frenomat® und frenostat®
Electronic Brake Units
The quick and reliable way to bring things to a standstill
– with no mechanical wear
Hilger u. Kern Industrieelektronik
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Contents
Page
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• cUL approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• EU Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• Line choke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• Certification of mechanical stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Application / Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
frenomat 2 brake unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
frenostat 2000 brake unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Technical data: frenomat 2/frenostat 2000 brake units . . . . . . . . . . . . . . . . . . . . . . . . 9
Dimensions: frenostat 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Examples of circuits: frenostat 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
Accessory: line choke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Commissioning: frenomat 2/frenostat 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
International sales organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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General information
cUL approval frenostat and frenomat brake units listed at Underwriters Laboratories Inc.
Important for all export-oriented companies:
As of immediately, all frenostat and frenomat brake units from Hilger u. Kern Industrieelektronik are cUL listed. The UL File Number is 225692 and the Control No. is 1 Y D 1.
Listed units with UL makes it easier to export machinery and installations to the USA and Canada.
The UL-listed Size 2 is made of sheet steel and the line choke is integrated in the unit. Size 1 (36 and 60 A) is now supplied as a new plastic version.
EU Declaration of Conformity
Line choke
Hilger u. Kern Industrieelektronik here with declares with respect to the products it manufactures and named below
frenomat electronic brake unit, frenostat electronic brake unit,
that the requirements relating to electromagnetic compatibility (EMC) as laid down in EU Directive 89/336/EEC are met.
Assessment of the product has been based on the following standards:
•IEC 947-4-2 AC semiconductor motor controllers and starters
The emission limits laid down in the European standards do not exclude interference of receivers within a radius of 10 m.
During operation, i.e. braking, frenostat and frenomat electronic brake units remain within the limits of European standard EN 50081-2 (mains-borne interference) with regard to the power cables if a line choke
•EN 50081-1 Generic Emission Standard 03.93
•EN 50082-2 Generic Immunity Standard 08.94
The corresponding measurements have been confirmed and documented by the German technical inspectorate TÜV-Süd- west in Mannheim.
The units named above are labeled with a CE mark of conformity.
is installed directly on the line terminal. This accessory is available from Hilger u. Kern Industrieelektronik (see page 14). The enclosures of the frenostat brake units are made of environmentally friendly, recyclable materials.
Certification of mechanical stability
frenostat electronic brake unit No. 12524100 has been subjected to a type test in accordance with DIN 57 Part 2/VDE 0160 Part 2, Section 4.2.
This test is valid for all frenostat brake units that have been manufactured since January 1, 1978.
The results of the measurements taken
have revealed that the brake unit more than complies with the requirements laid down in VDE 0160 Part 2, Section 4.2.
Operational reliability of the frenostat brake unit was unaffected.
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Application / Operating principle
frenomat and frenostat electronic brake units
•reliably and quickly brake asynchronous motors to a standstill without requiring any maintenance or suffering any wear.
•are the perfect solution for shortening long coasting times (saving time and costs).
•are components that can be retrofitted in control cabinets without any problem.
•are maintenanceand wear-free.
Due to systematic action taken to meet the demands of the market, frenomat and frenostat electronic brake units have a
wider power spectrum than units comparable in design. In particular, the following features designed to increase service reliability must be highlighted:
•visual indication of the operating state
•proven snubber circuit to protect against voltage peaks
•generous rating of the heat sinks
•high degree of service reliability – even under rough service and ambient conditions – thanks to protective lacquering
•captive connecting screws
•automatic standstill monitoring.
Basic circuitry of the main circuit (basic layout) ▲
Braking torque curve with asynchronous motors as a factor of the speed ▲▲
Operating principle
A rugged power converter, working in conjunction with floating, digital control electronics, generates a powerful braking torque.
The braking effect is initiated by an adjustable direct current that flows through
the motor winding. A stationary magnetic field, which acts as a static field, retards the rotational movement of the rotor. The braking torque that results from this follows the curve depicted against the speed.
Application example: vibrating screen
A frenostat 2000 electronic brake unit brings the 30-kW drive to a standstill within just a few seconds. This prevents dangerous sympathetic (resonant) oscillations. Use of the frenostat 2000 made it possible to do without elaborate and costly concrete foundations.
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