5251-2 – Current Regulated Power Supply

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Produktbeschreibung

Model 5251-2 is an open frame, 0-1A current regulated power supply for use with Magtrol hysteresis brakes and clutches. It has a high input impedance that allows for a variety of sensors and transducers to be used. It features a selectable 0-100 mV/0-5 VDC monitor out that allows connection to a PLC, voltmeter, display or other monitoring device. This allows the user to monitor the current applied directly to the brake or clutch, if desired. With regulated current, torque drift caused by temperature changes within the brake coil is eliminated. Braking control is enabled by using either a 10-turn potentiometer or by an external 0–5 VDC control signal.

Ordering Information

5251-2Current Regulated Power Supply 115 VAC
5251-2ACurrent Regulated Power Supply 230 VAC

Specifications

Brake Voltage 24 VDC
Current Ranges 0-200 mA, 0-500 mA, 0-1000 mA
Current Regulation ±1% Full Scale
Braking Control 10-Turn Potentiometer or
0-5 VDC External Control
Current Monitor
Output		 Selectable Ranges:
0-200 mV DC
0-500 mV DC
0-1000 mV DC
0-5 V DC
Line Fuse
(5 x 20 mm)		 5251-2: 115 V IEC 1.0 A 250 V T
5251-2A: 230 V IEC 0.4 A 250 V T
Brake Fuse
(5 x 20 mm)		 IEC 1.25 A 250 V T
Power
Requirements		 70 VA
Voltage
Requirements		 115/230 VAC 50/60 HZ
Max. Compliance
Voltage		 45 VDC 
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                    [post_content] => The 5212 is a 0-1A current-regulated 24 VDC power supply and display that is designed for use with Magtrol’s hysteresis brakes and clutches. It features a 10-turn current adjustment potentiometer and 3 selectable current ranges: 200 mA, 500 mA, and 1000 mA. A convenient built in panel meter displays the value of output current.

The 5212 is designed as a closed-loop power supply to provide smooth application of current throughout an entire range up to a maximum set point. By utilizing regulated current, fluctuations in brake torque caused by temperature changes within the brake coil are eliminated. Braking current can be controlled manually from the front panel using the 10-turn potentiometer. Alternatively, if remote operation is required, the 5212 can be controlled by an external source using the 0-5 VDC control input located on the rear panel.
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                    [post_content] => Magtrol hat ein System entwickelt, welches garantiert, dass jede Bremse eines bestimmten Typs und Drehmoment/Strom-Arbeitspunkts mit jeder anderen Bremse desselben Typs, ungeachtet der Material- und Herstellungstoleranzen, abgeglichen werden kann.

Der Abgleich jeder Bremse im gewählten Arbeitspunkt erfolgt innerhalb einer Toleranz von ±1%. Die maximale Drehmomentabweichung von Bremse zu Bremse auf der gesamten Drehmoment/Stromkurve (von Drehmoment 0 bis zum ausgewählten, abgeglichenen Arbeitspunkt) übersteigt nicht ±4% des gewählten, abgeglichenen Drehmomentwerts. So abgeglichen und vorausgesetzt, dass alle Bremsen im Abgleichspunkt gleich erregt werden, kann die Zugkraft eines Systems mit einer grossen Anzahl von Zugkraftregulierungen innerhalb eines Toleranzbereichs von ±1% gehalten werden. Der gewählte Arbeitspunkt kann frei zwischen 50 und 100% des Nenndrehmoments gewählt werden. Dadurch können Bremsen für spezifi sche Anwendungen optimiert werden. Ohne andere Spezifikationen sind alle Bremsen auf 100 U/min abgeglichen.

Standard Bremsen gegenüber abgeglichene Bremsen



Abgeglichene Bremsen

Alle Magtrol Hysteresebremsen können abgeglichen werden. Bei der Bestellung muss einfach in der Modelnummer der Bremse HB durch MHB ersetzt werden. Bei Hohlwellenbremsen wird LB durch MLB ersetzt.

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                    [post_content] => Sollen Drehmomentmessung bzw. Drehmomentsteuerung bei höchstmöglicher Leistung erfolgen, sind die Hysteresebremsen der Serie AHB ideal. Durchgehende Rillen in der Bremse sorgen für Druckluftkühlung und dadurch hervorragende Wärmeableitung. Die Bauweise ermöglicht Dauerleistungen bis 3000 Watt (5300 Watt periodisch). Der Einsatz von vorgespannten Lagern bei den Hysteresebremsen der Serie AHB gestattet sogar Geschwindigkeiten von bis zu 25,000 U/min über einen längeren Zeitraum.

Die Bremsen der Serie AHB sind praktisch auf einer Grundplatte montiert. Die Grundplattenmontage mit einer integrierten, abgrenzbaren Klemmleiste bietet einfache Montage und Verdrahtung.
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