MICROMASTER 420

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نویسنده :  

The MICROMASTER 420 inverter is suitable for a variety of variable-speed drive applications.
It is especially suitable for applications for pumps, fans and conveyor systems.
It is the ideal cost-optimized frequency inverter solution. The inverter is especially characterized by its customer-oriented performance and ease-of-use. Its large supply-voltage range enables it to be used all over the world.

 

 

Application

The MICROMASTER 420 inverter is suitable for a variety of variable-speed drive applications. It is especially suitable for applications for pumps, fans and conveyor systems. It is the ideal cost-optimized frequency inverter solution. The inverter is especially characterized by its customer-oriented performance and ease-of-use. Its large supply-voltage range enables it to be used all over the world.

Design

The MICROMASTER 420 has a modular design. The operator panels and communication modules can be easily exchanged without requiring any tools.

Main characteristics

•    Easy, guided start-up

•    Modular construction allows maximum configuration flexibility

•    Three fully programmable isolated digital inputs

•    One scalable analog input (0 V to 10 V) can also be used as a 4th digital input

•    One programmable analog output (0 mA to 20 mA)

•    One programmable relay output

30 V DC/5 A, resistive load

250 V AC/2 A, inductive load

•    Low-noise motor operation through high pulse frequency, adjustable (observe derating if necessary)

•    Complete inverter and motor protection

Options (overview)

•    EMC filter, Class A/B

•    LC filter

•    Line commutating chokes

•    Output chokes

•    Gland plates

•    Basic Operator Panel (BOP) for parameterizing the inverter

•    Advanced Operator Panel (AOP) with multi-language plain text display

•    Asian Advanced Operator Panel (AAOP) with Chinese and English plain text dis¬play

•    Cyrillic Advanced Operator Panel (CAOP) with Cyrillic, German and English plain text display  

•    Communication modules

    •    PROFIBUS

    •    DeviceNet

    •    CANopen

•    PC connection sets

•    Mounting kits for installing the operator panels in the control cabinet doors

•    PC start-up programs exe¬cutable under Windows 98/NT/2000/XP Professional

•    TIA integration with Drive ES

International standards

•    The MICROMASTER 420 inverter complies with the requirements of the EU low-voltage guideline.

•    The MICROMASTER 420 inverter has the CE marking.

•    Acc. to uL and cuL certified

•    c-tick

Mechanical features

•    Modular design

•    Operating temperature: -10 °C to +50 °C (+14 °F to +122 °F)

•    Compact housing as a result of high power density

•    Easy cable connection, mains and motor connections are separated for optimum electromagnetic compatibility

•    Detachable operator panels

•    Screwless control terminals

Performance features

•    Latest IGBT technology

•    Digital microprocessor control

•    Flux current control (FCC) for improved dynamic response and optimized motor control

•    Linear V/f characteristic

•    Quadratic V/f characteristic

•    Multipoint characteristic (programmable V/f characteristic)

•    Flying restart

•    Slip compensation

•    Automatic restart facility following mains failure or fault

•    Internal PI controller for simple process control

•    Programmable acceleration/deceleration, 0 s to 650 s

•    Ramp smoothing

•    Fast current limit (FCL) for trip-free operation

•    Fast, repeatable digital input response time

•    Fine adjustment using a high resolution 10-bit analog input

•    Compound braking for rapid controlled braking

•    Four skip frequencies

•    Removable "Y" capacitor for use on IT systems (with non-grounded mains supplies, the “Y” capacitor must be removed and an output choke installed)

Protection features

•    Overload current 1.5 x rated output current (i.e. 150 % overload capability) for 60 s, cycle time 300 s

•    Overvoltage/undervoltage protection

•    Inverter overtemperature protection

•    Motor protection using PTC via digital input (possible with supplementary circuit)

•    Earth fault protection

•    Short-circuit protection

•    I 2 t motor thermal protection

•    Locked motor protection

•    Stall prevention

•    Parameter interlock

Technical specifications

Technical data

MICROMASTER 420

Mains voltage and power ranges

200 V to 240 V 1 AC ±10 %

0.12 kW to 3 kW

200 V to 240 V 3 AC ±10 %

0.12 kW to 5.5 kW

380 V to 480 V 3 AC ±10 %

0.37 kW to 11 kW

Power frequency

47 Hz to 63 Hz

Output frequency

0 Hz to 650 Hz

Power factor

≥ 0.95

Inverter efficiency

96 % to 97 % (Further information is available on the Internet at: http://support.automation.siemens.com/WW/view/en/22978972)

