The design guide provides technical information to
understand the capabilities of the drive for integration into
motor control and monitoring systems.
VLT® is a registered trademark.
1.2 Additional Resources
Other resources are available to understand advanced
drive operation, programming, and directives compliance.
The operating guide provides detailed information
•
for the installation and start-up of the drive.
The programming guide provides greater detail on
•
how to work with parameters and includes many
application examples.
®
The VLT
•
describes how to use Danfoss drives in functional
safety applications. This manual is supplied with
the drive when the Safe Torque O option is
present.
The VLT® Brake Resistor MCE 101 Design Guide
•
describes how to select the optimal brake resistor.
Safe Torque O Operating Guide
Document and Software Version
1.3
This manual is regularly reviewed and updated. All
suggestions for improvement are welcome. Table 1.1 shows
the document version and the corresponding software
version.
EditionRemarksSoftware
version
MG16C3xxRemoved D1h–D8h content and
implemented new structure.
Table 1.1 Document and Software Version
5.11
1.4 Conventions
Numbered lists indicate procedures.
•
Bullet lists indicate other information and
•
description of illustrations.
Italicized text indicates:
•
-Cross-reference.
-Link.
-Footnote.
-Parameter name, parameter group
name, parameter option.
All dimensions in drawings are in mm (in).
•
An asterisk (*) indicates a default setting of a
•
parameter.
11
The VLT® Advanced Harmonic Filters AHF 005/AHF
•
010 Design Guide describes harmonics, various
mitigation methods, and the operating principle
of the advanced harmonics lter. This guide also
describes how to select the correct advanced
harmonics lter for a particular application.
The Output Filters Design Guide explains why it is
•
necessary to use output lters for certain
applications, and how to select the optimal dU/dt
or sine-wave lter.
Optional equipment is available that can change
•
some of the information described in these
publications. Be sure to see the instructions
supplied with the options, for specic
requirements.
Supplementary publications and manuals are available
from Danfoss. See drives.danfoss.com/knowledge-center/technical-documentation/ for listings.
Indicates a potentially hazardous situation that could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that could
result in minor or moderate injury. It can also be used to
alert against unsafe practices.
NOTICE
Indicates important information, including situations that
can result in damage to equipment or property.
2.2 Qualied Personnel
Only qualied personnel are allowed to install or operate
this equipment.
WARNING
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain
charged even when the drive is not powered. High
voltage can be present even when the warning LED
indicator lights are o. Failure to wait 40 minutes after
power has been removed before performing service or
repair work can result in death or serious injury.
1.Stop the motor.
2.Disconnect AC mains and remote DC-link
supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
3.Disconnect or lock motor.
4.Wait 40 minutes for the capacitors to discharge
fully.
5.Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that the capacitors are fully
discharged.
Qualied personnel are dened as trained sta, who are
authorized to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Also, the personnel must be familiar with the
instructions and safety measures described in this manual.
Safety Precautions
2.3
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, load sharing, or permanent motors.
Failure to use qualied personnel to install, start up, and
maintain the drive can result in death or serious injury.
Only qualied personnel must install, start up,
•
and maintain the drive.
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the
drive properly can result in death or serious injury.
Ensure the correct grounding of the equipment
•
by a certied electrical installer.
WARNING
FIRE HAZARD
Brake resistors get hot during and after braking. Failure
to place the brake resistor in a secure area can result in
property damage and/or serious injury.
Ensure that the brake resistor is placed in a
•
secure environment to avoid re risk.
Do not touch the brake resistor during or after
•
braking to avoid serious burns.
NOTICE
MAINS SHIELD SAFETY OPTION
A mains shield option is available for enclosures with a
protection rating of IP21/IP54 (Type 1/Type 12). The
mains shield is a cover installed inside the enclosure to
protect against the accidental touch of the power
terminals, according to BGV A2, VBG 4.
To prevent spark formation in accordance with the
European Agreement concerning International Carriage of
Dangerous Goods by Inland Waterways (ADN), take
precautions for drives with protection rating of IP00
(Chassis), IP20 (Chassis), IP21 (Type 1), or IP54 (Type 12).
Do not install a mains switch.
•
Ensure that parameter 14-50 RFI Filter is set to
•
[1] On.
Remove all relay plugs marked RELAY. See
•
Illustration 2.1.
Check which relay options are installed, if any.
•
The only allowed relay option is VLT® Extended
Relay Card MCB 113.
This section provides a brief description of the various
approvals and certications that are found on Danfoss
33
drives. Not all approvals are found on all drives.
3.1 Regulatory/Compliance Approvals
NOTICE
IMPOSED LIMITATIONS ON THE OUTPUT
FREQUENCY
From software version 3.92 onwards, the output
frequency of the drive is limited to 590 Hz due to export
control regulations.
3.1.1.1 CE Mark
The CE mark (Communauté Européenne) indicates that the
product manufacturer conforms to all applicable EU
directives. The EU directives applicable to the design and
manufacture of drives are listed in Table 3.1.
NOTICE
The CE mark does not regulate the quality of the
product. Technical specications cannot be deduced from
the CE mark.
EU DirectiveVersion
Low Voltage Directive2014/35/EU
EMC Directive2014/30/EU
The purpose of the EMC (electromagnetic compatibility)
Directive is to reduce electromagnetic interference and
enhance immunity of electrical equipment and installations. The basic protection requirement of the EMC
Directive is that devices that generate electromagnetic
interference (EMI), or whose operation can be aected by
EMI, must be designed to limit the generation of electromagnetic interference. The devices must have a suitable
degree of immunity to EMI when properly installed,
maintained, and used as intended.
Electrical equipment devices used alone or as part of a
system must bear the CE mark. Systems do not require the
CE mark, but must comply with the basic protection
requirements of the EMC Directive.
Machinery Directive
The aim of the Machinery Directive is to ensure personal
safety and avoid property damage to mechanical
equipment used in its intended application. The Machinery
Directive applies to a machine consisting of an aggregate
of interconnected components or devices of which at least
1 is capable of mechanical movement.
Drives with an integrated safety function must comply with
the Machinery Directive. Drives without a safety function
do not fall under the Machinery Directive. If a drive is
integrated 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.
Table 3.1 EU Directives Applicable to Drives
1) Machinery Directive conformance is only required for drives with
an integrated safety function.
NOTICE
Drives with an integrated safety function, such as Safe
Torque O (STO), must comply with the Machinery
Directive.
Declarations of conformity are available on request.
Low Voltage Directive
Drives must be CE-labeled in accordance with the Low
Voltage Directive of January 1, 2014. The Low Voltage
Directive applies to all electrical equipment in the 50–
1000 V AC and the 75–1500 V DC voltage ranges.
The aim of the directive is to ensure personal safety and
avoid property damage when operating electrical
equipment that is installed, maintained, and used as
intended.
The ErP Directive is the European Ecodesign Directive for
energy-related products, including drives. The aim of the
directive is to increase energy eciency and the level of
protection of the environment, while increasing the
security of the energy supply. Environmental impact of
energy-related products includes energy consumption
throughout the entire product life cycle.
3.1.1.3 UL Listing
The Underwriters Laboratory (UL) mark certies the safety
of products and their environmental claims based on
standardized testing. Drives of voltage T7 (525–690 V) are
UL-certied for only 525–600 V.
Page 11
Approvals and Certication...Design Guide
3.1.1.4 CSA/cUL
The CSA/cUL approval is for AC drives of voltage rated at
600 V or lower. The standard ensures that, when the drive
is installed according to the provided operating/installation
guide, the equipment meets the UL standards for electrical
and thermal safety. This mark certies that the product
performs to all required engineering specications and
testing. A certicate of compliance is provided on request.
3.1.1.5 EAC
The EurAsian Conformity (EAC) mark indicates that the
product conforms to all requirements and technical
regulations applicable to the product per the EurAsian
Customs Union, which is composed of the member states
of the EurAsian Economic Union.
The EAC logo must be both on the product label and on
the packaging label. All products used within the EAC area,
must be bought at Danfoss inside the EAC area.
3.1.1.6 UKrSEPRO
dierent marine classication societies have certied
Danfoss drive series.
To view or print marine approvals and certicates, go to
the download area at http://drives.danfoss.com/industries/marine-and-oshore/marine-type-approvals/#/.
3.1.2 Export Control Regulations
Drives can be subject to regional and/or national export
control regulations.
An ECCN number is used to classify all drives that are
subject to export control regulations.
The ECCN number is provided in the documents
accompanying the drive.
In case of re-export, it is the responsibility of the exporter
to ensure compliance with the relevant export control
regulations.
33
UKrSEPRO certicate ensures quality and safety of both
products and services, in addition to manufacturing
stability according to Ukrainian regulatory standards. The
UkrSepro certicate is a required document to clear
customs for any products coming into and out of the
territory of Ukraine.
3.1.1.7 TÜV
TÜV SÜD is a European safety organization which certies
the functional safety of the drive in accordance to EN/IEC
61800-5-2. The TÜV SÜD both tests products and monitors
their production to ensure that companies stay compliant
with their regulations.
3.1.1.8 RCM
The Regulatory Compliance Mark (RCM) indicates
compliance with telecommunications and EMC/radiocommunications equipment per the Australian
Communications and Media Authorities EMC labeling
notice. RCM is now a single compliance mark covering
both the A-Tick and the C-Tick compliance marks. RCM
compliance is required for placing electrical and electronic
devices on the market in Australia and New Zealand.
3.1.1.9 Marine
In order for ships and oil/gas platforms to receive a
regulatory license and insurance, 1 or more marine certi-cation societies must certify these applications. Up to 12
The VLT® drive series are available in various enclosure protection to accommodate the needs of the application. Enclosure
protection ratings are provided based on 2 international standards:
UL type validates that the enclosures meet NEMA (National Electrical Manufacturers Association) standards. The
•
construction and testing requirements for enclosures are provided in NEMA Standards Publication 250-2003 and UL
33
Standard Danfoss VLT® drive series are available in various enclosure protections to meet the requirements of IP00 (Chassis),
IP20 (Protected chassis) or IP21 (UL Type 1), or IP54 (UL Type 12). In this manual, UL Type is written as Type. For example,
IP21/Type 1.
UL type standard
Type 1 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact
with the enclosed units and to provide a degree of protection against falling dirt.
Type 12 – General-purpose enclosures are intended for use indoors to protect the enclosed units against the following:
50, Eleventh Edition.
IP (Ingress Protection) ratings outlined by IEC (International Electrotechnical Commission) in the rest of the world.
•
Fibers
•
Lint
•
Dust and dirt
•
Light splashing
•
Seepage
•
Dripping and external condensation of noncorrosive liquids
•
There can be no holes through the enclosure and no conduit knockouts or conduit openings, except when used with oilresistant gaskets to mount oil-tight or dust-tight mechanisms. Doors are also provided with oil-resistant gaskets. In addition,
enclosures for combination controllers have hinged doors, which swing horizontally and require a tool to open.
IP standard
Table 3.2 provides a cross-reference between the 2 standards. Table 3.3 demonstrates how to read the IP number and then
denes the levels of protection. The drives meet the requirements of both.
NEMA and ULIP
ChassisIP00
Protected chassisIP20
Type 1IP21
Type 12IP54
0–No protection.
1–Protected to 50 mm (2.0 in). No hands would be able to get into the enclosure.
2–Protected to 12.5 mm (0.5 in). No ngers would be able to get into the enclosure.
3–Protected to 2.5 mm (0.1 in). No tools would be able to get into the enclosure.
4–Protected to 1.0 mm (0.04 in). No wires would be able to get into the enclosure.
5–Protected against dust – limited entry
6–Protected totally against dust
–0No protection
–1Protected from vertical dripping water
–2
–3
–4Protected from splashing water
–5Protected from water jets
–6Protected from strong water jets
–7Protected from temporary immersion
–8Protected from permanent immersion
Table 3.3 IP Number Breakdown
Level of protection
Protected from dripping water at 15° angle
Protected from water at 60° angle
The Danfoss VLT® drives described in this manual are available as free-standing, wall-mounted, or cabinet-mounted units.
Each VLT® drive is congurable, compatible, and eciency-optimized for all standard motor types, which avoids the
restrictions of motor-drive package deals. These drives come in 2 front-end congurations: 6-pulse and 12-pulse.
44
Benets of VLT® 6-pulse drives
Available in various enclosure sizes and protection ratings.
•
98% eciency reduces operating costs.
•
Unique back-channel cooling design reduces the need for more cooling equipment, resulting in lower installation
•
and recurring costs.
Lower power consumption for control room cooling equipment.
•
Reduced ownership costs.
•
Consistent user interface across the entire range of Danfoss drives.
•
Application-oriented start-up wizards.
•
Multi-language user interface.
•
Benets of VLT® 12-pulse drives
The VLT® 12-pulse is a high
components, which often require network analysis to avoid potential system resonance problems. The 12-pulse is built with
the same modular design as the popular 6-pulse VLT® drive. For more harmonic reduction methods, see the VLT® Advanced
Harmonic Filter AHF 005/AHF 010 Design Guide.
The 12-pulse drives provide the same benets as the 6-pulse drives in addition to being:
Robust and highly stable in all network and operating conditions.
•
Ideal for applications where stepping down from medium voltage is required or where isolation from the grid is
1) All power ratings are taken at normal overload.
Output is measured at 690 V (kW) and 575 V (hp).
