• The VLT® Safe Torque Off Operating Guide describes how to use Danfoss VLT® drives in functional safety applications. This manual is supplied with the drive when the Safe Torque Off option is present.
When designing AC drives, some residual dangers cannot be avoided constructively. One example is the discharge time, which is very important to observe to avoid potential death or serious injury. For the Danfoss VLT® drives, the discharge time is from 4–40 minutes depending on the drive size.
Approvals and Certifications 3 Approvals and Certifications 3.1 Regulatory/Compliance Approvals This section provides a brief description of the various approvals and certifications that are on Danfoss VLT® drives. Not all approvals are on all drives. N O T I C E IMPOSED LIMITATIONS ON THE OUTPUT FREQUENCY From software version X.XX onwards, the output frequency of the drive is limited to 590 Hz due to export control regulations.
Machinery Directive. Drives without a functional safety function do not fall under the Machinery Directive. If a drive is inte- grated into a machinery system, Danfoss can provide information on safety aspects relating to the drive. When drives are used in machines with at least 1 moving part, the machine manufacturer must provide a declaration stating compliance with all relevant statutes and safety measures.
IP (Ingress Protection) ratings outlined by the IEC (International Electrotechnical Commission) in the rest of the world. The standard Danfoss VLT® drive series are available in various enclosure protections to meet the requirements of IP00 (Chassis), IP20 (Protected chassis), IP21 (NEMA Type 1), or IP54 (NEMA Type 12). In this manual, NEMA Type is written as Type, for example, IP21/Type 1.
Product Family Overview 4 Product Family Overview 4.1 VLT® Drives Danfoss offers 3 types of AC drives in different-sized enclosures for a wide range of applications, with power ratings from 0.25–1200 kW (0.34–1350 hp). Standalone drives (frequency converters) The Danfoss standalone drives are so robust that they can be mounted outside of cabinets virtually anywhere, even right beside the motor.
It is now possible to determine the total losses of a system for the 8 operating points defined in the standard, including the part load operation, via a simple addition of power losses. Danfoss helps its customers to avoid having to rely on system solution providers, to ensure that their systems will retain a competitive advantage also in the future.
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AC drive to calculate the efficiency class and ™ part load efficiency for a Danfoss drive, either for a standalone drive (CDM) or for a drive with a motor (PDS). VLT® Motion Control Tool MCT 10 The MCT 10 software is designed for setup, commissioning and servicing of the AC drive.
Danfoss offers drives in different enclosure types for a wide range of applications. Standalone AC drives The Danfoss standalone AC drives are so robust that they can be mounted outside of cabinets virtually anywhere, even right beside the motor. Equipped for the toughest of environment, they suit any application.
EC motors, and synchronous reluctance motors, need regulation with AC drives. Many motors cannot be operated directly from the 3-phase standard power supply. The Danfoss VLT® drives can control multiple motor technologies: •...
IE4 (Super premium efficiency). IE = Internation efficiency. These motor types can all be operated with Danfoss VLT® drives. More information on this topic can be found in the publication Motor Technologies for Higher Efficiency in Applications. This docu- ment can be downloaded from www.danfoss.com.
Illustration 20: Mounting of CM Cores Inside the Motor Terminal Box To ensure minimal bearing currents in the motor, Danfoss recommends ordering the drive with output motor filters as a power op- tion.
Illustration 21: Motor Speed Coasts to Stop After Activation of STO 5.3 Maintenance Functions Danfoss VLT® drives feature preventive and condition-based monitoring functions. 5.3.1 Preventive Maintenance Schedule maintenance based on a running hours counter. When planned maintenance occurs, the drive shows a message. Action flags can be transferred via fieldbus.
[5] Motor Check, the drive automatically detects when the motor is disconnected. The drive then issues Warning 3, No Motor and resumes operation when the motor is connected again. Danfoss recommends not to use this feature for 525–690 V drives connected to an IT mains network.
EN 60079-7 Illustration 32: Motor Nameplate showing Drive Requirements When matching drive and motor, Danfoss specifies the following extra requirements to ensure adequate motor thermal protection: • Do not exceed the maximum allowed ratio between drive size and motor size. The typical value is I ≤...
• Power back-up: If there was mains failure, all Danfoss VLT® drives can be supplied through the DC link from a back-up. The application can thus continue running or go through a controlled shutdown process. 6.4.1 Preconditions and Special Conditions Before considering load sharing, ensure that the following preconditions are met: •...
Drives can only ensure compliance to EMC Directive when end users connect combinations of Danfoss Drives products as descri- bed in our technical documentation. If any third-party products are connected to the load share or other DC terminals on the AC drives, Danfoss Drives cannot guaran- tee that the EMC requirements are fulfilled.
Design Guide Options and Accessories Overview 7 Options and Accessories Overview 7.1 Introduction Danfoss offers an extensive range of options and accessories. This chapter provides an overview of the different hardware options and accessories for the VLT FC drive series: ®...
