Danfoss VLT Micro Drive FC 51 Series User manual

Operating Guide
VLT® Micro Drive FC 51
Without RFI filter
drives.danfoss.com

1
1.1
1.2
1.3
1.4
1.5
1.6
2
2.1
2.2
2.3
2.4
3
3.1
3.2
3.3
3.4
3.5
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.2.1
4.2.2
5
5.1
Contents
Introduction 5
Purpose of this Operating Guide 5
Trademarks 5
Additional Resources 5
Type Approvals and Certications 5
IT Mains 5
Disposal 5
Safety 6
Safety Symbols 6
Qualied Personnel 6
Safety Precautions 6
Safety Instructions 8
Installation 9
Before Commencing Repair Work 9
Side-by-side Installation 9
Mechanical Dimensions 9
Tightening of Terminals 10
Fuses 10
Branch Circuit Protection 10
Short-circuit Protection 10
Overcurrent Protection 10
Non-UL Compliance 10
Recommendation of Fuses 11
Connecting to Mains and Motor 11
Control Terminals 12
Power Circuit 15
Load Sharing/Brake 15
Programming 17
Local Control Panel (LCP) 17
Programming on Automatic Motor Tuning (AMT) 18
Mode 1 18
Mode 2 18
Parameter Overview 19
Parameter List 19
AQ348848915086en-000101/130R0943 | 3Danfoss A/S © 2020.09
Contents
VLT® Micro Drive FC 51
Operating Guide

6
6.1
7
7.1
7.2
8
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
8.12
9
9.1
9.2
9.3
10
10.1
Troubleshooting 24
Warnings and Alarms 24
Specications 26
Mains Supply 1x200–240 V AC 26
Mains Supply 3x380–480 V AC 26
General Technical Data 29
Protection and Features 29
Mains Supply (L1/L, L2, L3/N) 29
Motor Output (U, V, W) 29
Cable Length and Cross-section 29
Digital Inputs (Pulse/encoder Inputs) 29
Analog Inputs 30
Analog Outputs 30
Control Card, RS485 Serial Communication 30
Control Card, 24 V DC Output 30
Relay Output 30
Control Card, +10 V DC Output 31
Surroundings 31
Special Conditions 32
Derating for Ambient Temperature 32
Derating for Low Air Pressure 32
Derating for Running at Low Speeds 32
Options and Spare Parts 33
Options and Spare Parts 33
AQ348848915086en-000101/130R09434 | Danfoss A/S © 2020.09
Contents
VLT® Micro Drive FC 51
Operating Guide

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•
•
1 Introduction
1.1 Purpose of this Operating Guide
This Operating Guide provides information for safe installation and commissioning of the product. It is intended for use by qualied
personnel. Read and follow the instructions to use the drive safely and professionally. Pay particular attention to the safety instruc-
tions and general warnings. Always keep this Operating Guide available with the drive.
1.2 Trademarks
VLT®is a registered trademark for Danfoss A/S.
1.3 Additional Resources
Other resources are available to understand advanced drive functions and programming.
The Programming Guide provides greater detail on working with parameters and many application examples.
The Design Guide provides detailed information about capabilities and functionality to design motor control systems.
Instructions for operation with optional equipment and replacement of components.
Supplementary publications and manuals are available at: www.danfoss.com.
1.4 Type Approvals and Certications
1.5 IT Mains
NOTICE
IT MAINS
Installation on isolated mains source, that is IT mains. Maximum supply voltage allowed when connected to mains: 440 V.
As an option, Danfoss oers recommended line lters for improved harmonics performance. See chapter Options and Spare Parts.
1.6 Disposal
Do not dispose of equipment containing electrical components together with domestic waste.
Collect it separately in accordance with local and currently valid legislation.
AQ348848915086en-000101 / 130R0943 | 5Danfoss A/S © 2020.09
Introduction
VLT® Micro Drive FC 51
Operating Guide