Page 15
Product OverviewDesign Guide
4.3 Overview of Enclosures, 380–480 V
Enclosure sizeE1E2
Power rating
Output at 400 V (kW)355–450355–450
Output at 460 V (hp)500–600500–600
Front-end conguration
6-pulseSS
12-pulse––
Protection rating
IPIP21/54IP00
UL typeType 1/12Chassis
Hardware options
Stainless steel back channel–O
Mains shieldingO–
Space heater and thermostat––
Cabinet light with power outlet––
RFI lter (Class A1)OO
NAMUR terminals––
Insulation resistance monitor (IRM)––
Residual current monitor (RCM)––
1)
2)
44
Brake chopper (IGBTs)OO
Safe Torque OOO
Regen terminalsOO
Common motor terminals––
Emergency stop with Pilz safety relay––
Safe Torque O with Pilz safety relay––
No LCP––
Graphical LCPSS
Numerical LCPOO
FusesOO
Load share terminalsOO
Fuses + load share terminalsOO
DisconnectOO
Circuit breakers––
Contactors––
Manual motor starters––
30 A, fuse-protected terminals––
24 V DC supply (SMPS, 5 A)OO
External temperature monitoring––
Dimensions
Height, mm (in)2000 (78.8)1547 (60.9)
Width, mm (in)600 (23.6)585 (23.0)
Depth, mm (in)494 (19.4)498 (19.5)
Weight, kg (lb)270–313 (595–690)234–277 (516–611)
Table 4.3 E1–E2 Drives, 380–480 V
1) All power ratings are taken at normal overload. Output is measured at 400 V (kW) and 460 V (hp).
2) S = standard, O = optional, and a dash indicates that the option is unavailable.
Output at 690 V (kW)450–630450–630
Output at 575 V (hp)450–650450–650
Front-end conguration
6-pulseSS
44
12-pulse––
Protection rating
IPIP21/54IP00
UL typeType 1/12Chassis
Hardware options
Stainless steel back channel–O
Mains shieldingO–
Space heater and thermostat––
Cabinet light with power outlet––
RFI lter (Class A1)OO
NAMUR terminals––
Insulation resistance monitor (IRM)––
Residual current monitor (RCM)––
Brake chopper (IGBTs)OO
Safe Torque OSS
Regen terminalsOO
Common motor terminals––
Emergency stop with Pilz safety relay––
Safe Torque O with Pilz safety relay––
No LCP––
Graphical LCPSS
Numerical LCPOO
FusesOO
Load share terminalsOO
Fuses + load share terminalsOO
DisconnectOO
Circuit breakers––
Contactors––
Manual motor starters––
30 A, fuse-protected terminals––
24 V DC supply (SMPS, 5 A)OO
External temperature monitoring––
Dimensions
Height, mm (in)2000 (78.8)1547 (60.9)
Width, mm (in)600 (23.6)585 (23.0)
Depth, mm (in)494 (19.4)498 (19.5)
Weight, kg (lb)263–313 (580–690)221–277 (487–611)
1)
2)
Table 4.6 E1–E2 Drives, 525–690 V
1) All power ratings are taken at normal overload. Output is measured at 690 V (kW) and 575 V (hp).
2) S = standard, O = optional, and a dash indicates that the option is unavailable.
USB in doorO–OOOOOOOOOO
LCP, numericalOOOOOOOOOOOO
LCP, graphical
LCP cable, 3 m (9 ft)OOOOOOOOOOOO
Mounting kit for numerical LCP
(LCP, fasteners, gasket, and cable)
Mounting kit for graphical LCP
(LCP, fasteners, gasket, and cable)
Mounting kit for all LCPs
(fasteners, gasket, and cable)
Top entry for motor cables––OOOOOOOOOO
Top entry for mains cables––OOOOOOOOOO
Top entry for mains cables with disconnect––––OO––––––
Top entry for eldbus cables–O––––––––––
Common motor terminals––OOOO––––––
NEMA 3R enclosure–O––––––––––
PedestalOO––––––––––
Input options plateOO––––––––––
IP20 conversion–O––––––––––
Out top (only) cooling–O––––––––––
Back-channel cooling (in-back/out-back)OOOOOOOOOOOO
Back-channel cooling (in-bottom/out-top)–O––––––––––
1)
2)
E1E2F1F2F3F4F8F9F10F11F12F13
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
OOOOOOOOOOOO
44
Table 4.9 Available Kits for Enclosures E1–E2, F1–F4, and F8–F13
1) S = standard, O = optional, and a dash indicates that the kit is unavailable for that enclosure. For kit descriptions and part numbers, see
chapter 13.2 Ordering Numbers for Options/Kits.
2) The graphical LCP comes standard with enclosures E1–E2, F1–F4, and F8–F13. If more than 1 graphical LCP is required, the kit is available for
Automated operational features are active when the drive
is operating. Most of them require no programming or setup. The drive has a range of built-in protection functions
to protect itself and the motor when it runs.
For details of any set-up required, in particular motor
55
parameters, refer to the programming guide.
5.1.1 Short-circuit Protection
Motor (phase-to-phase)
The drive is protected against short circuits on the motor
side by current measurement in each of the 3 motor
phases. A short circuit between 2 output phases causes an
overcurrent in the inverter. The inverter is turned o when
the short circuit current exceeds the permitted value
(Alarm 16, Trip Lock).
Mains side
A drive that works correctly limits the current it can draw
from the supply. Still, it is recommended to use fuses
and/or circuit breakers on the supply side as protection if
there is component break-down inside the drive (rst
fault). Mains side fuses are mandatory for UL compliance.
NOTICE
To ensure compliance with IEC 60364 for CE or NEC 2009
for UL, it is mandatory to use fuses and/or circuit
breakers.
Brake resistor
The drive is protected from a short circuit in the brake
resistor.
Load sharing
To protect the DC bus against short circuits and the drives
from overload, install DC fuses in series with the load
sharing terminals of all connected units.
5.1.2 Overvoltage Protection
•
higher DC-link voltage.
Back EMF from PM motor operation. If coasted at
•
high RPM, the PM motor back EMF can
potentially exceed the maximum voltage
tolerance of the drive and cause damage. To help
prevent this situation, the value of
parameter 4-19 Max Output Frequency is automatically limited based on an internal calculation
based on the value of parameter 1-40 Back EMF at1000 RPM, parameter 1-25 Motor Nominal Speed,
and parameter 1-39 Motor Poles.
NOTICE
To avoid motor overspeeds (for example, due to
excessive windmilling eects), equip the drive with a
brake resistor.
The overvoltage can be handled either using a brake
function (parameter 2-10 Brake Function) and/or using
overvoltage control (parameter 2-17 Over-voltage Control).
Brake functions
Connect a brake resistor for dissipation of surplus brake
energy. Connecting a brake resistor allows a higher DC-link
voltage during braking.
AC brake is an alternative to improving braking without
using a brake resistor. This function controls an overmagnetization of the motor when the motor is acting as a
generator. Increasing the electrical losses in the motor
allows the OVC function to increase the braking torque
without exceeding the overvoltage limit.
NOTICE
AC brake is not as eective as dynamic braking with a
resistor.
Overvoltage control (OVC)
By automatically extending the ramp-down time, OVC
reduces the risk of the drive tripping due to an
overvoltage on the DC-link.
Motor-generated overvoltage
The voltage in the DC link is increased when the motor
acts as a generator. This situation occurs in following cases:
The load rotates the motor at constant output
•
frequency from the drive, that is, the load
generates energy.
During deceleration (ramp-down) if the inertia
•
moment is high, the friction is low, and the rampdown time is too short for the energy to be
dissipated as a loss throughout the drive system.
OVC can be activated for a PM motor with all control
core, PM VVC+, Flux OL, and Flux CL for PM Motors.
5.1.3 Missing Motor Phase Detection
The missing motor phase function (parameter 4-58 MissingMotor Phase Function) is enabled by default to avoid motor
damage if a motor phase is missing. The default setting is
1000 ms, but it can be adjusted for faster detection.
Page 23
Product FeaturesDesign Guide
5.1.4 Supply Voltage Imbalance Detection
Operation under severe supply voltage imbalance reduces
the lifetime of the motor and drive. If the motor is
operated continuously near nominal load, conditions are
considered severe. The default setting trips the drive if
there is supply voltage imbalance
(parameter 14-12 Function at Mains Imbalance).
5.1.5 Switching on the Output
Adding a switch to the output between the motor and the
drive is allowed, however fault messages can appear.
Danfoss does not recommend using this feature for 525–
690 V drives connected to an IT mains network.
5.1.6 Overload Protection
Torque limit
The torque limit feature protects the motor against
overload, independent of the speed. Torque limit is
controlled in parameter 4-16 Torque Limit Motor Mode andparameter 4-17 Torque Limit Generator Mode. The time
before the torque limit warning trips is controlled in
parameter 14-25 Trip Delay at Torque Limit.
Current limit
The current limit is controlled in parameter 4-18 Current
Limit, and the time before the drive trips is controlled in
parameter 14-24 Trip Delay at Current Limit.
Speed limit
Minimum speed limit: Parameter 4-11 Motor Speed Low
Limit [RPM] or parameter 4-12 Motor Speed Low Limit [Hz]
limit the minimum operating speed range of the drive.
Maximum speed limit: Parameter 4-13 Motor Speed HighLimit [RPM] or parameter 4-19 Max Output Frequency limit
the maximum output speed the drive can provide.
Electronic thermal relay (ETR)
ETR is an electronic feature that simulates a bimetal relay
based on internal measurements. The characteristic is
shown in Illustration 5.1.
Voltage limit
The inverter turns o to protect the transistors and the DC
link capacitors when a certain hard-coded voltage level is
reached.
Overtemperature
The drive has built-in temperature sensors and reacts
immediately to critical values via hard-coded limits.
5.1.7 Locked Rotor Protection
There can be situations when the rotor is locked due to
excessive load or other factors. The locked rotor cannot
produce enough cooling, which in turn can overheat the
motor winding. The drive is able to detect the locked rotor
situation with open-loop PM
control (parameter 30-22 Locked Rotor Detection).
ux control and PM VVC
+
5.1.8 Automatic Derating
The drive constantly checks for the following critical levels:
High temperature on the control card or heat
•
sink.
High motor load.
•
High DC-link voltage.
•
Low motor speed.
•
As a response to a critical level, the drive adjusts the
switching frequency. For high internal temperatures and
low motor speed, the drives can also force the PWM
pattern to SFAVM.
NOTICE
The automatic derating is dierent when
parameter 14-55 Output Filter is set to [2] Sine-Wave Filter
Fixed.
5.1.9 Automatic Energy Optimization
Automatic energy optimization (AEO) directs the drive to
monitor the load on the motor continuously and adjust
the output voltage to maximize eciency. Under light
load, the voltage is reduced and the motor current is
minimized. The motor benets from:
Increased eciency.
•
Reduced heating.
•
Quieter operation.
•
There is no need to select a V/Hz curve because the drive
automatically adjusts motor voltage.
5.1.10 Automatic Switching Frequency
Modulation
The drive generates short electrical pulses to form an AC
wave pattern. The switching frequency is the rate of these
pulses. A low switching frequency (slow pulsing rate)
causes audible noise in the motor, making a higher
switching frequency preferable. A high switching
frequency, however, generates heat in the drive that can
limit the amount of current available to the motor.
Automatic switching frequency modulation regulates these
conditions automatically to provide the highest switching
frequency without overheating the drive. By providing a
regulated high switching frequency, it quiets motor
operating noise at slow speeds, when audible noise control
is critical, and produces full output power to the motor
when required.
5.1.11 Automatic Derating for High
Switching Frequency
The drive is designed for continuous, full-load operation at
switching frequencies between 1.5–2 kHz for 380–480 V,
and 1–1.5 kHz for 525–690 V. The frequency range
depends on power size and voltage rating. A switching
frequency exceeding the maximum allowed range
generates increased heat in the drive and requires the
output current to be derated.
55
An automatic feature of the drive is load-dependent
switching frequency control. This feature allows the motor
to
benet from as high a switching frequency as the load
allows.
5.1.12 Power Fluctuation Performance
The drive withstands mains uctuations such as:
Transients.
•
Momentary drop-outs.
•
Short voltage drops.
•
Surges.
•
The drive automatically compensates for input voltages
±10% from the nominal to provide full rated motor voltage
and torque. With auto restart selected, the drive automatically powers up after a voltage trip. With ying start, the
drive synchronizes to motor rotation before start.
information regarding EMC performance, see
chapter 10.15.1 EMC Test Results.
5.1.16 Galvanic Isolation of Control
Terminals
All control terminals and output relay terminals are galvanically isolated from mains power, which completely
protects the controller circuitry from the input current. The
output relay terminals require their own grounding. This
isolation meets the stringent protective extra-low voltage
(PELV) requirements for isolation.
The components that make up the galvanic isolation
are:
Supply, including signal isolation.
•
Gatedrive for the IGBTs, trigger transformers, and
•
optocouplers.
The output current Hall eect transducers.
•
5.2 Custom Application Features
Custom application functions are the most common
features programmed in the drive for enhanced system
performance. They require minimum programming or setup. See the programming guide for instructions on
activating these functions.
5.2.1 Automatic Motor Adaptation
5.1.13 Resonance Damping
Resonance damping eliminates the high-frequency motor
resonance noise. Automatic or manually selected frequency
damping is available.
5.1.14 Temperature-controlled Fans
Sensors in the drive regulate the operation of the internal
cooling fans. Often, the cooling fans do not run during low
load operation, or when in sleep mode or standby. These
sensors reduce noise, increase eciency, and extend the
operating life of the fan.
