Integrated Safety Expands

Until very recently, there has been a very vocal group of people insisting that safety and control networks should remain separate in all instances to guarantee timely delivery of safety communications. Though this group has not disappeared, it seems they are growing quieter as an increasing number of manufacturers deploy combined safety and control networks without incident.

综合安全和控制系统的一些知名示例包括Honeywell’s Process Knowledge Systemand艾默生过程管理的Deltav和Deltav SIS(which offers a separate, but integrated approach) for the process industries, andSiemens’ Simatic safety integrated controllersandRockwell Automation的Guardlogix控制器对于离散的制造行业。

A new addition to this list areBosch Rexroth’s SafeLogic and SafeLogic Compact controllers, serco CIP安全特性。该公司says it is offering these controllers, which integrate safety technology into the Sercos automation network, as a way to “simplify the development of complex machines” for OEMs.

Bosch Rexroth在宣布SafeLogic控制器的宣布时说：“ SERCOS安全协议上的CIP安全确保了从控制单元到驱动器的安全通信，没有其他接线。与Rexroth'Sdrive集成的Safemotion功能有关的安全性和安全性紧凑控制涵盖了所有基于安全性的自动化的所有复杂性。用户可以在同一工程环境中编程标准和安全功能。”

The safety function module of the SafeLogic controllers can also be used with Bosch Rexroth’s IndraMotion and IndraLogic product lines, in effect turning them into control solutions with integrated safety functions. The company says that any customer-specific modifications made in the standard control’s program sequence will have no feedback effects on the safety functions.

In addition, Bosch Rexroth says that SafeLogic’s multi-safety master functionality enables the integration of decentralized safety peripherals from various manufacturers.

对于不太复杂的应用程序，Bosch Rexroth为其Indradrive系列提供了Safemotion。SAFEMOTION功能适用于PL E（ISO 13849）和SIL 3（IEC 62061）的CAT 4的要求。SAFEMOTION监视最多16个安全和认证的运动功能，例如速度，旋转方向和位置。据说诸如安全门监测之类的新逻辑元素可以降低操纵的风险。

虽然很明显，安全和控制应用程序正在扩大，但仍将继续希望以不惜一切代价优化安全的公司，并在其白皮书中格兰特·莱塞尔（Grant Leseur）和施耐德电气公司（Schneider Electric）的菲尔·诺贝尔（Phil Knobel）指出：“综合控制和安全：评估利益，权衡风险”. LeSeur and Knoble point out that such companies will likely continue to maintain separate safety and control systems.

下面的视频展示了Bosch Rexroth的Indramotion MTX CNC，具有SafeLogic Compact。