelled in accordance with the low-voltage directive. The directive applies to all electrical equipment and appliances used in the voltage range of 50-1000 VAC and 75-1500 VDC.

The EMC Directive (89/336/EEC)

EMC is short for electromagnetic compatibility. The presence of electromagnetic compatibility means that the mutual interference between different components/ appliances is so small that the functioning of the appliances is not affected. The EMC directive came into force on 1 January 1996. The directive distinguishes between components, appliances, systems and installations.

What is Covered?

The EU "Guidelines on the application of Council Directive 89/336/EEC" outline three typical situations of using an adjustable frequency drive. For each of these situations, explanations are offered as to whether the situation in question is covered by the EMC directive and must be CE labelled.

1. The adjustable frequency drive is sold directly to the end-consumer. The adjustable frequency drive is for example sold to a DIY market. The end-consumer is a layman. He installs the adjustable frequency drive himself for use with a hobby machine, a kitchen appliance, etc. For such applications, the VLT adjustable frequency drive must be CE labeled in accordance with the EMC directive.

2. The adjustable frequency drive is sold directly to an installation site. That could be, for example, a production facility or a heating/ventilation plant designed and installed by professionals of the trade. Neither the adjustable frequency drive nor the completed installation has to be CE labelled under the EMC directive. However, the unit must

comply with the basic EMC requirements of the directive. The installer can ensure this by using components, appliances and systems that are CE labeled under the EMC directive.

VLT® MICRO

3. The adjustable frequency drive is sold as part of a complete system. The system is being marketed as complete. It could be, for example, an air-conditioning system. The complete system must be CE labeled in accordance with the EMC directive. The manufacturer who supplies the system can ensure CE labeling under the EMC directive either by using CE labeled components or by testing the EMC of the system. If he chooses to use only CE labeled components, he does not have to test the entire system.

Danfoss VLT Adjustable Frequency Drive and CE Labeling

CE labeling is a positive feature when used for its original purpose, i.e. to facilitate trade within the EU and EFTA.

However, CE labeling may cover many different specifications. This means that it has to be checked as to what a given CE label specifically covers.

The specifications covered can in fact be widely different. That is why a CE label can give the installer a false feeling of security when using an adjustable frequency drive as a component in a system or an appliance.

We CE label our VLT adjustable frequency drives in accordance with the low-voltage directive. This means that as long as the VLT adjustable frequency drive is installed correctly, we guarantee that it complies with the low-voltage directive. We issue a declaration of conformity that confirms our CE labeling in accordance with the low voltage directive.

The CE label also applies to the EMC directive, on condition that the instructions given in the operating instructions for EMC-correct installation and filtering have been followed. On the basis, a declaration of conformity in accordance with the EMC directive is issued.

The operating instructions give detailed instructions for installation to ensure that your installation is EMC-correct. Furthermore, we specify which norms that are complied with by our different products.

We offer the filters that can be seen from the specifications and gladly provide other types of assistance that can help you obtain the best EMC result.

Compliance with EMC directive 89/336/EEC

In the great majority of cases, the VLT adjustable frequency drive is used by professionals of the trade as a complex component forming a larger appliance, system or installation. It must be noted that the responsibility for the final EMC properties of the appliance, system or installation rests with the installer. As a aid to the installer, Danfoss has prepared EMC installation guidelines for the Power Drive System. The standards and test levels stated for Power Drive Systems are complied with, provided the right EMC-correct instructions for installation have been followed.

VLT® MICRO

Line

Adjustable Frequency Drive

Motor Cable Shield

Motor

Ground wire

Shield

Ground Plane

General Aspects of EMC Emissions

Electrical interference at frequencies in the range 150 kHz to 30 MHz are cableborne. Airborne interference from the drive system in the range 30 MHz to 1 GHz is generated from the inverter, the motor cable and the motor. As the drawing below shows, capacitive currents in the motor cable together with a high dV/dt from the motor voltage generate leakage currents. The use of a shielded motor cable increases the leakage current (see drawing). This is because shielded cables have higher capacitance to ground than unshielded cables. If the leakage current is not filtered, it will cause greater interference on the AC line in the radio frequency range below approximately 5 MHz. Since the leakage current (I

) is

carried back to the unit through the shield (I

), there will in principle only be a small

electro-magnetic field (I

) from the shielded motor cable according to the drawing below.

The shield reduces the radiated interference, but increases the low-frequency interference on the AC line. The motor cable shield must be connected to the VLT enclosure. The best way of doing this is by using integrated shield clamps so as to avoid twisted shield ends (pigtails). If pigtails are used, make them as short and direct as possible.

In the cases when the shield is to be placed on a mounting plate for the VLT adjustable frequency drive, the shield currents are to be conveyed back to the unit. It is also important to ensure good electrical contact from the mounting plate through the mounting screws to the VLT adjustable frequency drive chassis. With respect to installation, it is generally less complicated to use unshielded cables than shielded ones.

NOTE: When shielded cables are used some emission requirements are not complied with, although the immunity requirements are complied with.