5.1.15 EMC Compliance
Electromagnetic interference (EMI) and radio frequency
interference (RFI) are disturbances that can aect an
electrical circuit due to electromagnetic induction or
radiation from an external source. The drive is designed to
comply with the EMC product standard for drives IEC
61800-3 and the European standard EN 55011. Motor
cables must be shielded and properly terminated to
comply with the emission levels in EN 55011. For more
Automatic motor adaptation (AMA) is an automated test
procedure used to measure the electrical characteristics of
the motor. AMA provides an accurate electronic model of
the motor, allowing the drive to calculate optimal
performance and eciency. Running the AMA procedure
also maximizes the automatic energy optimization feature
of the drive. AMA is performed without the motor rotating
and without uncoupling the load from the motor.
5.2.2 Built-in PID Controller
The built-in proportional, integral, derivative (PID)
controller eliminates the need for auxiliary control devices.
The PID controller maintains constant control of closedloop systems where regulated pressure, ow, temperature,
or other system requirements must be maintained.
The drive can use 2 feedback signals from 2
devices, allowing the system to be regulated with dierent
feedback requirements. The drive makes control decisions
by comparing the 2 signals to optimize system
performance.
ETR calculates motor temperature by measuring current,
frequency, and operating time. The drive shows the
thermal load on the motor in percentage and can issue a
warning at a programmable overload setpoint.
Programmable options at the overload allow the drive to
stop the motor, reduce output, or ignore the condition.
Even at low speeds, the drive meets I2t Class 20 electronic
motor overload standards.
enter a specic curve to protect the Ex-e motor. See the
programming guide for set-up instructions.
5.2.4 Motor Thermal Protection for Ex-e
Motors
The drive is equipped with an ATEX ETR thermal
monitoring function for operation of Ex-e motors according
®
to EN-60079-7. When combined with an ATEX approved
PTC monitoring device such as the VLT® PTC Thermistor
Card MCB 112 or an external device, the installation does
not require an individual approval from an approbated
organization.
The ATEX ETR thermal monitoring function enables use of
an Ex-e motor instead of a more expensive, larger, and
heavier Ex-d motor. The function ensures that the drive
limits motor current to prevent overheating.
Requirements related to the Ex-e motor
Ensure that the Ex-e motor is approved for
•
operation in hazardous zones (ATEX zone 1/21,
ATEX zone 2/22) with drives. The motor must be
certied for the specic hazardous zone.
Install the Ex-e motor in zone 1/21 or 2/22 of the
•
hazardous zone, according to motor approval.
55
NOTICE
Install the drive outside the hazardous zone.
Ensure that the Ex-e motor is equipped with an
•
ATEX-approved motor overload protection device.
This device monitors the temperature in the
motor windings. If there is a critical temperature
level or a malfunction, the device switches o the
motor.
-
The VLT® PTC Thermistor MCB 112
option provides ATEX-approved
monitoring of motor temperature. It is a
prerequisite that the drive is equipped
Illustration 5.1 ETR Characteristics
The X-axis shows the ratio between I
nominal. The Y-axis shows the time in seconds before the
ETR cuts o and trips the drive. The curves show the
characteristic nominal speed, at twice the nominal speed
and at 0.2 x the nominal speed.
At lower speed, the ETR cuts o at lower heat due to less
cooling of the motor. In that way, the motor is protected
from being overheated even at low speed. The ETR feature
calculates the motor temperature based on actual current
and speed. The calculated temperature is visible as a
readout parameter in parameter 16-18 Motor Thermal.
A special version of the ETR is also available for EX-e
motors in ATEX areas. This function makes it possible to
with 3–6 PTC thermistors in series
according to DIN 44081 or 44082.
-Alternatively, an external ATEX-approved
PTC protection device can be used.
-Long cables (voltage peaks) or increased
mains voltage produce voltages
exceeding the maximum allowable
voltage at motor terminals.
-Minimum switching frequency of the
drive does not meet the requirement
stated by the motor manufacturer. The
minimum switching frequency of the
Page 26
130BD888.10
CONVERTER SUPPLY
VALID FOR 380 - 415V FWP 50Hz
3 ~ Motor
MIN. SWITCHING FREQ. FOR PWM CONV. 3kHz
l = 1.5XI
M,N
tOL = 10s tCOOL = 10min
MIN. FREQ. 5Hz MAX. FREQ. 85 Hz
PWM-CONTROL
f [Hz]
Ix/I
M,N
PTC °C DIN 44081/-82
Manufacture xx
EN 60079-0
EN 60079-7
СЄ 1180Ex-e ll T3
515255085
0.40.81.01.00.95
1
xЗ
2
3
4
Product Features
VLT® HVAC Drive FC 102
drive is shown as the default value in
parameter 14-01 Switching Frequency.
Compatibility of motor and drive
For motors certied according to EN-60079-7, a data list
including limits and rules is supplied by the motor
manufacturer as a datasheet, or on the motor nameplate.
During planning, installation, commissioning, operation,
and service, follow the limits and rules supplied by the
manufacturer for:
Minimum switching frequency.
•
Maximum current.
•
55
Illustration 5.2 shows where the requirements are indicated
on the motor nameplate.
Minimum motor frequency.
•
Maximum motor frequency.
•
5.2.5 Mains Drop-out
During a mains drop-out, the drive keeps running until the
DC-link voltage drops below the minimum stop level. The
minimum stop level is typically 15% below the lowest
rated supply voltage. The mains voltage before the dropout and the motor load determines how long it takes for
the drive to coast.
The drive can be
to dierent types of behavior during mains drop-out:
Trip lock once the DC link is exhausted.
•
Coast with ying start whenever mains return
•
(parameter 1-73 Flying Start).
Kinetic back-up.
•
Controlled ramp down.
•
Flying start
This selection makes it possible to catch a motor that is
spinning freely due to a mains drop-out. This option is
relevant for centrifuges and fans.
Kinetic back-up
This selection ensures that the drive runs as long as there
is energy in the system. For short mains drop-out, the
operation is restored after mains return, without bringing
the application to a stop or losing control at any time.
Several variants of kinetic back-up can be selected.
Congure the behavior of the drive at mains drop-out, in
parameter 14-10 Mains Failure and parameter 1-73 Flying
Start.
congured (parameter 14-10 Mains Failure)
1Minimum switching frequency
2Maximum current
3Minimum motor frequency
4Maximum motor frequency
Illustration 5.2 Motor Nameplate showing Drive Requirements
When matching drive and motor, Danfoss species the
following extra requirements to ensure adequate motor
thermal protection:
For further information, see the application example in
chapter 12 Application Examples.
between drive size and motor size. The typical
value is I
Consider all voltage drops from drive to motor. If
•
the motor runs with lower voltage than listed in
the U/f characteristics, current can increase,
triggering an alarm.
VLT, n
≤2xI
m,n
5.2.6 Automatic Restart
The drive can be programmed to restart the motor
automatically after a minor trip, such as momentary power
loss or uctuation. This feature eliminates the need for
manual resetting, and enhances automated operation for
remotely controlled systems. The number of restart
attempts and the duration between attempts can be
limited.
5.2.7 Full Torque at Reduced Speed
The drive follows a variable V/Hz curve to provide full
motor torque even at reduced speeds. Full output torque
can coincide with the maximum designed operating speed
of the motor. This drive diers from variable torque drives
and constant torque drives. Variable torque drives provide
reduced motor torque at low speed. Constant torque
drives provide excess voltage, heat, and motor noise at less
than full speed.
Page 27
. . .
. . .
Par. 13-11
Comparator Operator
Par. 13-43
Logic Rule Operator 2
Par. 13-51
SL Controller Event
Par. 13-52
SL Controller Action
130BB671.13
Coast
Start timer
Set Do X low
Select set-up 2
. . .
Running
Warning
Torque limit
Digital input X 30/2
. . .
=
TRUE longer than..
. . .
. . .
130BA062.14
State 1
13-51.0
13-52.0
State 2
13-51.1
13-52.1
Start
event P13-01
State 3
13-51.2
13-52.2
State 4
13-51.3
13-52.3
Stop
event P13-02
Stop
event P13-02
Stop
event P13-02
Product FeaturesDesign Guide
5.2.8 Frequency Bypass
In some applications, the system can have operational
speeds that create a mechanical resonance. This
mechanical resonance can generate excessive noise and
possibly damage mechanical components in the system.
The drive has 4 programmable bypass-frequency
bandwidths. The bandwidths allow the motor to step over
speeds that induce system resonance.
5.2.9 Motor Preheat
To preheat a motor in a cold or damp environment, a small
amount of DC current can be trickled continuously into the
motor to protect it from condensation and cold starts. This
function can eliminate the need for a space heater.
5.2.10 Programmable Set-ups
The drive has 4 set-ups that can be independently
programmed. Using multi-setup, it is possible to switch
between independently programmed functions activated
by digital inputs or a serial command. Independent set-ups
are used, for example, to change references, or for day/
night or summer/winter operation, or to control multiple
motors. The LCP shows the active set-up.
Set-up data can be copied from drive to drive by
downloading the information from the removable LCP.
5.2.11 Smart Logic Control (SLC)
Smart logic control (SLC) is a sequence of user-dened
actions (see parameter 13-52 SL Controller Action [x])
executed by the SLC when the associated user-dened
event (see parameter 13-51 SL Controller Event [x]) is
evaluated as TRUE by the SLC.
The condition for an event can be a particular status, or
that the output from a logic rule or a comparator operand
becomes TRUE. The condition leads to an associated action
as shown in Illustration 5.3.
Illustration 5.3 SLC Event and Action
Events and actions are each numbered and linked in pairs
(states), which means that when event [0] is fullled
(attains the value TRUE), action [0] is executed. After the 1
action is executed, the conditions of the next event are
evaluated. If this event is evaluated as true, then the
corresponding action is executed. Only 1 event is
evaluated at any time. If an event is evaluated as false,
nothing happens in the SLC during the current scan
interval and no other events are evaluated. When the SLC
starts, it only evaluates event [0] during each scan interval.
Only when event [0] is evaluated as true, the SLC executes
action [0] and starts evaluating the next event. It is
possible to program 1–20 events and actions.
When the last event/action has been executed, the
sequence starts over again from event [0]/action [0].
Illustration 5.4 shows an example with 4 event/actions:
Illustration 5.4 Order of Execution when 4 Events/Actions are
Programmed
Page 28
Par. 13-11
Comparator Operator
=
TRUE longer than.
. . .
. . .
Par. 13-10
Comparator Operand
Par. 13-12
Comparator Value
130BB672.10
. . .
. . .
. . .
. . .
Par. 13-43
Logic Rule Operator 2
Par. 13-41
Logic Rule Operator 1
Par. 13-40
Logic Rule Boolean 1
Par. 13-42
Logic Rule Boolean 2
Par. 13-44
Logic Rule Boolean 3
130BB673.10
120
100
80
60
40
20
0
20406080 100 120 140 160 180
120
100
80
60
40
20
020406080100 120 140 160 180
Volume %
Volume %
INPUT POWER %PRESSURE %
SYSTEM CURVE
FAN CURVE
A
B
C
130BA781.11
ENERGY
CONSUMED
Product Features
VLT® HVAC Drive FC 102
Comparators
Specic VLT® HVAC Drive Features
5.3
Comparators are used for comparing continuous variables
(output frequency, output current, analog input, and so on)
to xed preset values.
A drive takes advantage of the fact that centrifugal fans
and pumps follow the laws of proportionality for such
applications. For further information, see
chapter 5.3.1 Using a Drive for Energy Savings.
5.3.1 Using a Drive for Energy Savings
The clear advantage of using a drive for controlling the
speed of fans and pumps lies in the electricity savings.
55
Illustration 5.5 Comparators
Logic rules
Combine up to 3 boolean inputs (TRUE/FALSE inputs) from
timers, comparators, digital inputs, status bits, and events
using the logical operators AND, OR, and NOT.
When comparing with alternative control systems and
technologies, a drive is the optimum energy control system
for controlling fan and pump systems.
Illustration 5.6 Logic Rules
5.2.12 Safe Torque O
The Safe Torque O (STO) function is used to stop the
drive in emergency stop situations. The drive can use the
STO function with asynchronous, synchronous, and
permanent magnet motors.
For more information about Safe Torque O, including
installation and commissioning, refer to the Safe Torque OOperating Guide.
Liability conditions
The customer is responsible for ensuring that personnel
know how to install and operate the safe torque o
function by:
Illustration 5.7 Energy Saved with Reduced Fan Capacity
Page 29
130BA780.11
SYSTEM CURVE
FAN CURVE
PRESSURE %
A
B
C
0
20
40
60
80
100
120
20406080 100 120 140 160 180
VOLUME %
n
100%
50%
25%
12,5%
50%100%
80%
80%
175HA208.10
Power ~n
3
Pressure ~n
2
Flow ~n
130BA779.12
060060060
0
20
40
60
80
100
Discharge Damper Solution
IGV Solution
VLT Solution
Energy consumed
Energy consumed
Energy consumed
Input power %
Volume %
Product FeaturesDesign Guide
Illustration 5.8 Fan Curves for Reduced Fan Volumes.
Example of energy savings
Illustration 5.9 describes the dependence of ow, pressure,
and power consumption on RPM. As seen in Illustration 5.9,
the ow is controlled by changing the RPM. Reducing the
speed only 20% from the rated speed also reduces the
ow by 20%. The ow is directly proportional to the RPM.
The consumption of electricity, however, is reduced by
50%.
If the system only runs at 100% ow a few days per year,
while the average is below 80% of the rated ow, the
amount of energy saved is even more than 50%.
