BEM(T) Models

These are compact power supplies for controlling spring-actuated brakes with rated voltages of 45 V DC/90 V DC/180 V DC. They are compatible with input voltages of 100 V AC, 200 V AC, or 400 V AC.The direct current required to operate spring-actuated brakes can be obtained simply by connecting/inputting. These are ultra-compact, slim power supplies that can be installed anywhere. The mountings are also movable, so the input/output direction can be set freely. Also, since the entire case is molded of resin, they can be used in adverse environments and atmospheres, such as dusty locations.

Specifications

Downloads

BEM (T) Types

[Specifications]

Model			BEM-2T		BEM-4T
Input voltage	AC100V	± 10％ 50/60 Hz	●		●
	AC200V			●		●
	AC400V						●
	Maximum input voltage		AC280V		AC480V
Rectification method			Half-wave rectification
Output voltage			DC45V	DC90V	DC45V	DC90V	DC180V
Output current	When the ambient temperature is 20℃ Values in parentheses are for an ambient temperature of 60℃		DC1.0A (DC0.6A)		DC0.7A (DC0.5A)
Output current			45W (25W)	90W (50W)	30W (20W)	60W (40W)	125W (90W)
Size setting	Voltage specifications Figures in parentheses are input voltages		DC45V (AC100V)	DC90V (AC200V)	DC45V (AC100V)	DC90V (AC200V)	DC180V (AC400V)
	●: Applicable △: Applicable depending on clutch or brake model	01	●	●	●	●	●
		02	●	●	●	●	●
		03	●	●	●	●	●
		04	●	●	●	●	●
		05	●	●	●	●	●
		06	●	●	●	●	●
		08	●	●	●	●	●
		10	●	●	●	●	●
		12		●		●	●
		14		●		△	●
		16		●		△	●
		18		△		△	●
		20		△		△	△
		25		△		△	△
Applied clutches/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
Dielectric strength voltage	Between terminal and body		1500 V AC, 50 Hz, 1 min.		2000 V AC, 50 Hz, 1 min.
Lead wire	UL style / Size		UL3398・AWG22		UL3613・AWG22
Usage environment	With no condensation		－20℃ ～＋60℃
Mass	Per product		0.008 kg		0.011 kg

[Dimensions]

[Structure]

[Terminals and Functions]

Terminal	Function name	Function description
Leads (two)	Input side	Connector for a commercial power supply
Tab terminals (two locations)	Output side	Connector for an electromagnetic clutch or brake

[Characteristics]

Output System

BEM-2T/4T 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, compact size, 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 (BEM-2F 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.) BEM-2T: AC200V × 0.45 = DC90V 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.