Design Guide Options and Accessories Overview By connecting the AHF 005 or AHF 010 in front of a Danfoss VLT® drive, the total harmonic current distortion generated back to the mains is reduced to 5% (AHF 005) and 10% (AHF 010).
Brake resistors are used to dissipate the excess energy resulting from the regenerative braking. The resistor is released based on its ohmic value, its power dissipation rate, and its physical size. Danfoss offers a wide variety of different resistors that are specially designed for Danfoss drives.
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For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
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For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
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For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
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For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
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For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecosmart on www. danfoss.com. For efficiency class see 8.4.1 Environment. Efficiency measured at nominal current. For more detailed efficiency values and part load losses according IEC/EN 61800-9-2 refer to mydrive ecos- mart on www.
• Shield the drive against direct sunlight, preferably by using the weather shield provided by Danfoss. The weather shield is de- signed to provide more protection of outdoor rated drives, when there is a risk of snow collecting on the top of the drive or excessive rain, which could subcool the drive, leading to internal condensation.
EN/IEC 60068-2-36. These tests subject the unit to 0.7 g forces over the range of 18–1000 Hz random in 3 directions for 2 hours. All Danfoss VLT® drives comply with requirements that correspond to these conditions when the unit is wall or floor mounted and when the unit is moun- ted within panels bolted to walls or to floors.
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Illustration 58: Derating of Output Current Based on Altitude at T AMB,MAX At altitudes above 2000 m (6561 ft), contact Danfoss regarding PELV. Alternatively, lower the ambient temperature at high altitudes and thereby ensure 100% output current at high altitudes. As an ex- ample of how to read the graph, the situation at 2000 m (6561 ft) is elaborated for an enclosure size B with T = 50 °C (122 °F).
DC link and to reduce the ground capacity currents, according to IEC 61800-3. If optimum EMC performance is nee- ded, or parallel motors are connected, or the motor cable length is above 25 m (82 ft), Danfoss recommends setting parameter 14-50 RFI Filter to [1] On.
Drives can only ensure compliance to EMC Directive when the end user connects combinations of Danfoss Drives products as described in our technical documentation. If any third-party products are connected to the load share or other DC terminals on the AC drives, Danfoss Drives cannot guaran- tee that the EMC requirements are fulfilled.
10.6.1 Fuse Recommendations Fuses ensure that possible damage to the drive is limited to damages inside the unit. Danfoss recommends fuses and/or circuit breakers on the supply side as protection. For further information, see Application Note Fuses and Circuit Breakers.
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Pmotor N O T I C E The brake resistor circuit resistance selected should not be lower than what Danfoss recommends respecting the current limits. N O T I C E If a higher value is selected, the brake energy is reduced accordingly to a value below 150%.
Example: Assume a 160 kW, 380–480/500 V AC drive at 25% load at 50% speed. The graph shows 0.97 - the rated efficiency for a 160 kW drive is 0.98. The actual efficiency is then: 0.97x0.98=0.95. The MyDrive ecoSmart tool helps to calculate the efficiency, refer to www.ecosmart.danfoss.com. ® ™ Efficiency of the motor (η...
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100 m (328 ft) for phase-neutral, 150 m (492 ft) for phase-to-phase (but not from TT or TN). Single-phase drives are not intended for 2-phase supply from a TT or TN network. T7, 37–90 kW complies with class A group 1 with 25 m (82 ft) motor cable. Some restrictions for the installation apply (contact Danfoss for details). Enclosure size B2.
Drives can only ensure compliance to EMC Directive when end users connect combinations of Danfoss Drives products as descri- bed in our technical documentation. If any third-party products are connected to the load share or other DC terminals on the AC drives, Danfoss Drives cannot guaran- tee that the EMC requirements are fulfilled.
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There is a risk for overvoltage. Isolation between components and critical parts could be insufficient and may not comply with PELV requirements. Use external protective devices or galvanic isolation. For installations above 2000 m (6500 ft) altitude, contact Danfoss re- garding protective extra low voltage (PELV) compliance.
According to IEC 61000-3-12:2011 The value depends on voltage range, power size and other factors. Please contact Danfoss to get information on specific values. Table 102: Typical Harmonic Emission Values for VLT® Drives FC 102, FC 103, FC 202, FC 302 above 90 kW...
(no limit applies because currents are above 75A) According to IEC 61000-3-12:2011 The value depends on voltage range, power size and other factors. Please contact Danfoss to get information on specific values. N O T I C E It is the responsibility of the installer or user of the equipment to ensure that the equipment is connected only to a supply with a...
11 Basic Operating Principles 11.1 Introduction This chapter provides an overview of the primary assemblies and circuitry of a Danfoss VLT® drive. It describes the internal electrical and signal processing functions. A description of the internal control structure is also included.
Drive Configurator automatically generates an 8-digit sales number to be delivered to the local sales office. Furthermore, it is possi- ble to establish a project list with several products and send it to a Danfoss sales representative. The Drive Configurator can be found on the global website: www.danfoss.com/drives.
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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. All trademarks in this material are property of the respective companies.
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