Q
n
1
Flow:
Pressure:
Power:
QFlowPPower
Q1Rated owP1Rated power
Q2Reduced owP2Reduced power
HPressurenSpeed control
H1Rated pressuren1Rated speed
H2Reduced pressuren2Reduced speed
1
=
Q
n
2
2
2
H
n
1
1
=
H
n
2
2
3
P
n
1
1
=
P
n
2
2
Illustration 5.9 Laws of Proportionality
Comparison of energy savings
The Danfoss drive solution
oers major savings compared
with traditional energy saving solutions. The drive
regulates fan speed according to thermal load on the
system and functions as a building management system
(BMS).
The graph (Illustration 5.10) shows typical energy savings
obtainable with 3 well-known solutions when fan volume
is reduced to 60%. As the graph shows, more than 50%
energy savings can be achieved in typical applications.
Discharge dampers reduce power consumption. Inlet guide
vanes oer a 40% reduction but are expensive to install.
The Danfoss drive solution reduces energy consumption by
more than 50% and is easy to install.
Page 30
500
[h]
t
1000
1500
2000
200100300
[m
3
/h]
400
Q
175HA210.11
Product Features
VLT® HVAC Drive FC 102
Example with varying ow over 1 year
Illustration 5.11 is based on pump characteristics obtained from a pump datasheet. The result obtained shows energy
savings more than 50% at the given ow distribution over a year. The payback period depends on the price per kWh and
the price of the drive. In this example, it is less than a year when compared with valves and constant speed.
Illustration 5.12 Energy Savings in a Pump Application
5.3.2 Using a Drive for Better Control
If a drive is used for controlling the ow or pressure of a
system, improved control is obtained. A drive can vary the
speed of the fan or pump, obtaining variable control of
ow and pressure utilizing the built-in PID control.
Furthermore, a drive can quickly adapt the speed of the
fan or pump to new ow or pressure conditions in the
system.
Cos φ compensation
Typically, the VLT® HVAC Drive has a cos φ of 1 and
provides power factor correction for the cos φ of the
motor, which means there is no need to make allowance
for the cos φ of the motor when sizing the power factor
correction unit.
Star/delta starter or soft starter not required
When larger motors are started, it is necessary in many
countries to use equipment that limits the start-up current.
In more traditional systems, a star/delta starter or soft
starter is widely used. Such motor starters are not required
if a drive is used. As illustrated in Illustration 5.13, a drive
does not consume more than rated current.
VLT® HVAC Drive FC 102
2Star/delta starter
3Soft starter
4Start directly on mains
Illustration 5.13 Current Consumption with a Drive
Page 32
M
-+
M
M
x6x6
x6
175HA205.12
Valve
position
Starter
Fuses
LV
supply
P.F.C
Flow
3-Port
valve
Bypass
Return
Control
Supply
air
V.A.V
outlets
Duct
P.F.C
Mains
Fuses
Starter
Bypass
supply
LV
Return
valve
3-Port
Flow
Control
Valve
position
Starter
Power
Factor
Correction
Mains
IGV
Mechanical
linkage
and vanes
Fan
Motor
or
actuator
Main
B.M.S
Local
D.D.C.
control
Sensors
PT
Pressure
control
signal
0/10V
Temperature
control
signal
0/10V
Control
Mains
Cooling sectionHeating section
Fan sectionInlet guide vane
PumpPump
Product Features
VLT® HVAC Drive FC 102
5.3.3 Using a Drive to Save Money
The drive eliminates the need for some equipment that would normally be used. The 2 systems shown in Illustration 5.14
and Illustration 5.15 can be established at roughly the same price.
Cost without a drive
55
DDCDirect digital control
VAVVariable air volume
Sensor PPressure
EMSEnergy management system
Sensor TTemperature
Variable air volume systems (VAV) are used to control both the ventilation and temperature to fulll the requirements of a
building. Central VAV systems are considered to be the most energy-ecient method to air condition buildings. Central
systems are more ecient than distributed systems.
The eciency comes from using larger fans and chillers, which have higher eciencies than small motors and distributed
air-cooled chillers. Savings are also realized from the decreased maintenance requirements.
VLT® solution
While dampers and IGVs work to maintain a constant pressure in the ductwork, a drive solution saves more energy and
55
reduces the complexity of the installation. Instead of creating an articial pressure drop or a decrease in fan eciency, the
drive decreases the speed of the fan to provide the ow and pressure required by the system.
Centrifugal devices, such as fans, decrease the pressure and ow they produce as their speed is reduced. Their power
consumption is reduced.
The return fan is frequently controlled to maintain a xeddierence in airow between the supply and return. The
advanced PID controller of the HVAC drive can be used to eliminate the need for more controllers.
Illustration 5.16 Drives Used in a Variable Air Volume System
For more information, consult the Danfoss supplier for the Variable Air Volume: Improving VAV Ventilation Systems application
note.
5.3.4.2 Constant Air Volume
Constant air volume (CAV) systems are central ventilation systems used to supply large common zones with the minimum
amounts of fresh tempered air. They preceded VAV systems and are found in older multi-zoned commercial buildings as
well. These systems preheat fresh air with air handling units (AHUs) that have heating coils. Many are also used for air
conditioning buildings and have a cooling coil. Fan coil units are often used to help with the heating and cooling
requirements in the individual zones.
VLT® solution
With a drive, signicant energy savings can be obtained while maintaining decent control of the building. Temperature
sensors or CO2 sensors can be used as feedback signals to drives. Whether controlling temperature, air quality, or both, a
CAV system can be controlled to operate based on actual building conditions. As the number of people in the controlled
area decreases, the need for fresh air decreases. The CO2 sensor detects lower levels and decreases the supply fan speed.
The return fan modulates to maintain a static pressure setpoint or xeddierence between the supply and return airows.
Temperature control needs vary based on outside temperature and number of people in the controlled zone. As the
temperature decreases below the setpoint, the supply fan can decrease its speed. The return fan modulates to maintain a
static pressure setpoint. Decreasing the airow, reduces the energy used to heat or cool the fresh air, resulting in further
savings.
Several features of the Danfoss HVAC dedicated drive can be used to improve the performance of a CAV system. One
concern of controlling a ventilation system is poor air quality. The programmable minimum frequency can be set to
maintain a minimum amount of supply air regardless of the feedback or reference signal. The drive also includes a 3-zone, 3
setpoint PID controller which allows monitoring both temperature and air quality. Even if the temperature requirement is
satised, the drive maintains enough supply air to satisfy the air quality sensor. The controller can monitor and compare 2
feedback signals to control the return fan by maintaining a xeddierentialairow between the supply and return ducts.
55
Illustration 5.17 Drive Used in a Constant Air Volume System
For more information, consult the Danfoss supplier for the Constant Air Volume: Improving CAV Ventilation Systems application
note.
5.3.4.3 Cooling Tower Fan
Cooling tower fans are used to cool condenser water in water-cooled chiller systems. Water-cooled chillers provide the most
ecient means of creating chilled water. They are as much as 20% more ecient than air cooled chillers. Depending on
climate, cooling towers are often the most energy-ecient method of cooling the condenser water from chillers.
Cooling towers cool the condenser water by evaporation. The condenser water is sprayed into the cooling tower onto the
ll to increase its surface area. The tower fan blows air through the ll and sprayed water to aid in the evaporation.
Evaporation removes energy from the water, dropping its temperature. The cooled water collects in the basin of the cooling
tower where it is pumped back into the chiller condenser and the cycle is repeated.
VLT® solution
With a drive, the cooling tower fans can be controlled to the required speed to maintain the condenser water temperature.
The drives can also be used to turn the fan on and
o as needed. With the Danfoss VLT® HVAC Drive, as the cooling tower
fans drop below a certain speed, the cooling eect decreases. When using a gearbox to drive the tower fan, a minimum
speed of 40–50% could be required. The customer programmable minimum frequency setting is available to maintain this
minimum frequency even as the feedback or speed reference calls for lower speeds.
The drive can be programmed to enter a sleep mode and stop the fan until a higher speed is required. Additionally, some
cooling tower fans have undesirable frequencies that can cause vibrations. These frequencies can easily be avoided by
programming the bypass frequency ranges in the drive.
Illustration 5.18 Drives Used with a Cooling Tower Fan
For more information, consult the Danfoss supplier for the Cooling Tower Fan: Improving Fan Control on Cooling Towers
application note.
5.3.4.4 Condenser Pumps
Condenser water pumps are primarily used to circulate water through the condenser section of water-cooled chillers and
their associated cooling tower. The condenser water absorbs the heat from the condenser section and releases it into the
atmosphere in the cooling tower. These systems provide the most ecient means of creating chilled water. They are as
much as 20% more ecient than air cooled chillers.
VLT® solution
Drives can be added to condenser water pumps instead of balancing the pumps with a throttling valve or trimming the
pump impeller.
Using a drive instead of a throttling valve saves the energy that the valve would otherwise have absorbed. This change can
amount to savings of 15–20% or more. Trimming the pump impeller is irreversible. If the conditions change and higher ow
is required, the impeller must be replaced.
Illustration 5.19 Drive Used with a Condenser Pump
For more information, consult the Danfoss supplier for the Condenser Pumps: Improving Condenser Water Pumping Systems
application note.
5.3.4.5 Primary Pumps
Primary pumps in a primary/secondary pumping system can maintain a constant ow through devices that encounter
operation or control diculties when exposed to variable ow. The primary/secondary pumping technique decouples the
primary production loop from the secondary distribution loop. Decoupling allows devices such as chillers to obtain constant
design ow and operate properly while allowing the rest of the system to vary in ow. As the evaporator ow rate
decreases in a chiller, the water begins to become overchilled. As the water becomes overchilled, the chiller attempts to
decrease its cooling capacity. If the ow rate drops far enough, or too quickly, the chiller cannot shed its load suciently
and the low evaporator temperature safety trips the chiller, requiring a manual reset. This situation is common in large
installations, especially when 2 or more chillers in parallel are installed if primary/secondary pumping is not used.
VLT® solution
A drive can be added to the primary system, to replace the throttling valve and/or trimming of the impellers, leading to
reduced operating expenses. Two control methods are common:
A ow meter installed at the discharge of each chiller can control the pump directly because the desired ow rate
•
is known and constant. Using the PID controller, the drive always maintains the appropriate ow rate, even
compensating for the changing resistance in the primary piping loop as chillers and their pumps are staged on
and o.
The operator can use local speed determination by decreasing the output frequency until the design ow rate is
•
achieved. Using a drive to decrease the pump speed is similar to trimming the pump impeller, but more ecient.
The balancing contractor simply decreases the speed of the pump until the proper ow rate is achieved and leaves
the speed xed. The pump operates at this speed any time the chiller is staged on. Because the primary loop lacks
control valves or other devices that can change the system curve, and the variance due to staging pumps and
chillers on and o is small, this xed speed remains appropriate. If the ow rate must be increased later in the life
of the system, the drive can simply increase the pump speed instead of requiring a new pump impeller.
55
Illustration 5.20 Drives Used with Primary Pumps in a Primary/Secondary Pump System
For more information, consult the Danfoss supplier for the Primary Pumps: Improving Primary Pumping in Pri/Sec System
application note.
Secondary pumps in a primary/secondary chilled water pumping system are used to distribute the chilled water to the loads
from the primary production loop. The primary/secondary pumping system is used to de-couple one piping loop from
another hydronically. In this case, the primary pump maintains a constant ow through the chillers, allowing the secondary
pumps to vary ow, which increases control and save energy.
If the primary/secondary design concept is not used and a variable volume system is designed, when the ow rate drops far
enough or too quickly, the chiller cannot shed its load properly. The low evaporator temperature safety then trips the chiller,
requiring a manual reset. This situation is common in large installations especially when 2 or more chillers in parallel are
installed.
VLT® solution
While the primary/secondary system with 2-way valves improves energy and system control, using drives increases the
energy savings and control potential further. With the proper sensor location, the addition of drives allows the pumps to
match their speed to the system curve instead of the pump curve, which eliminates wasted energy and most of the overpressurization to which 2-way valves can be subjected.
As the monitored loads are reached, the 2-way valves close down, increasing the dierential pressure measured across the
load and 2-way valve. As this dierential pressure starts to rise, the pump is slowed to maintain the control head also called
setpoint value. This setpoint value is calculated by summing the pressure drop of the load and 2-way valve together under
design conditions.
55
NOTICE
When running multiple pumps in parallel, they must run at the same speed to increase energy savings, either with
individual dedicated drives, or 1 drive running multiple pumps in parallel.
Illustration 5.21 Drives Used with Secondary Pumps in a Primary/Secondary Pump System
For more information, consult the Danfoss supplier for the Secondary Pumps: Improving Secondary Pumping in Pri/Sec System
application note.
The basic cascade controller is used for pump applications
where a certain pressure (head) or level must be
maintained over a wide dynamic range. Running a large
pump at variable speed over a wide range is not an ideal
solution because of low pump eciency at lower speed. In
a practical way, the limit is 25% of the rated full-load
speed for the pump.
In the basic cascade controller, the drive controls a variable
speed (lead) motor as the variable speed pump and can
55
stage up to 2 more constant speed pumps on and
Connect the additional constant speed pumps directly to
mains or via soft starters. By varying the speed of the
initial pump, variable speed control of the entire system is
provided. The variable speed maintains constant pressure,
which results in reduced system stress, and quieter
operation in pumping systems.
VLT® HVAC Drive FC 102
The actual system load determines staging.
A separate parameter limits alternation only to take place if
total capacity required is >50%. Total pump capacity is
determined as lead pump plus xed speed pumps
capacities.
