The hottest safety mode switch is not just an opti

Safety mode switch: not just a choice

Abstract: in the field of industrial automation, the use scenario of mode selection switch is more complex, and often accompanied by additional risks. During the use of a mechanical equipment, tasks such as setting, teaching, process conversion, fault finding, cleaning or maintenance of the machinery may be encountered. These tasks may require removing or shielding protective devices while maintaining the operation of dangerous parts of the machine

mode selection switch is commonly used in electronic and electrical products in our life, such as the dial wheel of SLR camera for the selection of exposure mode; The shift lever of the car is used for driving mode switching; The knob of the multimeter is used to select various gears such as current/voltage

in the field of industrial automation, the use scenario of mode selector switch is more complex, and often accompanied by additional risks. During the use of a mechanical equipment, tasks such as setting, teaching, process conversion, fault finding, cleaning or maintenance of the machinery may be encountered. These tasks may require removing or shielding protective devices while maintaining the operation of dangerous parts of the machine

facing operators with different technical levels, how to balance authorization management, operation safety and operation feasibility, and implement reasonable and effective risk control is usually a topic that some manufacturing enterprises have to face

the most common mode selection in life

safety requirements in the standard

for the risk control after switching different modes of equipment, both the International Electrotechnical Commission and the international organization for standardization have mentioned the relevant safety requirements in their published standards (IEC, ISO 12100)

first, considering the working mode of the mode selection switch itself:

a) you can use keys or codes to prevent unauthorized mode switching

b) you need to equip measures such as direction position and indicator light to characterize the currently selected mode

c) ensure that under the current selected mode, all other control modes do not work

second, From the perspective of additional protective measures:

A) only by using the continuously driven enabling, two handed or hold run device, can the operation of dangerous parts be allowed

b) introduce the dynamic control restrictions of new customers in the market, such as deceleration, Reduce risk by reducing power and other measures

c) limit the moving direction and range of moving parts to reduce risk

implementation of safe mode selection

implementation of safe mode selection also needs to be based on standard requirements, From the perspective of hardware and software:

there is a great demand for modified plastics. 1) in terms of hardware, products with reliable working principle and high performance level are selected.

2) in terms of software, the control system is used to define the functional interval and parameter limits according to different modes.

piermagnetic's safe operation mode selection switch pitmode realizes the reliability of the working mode in principle. Insert the key and press the corresponding button, You can select the operation mode; At the same time, the current mode status is prompted in real time through the button body and the lowest LED indicator

pitmode

permissions and corresponding keys of pirci are divided into five levels from low to high, and the highest level is service level. Each key is coded separately to prevent tampering

coding key equipped with pitmode

except for hardware, the function interval and parameter limits in different modes need to be customized by the user

through pirci PNOZmulti 2 and its motion control expansion module, you can configure the speed range, motion direction, stop monitoring and so on separately. The whole setting can be completed only by dragging and parameter setting using the built-in function block

well, the United States has sent good news about the combination of external protection measures

so far, through the combination of hardware and software, we have easily realized the safe mode switching of Tongling Guochuan electronics, which is the representative of such enterprises. It not only adds authorization management to different operators under the tasks of production, debugging and maintenance, but also uses the technical restrictions of software implementation to further manage and control risks