FASTECH

Characteristic

Ezi-SERVO BK series, FASTECH’s new unit product, maximizes User’s operational convenience with integration between Ezi-SERVO series of stepping motor and non-excitation electromagnetic brake that has big friction of brake torque and rapid brake timing.

Advantage

◆ Apply non-excitation electromagnetic brake: Different from excitation type of brake that only generates braking-power by electromagnetic-power when power supplies at brake and loses brake power when power cutoff, Ezi-SERVO BK series adopts non-excitation electromagnetic brake that immediately generate friction of brake torque by inner spring’s binding post-tensioning force once power cut off. So Ezi-SERVO BK series enables complete stopping of stepping motor and can forestall risks with brake’s mechanical braking-power under emergency situation as like sudden blackout in machine operation.

◆ Automatic Braking during power cutoff or blackout: Ezi-SERVO BK series, Unit product, integrated between high performance of non-excitation electromagnetic brake and step motor that enables immediate braking to keep holding point and prevent falling under power cut off or blackout during operation so customer can be flexible in responding to sudden situation.

◆ Long Durability: Brake integrated into Ezi-SERVO BK series applies long durability of brake wear plate(Brake Lining) so it guarantees high durability and long life cycle.

◆ Rapid Brake Timing: Ezi-SERVO BK series, non-excitation electromagneic brake, enables rapid braking because loaded spring closed brake can quicken rising of brake torque.

Allowable Overhung Load and Allowable Thrust Load of BK series

Motor Size	Allowable Overhung Load [N]				Based on Center of Shaft(mm)
	Allowable Thrust Load [N]
	3	8	13	18
42mm	22	26	33	46	Must Be Lower than Unit’s Weight
56mm	52	65	85	123
60mm	70	87	114	165
86mm	270	300	350	400

1. Drive Specification and Size: Please refer to the individual catalogue to check drive specification and size.

2. System Configuration and Setting/Operation: Please refer to the individual catalogue to check series’system configuration, Name and Function.

3. External Wiring Diagram: Please refer to the individual catalogue to check series’external wiring diagram.

Motor, Drive Combination

Unit Part Number	Motor Model Number	Drive Model Number
Unit Part Number	Motor Model Number	Drive Model Number	Ezi-SERVO-□-□-□-BK	EzM-□-□-BK	Not changed

※ It can be added BK at the end of model name of each series. T(he name of drive model is not changed.)

ex) The Part numbering method for in case of brake is adopted on 42mm of Ezi-SERVO ST series.

Unit Part Number	Motor Model Number	Drive Model Number
Unit Part Number	Motor Model Number	Drive Model Number	Ezi-SERVO-ST-42S-A-BK	EzM-42S-A-BK	EzS-PD-42S-A

Electromagnetic Brake Operation Timing Chart

Please release electromagnetic brake at least 0.5 sec later power input to the drive. If not, work can be falling

• Please use Cable at least thicker than AWG24 (0.2m²) when connect electromagnetic brake and power.
• Electromagnetic Brake is non-polar so there is no polarity in Brake Cable.
• Over input voltage can induce high temperature of electromagnetic brake and motor so it can be main reason of failure
• 반Reversely too low input voltage will cause non-operation of electromagnetic brake.