BEW(S) Models

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.