Bandwidth management
In cascade control systems, to avoid frequent switching of
o.
xed-speed pumps, the desired system pressure is kept
within a bandwidth rather than at a constant level. The
staging bandwidth provides the required bandwidth for
operation. When a large and quick change in system
pressure occurs, the override bandwidth overrides the
staging bandwidth to prevent immediate response to a
short duration pressure change. An override bandwidth
Whenever an alternation timer expires.
•
At a predened time of day.
•
When the lead pump goes into sleep mode.
•
timer can be programmed to prevent staging until the
system pressure has stabilized and normal control is
established.
When the cascade controller is enabled and the drive
issues a trip alarm, the system head is maintained by
staging and destaging xed-speed pumps. To prevent
frequent staging and destaging and minimize pressure
uctuations, a wider xed speed bandwidth is used instead
of the staging bandwidth.
Illustration 5.22 Basic Cascade Controller
Fixed lead pump
The motors must be of equal size. The basic cascade
controller allows the drive to control up to 3 equal pumps
using the 2 built-in relays in the drive. When the variable
pump (lead) is connected directly to the drive, the 2 builtin relays control the other 2 pumps. When lead pump
alternations are enabled, pumps are connected to the
built-in relays and the drive can operate 2 pumps.
Lead pump alternation
The motors must be of equal size. This function makes it
possible to cycle the drive between the pumps in the
system (maximum of 2 pumps). In this operation, the runtime between pumps is equalized, reducing the required
pump maintenance and increasing reliability and lifetime
of the system. The alternation of the lead pump can take
place at a command signal or at staging (adding another
pump).
The command can be a manual alternation or an
alternation event signal. If the alternation event is selected,
the lead pump alternation takes place every time the
event occurs. Selections include:
With lead pump alternation enabled, a maximum of 2
pumps are controlled. At an alternation command, the PID
stops, the lead pump ramps to minimum frequency (f
and, after a delay, it ramps to maximum frequency (f
When the speed of the lead pump reaches the destaging
frequency, the xed-speed pump is cut out (destaged). The
lead pump continues to ramp up and then ramps down to
a stop and the 2 relays are cut out.
Illustration 5.23 Lead Pump Alternation
After a time delay, the relay for the
xed-speed pump cuts
in (staged) and this pump becomes the new lead pump.
The new lead pump ramps up to maximum speed and
then down to minimum speed. When ramping down and
reaching the staging frequency, the old lead pump is now
cut in (staged) on the mains as the new xed-speed pump.
max
min
)
).
Page 41
Product FeaturesDesign Guide
If the lead pump has been running at minimum frequency
(f
) for a programmed amount of time, with a xed-
min
speed pump running, the lead pump contributes little to
the system. When the programmed value of the timer
expires, the lead pump is removed, avoiding water heating
problems.
5.4.1.2 System Status and Operation
If the lead pump goes into sleep mode, the function is
shown on the LCP. It is possible to alternate the lead pump
on a sleep mode condition.
When the cascade controller is enabled, the LCP shows the
operation status for each pump and the cascade controller.
Information shown includes:
Pump status is a readout of the status for the
•
relays assigned to each pump. The display shows
pumps that are disabled, o, running on the
drive, or running on the mains/motor starter.
Cascade status is a readout of the status for the
•
cascade controller. The display shows the
following:
-Cascade controller is disabled.
-All pumps are o.
-An emergency has stopped all pumps.
-All pumps are running.
-Fixed-speed pumps are being staged/
destaged.
-Lead pump alternation is occurring.
Destage at no-ow ensures that all xed-speed
•
pumps are stopped individually until the no-ow
status disappears.
Dynamic Braking Overview
5.5
Dynamic braking slows the motor using 1 of the following
methods:
AC brake
•
The brake energy is distributed in the motor by
changing the loss conditions in the motor
(parameter 2-10 Brake Function = [2]). The AC
brake function cannot be used in applications
with high cycling frequency since this situation
overheats the motor.
DC brake
•
An overmodulated DC current added to the AC
current works as an eddy current brake
(parameter 2-02 DC Braking Time≠ 0 s).
Resistor brake
•
A brake IGBT keeps the overvoltage under a
certain threshold by directing the brake energy
from the motor to the connected brake resistor
(parameter 2-10 Brake Function = [1]). For more
information on selecting a brake resistor, see VLTBrake Resistor MCE 101 Design Guide.
For drives equipped with the brake option, a brake IGBT
along with terminals 81(R-) and 82(R+) are included for
connecting an external brake resistor.
The function of the brake IGBT is to limit the voltage in the
DC link whenever the maximum voltage limit is exceeded.
It limits the voltage by switching the externally mounted
resistor across the DC bus to remove excess DC voltage
present on the bus capacitors.
External brake resistor placement has the advantages of
selecting the resistor based on application need,
dissipating the energy outside of the control panel, and
protecting the drive from overheating if the brake resistor
is overloaded.
55
®
The brake IGBT gate signal originates on the control card
and is delivered to the brake IGBT via the power card and
gatedrive card. Also, the power and control cards monitor
the brake IGBT for a short circuit. The power card also
monitors the brake resistor for overloads.
Mains connecting point for
additional drives in the
load sharing application
DC connecting point for
additional drives in the
load sharing application
91
92
93
91
92
93
96
97
98
96
97
98
82 8182 81
M
Product Features
VLT® HVAC Drive FC 102
5.6 Load Share Overview
Load share is a feature that allows the connection of DC circuits of several drives, creating a multiple-drive system to run 1
mechanical load. Load share provides the following benets:
Energy savings
A motor running in regenerative mode can supply drives that are running in motoring mode.
Reduced need for spare parts
Usually, only 1 brake resistor is needed for the entire drive system instead of 1 brake resistor for per drive.
Power back-up
If there is mains failure, all linked drives can be supplied through the DC link from a back-up. The application can continue
55
running or go though a controlled shutdown process.
Preconditions
The following preconditions must be met before load sharing is considered:
The drive must be equipped with load sharing terminals.
•
Product series must be the same. Only VLT® HVAC Drive drives used with other VLT® HVAC Drive drives.
•
Drives must be placed physically close to one another to allow the wiring between them to be no longer than
•
25 m (82 ft).
Drives must have the same voltage rating.
•
When adding a brake resistor in a load sharing conguration, all drives must be equipped with a brake chopper.
•
Fuses must be added to load share terminals.
•
For a diagram of a load share application in which best practices are applied, see Illustration 5.24.
Illustration 5.24 Diagram of a Load Share Application Where Best Practices are Applied
Load sharing
Units with the built-in load sharing option contain terminals (+) 89 DC and (–) 88 DC. Within the drive, these terminals
connect to the DC bus in front of the DC-link reactor and bus capacitors.
The load sharing terminals can connect in 2 dierentcongurations.
Terminals tie the DC-bus circuits of multiple drives together. This conguration allows a unit that is in a
•
regenerative mode to share its excess bus voltage with another unit that is running a motor. Load sharing in this
manner can reduce the need for external dynamic brake resistors, while also saving energy. The number of units
that can be connected in this way is innite, as long as each unit has the same voltage rating. In addition,
depending on the size and number of units, it may be necessary to install DC reactors and DC fuses in the DC-link
connections, and AC reactors on the mains. Attempting such a conguration requires specic considerations.
The drive is powered exclusively from a DC source. This conguration requires:
•
-A DC source.
-A means to soft charge the DC bus at power-up.
5.7 Regen Overview
Regen typically occurs in applications with continuous braking such as cranes/hoists, downhill conveyors, and centrifuges
where energy is pulled out of a decelerated motor.
The excess energy is removed from the drive using 1 of the following options:
Brake chopper allows the excess energy to be dissipated in the form of heat within the brake resistor coils.
•
Regen terminals allow a third-party regen unit to be connected to the drive, allowing the excess energy to be
•
returned to the power grid.
55
Returning excess energy back to the power grid is the most
continuous braking.
ecient use of regenerated energy in applications using
This section describes the eldbus devices that are
available with the VLT® HVAC Drive series. Using a eldbus
device reduces system cost, delivers faster and more
ecient communication, and provides an easier user
interface. For ordering numbers, refer to
chapter 13.2 Ordering Numbers for Options/Kits.
6.1.1
VLT® PROFIBUS DP-V1 MCA 101
The MCA 101 provides:
Wide compatibility, a high level of availability,
•
support for all major PLC vendors, and compatibility with future versions.
Fast, ecient communication, transparent instal-
•
lation, advanced diagnosis, and parameterization
and auto-conguration of process data via a GSD
le.
Acyclic parameterization using PROFIBUS DP-V1,
•
PROFIdrive, or Danfoss FC
6.1.2
VLT® DeviceNet MCA 104
prole state machines.
6.1.4
VLT® BACnet MCA 109
The open communications protocol for worldwide building
automation use. The BACnet protocol is an international
protocol that eciently integrates all parts of building
automation equipment from the actuator level to the
building management system.
BACnet is the world standard for building
•
automation.
International standard ISO 16484-5.
•
With no license fees, the protocol can be used in
•
building automation systems of all sizes.
The BACnet option lets the drive communicate
•
with building management systems running the
BACnet protocol.
BACnet is typically used for heating, ventilation,
•
cooling, and climate equipment control.
The BACnet protocol easily integrates into
•
existing control equipment networks.
6.1.5
VLT® PROFINET MCA 120
The MCA 104 provides:
Support of the ODVA AC drive prole supported
•
via I/O instance 20/70 and 21/71 secures compatibility to existing systems.
Benets from ODVA’s strong conformance testing
•
policies that ensure products are interoperable.
6.1.3
VLT® LonWorks MCA 108
LonWorks is a eldbus system developed for building
automation. It enables communication between individual
units in the same system (peer-to-peer) and thus supports
decentralizing of control.
No need for large main station (master/slave).
•
Units receive signals directly.
•
Supports Echelon free-topology interface (exible
•
cabling and installation).
Supports embedded I/Os and I/O options (easy
•
implementation of de-central I/Os).
Sensor signals can quickly be moved to another
•
controller via bus cables.
Certied as compliant with LonMark version 3.4
•
specications.
The MCA 120 option combines the highest performance
with the highest degree of openness. The option is
designed so that many of the features from the VLT
PROFIBUS MCA 101 can be reused, minimizing user eort
to migrate PROFINET and securing the investment in a PLC
program.
Same PPO types as the VLT® PROFIBUS DP V1
•
MCA 101 for easy migration to PROFINET.
Built-in web server for remote diagnosis and
•
reading out of basic drive parameters.
Supports MRP.
•
Supports DP-V1. Diagnostic allows easy, fast, and
•
standardized handling of warning and fault
information into the PLC, improving bandwidth in
the system.
Ethernet is the future standard for communication at the
factory oor. The VLT® EtherNet/IP MCA 121 option is
based on the newest technology available for industrial
use and handles even the most demanding requirements.
EtherNet/IP™ extends standard commercial Ethernet to the
Common Industrial Protocol (CIP™) – the same upper-layer
protocol and object model found in DeviceNet.
MCA 121
6.1.7
oers advanced features such as:
Built-in, high-performance switch enabling line-
•
topology, which eliminates the need for external
switches.
DLR Ring (from October 2015).
•
Advanced switch and diagnosis functions.
•
Built-in web server.
•
E-mail client for service notication.
•
Unicast and Multicast communication.
•
VLT® Modbus TCP MCA 122
magnet motors in parallel and monitor points required in
typical HVAC applications. Besides standard functionality,
the MCA 125 option features:
COV (change of value).
•
Read/write property multiple.
•
Alarm/warning notications
•
Ability to change BACnet object names for user-
•
friendliness.
BACnet Loop object.
•
Segmented data transfer.
•
Trending, based on time or event.
•
6.2 Functional Extensions
This section describes the functional extension options that
are available with the VLT® HVAC Drive series. For ordering
numbers, refer to chapter 13.2 Ordering Numbers forOptions/Kits.
6.2.1
VLT® General Purpose I/O Module
MCB 101
6
6
The MCA 122 option connects to Modbus TCP-based
networks. It handles connection intervals down to 5 ms in
both directions, positioning it among the fastest
performing Modbus TCP devices in the market. For master
redundancy, it features hot swapping between 2 masters.
Other features include:
Built-in web-server for remote diagnosis and
•
reading out basic drive parameters.
Email notication that can be congured to send
•
an email message to 1 or more recipients when
certain alarms or warnings occur, or when they
are cleared.
Dual master PLC connection for redundancy.
•
6.1.8
VLT® BACnet/IP MCA 125
The VLT® BACnet/IP MCA 125 option allows quick and easy
integration of the drive into building management systems
(BMS) using the BACnet/IP protocol or by running BACnet
on Ethernet. It can read and share data points and transfer
actual and requested values to and from the systems.
The MCA 125 option has 2 Ethernet connectors, enabling
daisy-chain conguration with no need for external
switches. The embedded 3-port managed switch of the
VLT® BACnet/IP MCA 125 option comprises 2 external and
1 internal Ethernet port. This switch allows the use of a
line structure for the Ethernet cabling. This option makes it
possible to control multiple high-eciency permanent
The MCB 101 option oers an extended number of control
inputs and outputs:
3 digital inputs 0–24 V: Logic 0 < 5 V; Logic 1 >
•
10 V.
2 analog inputs 0–10 V: Resolution 10 bits plus
•
sign.
2 digital outputs NPN/PNP push-pull.
•
1 analog output 0/4–20 mA.
•
Spring-loaded connection.
•
6.2.2
VLT® Relay Card MCB 105
The MCB 105 option extends relay functions with 3 more
relay outputs.
Protects control cable connection.
•
Spring-loaded control wire connection.
•
Maximum switch rate (rated load/minimum load)
6 minutes-1/20 s-1.
Maximum terminal load
AC-1 resistive load: 240 V AC, 2 A.
