BEW(S) Models

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Features of BEW(S) Models

These are compact power supplies for controlling spring-actuated brakes with rated voltages of 45 V DC/90 V DC/180 V DC. The direct current required to operate spring-actuated brakes can be obtained simply by connecting/inputting using 100 V AC, 200 V AC, or 400 V AC specifications.These are compact, lightweight models with limited functions that have terminal blocks that make wiring easy. They are simple power supplies that set only the input side and output side.

BEW(S) Models Specifications

BEW (S) Types

[Specifications]

Model	BEW-2S	BEW-4S
Input voltage	100 V AC	± 10％ 50/60 Hz	●		●
200 V AC		●		●
400 V AC					●
Maximum input voltage	AC250V	AC250V	AC510V	AC510V	AC510V
Rectification method	Half-wave rectification
Output voltage	DC45V	DC90V	DC45V	DC90V	DC180V
Output current	When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃	DC1.0A (DC0.6A)
Output Wattage	When the ambient temperature is 20℃ values in () are for an ambient temperature of 60℃	45W (25W)	90W (50W)	45W (25W)	90W (50W)	180W (100W)
Size setting	Voltage specifications numbers in parentheses are input in voltages	DC45V (AC100V)	DC90V (AC200V)	DC45V (AC100V)	DC90V (AC200V)	DC180V (AC400V)
●: Applicable △: Applicable depending on clutch/brake model	01	●	●	●	●	●
02	●	●	●	●	●
03	●	●	●	●	●
04	●	●	●	●	●
05	●	●	●	●	●
06	●	●	●	●	●
08	●	●	●	●	●
10	●	●	●	●	●
12		●		●	●
14		●		●	●
16		●		●	●
18		△		△	●
20		△		△	△
25		△		△	△
Applied clutches/brakes	MIKI PULLEY electromagneticactuated 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
1000 V AC, 50 Hz, 1 min.	2000 V AC, 50 Hz, 1 min.
Usage environment	With no condensation	－20℃ to ＋60℃
Mass	Per product	0.021 kg

Model

BEW-2S

BEW-4S

Input voltage

100 V AC

± 10％ 50/60 Hz

●

200 V AC

●

400 V AC

●

Maximum input voltage

AC250V

AC510V

Rectification method

Half-wave rectification

Output voltage

DC45V

DC90V

DC45V

DC90V

DC180V

Output current

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

DC1.0A (DC0.6A)

Output Wattage

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

45W (25W)

90W (50W)

45W (25W)

90W (50W)

180W (100W)

Size setting

Voltage specifications numbers in parentheses are input in voltages

DC45V (AC100V)

DC90V (AC200V)

DC45V (AC100V)

DC90V (AC200V)

DC180V (AC400V)

●: Applicable △: Applicable depending on clutch/brake model

●

△

●

△

Applied clutches/brakes

MIKI PULLEY electromagneticactuated 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

1000 V AC, 50 Hz, 1 min.

2000 V AC, 50 Hz, 1 min.

Usage environment

With no condensation

－20℃ to ＋60℃

Mass

Per product

0.021 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

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

[Characteristics]

Output type

BEW-2S/4S types take a commercial power supply as the input and generate a half-wave rectified DC voltage on the output side. These power supply devices are known for their very simple construction and low cost, but their voltage pulse is large. They are therefore prone to generating variations in operating response in electromagnetic clutches and brakes, they produce a howling noise when conducting, and they tend to generate more heat from their electromagnetic coils than full-wave rectified supplies or smoothing supplies.
When the above are to be avoided, consider changing to a full-wave rectified supply (BEW-R types), smoothing supply, or a DC 24 V specification.
[How to Calculate Output Voltage]
Output voltage = Input voltage × a (a set coefficient)
* a (set coefficient) = 0.45: half-wave rectification
(Ex.)
BEW-2S: AC100V × 0.45 = DC45V
BEW-4S: AC400V × 0.45 = DC180V
Note that when the rated voltage of the electromagnetic coil does not match the output voltage calculated above, you will not be able to obtain the electromagnetic clutch/brake characteristics given in the specifications.

[Wiring Methods and Timing Charts]

Primary Control

Secondary Control

BEW(S) Models

Features of BEW(S) Models

BEW(S) Models Specifications

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