In order to reduce the interference level from the system overall (unit + installation) as far as possible, it is important to make motor and brake cables as short as possible. Cables with a sensitive signal level must not be alongside motor and brake cables. Radio interference higher than 50 MHz (airborne) will be generated especially by the control electronics.

VLT® MICRO

EMC-correct Electrical Installation

General points to be observed to ensure EMC-correct electrical installation:

- Use only shielded motor cables and shielded control cables. NOTE: Suggested shielded cable type, like that supplied by Southwire.

- Connect the shield to ground at both ends.

- PG Cable Glands, of the type shown below, are recommended. Avoid installation with

twisted shield ends (pigtails), since this ruins the shielding effect at high frequencies.

NOTE: Suggested cable gland, "Jacob PG", supplied by ALTECH.

- It is important to ensure good electrical contact from the installation plate through the

installation screws to the metal cabinet of the VLT adjustable frequency drive.

- Use toothed washers and galvanically conductive installation plates.

- DO NOT use unshielded motor cables in the installation panels.

The installer is responsible for the final EMC properties and compliance with the Low Voltage Directive for the installation.

Use of EMC-correct cables

Shielded/armored cables are recommended to optimize EMC immunity of the control cables and the EMC emission from the motor cables. The ability of a cable to reduce the in- and outgoing radiation of electric noise depends on the transfer impedance (Z

). The shield of a cable is normally designed to reduce the transfer of electric noise; however, a shield with a lower Z T value is more effective than a shield with a higher Z T. Z T is rarely stated by cable manufacturers, but it is often possible to estimate Z

by assessing the

physical design of the cable. Z

can be assessed on the basis of the following factors:

• The conductibility of the shield material.

• The contact resistance between the individual shield conductors.

• The shield coverage, i.e. the physical area of the cable covered by the shield - often stated as a percentage value.

• Shield type, i.e. braided or twisted pattern.

VLT® MICRO

–1

–2

–3

Transfer impedance, Z mOhm/m

0.01

0.1

110

100 MHz

The lower the Z the better the cable shielding performance

Aluminum-clad with copper wire.

Twisted copper wire or armored steel wire cable.

Single-layer braided copper wire with varying percentage shield coverage.

Double-layer braided copper wire.

Twin layer of braided copper wire with a magnetic, shielded/armored intermediate layer.

Cable that runs in copper tube or steel tube.

Lead cable with 1.1 mm wall thickness with full coverage.

VLT® MICRO

Pr.88 Communication Address

Factory Setting d1

Settings d1 to 254

This parameter can be set during operation.

If the AC drive is controlled by RS-485 serial communication, the communication address must be set via this parameter.

Pr.89 Transmission Speed

Factory Setting d1

Settings d0 Baud rate 4800 (data transmission: bits / second)

d1 Baud rate 9600 (data transmission: bits / second) d2 Baud rate 19200 (data transmission: bits / second) d3 Baud rate 38400 (data transmission: bits / second)

This parameter can be set during operation.

Users can set parameters and control the operation of the AC drive via the RS-485 serial interface of a personal computer. This parameter is used to set the transmission speed between the computer and AC drive.

Pr.90 Transmission Fault Treatment

Factory Setting d0

Settings d0 Warn and keep operating

d1 Warn and stop by RAMP d2 Warn and stop by COAST

Pr.91 Over Time Detection

Factory Setting d0

Settings d0 No detection

d1 Over Time enable

Pr.92 Communication Protocol

Factory Setting d0

Settings d0 7,N,2

d1 7,E,1 d2 7.O,1 d3 8,N,2 d4 8,E,1 d5 8,O,1

This parameter can be set during operation.

Appendix D Serial Communication

VLT® MICRO

2: GND 3: SG– 4: SG+ 5: +5V

6 1

Start

bit

Stop

bit

Stop

bit

0123456

7-bit character

10-bit character frame

1 Computer Control

• There is abuilt-in RS-485 serial interface, marked (RJ-11) on the control card. The pins are defined below:

Each VLT MICRO drive has a pre-assigned communication address specified by Pr.88. The computer then controls each AC drive according to its communication address.

• The VLT micro can be setup to communicate on Modbus networks using one of the following modes: ASCII (American Standard Code for Information Interchange). Users can select the desired mode along with the serial port communication protocol in Pr.92.

• Code Meaning: ASCII mode: Each 8-bit data is the combination of two ASCII characters. For example, a 1-byte data: 64 Hex, shown as "64" in ASCII, consists of "6" (36Hex) and "4" (34Hex).

2 Data Format

2.1 10-bit character frame (For 7-bit character):

• (7, N, 2: Pr.92 = 0)

VLT® MICRO

Start

bit

Stop

bit

Even

parity

0123456

7-bit character

10-bit character frame

Start

bit

Stop

bit

Odd

parity

0123456

7-bit character

10-bit character frame

Start

bit

Stop

bit

Stop

bit

0123456

8-bit character

11-bit character frame

Start

bit

Even

parity

Stop

bit

0123456

8-bit character

11-bit character frame

• (7, E, 1: Pr.92 = 1)

• (7, O, 1: Pr.92 = 2)

• (8, N, 2: Pr.92 = 3)

• (8, E, 1: Pr.92 = 4)

VLT® MICRO

Start

bit

Odd

parity

Stop

bit

0123456

8-bit character

11-bit character frame

Address CMD02H Data Characters 03H Check Sum

STX

ADR1ADR0CMD1CMD00 1 N-1

......