6.2.3
VLT® Analog I/O Option MCB 109
The VLT® Analog I/O Option MCB 109 is easily tted in the
drive for upgrading to advanced performance and control
using the additional inputs/outputs. This option also
upgrades the drive with a battery back-up supply for the
drive’s built-in clock. This battery back-up provides stable
use of all timed actions used by the drive.
3 analog inputs, each congurable as both
•
voltage and temperature input.
Connection of 0–10 V analog signals as well as
•
PT1000 and NI1000 temperature inputs.
3 analog outputs, each congurable as 0–10 V
•
outputs.
6.2.4
VLT® PTC Thermistor Card MCB 112
The VLT® PTC Thermistor Card MCB 112 provides extra
motor monitoring compared to the built-in ETR function
and thermistor terminal.
Protects the motor from overheating.
•
ATEX-approved for use with Ex-d motors.
•
Uses Safe Torque O function, which is approved
•
in accordance with SIL 2 IEC 61508.
6.2.5
VLT® Sensor Input Option MCB 114
The MCB 114 option protects the motor from being
overheated by monitoring the temperature of motor
bearings and windings.
3 self-detecting sensor inputs for 2 or 3-wire
•
PT100/PT1000 sensors.
1 extra analog input 4–20 mA.
•
Motion Control and Relay Cards
6.3
Brake Resistors
6.4
In applications where the motor is used as a brake, energy
is generated in the motor and sent back into the drive. If
the energy cannot be transported back to the motor, it
increases the voltage in the drive DC line. In applications
with frequent braking and/or high inertia loads, this
increase can lead to an overvoltage trip in the drive and,
nally, a shutdown. Brake resistors are used to dissipate
the excess energy resulting from the regenerative braking.
The resistor is selected based on its ohmic value, its power
dissipation rate, and its physical size. Danfoss oers a wide
variety of dierent resistors that are specially designed to
Danfoss drives. For ordering numbers and more
information on how to dimension brake resistors, refer to
the VLT® Brake Resistor MCE 101 Design Guide.
6.5 Sine-wave Filters
When a drive controls a motor, resonance noise is heard
from the motor. This noise, which is the result of the motor
design, occurs every time an inverter switch in the drive is
activated. The frequency of the resonance noise thus
corresponds to the switching frequency of the drive.
Danfoss supplies a sine-wave lter to dampen the acoustic
motor noise. The lter reduces the ramp-up time of the
voltage, the peak load voltage (U
current (ΔI) to the motor, which means that current and
voltage become almost sinusoidal. The acoustic motor
noise is reduced to a minimum.
The ripple current in the sine-wave lter coils also causes
some noise. Solve the problem by integrating the lter in a
cabinet or enclosure.
), and the ripple
PEAK
This section describes the motion control and relay card
options that are available with the VLT® AutomationDrive
series. For ordering numbers, refer to chapter 13.2 OrderingNumbers for Options/Kits.
6.3.1
VLT® Extended Relay Card MCB 113
The MCB 113 option adds inputs/outputs for increased
For ordering numbers and more information on sine-wave
lters, refer to the Output Filters Design Guide.
dU/dt Filters
6.6
Danfoss supplies dU/dt lters which are dierential mode,
low-pass lters that reduce motor terminal phase-to-phase
peak voltages and reduce the rise time to a level that
lowers the stress on the insulation at the motor windings.
This is a typical issue with set-ups using short motor
cables.
Compared to sine-wave
o frequency above the switching frequency.
For ordering numbers and more information on dU/dt
lters, refer to the Output Filters Design Guide.
lters, the dU/dt lters have a cut-
Page 47
Options and Accessories Ove...Design Guide
6.7 Common-mode Filters
High-frequency common-mode cores (HF-CM cores) reduce
electromagnetic interference and eliminate bearing
damage by electrical discharge. They are special nanocrystalline magnetic cores that have superior ltering
performance compared to regular ferrite cores. The HF-CM
core acts like a common-mode inductor between phases
and ground.
Installed around the 3 motor phases (U, V, W), the
common mode
mode currents. As a result, high-frequency electromagnetic
interference from the motor cable is reduced.
For ordering numbers refer to the Output Filters DesignGuide.
lters reduce high-frequency common-
6.8 Harmonic Filters
The VLT® Advanced Harmonic Filters AHF 005 & AHF 010
should not be compared with traditional harmonic trap
lters. The Danfoss harmonic lters have been specially
designed to match the Danfoss drives.
By connecting the AHF 005 or AHF 010 in front of a
Danfoss drive, the total harmonic current distortion
generated back to the mains is reduced to 5% and 10%.
For ordering numbers and more information on how to
dimension brake resistors, refer to the VLT® Advanced
Harmonic Filters AHF 005/AHF 010 Design Guide.
Enclosure Built-in Options
6.9
The following built-in options are specied in the type
code when ordering the drive.
Enclosure with corrosion-resistant back channel
For extra protection from corrosion in harsh environments,
units can be ordered in an enclosure that includes a
stainless steel back channel, heavier plated heat sinks, and
an upgraded fan. This option is recommended in salt-air
environments, such as those near the ocean.
Mains shielding
Lexan® shielding can be mounted in front of incoming
power terminals and input plate to protect against physical
contact when the enclosure door is open.
Space heaters and thermostat
Mounted in the cabinet interior of enclosure size F drives
and controlled via an automatic thermostat, space heaters
controlled via an automatic thermostat prevent condensation inside the enclosure.
The thermostat default settings turn on the heaters at
10 °C (50 °F) and turn them
o at 15.6 °C (60 °F).
Cabinet light with power outlet
To increase visibility during servicing and maintenance, a
light can be mounted on the cabinet interior of enclosure
F drives. The light housing includes a power outlet for
temporarily powering laptop computers or other devices.
Available in 2 voltages:
230 V, 50 Hz, 2.5 A, CE/ENEC
•
120 V, 60 Hz, 5 A, UL/cUL
•
RFI lters
VLT® drive series feature integrated Class A2 RFI lters as
standard. If extra levels of RFI/EMC protection are required,
they can be obtained using optional Class A1 RFI lters,
which provide suppression of radio frequency interference
and electromagnetic radiation in accordance with EN
55011. Marine use RFI lters are also available.
On enclosure size F drives, the Class A1 RFI lter requires
the addition of the options cabinet.
Insulation resistance monitor (IRM)
Monitors the insulation resistance in ungrounded systems
(IT systems in IEC terminology) between the system phase
conductors and ground. There is an ohmic pre-warning
and a main alarm setpoint for the insulation level.
Associated with each setpoint is an SPDT alarm relay for
external use. Only 1 insulation resistance monitor can be
connected to each ungrounded (IT) system.
Integrated into the safe-stop circuit.
•
LCD display of insulation resistance.
•
Fault memory.
•
Info, test, and reset key.
•
Residual current device (RCD)
Uses the core balance method to monitor ground fault
currents in grounded and high-resistance grounded
systems (TN and TT systems in IEC terminology). There is a
pre-warning (50% of main alarm setpoint) and a main
alarm setpoint. Associated with each setpoint is an SPDT
alarm relay for external use. Requires an external windowtype current transformer (supplied and installed by
customer).
Integrated into the safe-stop circuit.
•
IEC 60755 Type B device monitors, pulsed DC,
•
and pure DC ground fault currents.
LED bar graph indicator of the ground fault
•
current level from 10–100% of the setpoint.
Fault memory.
•
Test and reset key.
•
Safe Torque
Available for drives with enclosure size F. Enables the Pilz
relay to t in the enclosure without requiring an options
cabinet. The relay is used in the external temperature
monitoring option. If PTC monitoring is required, order the
Includes a redundant 4-wire emergency stop push button
mounted on the front of the enclosure, and a Pilz relay
that monitors it along with the safe-stop circuit and
contactor position. Requires a contactor and the options
cabinet for drives with enclosure size F.
Brake chopper (IGBTs)
Brake terminals with an IGBT brake chopper circuit allow
for the connection of external brake resistors. For detailed
data on brake resistors, see the VLT® Brake Resistor MCE 101
Design Guide, available at drives.danfoss.com/downloads/
portal/#/.
Regen terminals
Allow connection of regen units to the DC bus on the
capacitor bank side of the DC-link reactors for regenerative
braking. The enclosure size F regen terminals are sized for
approximately 50% the power rating of the drive. Consult
the factory for regen power limits based on the specic
drive size and voltage.
Load sharing terminals
These terminals connect to the DC-bus on the
of the DC-link reactor and allow for the sharing of DC bus
power between multiple drives. For drives with enclosure
size F, the load sharing terminals are sized for approximately 33% of the power rating of the drive. Consult the
factory for load sharing limits based on the specic drive
size and voltage.
Disconnect
A door-mounted handle allows for the manual operation of
a power disconnect switch to enable and disable power to
the drive, increasing safety during servicing. The
disconnect is interlocked with the cabinet doors to prevent
them from being opened while power is still applied.
Circuit breakers
A circuit breaker can be remotely tripped, but must be
manually reset. Circuit breakers are interlocked with the
cabinet doors to prevent them from being opened while
power is still applied. When a circuit breaker is ordered as
an option, fuses are also included for fast-acting current
overload protection of the AC drive.
Contactors
An electrically-controlled contactor switch allows for the
remote enabling and disabling of power to the drive. If the
IEC emergency stop option is ordered, the Pilz relay
monitors the auxiliary contact on the contactor.
Manual motor starters
Provide 3-phase power for electric cooling blowers that are
often required for larger motors. Power for the starters is
provided from the load side of any supplied contactor,
circuit breaker, or disconnect switch. If a Class 1 RFI lter
option is ordered, the input side of the RFI provides the
power to the starter. Power is fused before each motor
starter and is o when the incoming power to the drive is
o. Up to 2 starters are allowed. If a 30 A fuse-protected
rectier side
circuit is ordered, then only 1 starter is allowed. Starters
are integrated into the safe-stop circuit. Features include:
Operation switch (on/o).
•
Short circuit and overload protection with test
•
function.
Manual reset function.
•
30 A, fuse-protected terminals
3-phase power matching incoming mains voltage
•
for powering auxiliary customer equipment.
Not available if 2 manual motor starters are
•
selected.
Terminals are o when the incoming power to
•
the drive is o.
Power for the terminals is provided from the load
•
side of any supplied contactor, circuit breaker, or
disconnect switch. If a Class 1 RFI lter option is
ordered, the input side of the RFI provides the
power to the starter.
Common motor terminals
The common motor terminal option provides the busbars
and hardware required to connect the motor terminals
from the paralleled inverters to a single terminal (per
phase) to accommodate the installation of the motor-side
top entry kit.
This option is also recommended to connect the output of
a drive to an output lter or output contactor. The
common motor terminals eliminate the need for equal
cable lengths from each inverter to the common point of
the output lter (or motor).
24 V DC supply
5 A, 120 W, 24 V DC.
•
Protected against output overcurrent, overload,
•
short circuits, and overtemperature.
For powering customer-supplied accessory
•
devices such as sensors, PLC I/O, contactors,
temperature probes, indicator lights, and/or other
electronic hardware.
Diagnostics include a dry DC-ok contact, a green
•
DC-ok LED, and a red overload LED.
External temperature monitoring
Designed for monitoring temperatures of external system
components, such as the motor windings and/or bearings.
Includes 8 universal input modules plus 2 dedicated
thermistor input modules. All 10 modules are integrated
into the safe-stop circuit and can be monitored via a
eldbus network, which requires the purchase of a
separate module/bus coupler. A Safe Torque O brake
option must be ordered when selecting external
temperature monitoring.
Sensor lead wire break, short circuit, and incorrect
•
polarity detection.
Sensor lead wire break, short circuit, and incorrect
•
polarity detection.
Interface set-up software.
•
If 3 PTC are required, the VLT® PTC Thermistor
•
Card MCB 112 option must be added.
Ordering numbers for enclosure built-in options can be
found in chapter 13.1 Drive
Congurator.
6
6
6.10 High-power Kits
High-power kits, such as back-wall cooling, space heater,
mains shield, are available. See chapter 13.2 OrderingNumbers for Options/Kits for a brief description and
ordering numbers for all available kits.