Overload capability

Overload current 1.5 x rated output current (i.e. 150 % overload capability) for 60 s, cycle time 300 s

Inrush current

Less than rated input current

Control method

Linear V/f characteristic; quadratic V/f characteristic; multipoint characteristic (programmable V/f characteristic); flux current control (FCC)

Pulse frequency

16 kHz (standard with 230 V 1/3 AC) 4 kHz (standard with 400 V 3 AC) 2 kHz to 16 kHz (in 2 kHz steps)

Fixed frequencies

7, programmable

Skip frequency ranges

4, programmable

Setpoint resolution

0.01 Hz digital 0.01 Hz serial 10 bit analog

Digital inputs

3 fully programmable isolated digital inputs; switchable PNP/NPN

Analog input

1, for setpoint or PI controller (0 V to 10 V, scaleable or for use as 4th digital input)

Relay outputs

1, programmable, 30 V DC/5 A (resistive load); 250 V AC/2 A (inductive load)

Analog output

1, programmable (0 mA to 20 mA)

Serial interfaces

RS-485, optional RS-232

Motor cable lengths

 
  • without output choke

max. 50 m (shielded) max. 100 m (unshielded)

  • with output choke

see variant dependent options

Electromagnetic compatibility

Inverter available with internal EMC filter Class A; available as options are EMC filters to EN 55 011, Class A or Class B

Braking

DC braking, compound braking

Degree of protection

IP20

Operating temperature

–10 °C to +50 °C (+14 °F to +122 °F)

Storage temperature

–40 °C to +70 °C (–40 °F to +158 °F)

Relative humidity

95 % (non-condensing)

Installation altitude

Up to 1000 m above sea level without derating

Standard SCCR (Short Circuit Current Rating) 1)

10 kA

Protection features for

• Undervoltage

• Overvoltage

• Overload

• Earth faults

• Short circuit

• Stall prevention

• Locked motor protection

• Motor overtemperature

• Inverter overtemperature

• Parameter interlock

Compliance with standards

UL, cUL, CE, c-tick

CE marking

Conformity with low-voltage directive 73/23/EEC

Cooling-air volumetric flow required, dimensions and weights (without options)

Frame size (FS)

Cooling-air volumetric flow required (l/s)/(CFM)

H x W x D (mm)

Weight, approx. (kg)

A

4.8/10.2

173 x 73 x 149

1.0

B

24/51

202 x 149 x 172

3.3

C

54.9/116.3

245 x 185 x 195

5.0

 

CFM: Cubic Feet per Minute

   

1) Applies to industrial control cabinet installations to NEC article 409/UL 508A. For further information, visit us on the Internet at: http://support.automation.siemens.com/WW/view/en/23995621

Derating data

Pulse frequency

Output (for 400 V 3 AC)

Rated output current in A for a pulse frequency of

kW

4 kHz

6 kHz

8 kHz

10 kHz

12 kHz

14 kHz

16 kHz

0.37

1.2

1.2

1.2

1.2

1.2

1.2

1.1

0.55

1.6

1.6

1.6

1.6

1.6

1.6

1.1

0.75

2.1

2.1

2.1

2.1

1.6

1.6

1.1

1.1

3.0

3.0

2.7

2.7

1.6

1.6

1.1

1.5

4.0

4.0

2.7

2.7

1.6

1.6

1.1

2.2

5.9

5.9

5.1

5.1

3.6

3.6

2.6

3.0

7.7

7.7

5.1

5.1

3.6

3.6

2.6

4.0

10.2

10.2

6.7

6.7

4.8

4.8

3.6

5.5

13.2

13.2

13.2

13.2

9.6

9.6

7.5

7.5

19.0

18.4

13.2

13.2

9.6

9.6

7.5

11

26.0

26.0

17.9

17.9

13.5

13.5

10.4

Compliance with standards

CE marking

The MICROMASTER inverters meet the requirements of the Low-Voltage Directive 73/23/EEC.