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-
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2 Safety
2.1 Safety Symbols
The following symbols are used in this manual:
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates information considered important, but not hazard-related (for example, messages relating to property damage).
2.2 Qualied Personnel
To allow trouble-free and safe operation of the unit, only qualied personnel with proven skills are allowed to transport, store, as-
semble, install, program, commission, maintain, and decommission this equipment.
Persons with proven skills:
Are qualied electrical engineers, or persons who have received training from qualied electrical engineers and are suitably ex-
perienced to operate devices, systems, plant, and machinery in accordance with pertinent laws and regulations.
Are familiar with the basic regulations concerning health and safety/accident prevention.
Have read and understood the safety guidelines given in all manuals provided with the unit, especially the instructions given in
the Operating Guide.
Have good knowledge of the generic and specialist standards applicable to the specic application.
2.3 Safety Precautions
WARNING
HIGH VOLTAGE
AC drives contain high voltage when connected to AC mains input, DC supply, or load sharing. Failure to perform installation,
start-up, and maintenance by qualied personnel can result in death or serious injury.
Only qualied personnel must perform installation, start-up, and maintenance.
WARNING
UNINTENDED START
When the drive is connected to the AC mains, DC supply, or load sharing, the motor may start at any time, causing risk of death,
serious injury, and equipment or property damage. The motor may start by activation of an external switch, a eldbus command,
an input reference signal from the LCP or LOP, via remote operation using MCT 10 Set-up software, or after a cleared fault condi-
tion.
Press [O] on the LCP before programming parameters.
Disconnect the drive from the mains whenever personal safety considerations make it necessary to avoid unintended motor
start.
Check that the drive, motor, and any driven equipment are in operational readiness.
AQ348848915086en-000101 / 130R09436 | Danfoss A/S © 2020.09
Safety
VLT® Micro Drive FC 51
Operating Guide

•
•
•
•
•
-
-
-
-
NOTICE
The [O/Reset] key is not a safety switch. It does not disconnect the drive from mains.
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 indicator lights are o.
Failure to wait the specied time after power has been removed before performing service or repair work could result in death or
serious injury.
Stop the motor.
Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
Wait for the capacitors to discharge fully. The minimum waiting time is specied in the table Discharge time and is also visible
on the nameplate on top of the drive.
Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors
are fully discharged.
Table 1: Discharge Time
Size
Minimum waiting time (minutes)
M1, M2, and M3
4
M4 and M5
15
Leakage current (>3.5 mA)
Follow national and local codes regarding protective earthing of equipment with a leakage current >3.5 mA. AC drive technology
implies high frequency switching at high power. This generates a leakage current in the ground connection. A fault current in the
drive at the output power terminals might contain a DC component, which can charge the lter capacitors and cause a transient
ground current. The ground leakage current depends on various system congurations including RFI ltering, shielded motor ca-
bles, and drive power.
EN/IEC61800-5-1 (Power Drive System Product Standard) requires special care if the leakage current exceeds 3.5 mA. Reinforce
Grounding in 1 of the following ways:
Grounding wire of at least 10 mm2(8 AWG).
2 separate ground wires both complying with the dimensioning rules.
See EN 60364-5-54 § 543.7 for further information.
Using RCDs
Where residual current devices (RCDs), also known as earth leakage circuit breakers (ELCBs), are used, comply with the following:
Use RCDs of type B that can detect AC and DC currents.
Use RCDs with an inrush delay to prevent faults due to transient ground currents.
Dimension RCDs according to the system conguration and environmental considerations.
Motor thermal protection
Motor overload protection is possible by setting parameter 1-90 Motor Thermal Protection to [4] ETR trip. For the North American
market: Implemented ETR function provides class 20 motor overload protection, in accordance with NEC.
Installation at high altitudes
For altitudes above 2000 m (6562 ft), contact Danfoss regarding PELV.
AQ348848915086en-000101 / 130R0943 | 7Danfoss A/S © 2020.09
Safety
VLT® Micro Drive FC 51
Operating Guide

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•
2.4 Safety Instructions
Make sure that the drive is properly grounded.
Do not remove mains connections, motor connections, or other power connections while the drive is connected to power.
Protect users against supply voltage.
Protect the motor against overloading according to national and local regulations.
AQ348848915086en-000101 / 130R09438 | Danfoss A/S © 2020.09
Safety
VLT® Micro Drive FC 51
Operating Guide