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]355400450
Typical shaft output at 460 V [hp]500600600
Typical shaft output at 480 V [kW]400500530
15% (tolerance relates to variety in voltage and cable conditions). These
Page 51
SpecicationsDesign Guide
VLT® HVAC Drive FC 102
Normal overloadNONONONO
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]500560630710
Typical shaft output at 460 V [hp]6507509001000
Typical shaft output at 480 V [kW]560630710800
Enclosure sizeF1/F3F1/F3F1/F3F1/F3
Output current (3-phase)
Continuous (at 400 V) [A]88099011201260
Intermittent (60 s overload) (at 400 V) [A]968108916801890
Continuous (at 460/480 V) [A]78089010501160
Intermittent (60 s overload)
(at 460/480 V) [A]
Continuous kVA (at 400 V) [kVA]610686776873
Continuous kVA (at 460 V) [kVA]621709837924
Continuous kVA (at 480 V) [kVA]6757719091005
Estimated power loss at 460 V [W]
Maximum added losses A1 RFI, circuit breaker or disconnect, and
contactor [W], (F3 only)
Maximum panel options losses [W]400400400400
Eciency
Output frequency [Hz]0–5900–5900–5900–590
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P500P560P630P710
85897911551276
8x150 (8x300
mcm)
8x240 (8x500
mcm)
8x456 (8x900
mcm)
8x120 (8x250
mcm)
8x185 (8x350
mcm)
1600160020002000
10162118221251214674
8876104241159513213
963105410931230
0.980.980.980.98
85 (185)85 (185)85 (185)85 (185)
8x150 (8x300
mcm)
8x240 (8x500
mcm)
8x456 (8x900
mcm)
8x120 (8x250
mcm)
8x185 (8x350
mcm)
8x150 (8x300
mcm)
8x240 (8x500
mcm)
8x456 (8x900
mcm)
8x120 (8x250
mcm)
8x185 (8x350
mcm)
8x150 (8x300
8x240 (8x500
8x456 (8x900
8x120 (8x250
8x185 (8x350
mcm)
mcm)
mcm)
mcm)
mcm)
77
Table 7.2 Electrical Data for Enclosures F1/F3, Mains Supply 3x380–480 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
±
2) Typical power loss is at normal conditions and expected to be within
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to drives.danfoss.com/knowledge-center/energy-
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
15% (tolerance relates to variety in voltage and cable conditions). These
Page 52
Specications
VLT® HVAC Drive FC 102
VLT® HVAC Drive FC 102
Normal overloadNONO
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]8001000
Typical shaft output at 460 V [hp]12001350
Typical shaft output at 480 V [kW]10001100
Enclosure sizeF2/F4F2/F4
Output current (3-phase)
Continuous (at 400 V) [A]14601720
Intermittent (60 s overload)
(at 400 V) [A]
Continuous (at 460/480 V) [A]13801530
Intermittent (60 s overload)(at 460/480 V) [A]15181683
Continuous kVA (at 400 V) [kVA]10121192
Continuous kVA (at 460 V) [kVA]11001219
Continuous kVA (at 480 V) [kVA]11951325
Estimated power loss at 460 V [W]
Maximum added losses A1 RFI, circuit breaker or disconnect, and contactor [W], (F4 only)22802541
Maximum panel options losses [W]400400
Eciency
Output frequency [Hz]0–5900–590
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P800P1000
16061892
12x150 (12x300
mcm)
8x240 (8x500 mcm) 8x240 (8x500 mcm)
8x456 (8x900 mcm) 8x456 (8x900 mcm)
4x120 (4x250 mcm) 4x120 (4x250 mcm)
6x185 (6x350 mcm) 6x185 (6x350 mcm)
25002500
1729319278
1622916624
0.980.98
85 (185)85 (185)
12x150 (12x300
mcm)
Table 7.3 Electrical Data for Enclosures F2/F4, Mains Supply 3x380–480 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
±
2) Typical power loss is at normal conditions and expected to be within
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to drives.danfoss.com/knowledge-center/energy-
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
15% (tolerance relates to variety in voltage and cable conditions). These
Page 53
SpecicationsDesign Guide
VLT® HVAC Drive FC 102
Normal overloadNONONO
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]355400450
Typical shaft output at 460 V [hp]500600600
Typical shaft output at 480 V [kW]400500530
Enclosure sizeF8/F9F8/F9F8/F9
Output current (3-phase)
Continuous (at 400 V) [A]658745800
Intermittent (60 s overload) (at 400 V) [A]724820880
Continuous (at 460/480 V) [A]590678730
Intermittent (60 s overload) (at 460/480 V) [A]649746803
Continuous kVA (at 400 V) [kVA]456516554
Continuous kVA (at 460 V) [kVA]470540582
Continuous kVA (at 480 V) [kVA]511587632
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]500560630710
Typical shaft output at 460 V [hp]6507509001000
Typical shaft output at 480 V [kW]560630710800
Enclosure sizeF10/F11F10/F11F10/F11F10/F11
Output current (3-phase)
Continuous (at 400 V) [A]88099011201260
Intermittent (60 s overload) (at 400 V) [A]968108912321386
Continuous (at 460/480 V) [A]78089010501160
Intermittent (60 s overload) (at 460/480 V) [A]85897911551276
Continuous kVA (at 400 V) [kVA]610686776873
Continuous kVA (at 460 V) [kVA]621709837924
Continuous kVA (at 480 V) [kVA]6757719091005
Maximum input current
Continuous (at 400 V) [A]84895410791214
77
Continuous (at 460/480 V) [A]75285810121118
Maximum number and size of cables per phase
- Motor [mm2 (AWG)]
- Mains [mm2 (AWG)]
- Brake [mm2 (AWG)]
Maximum external mains fuses [A]
Estimated power loss at 400 V [W]
Estimated power loss at 460 V [W]
Maximum added losses A1 RFI, circuit breaker or disconnect, and
contactor [W], (F11 only)
Maximum panel options losses [W]400400400400
Eciency
Output frequency [Hz]0–5900–5900–5900–590
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P500P560P630P710
8x150 (8x300
mcm)
6x120 (6x250
mcm)
4x185 (4x350
mcm)
9009009001500
10647123381320115436
9414110061235314041
963105410931230
0.980.980.980.98
85 (185)85 (185)85 (185)85 (185)
8x150 (8x300
mcm)
6x120 (6x250
mcm)
4x185 (4x350
mcm)
8x150 (8x300
mcm)
6x120 (6x250
mcm)
4x185 (4x350
mcm)
8x150 (8x300
6x120 (6x250
4x185 (4x350
mcm)
mcm)
mcm)
Table 7.5 Electrical Data for Enclosures F10/F11, Mains Supply 6x380–480 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
2) Typical power loss is at normal conditions and expected to be within ±15% (tolerance relates to variety in voltage and cable conditions). These
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to drives.danfoss.com/knowledge-center/energy-
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
(Normal overload=110% current during 60 s)
Typical shaft output at 400 V [kW]8001000
Typical shaft output at 460 V [hp]12001350
Typical shaft output at 480 V [kW]10001100
Enclosure sizeF12/F13F12/F13
Output current (3-phase)
Continuous (at 400 V) [A]14601720
Intermittent (60 s overload) (at 400 V) [A]16061892
Continuous (at 460/480 V) [A]13801530
Intermittent (60 s overload)(at 460/480 V) [A]15181683
Continuous kVA (at 400 V) [kVA]10121192
Continuous kVA (at 460 V) [kVA]11001219
Continuous kVA (at 480 V) [kVA]11951325
Estimated power loss at 460 V [W]
Maximum added losses A1 RFI, circuit breaker or disconnect, and contactor [W], (F4 only)22802541
Maximum panel options losses [W]400400
Eciency
Output frequency [Hz]0–5900–590
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P800P1000
12x150 (12x300
mcm)
6x120 (6x250 mcm) 6x120 (6x250 mcm)
6x185 (6x350 mcm) 6x185 (6x350 mcm)
15001500
1808420358
1713717752
0.980.98
85 (185)85 (185)
12x150 (12x300
mcm)
77
Table 7.6 Electrical Data for Enclosures F12/F13, Mains Supply 6x380–480 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
±
2) Typical power loss is at normal conditions and expected to be within
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to drives.danfoss.com/knowledge-center/energy-
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
15% (tolerance relates to variety in voltage and cable conditions). These
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]355400450500
Typical shaft output at 575 V [hp]450500600650
Typical shaft output at 690 V [kW]450500560630
Enclosure sizeE1/E2E1/E2E1/E2E1/E2
Output current (3-phase)
Continuous (at 550 V) [A]470523596630
Intermittent (60 s overload) (at 550 V) [A]517575656693
Continuous (at 575/690 V) [A]450500570630
Intermittent (60 s overload) (at 575/690 V) [A]495550627693
Continuous kVA (at 550 V) [kVA]448498568600
Continuous kVA (at 575 V) [kVA]448498568627
Continuous kVA (at 690 V) [kVA]538598681753
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]560670750
Typical shaft output at 575 V [hp]7509501050
Typical shaft output at 690 V [kW]710800900
Enclosure sizeF1/F3F1/F3F1/F3
Output current (3-phase)
Continuous (at 550 V) [A]763889988
Intermittent (60 s overload) (at 550 V) [A]8399781087
Continuous (at 575/690 V) [A]730850945
Intermittent (60 s overload) (at 575/690 V) [A]8039351040
Continuous kVA (at 550 V) [kVA]727847941
Continuous kVA (at 575 V) [kVA]727847941
Continuous kVA (at 690 V) [kVA]87210161129
Estimated power loss at 690 V [W]
Maximum added losses for circuit breaker or disconnect and contactor
[W], (F3 only)
Maximum panel options losses [W]400400400
Eciency
Output frequency [Hz]0–5000–5000–500
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P710P800P900
8x150 (8x300 mcm) 8x150 (8x300 mcm)8x150 (8x300
mcm)
8x240 (8x500 mcm) 8x240 (8x500 mcm)8x240 (8x500
mcm)
8x456 (4x900 mcm) 8x456 (4x900 mcm)8x456 (4x900
mcm)
4x120 (4x250 mcm) 4x120 (4x250 mcm)4x120 (4x250
mcm)
4x185 (4x350 mcm) 4x185 (4x350 mcm)4x185 (4x350
mcm)
160016001600
95001087212316
98631130412798
427532615
0.980.980.98
85 (185)85 (185)85 (185)
77
Table 7.8 Electrical Data for Enclosures F1/F3, Mains Supply 3x525–690 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
±
2) Typical power loss is at normal conditions and expected to be within
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to drives.danfoss.com/knowledge-center/energy-
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
15% (tolerance relates to variety in voltage and cable conditions). These
Page 58
Specications
VLT® HVAC Drive FC 102
VLT® HVAC Drive FC 102
Normal overloadNONONO
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]85010001100
Typical shaft output at 575 V [hp]115013501550
Typical shaft output at 690 V [kW]100012001400
Enclosure sizeF2/F4F2/F4F2/F4
Output current (3-phase)
Continuous (at 550 V) [A]110813171479
Intermittent (60 s overload) (at 550 V) [A]121914491627
Continuous (at 575/690 V) [A]106012601415
Intermittent (60 s overload) (at 575/690 V) [A]116613861557
Continuous kVA (at 550 V) [kVA]105612551409
Continuous kVA (at 575 V) [kVA]105612551409
Continuous kVA (at 690 V) [kVA]126715061691
Estimated power loss at 690 V [W]
Maximum added losses for circuit breaker or disconnect and contactor
[W], (F4 only)
Maximum panel options losses [W]400400400
Eciency
Output frequency [Hz]0–5000–5000–500
Control card overtemperature trip [°C (°F)]
15% (tolerance relates to variety in voltage and cable conditions). These
Page 59
SpecicationsDesign Guide
VLT® HVAC Drive FC 102
Normal overloadNONONONO
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]355400450500
Typical shaft output at 575 V [hp]450500600650
Typical shaft output at 690 V [kW]450500560630
Enclosure sizeF8/F9F8/F9F8/F9F8/F9
Output current (3-phase)
Continuous (at 550 V) [A]470523596630
Intermittent (60 s overload) (at 550 V) [A]517575656693
Continuous (at 575/690 V) [A]450500570630
Intermittent (60 s overload) (at 575/690 V) [A]495550627693
Continuous kVA (at 550 V) [kVA]448498568600
Continuous kVA (at 575 V) [kVA]448498568627
Continuous kVA (at 690 V) [kVA]538598681753
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]560670750
Typical shaft output at 575 V [hp]7509501050
Typical shaft output at 690 V [kW]710800900
Enclosure sizeF10/F11F10/F11F10/F11
Output current (3-phase)
Continuous (at 550 V) [A]763889988
Intermittent (60 s overload) (at 550 V) [A]8399781087
Continuous (at 575/690 V) [A]730850945
Intermittent (60 s overload) (at 575/690 V) [A]8039351040
Continuous kVA (at 550 V) [kVA]727847941
Continuous kVA (at 575 V) [kVA]727847941
Continuous kVA (at 690 V) [kVA]87210161129
Estimated power loss at 690 V [W]
Maximum added losses for circuit breaker or disconnect and contactor
[W], (F11 only)
Maximum panel options losses [W]400400400
Eciency
Output frequency [Hz]0–5000–5000–500
Control card overtemperature trip [°C (°F)]
3)
1)
2), 3)
2), 3)
P710P800P900
8x150 (8x300 mcm) 8x150 (8x300 mcm)8x150 (8x300
mcm)
6x120 (4x900 mcm) 6x120 (4x900 mcm)6x120 (4x900
mcm)
4x185 (4x350 mcm) 4x185 (4x350 mcm)4x185 (4x350
mcm)
900900900
95001087212316
98631130412798
427532615
0.980.980.98
85 (185)85 (185)85 (185)
Table 7.11 Electrical Data for Enclosures F10/F11, Mains Supply 6x525–690 V AC
1) For fuse ratings, see chapter 10.5 Fuses and Circuit Breakers.
±
2) Typical power loss is at normal conditions and expected to be within
values are based on a typical motor eciency (IE/IE3 border line). Lower eciency motors add to the power loss in the drive. Applies for
dimensioning of drive cooling. If the switching frequency is higher than the default setting, the power losses can increase. LCP and typical control
card power consumptions are included. For power loss data according to EN 50598-2, refer to
eciency-directive/#/. Options and customer load can add up to 30 W to the losses, though usually a fully loaded control card and options for
slots A and B each add only 4 W.
3) Measured using 5 m (16.5 ft) shielded motor cables at rated load and rated frequency. Eciency measured at nominal current. For energy
eciency class, see chapter 10.12 Eciency. For part load losses, see drives.danfoss.com/knowledge-center/energy-eciency-directive/#/.