Low-voltage directive

The inverters comply with the following standards listed in the Official Journal of the European Communities:

•    EN 60 204

Safety of machinery, electrical equipment of machines

•    EN 61 800-5-1

Electrical power drive systems with variable speed - Part 5-1: Requirements regarding safety - electrical, thermal and energy requirements

Machine directive

The inverters are suitable for installation in machines. Compliance with the machine directive 89/392/EEC requires a separate certificate of conformity. This must be furnished by the plant

constructor or the installer of the machine.

EMC directive

•    EN 61 800-3

Variable-speed electric drives

Part 3: EMC product standard including special test procedure.

The new EMC product standard EN 61 800-3 applies to electrical drive systems as of July 1, 2005. The transition period for the preceding standard EN 61 800-3/A11 dated February 2001 ends on

October 1, 2007. The following explanations apply to frequency inverters of the 6SE6 series from Siemens:

•    The EMC product standard EN 61 800-3 does not apply directly to a frequency inverter but to a PDS (Power Drive System), which comprises the complete circuitry, motor and cables in addition

to the inverter.

•    As a rule, frequency inverters are only supplied to qualified technical specialists for installation in machines or plants. A frequency inverter must therefore only be considered as a component

which, as such, is not subject to the EMC product standard EN 61 800-3. However, the inverter's instruction manual specifies the conditions under which the product standard can be complied with

if the frequency inverter is expanded to become a PDS. For a PDS, the EMC directive in the EU is complied with through observance of the product standard EN 61 800-3 for variable-speed

electrical drive systems. The frequency inverters on their own do not generally require marking according to the EMC directive.

•    The new EN 61 800-3 of July 2005 no longer distinguishes between "general availability" and "restricted availability". Instead, different categories, namely C1 to C4, are defined according to the

environment of the PDS at the place of use:

•    Category C1:

Drive systems for rated voltages of < 1000 V for use in the first environment

•    Category C2:

Fixed-location drive systems which are not connected by means of plug-in devices, for rated voltages of < 1000 V. if used in the first environment, installation and start-up may only be carried out

by qualified EMC personnel. Warning information must be provided.

•    Category C3:

Drive systems for rated voltages of < 1000 V, solely for use in the second environment. Warning information must be provided.

•    Category C4:

Drive systems for rated voltages of ≥ 1000 V or for rated currents of ≥ 400 A or for use in complex systems in the second environment. An EMC plan must be drawn up.

•    In the EMC product standard EN 61 800-3, limits for conducted interference voltages and radiated interference are also indicated for the so-called "second environment" (= industrial power

supply systems which do not supply households). These limits are lower than the limits of filter class A according to EN 55 011. The use of unfiltered inverters in an industrial environment is

permissible provided they are part of a system that is equipped with line filters on the higher-level infeed side.

•    With MICROMASTER, power drive systems (PDS) which comply with EMC product standard EN 61 800-3 can be installed (see the installation instructions in the product documentation). The

table entitled "Overview of MICROMASTER components and PDS categories" and the MICROMASTER ordering documents show which components the respective PDS installation supports directly.  

•    In general, a distinction must be made between the product standards for electrical drive systems (PDS) of the EN 61 800 series of standards (of which Part 3 covers EMC topics) and the

product standards for devices/systems/machines etc. This will probably not result in any changes in the practical use of frequency inverters. Since frequency inverters are always part of a PDS and

the latter is part of a machine, the manufacturer of the machine must observe various standards depending on the type of machine and the environment, e.g. EN 61 000-3-2 for power supply

harmonics and EN 55 011 for radio interference. The PDS product standard alone is therefore inadequate or irrelevant.

•    With regard to compliance with limits for power supply harmonics, the EMC product standard EN 61 800-3 for PDS refers to compliance with the EN 61 000-3-2 and EN 61 000-3-12 standards.

•    Irrespective of configuration with MICROMASTER and its components, the machine builder can also modify the machines in other ways in order to comply with the EMC directive of the EU. As a

rule, the EMC directive of the EU is observed through compliance with the EMC product standards applicable to the machine. If they are not available, the generic standards such as DIN EN 61

000-x-x can be used instead. What is important is that the conducted interference and the radiated interference voltages at the power-supply connection point and outside the machine remain

below the corresponding limits. What technical means are used to ensure this is not prescribed.

Name Type Format Size Download
mm420opieng Manual pdf 11/7 MB
mm420plisteng Manual pdf 3/45 MB
Name Type Format Size Download
DA51-2-2007-2008-en catalog pdf 4/95 MB

 

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