ETXN CHK1CHK

LRC CHK 0

LRC CHK 1

EXT

......

DATA (n-1)

DATA 1

DATA 0

CMD 0

CMD 1

ADR 0

ADR 1

STX Start character: (02H)

LRC check sum: 8-bit check sum consists of 2 ASCII codes

End characters: ASCII = 03 Hex

Contents of data: n x 8-bit data consist of 2n ASCII codes n 25 maximum of 50 ASCII codes

Communication address: 8-bit address consists of 2 ASCII codes

• (8, O, 1: Pr.92 = 5)

3 Communication Protocol

3.1 Communication Data Frame:

3.2 ASCII mode:

VLT® MICRO

3.3 ADR (1, 0)

00: Broadcast to all AC drives ARD1 = 30Hex, ADR0 = 30Hex 01: To AC drive at Address 01 ARD1 = 30Hex, ADR0 = 31Hex 0F: to AC drive at Address 0F ARD1 = 30Hex, ADR0 = 46Hex 10: To AC drive at Address 10 ARD1 = 31Hex, ARD0 = 30Hex Maximum is 254, at Address FE

3.4 CMD (1, 0)

CMD0: "0" 30Hex: Stop "1" 31Hex: FWD + RUN "2" 32Hex: REV + RUN "3" 33Hex: JOG + FWD + RUN "4" 34Hex: JOG + REV + RUN "5" 35Hex: E.F. ON (External Fault) "6" 36Hex: Reset "7" 37Hex: Write Parameter "8" 38Hex: Read Parameter "9" 39Hex: Read Inverter Status "A" 41Hex: Reserved "B" 42Hex: Reserved "C" 43Hex: Reserved "D" 44Hex: Reserved "E" 45Hex: Reserved "F" 46Hex: Reserved

CMD1: Bit 0 = 0 No Mirror Telegram Bit 0 = 1 Mirror Telegram Bit 2 = 1 When Bit 2 = 1, Means CEXX; clear with RESET command

VLT® MICRO

30H

"0"

33H

"3"

CHK

0 ETX

03H

N1CMD

38H

"8"

30H

"0"

CMD

ADR

31H

"1"

STX

02H

30H

"0"

ADR

N-1

......

30H , 34H

"0" , "4"

30H

"0"

33H

"3"

CHK

0 ETX

03H

N1CMD

38H

"8"

30H

"0"

CMD

ADR

31H

"1"

STX

02H

30H

"0"

ADR

N-1

......

30H , 34H

"0" , "4"

3.5 Data characters

Giving the data format according to the request of communication interface. For example, reading address 01 as Pr.04 of AC drive. "0 & 4" are the data format.

3.6 Chk (1,0)

Check Sum is calculated by summing up ADR to ET. For Example, reading address

01 as Pr.04 of AC drive.

30H + 31H + 30H + 38H + 30H + 34H + 03H = 1

30H

4 AC Drive Responding Mode:

4.1 When CMD1 is Mirror Telegram, AC drive will respond to the original command.

4.2 When CMD0 is Read Parameter, AC drive will respond.

STX(02H) + ADR(1,0) + CMD(1,0) + 8 Data Characters + EXT + CHK(1,0)

8 Data Characters:

• 2 ASCII characters as parameter.

• 2 ASCII characters as parameter number.

• 4 ASCII characters as parameter setting value.

4.3 When CMD0 is Read Inverter Status, AC drive will respond.

STX(02H) + ADR(1,0) + CMD(1,0) + 34 Data Characters + EXT + CHK(1,0)

VLT® MICRO

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

Error Message

IC 75176 or CPU communication port damaged

Transmission Bus Error (The time interval between commands is too short.) Please keep an interval of 10 ms at least after the return of a command. If there is no command returned, also keep an interval of at least 10 ms for the same reason.

Character Frame Error (check whether the Baud rates comply with data frame)

Data out of range (check whether the input data are out of range)

Meaning

Check Sum Error (make sure the Check Sum is correct)

Transmission Time Out

Reserved

34 Data Characters:

• 2 ASCII characters as Error Code

• 2 ASCII characters as LED

• 4 ASCII characters as frequency command (FXX.XX)

• 4 ASCII characters as output frequency (HXX.XX)

• 4 ASCII characters as output current (AXX.XX)

• 4 ASCII characters as DC-BUS voltage

• 4 ASCII characters as output voltage

• 2 ASCII characters as multi-step speed

• 4 ASCII characters as operational time

• 4 ASCII characters as counter value

5 AC Drive Communication Error:

The AC drive receives the messages, but detect a communication error, thus no response is returned. But there will be an error message "CExx" displayed on the keypad. The master device will eventually process a time out condition. The "xx" of CExx" is a decimal code, the meaning of the error message is as follows:

Danfoss 176F7300, 176F7302, 176F7303, 176F7304, 176F7305 User Manual

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