15% (tolerance relates to variety in voltage and cable conditions). These
drives.danfoss.com/knowledge-center/energy-
Page 61
SpecicationsDesign Guide
VLT® HVAC Drive FC 102
Normal overloadNONONO
(Normal overload=110% current during 60 s)
Typical shaft output at 550 V [kW]85010001100
Typical shaft output at 575 V [hp]115013501550
Typical shaft output at 690 V [kW]100012001400
Enclosure sizeF12/F13F12/F13F12/F13
Output current (3-phase)
Continuous (at 550 V) [A]110813171479
Intermittent (60 s overload) (at 550 V) [A]121914491627
Continuous (at 575/690 V) [A]106012601415
Intermittent (60 s overload) (at 575/690 V) [A]116613861557
Continuous kVA (at 550 V) [kVA]105612551409
Continuous kVA (at 575 V) [kVA]105612551409
Continuous kVA (at 690 V) [kVA]126715061691
Estimated power loss at 690 V [W]
Maximum added losses for circuit breaker or disconnect and contactor
[W], (F13 only)
Maximum panel options losses [W]400400400
Eciency
Output frequency [Hz]0–5000–5000–500
Control card overtemperature trip [°C (°F)]
Mains voltage low/mains voltage drop-out:
During low mains voltage or a mains drop-out, the drive continues until the DC-link voltage drops below the minimum stop
level, which corresponds typically to 15% below the lowest rated supply voltage of the drive. Power-up and full torque cannot be
expected at mains voltage lower than 10% below the lowest rated supply voltage of the drive.
Supply frequency50/60 Hz ±5%
Maximum imbalance temporary between mains phases3.0% of rated supply voltage
True power factor (λ)≥0.9 nominal at rated load
Displacement power factor (cos Φ) near unity(>0.98)
Switching on input supply L1, L2, L3 (power ups)Maximum 1 time/2 minute
Environment according to EN60664-1Overvoltage category III/pollution degree 2
The drive is suitable for use on a circuit capable of delivering up to 100 kA short-circuit current rating (SCCR) at 480/600 V.
77
1) Calculations based on UL/IEC61800-3.
1)
7.4 Motor Output and Motor Data
Motor output (U, V, W)
Output voltage0–100% of supply voltage
Output frequency0–590 Hz
Switching on outputUnlimited
Ramp times0.01–3600 s
1) Dependent on voltage and power.
Torque characteristics
Starting torque (constant torque)Maximum 150% for 60 s
Overload torque (constant torque)Maximum 150% for 60 s
1) Percentage relates to the nominal current of the drive.
2) Once every 10 minutes.
1), 2)
1), 2)
7.5 Ambient Conditions
Environment
E1/F1/F2/F3/F4/F8/F9/F10/F11/F12/F13 enclosuresIP21/Type 1, IP54/Type 12
E2 enclosureIP00/Chassis
Vibration test1.0 g
Relative humidity5–95% (IEC 721-3-3; Class 3K3 (non-condensing) during operation)
Aggressive environment (IEC 60068-2-43) H2S testClass Kd
Aggressive gases (IEC 60721-3-3)Class 3C3
Test method according to IEC 60068-2-43H2S (10 days)
Ambient temperature (at SFAVM switching mode)
- with deratingMaximum 55 °C (131 °F)
- with full output power of typical EFF2 motors (up to 90% output current)Maximum 50 °C (122 °F)
- at full continuous FC output currentMaximum 45 °C (113 °F)
Minimum ambient temperature during full-scale operation0 °C (32 °F)
Minimum ambient temperature at reduced performance-10 °C (14 °F)
Temperature during storage/transport-25 to +65/70 °C (13 to 149/158 °F)
Maximum altitude above sea level without derating1000 m (3281 ft)
Maximum altitude above sea level with derating3000 m (9842 ft)
1) For more information on derating, see chapter 9.6 Derating.
EMC standards, EmissionEN 61800-3
EMC standards, ImmunityEN 61800-3
Energy eciency class
1) Determined according to EN 50598-2 at:
Rated load.
•
90% rated frequency.
•
Switching frequency factory setting.
•
Switching pattern factory setting.
•
1)
IE2
7.6 Cable Specications
Cable lengths and cross-sections for control cables
Maximum motor cable length, shielded150 m (492 ft)
Maximum motor cable length, unshielded300 m (984 ft)
Maximum cross-section to motor, mains, load sharing, and brakeSee chapter 7 Specications
Maximum cross-section to control terminals, rigid wire1.5 mm2/16 AWG (2x0.75 mm2)
Maximum cross-section to control terminals, exible cable1 mm2/18 AWG
Maximum cross-section to control terminals, cable with enclosed core0.5 mm2/20 AWG
Minimum cross-section to control terminals0.25 mm2/23 AWG
1) For power cables, see electrical data in chapter 7.1 Electrical Data, 380–480 V and chapter 7.2 Electrical Data, 525–690 V.
1)
77
7.7 Control Input/Output and Control Data
Digital inputs
Programmable digital inputs4 (6)
Terminal number18, 19, 271), 291), 32, 33
LogicPNP or NPN
Voltage level0–24 V DC
Voltage level, logic 0 PNP<5 V DC
Voltage level, logic 1 PNP>10 V DC
Voltage level, logic 0 NPN>19 V DC
Voltage level, logic 1 NPN<14 V DC
Maximum voltage on input28 V DC
Input resistance, R
All digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
1) Terminals 27 and 29 can also be programmed as outputs.
Analog inputs
Number of analog inputs2
Terminal number53, 54
ModesVoltage or current
Mode selectSwitches A53 and A54
Voltage modeSwitch A53/A54=(U)
Voltage level-10 V to +10 V (scaleable)
Input resistance, R
Maximum voltage±20 V
Current modeSwitch A53/A54=(I)
Current level0/4 to 20 mA (scaleable)
Input resistance, R
Maximum current30 mA
Resolution for analog inputs10 bit (+ sign)
Accuracy of analog inputsMaximum error 0.5% of full scale
Bandwidth100 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Pulse inputs
Programmable pulse inputs2
Terminal number pulse29, 33
Maximum frequency at terminal 29, 33 (push-pull driven)110 kHz
Maximum frequency at terminal 29, 33 (open collector)5 kHz
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Minimum frequency at terminal 29, 334 Hz
Voltage levelSee Digital Inputs in chapter 7.7 Control Input/Output and Control Data
Maximum voltage on input28 V DC
Input resistance, R
i
Approximately 4 kΩ
Pulse input accuracy (0.1–1 kHz)Maximum error: 0.1% of full scale
Analog output
Number of programmable analog outputs1
Terminal number42
Current range at analog output0/4–20 mA
Maximum resistor load to common at analog output500 Ω
Accuracy on analog outputMaximum error: 0.8% of full scale
Resolution on analog output8 bit
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control card, RS485 serial communication
Terminal number68 (P, TX+, RX+), 69 (N, TX-, RX-)
Terminal number 61Common for terminals 68 and 69
The RS485 serial communication circuit is functionally separated from other central circuits and galvanically isolated from the
supply voltage (PELV).
Digital output
Programmable digital/pulse outputs2
Terminal number27, 29
Voltage level at digital/frequency output0–24 V
Maximum output current (sink or source)40 mA
Maximum load at frequency output1 kΩ
Maximum capacitive load at frequency output10 nF
Minimum output frequency at frequency output0 Hz
Maximum output frequency at frequency output32 kHz
Accuracy of frequency outputMaximum error: 0.1% of full scale
Resolution of frequency outputs12 bit
1) Terminals 27 and 29 can also be programmed as inputs.
The digital output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control card, 24 V DC output
Terminal number12, 13
Maximum load200 mA
The 24 V DC supply is galvanically isolated from the supply voltage (PELV), but has the same potential as the analog and digital
inputs and outputs.
Relay outputs
Programmable relay outputs2
Maximum cross-section to relay terminals2.5 mm2 (12 AWG)
Minimum cross-section to relay terminals0.2 mm2 (30 AWG)
Length of stripped wire8 mm (0.3 in)
Relay 01 terminal number1–3 (break), 1–2 (make)
Maximum terminal load (AC-1)1) on 1–2 (NO) (Resistive load)
Maximum terminal load (AC-15)1) on 1–2 (NO) (Inductive load @ cosφ 0.4)240 V AC, 0.2 A
Maximum terminal load (DC-1)1) on 1–2 (NO) (Resistive load)80 V DC, 2 A
Maximum terminal load (DC-13)1) on 1–2 (NO) (Inductive load)24 V DC, 0.1 A
Maximum terminal load (AC-1)1) on 1–3 (NC) (Resistive load)240 V AC, 2 A
Maximum terminal load (AC-15)1) on 1–3 (NC) (Inductive load @ cosφ 0.4)240 V AC, 0.2 A
Maximum terminal load (DC-1)1) on 1–3 (NC) (Resistive load)50 V DC, 2 A
Maximum terminal load (DC-13)1) on 1–3 (NC) (Inductive load)24 V DC, 0.1 A
Minimum terminal load on 1–3 (NC), 1–2 (NO)24 V DC 10 mA, 24 V AC 2 mA
Environment according to EN 60664-1Overvoltage category III/pollution degree 2
Relay 02 terminal number4–6 (break), 4–5 (make)
Maximum terminal load (AC-1)1) on 4–5 (NO) (Resistive load)
Maximum terminal load (AC-15)1) on 4–5 (NO) (Inductive load @ cosφ 0.4)240 V AC, 0.2 A
Maximum terminal load (DC-1)1) on 4–5 (NO) (Resistive load)80 V DC, 2 A
Maximum terminal load (DC-13)1) on 4–5 (NO) (Inductive load)24 V DC, 0.1 A
Maximum terminal load (AC-1)1) on 4–6 (NC) (Resistive load)240 V AC, 2 A
Maximum terminal load (AC-15)1) on 4–6 (NC) (Inductive load @ cosφ 0.4)240 V AC, 0.2 A
Maximum terminal load (DC-1)1) on 4–6 (NC) (Resistive load)50 V DC, 2 A
Maximum terminal load (DC-13)1) on 4–6 (NC) (Inductive load)24 V DC, 0.1 A
Minimum terminal load on 4–6 (NC), 4–5 (NO)24 V DC 10 mA, 24 V AC 2 mA
Environment according to EN 60664-1Overvoltage category III/pollution degree 2
The relay contacts are galvanically isolated from the rest of the circuit by reinforced isolation (PELV).
1) IEC 60947 part 4 and 5.
2) Overvoltage Category II.
3) UL applications 300 V AC 2 A.
2), 3)
2), 3)
400 V AC, 2 A
400 V AC, 2 A
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Control card, +10 V DC output
Terminal number50
Output voltage10.5 V ±0.5 V
Maximum load25 mA
The 10 V DC supply is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control characteristics
Resolution of output frequency at 0–1000 Hz±0.003 Hz
System response time (terminals 18, 19, 27, 29, 32, 33)≤2 m/s
Speed control range (open loop)1:100 of synchronous speed
Speed accuracy (open loop)30–4000 RPM: Maximum error of ±8 RPM
All control characteristics are based on a 4-pole asynchronous motor.
Control card, USB serial communication
USB standard1.1 (full speed)
USB plugUSB type B device plug
VLT® HVAC Drive FC 102
NOTICE
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
The USB connection is not galvanically isolated from ground. Use only isolated laptop/PC as connection to the USB
connector on the drive or an isolated USB cable/converter.
7.8 Enclosure Weights
Enclosure380–480/500 V525–690 V
E1270–313 kg (595–690 lb)263–313 kg (580–690 lb)
E2234–277 kg (516–611 lb)221–277 kg (487–611 lb)
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Table 7.13 Enclosure E1–E2 Weights, kg (lb)
Enclosure380–480/500 V525–690 V
F11017 kg (2242.1 lb)1017 kg (2242.1 lb)
F21260 kg (2777.9 lb)1260 kg (2777.9 lb)
F31318 kg (2905.7 lb)1318 kg (2905.7 lb)
F41561 kg (3441.5 lb)1561 kg (3441.5 lb)
F8447 kg (985.5 lb)447 kg (985.5 lb)
F9669 kg (1474.9 lb)669 kg (1474.9 lb)
F10893 kg (1968.8 lb)893 kg (1968.8 lb)
F111116 kg (2460.4 lb)1116 kg (2460.4 lb)
F121037 kg (2286.4 lb)1037 kg (2286.4 lb)
F131259 kg (2775.7 lb)1259 kg (2775.7 lb)
Power cables are heavy and hard to bend. To ensure easy installation of the cables, consider the optimum placement of the
drive. Each terminal allows up to 4 cables with cable lugs or a standard box lug. Ground is connected to a relevant
termination point in the drive.
Illustration 8.3 Detailed Terminal Dimensions for E1/E2
Illustration 8.11 Gland Plate Dimensions for E1/E2
8.2.2 E2 Terminal Dimensions
Power cables are heavy and hard to bend. To ensure easy installation of the cables, consider the optimum placement of the
drive. Each terminal allows up to 4 cables with cable lugs or a standard box lug. Ground is connected to a relevant
termination point in the drive.
Illustration 8.12 Detailed Terminal Dimensions for E1/E2
Power cables are heavy and hard to bend. To ensure easy installation of the cables, consider the optimum placement of the
drive. Each terminal allows up to 4 cables with cable lugs or a standard box lug. Ground is connected to a relevant
termination point in the drive.
88
1Mains terminals2Ground bar
Illustration 8.21 Terminal Dimensions for F1–F4 Rectier Cabinet, Front View
Power cables are heavy and hard to bend. To ensure easy installation of the cables, consider the optimum placement of the
drive. Each terminal allows up to 4 cables with cable lugs or a standard box lug. Ground is connected to a relevant
termination point in the drive.
88
1Mains terminals2Ground bar
Illustration 8.28 Terminal Dimensions for F1–F4 Rectier Cabinet, Front View