BES Models （For ordinary high-speed control）

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Features of BES Models （For ordinary high-speed control）

These are compact, high-capacity overexcitation power supplies that can be used in the full range of electromagnetic clutches and brakes of rated voltage 24 V DC/45 V DC/90 V DC developed for general high-speed control.The pull-in time of the armature is improved by applying an overexcitation voltage, relative to the rated excitation voltage, for an instant to achieve high-frequency high-precision operation of electromagnetic clutches and brakes.

BES Models （For ordinary high-speed control） Specifications

BES Models

BES Models

[Specifications]

Model	BES-20-□-1	BES-40-□-1	BES-20-□	BES-40-□
Input voltage	AC100V ± 10%　50/60Hz	AC100V ± 10%　50/60Hz	AC200V ± 10%　50/60Hz	AC200V ± 10%　50/60Hz
Output current	2.0 A	4.0 A	2.0 A	4.0 A
Voltage control method	PWM control
Constant excitation voltage	Adjusted for each model and size at the time of shipment
Overexcitation voltage	DC 90 V　Full-wave (with AC 100 V input)		DC 180 V　Full-wave (with AC 200 V input)
Overexcitation time	Adjusted for each model and size at the time of shipment
Protective functions	Input side　Quick-acting fuse (5A)
Insulating resistance	DC 500 V　With Megger　100 M Ω (between terminal and main body)
Dielectric strength voltage	AC 1000 V　50 Hz　1 min. (between terminal and main body)
Usage environment	－10℃ to ＋50℃/10％ to 90％ RH (with no condensation)
Mass	0.3 kg	0.7 kg	0.3 kg	0.7 kg

*The voltage that is output is not insulated from the power supply, so shocks can result if touched.

[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 1	Output is controlled by opening and closing between terminals using a relay or the like.
	Ground terminal	External ground terminal (third class ground or more)
S1-S2	Control terminal 2	Output is controlled by turning the DC 24 V on and off (30 mA, smoothing power supply)

[Characteristics]

Operating Response

All circuits have been made contactless, and response from signal input to output to the electromagnetic-actuated clutch or brake is fast and stable.

Energy Saving

Standby power is “zero.” Absolutely no electricity is wastefully consumed.
By combining this power supply with a MIKI PULLEY spring-actuated brake, the electricity consumption and heat generation of the springactuated brake is reduced by more than 70%, saving energy.

Noise During Operation

BES models use a quiet design, but electromagnetic clutches and brakes may produce excitation noise when operating under some mounting conditions. This noise is not abnormal and is not cause for concern.

Two Types of Control Systems

You can operate under either PLC control (which uses voltage control via programmable controllers or the like) or contactor control (which controls using relays and the like).
In the case of contactor control, however, a power controller for controlling the power supply line must be used.

Supply Voltage Fluctuations and Output Voltage

BES model power supplies are designed to operate reliably even when supply voltage fluctuates. Characteristically, however, their output voltage will rise or fall along with rises and falls of supply voltage. To fulfill electromagnetic clutch/brake performance, supply voltage fluctuations should be kept within a range of ± 10%.

[Wiring Methods and Timing Charts]

Wiring 1 (PLC Control)

Wiring 2 (Contactor Control)

Time Chart

[Table of Power Supply/Size Correspondence]

MIKI PULLEY electromagnetic-actuated clutch/brake size		02	025	03	04	05	06	08	10	12	16	20	25
Nominal power supply output current		20											40
Power supply size	Excitation voltage For 24 V ( Input voltage 100/200 V・Constant excitation voltage 24 V )	05					10			16		20	25

MIKI PULLEY electromagnetic tooth clutch sizes		12	13	15	21	23	25	31	32
Nominal power supply output current		20						40
Power supply size	Excitation voltage For 24 V ( Input voltage 100/200 V・Constant excitation voltage 20 V )	51			52			53

MIKI PULLEY spring-actuated brake size		01	02	03	04	05	06	08	10	12	14	16	18	20	25
Nominal power supply output current		20
Power supply size	Excitation voltage 45 V ( Input voltage 100 V・Constant excitation voltage 20 V ) Excitation voltage 90 V ( Input voltage 200 V・Constant excitation voltage 30 V ) Excitation voltage For 24 V ( Input voltage 100/200 V・Constant excitation voltage 10 V )	61 61 71								62 62 72			63 63 73