BEW(FH) Models

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Features of BEW(FH) Models

These are compact, high-capacity overexcitation power supplies that can be used in the full range of electromagnetic clutches and brakes of rated voltage 45 V DC/90 V DC/180 V DC.Using these as overexcitation power supplies provides benefits such as longer (roughly double) service lives for electromagnetic clutches and brakes and shorter (roughly halved) armature pull-in times. Using these as weak excitation power supplies provides benefits such as lower power consumption (roughly one-quarter), suppressed heat generation (roughly one-quarter) in the stator (electromagnetic coil), and shorter armature release times.

BEW(FH) Models Specifications

BEW (FH) Types

[Specifications]

Model	BEW-1FH	BEW-2FH	BEW-4FH
Input voltage	100 V AC	± 10％ 50/60 Hz	●	●
200 V AC			●	●
400 V AC					●	●
Input voltage range	AC80 ～ 130V	AC170 ～ 300V	AC80 ～ 480V
Control method	Overexcitation (full-wave rectified) for 0.5 sec followed by constant excitation (half-wave rectified)
Overexcitation	Constant excitation	Overexcitation	Constant excitation	Overexcitation	Constant excitation
Output voltage	DC90V	DC45V	DC180V	DC90V	DC360V	DC180V
Output current	When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃	DC1.6A (DC1.3A) Constant excitation	1.2 A DC (1.0 A DC) Constant excitation
Output capacity	When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃	72 W (58 W) Constant excitation	144 W (117 W) Constant excitation	216 W (180 W) Constant excitation
Size settings	Purpose for use	Using overexcitation	Using weak excitation	Using overexcitation	Using weak excitation	Using overexcitation	Using weak excitation
Clutch/brake rated voltage	DC45V	DC90V	DC90V	DC180V	DC180V	DC360V
●: Applicable	01	●	●	●	●	●
02	●	●	●	●	●
03	●	●	●	●	●
04	●	●	●	●	●
05	●	●	●	●	●
06	●	●	●	●	●
08	●	●	●	●	●
10	●	●	●	●	●
12		●	●	●	●
14		●	●	●	●
16		●	●	●	●
18		●	●	●	●
20		●	●	●	●
25		●	●	●	●
Applied cutches/brakes	MIKI PULLEY electromagnetic-actuated clutches and brakes Rated voltage DC 45/90/180 V	Spring-actuated brake
Insulating resistance	Between terminal and body	DC 500 V, 100 M Ω with Megger
2000 V AC, 50 Hz, 1 min.
Usage environment	With no condensation	－20℃ ～＋60℃
Mass	Per product	0.065 kg

Model

BEW-1FH

BEW-2FH

BEW-4FH

Input voltage

100 V AC

± 10％ 50/60 Hz

●

200 V AC

●

400 V AC

●

Input voltage range

AC80 ～ 130V

AC170 ～ 300V

AC80 ～ 480V

Control method

Overexcitation (full-wave rectified) for 0.5 sec followed by constant excitation (half-wave rectified)

Overexcitation

Constant excitation

Overexcitation

Constant excitation

Overexcitation

Constant excitation

Output voltage

DC90V

DC45V

DC180V

DC90V

DC360V

DC180V

Output current

When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃

DC1.6A (DC1.3A) Constant excitation

1.2 A DC (1.0 A DC) Constant excitation

Output capacity

When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃

72 W (58 W) Constant excitation

144 W (117 W) Constant excitation

216 W (180 W) Constant excitation

Size settings

Purpose for use

Using overexcitation

Using weak excitation

Using overexcitation

Using weak excitation

Using overexcitation

Using weak excitation

Clutch/brake rated voltage

DC45V

DC90V

DC180V

DC360V

●: Applicable

●

Applied cutches/brakes

MIKI PULLEY electromagnetic-actuated
clutches and brakes Rated voltage DC 45/90/180 V

Spring-actuated brake

Insulating resistance

Between terminal and body

DC 500 V, 100 M Ω with Megger

2000 V AC, 50 Hz, 1 min.

Usage environment

With no condensation

－20℃ ～＋60℃

Mass

Per product

0.065 kg

[Dimensions]

[Structure]

[Terminals and Functions]

Terminal symbol	Terminal name	Function description
1-2	Power supply input terminal	Connector for a commercial power supply
3-4	Output terminal	Connector for an electromagnetic clutch or brake
5-6	Control terminal	Output is controlled by opening and closing between terminals with a relay or other contact

Terminal symbol

Terminal name

Function description

1-2

Power supply input terminal

Connector for a commercial power supply

3-4

Output terminal

Connector for an electromagnetic clutch or brake

5-6

Control terminal

Output is controlled by opening and closing between terminals with a relay or other contact

[Characteristics]

Used as Overexcitation Supplies

BEW(FH) models go through about 0.5 sec of full-wave rectified output and then transition to half-wave rectified output. BEW-FH power supply devices create an overexcitation state by matching their constant excitation voltage to the rated voltage of the electromagnetic clutch/brake to obtain the following effects.
• Longer electromagnetic clutch/brake service life (about double)
• Shorter armature pull-in time (about half) to achieve high frequency operation
• Longer service life (about double)
• Reduced startup interference by combined use of a spring-actuated brake and a motor
Also, the following effects can also be obtained by determining the specifications of the spring-actuated brake under the assumption that a BEW-FH power supply will be used.
• Higher torque
• Thinner design and lighter weight

Use as a weak excitation power supply

Conversely to the above, matching the overexcitation voltage of the power supply unit to the rated voltage of the electromagnetic clutch and brake produces a weak excitation state after suctioning the armature and generates the below effects.
• Reduced power consumption (by approx. one-fourth)
• Decreased generation of heat (by approx. one-fourth) by the stator (electromagnetic coil)
• Slimmer and more compact

[Wiring Methods and Timing Charts]

Primary Control

Secondary Control

BEW(FH) Models

Features of BEW(FH) Models

BEW(FH) Models Specifications

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