Product Information

BEM(T) Models Specifications

BEM (T) Types


Input voltageAC100V± 10%
50/60 Hz
Maximum input voltage AC280V AC480V
Rectification method Half-wave rectification
Output voltageDC45VDC90VDC45VDC90VDC180V
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)
45W (25W)90W (50W)30W (20W)60W (40W)125W (90W)
Size setting Voltage specifications Figures in parentheses are input voltagesDC45V (AC100V)DC90V (AC200V)DC45V (AC100V)DC90V (AC200V)DC180V (AC400V)
●: Applicable △: Applicable depending on clutch or brake model01
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 wireUL style / SizeUL3398・AWG22UL3613・AWG22
Usage environment With no condensation -20℃ ~ +60℃
Mass Per product 0.008 kg 0.011 kg



[Terminals and Functions]

TerminalFunction nameFunction description
Leads (two)Input sideConnector for a commercial power supply
Tab terminals (two locations)Output sideConnector for an electromagnetic clutch or brake


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
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.

[Wiring methods and Timing Charts]

Primary Control

Secondary Control

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