1.
2.
3.
4.
3 Installation
3.1 Before Commencing Repair Work
Procedure
Disconnect the VLT® Micro DriveFC 51 from mains (and external DC supply, if present).
Wait for 4 minutes (M1, M2, and M3) and 15 minutes (M4 and M5) for discharge of the DC-link.
Disconnect the DC bus terminals and the brake terminals (if present).
Remove the motor cable.
3.2 Side-by-side Installation
The drive can be mounted side by side for IP20 rating units and requires 100 mm (3.9 in) clearance above and below for cooling.
Refer to chapter Specications for details on environmental ratings of the drive.
3.3 Mechanical Dimensions
A template for drilling is found on the ap of the packaging.
B
a
Aa A
a A
a A a A
C
CC C C
b
B
b
B
b
B
b
B
b
Ø 7mm
M5
M4
M3
M2
M1
Ø 7mm Ø 5.5mm Ø 4.5mm
e30bb321.11
Ø 4.5mm
Illustration 1: Mechanical Dimensions
Table 2: Mechanical Dimensions
Power [kW (hp)]
Height [mm (in)]
Width [mm (in)]
Depth
[mm (in)](1)
Maxi-
mum
weight
Enclo-
sure
1x200–240
V
3x380–480 V
A
A (including
decoupling
plate)
a
B
b
C
[kg]
M1
0.18–0.75
(0.24–1.0)
0.37–0.75 (0.5–
1.0)
150 (5.9)
205 (8.1)
140.4
(5.5)
70 (2.8)
55 (2.2)
148 (5.8)
1.0
M2
1.5 (2.0)
1.5–2.2 (2.0–
3.0)
176 (6.9)
230 (9.1)
166.4
(6.6)
75 (3.0)
59 (2.3)
168 (6.6)
1.5
M3
2.2 (3.0)
3.0–7.5 (4.0–
10)
239 (9.4)
294 (11.6)
226 (8.9)
90 (3.5)
69 (2.7)
194 (7.6)
2.8
M4
–
11.0–15.0 (15–
20)
292 (11.5)
347.5 (13.7)
272.4
(10.7)
125 (4.9)
97 (3.8)
241 (9.5)
5.6
AQ348848915086en-000101 / 130R0943 | 9Danfoss A/S © 2020.09
Installation
VLT® Micro Drive FC 51
Operating Guide

Power [kW (hp)]
Height [mm (in)]
Width [mm (in)]
Depth
[mm (in)](1)
Maxi-
mum
weight
M5
–
18.5–22.0 (25–
30)
335 (13.2)
387.5 (15.3)
315 (12.4)
165 (6.5)
140 (5.5)
248 (9.8)
9.1
1For LCP with potentiometer, add 7.6 mm (0.3 in).
3.4 Tightening of Terminals
NOTICE
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conduc-
tors required, 60–75 °C (140–167 °F) recommended.
Table 3: Tightening of Terminals
Power [kW (hp)]
Torque [Nm (in-lb)]
Enclo-
sure
1x200–240 V
3x380–480 V
Line
Motor
DC connection/
brake
Control termi-
nals
Ground
Relay
M1
0.18–0.75
(0.24–1.0)
0.37–0.75
(0.5–1.0)
0.8 (7.1)
0.7 (6.2)
Spade(1)
0.15 (1.3)
3 (26.6)
0.5 (4.4)
M2
1.5 (2.0)
1.5–2.2 (2.0–3.0)
0.8 (7.1)
0.7 (6.2)
Spade(1)
0.15 (1.3)
3 (26.6)
0.5 (4.4)
M3
2.2 (3.0)
3.0–7.5 (4.0–10)
0.8 (7.1)
0.7 (6.2)
Spade(1)
0.15 (1.3)
3 (26.6)
0.5 (4.4)
M4
–
11.0–15.0 (15–20)
1.3 (11.5)
1.3 (11.5)
1.3 (11.5)
0.15 (1.3)
3 (26.6)
0.5 (4.4)
M5
–
18.5–22.0 (25–30)
1.3 (11.5)
1.3 (11.5)
1.3 (11.5)
0.15 (1.3)
3 (26.6)
0.5 (4.4)
1Spade connectors (6.3 mm (0.25 in) Faston plugs).
3.5 Fuses
3.5.1 Branch Circuit Protection
To prevent re hazards, protect the branch circuits in an installation, switch gear, machines, and so on, against short circuits and
overcurrent. Follow national and local regulations.
3.5.2 Short-circuit Protection
Use the Danfoss recommended fuses to protect service personnel or other equipment if there is an internal failure in the unit or
short circuit on DC-link. If there is a short circuit on the motor or brake output, the drive provides full short-circuit protection.
3.5.3 Overcurrent Protection
To avoid overheating of the cables in the installation, provide overload protection. Always carry out overcurrent protection accord-
ing to national regulations. Fuses must be designed for protection in a circuit capable of supplying a maximum of 100000 Arms
(symmetrical), 480 V maximum.
3.5.4 Non-UL Compliance
If UL/cUL is not to be complied with, use the fuses mentioned in this chapter, which ensure compliance with EN50178/IEC61800-5-1.
If there is a malfunction, not following the fuse recommendation may result in damage to the drive and the installation.
AQ348848915086en-000101 / 130R094310 | Danfoss A/S © 2020.09
Installation
VLT® Micro Drive FC 51
Operating Guide