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Servo Drives include safety circuit.

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January 21, 2010 - Available on PositionServo Drives with suffixes ES and RS, safety circuit disables drive output to motor so that drive cannot generate torque in motor. Termed Safe Standstill, safety function meets requirements of ISO 13849-1, which addresses safety circuits in programmable electronic systems. Even in event of single fault, ISO 13849-1 safety circuit will still function and disable drive.

Positionservo Now Available with ISO 13849 Safety Circuit


(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

Lenze AC Tech Corp.
630 Douglas St.
Uxbridge, MA, 01569
USA



Press release date: January 4, 2010

UXBRIDGE, MA - Lenze-AC Tech announces the release of the ISO 13849-1 Safety Circuit for their PositionServo drive.

According to company sources, PositionServo drives with suffixes "ES" and "RS" now include a safety circuit that disables the drive output to the motor so that the drive cannot generate torque in the motor. This safety function, termed "Safe Standstill," meets the requirements of ISO 13849-1 Safety of machinery -- Safety-related parts of control systems -- Part 1: General principles for design. The PositionServo ISO 13849-1 safety circuit provides a highly reliable disable of the drive. Even in the event of a single fault (single component failure) the ISO 13849-1 safety circuit will still function and disable the drive.

Dale Seidlitz, Quality and Safety Manager at Lenze-AC Tech, states that the ISO 13849-1 addresses safety circuits in programmable electronic systems, providing the customer with one more safeguard to protect his investment in automation equipment and personnel. "ISO 13849-1 uses probability to define performance levels in terms of category (structure), mean time to dangerous failure (MTTFd), diagnostic coverage (DC) and common cause failure (CCF), says Seidlitz, and he continues, "Fully characterizing those four parameters provides a clearer picture of the level of performance required for the safety circuit to disable the device in which it is installed. "

Explaining that Lenze-AC Tech drives are employed in many types of automated processes worldwide and the safety of both the equipment and personnel is paramount. Seidlitz comments, "Designing our products in accordance with the strict requirements of international safety standards just makes it easier for our global customers to purchase them."

Lenze-AC Tech develops, manufactures, markets and supports a complete range of motion control solutions, including servo drives and motors, clutches and brakes, gears and gear motors and variable frequency AC motor drives. Lenze-AC Tech's portfolio of AC Drive products extends from some of the world's smallest sub-micro drives up through large, 500 HP. With North American headquarters in Uxbridge, Massachusetts and a global network of distributors and representatives, Lenze-AC Tech is perfectly positioned to meet the motion management needs of customers throughout the world.

Lenze-AC Tech can be found online at www.lenze-actech.com
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