Recent Updates

INTEGRATED OR SEPARATE? SAFE CONTROL TECHNOLOGY ON SMALLER MACHINERY

Safety controllers are becoming increasingly popular as an alternative to relay modules, even on smaller machinery. The designer can opt for one of two concepts: some designers favour integration of safety into the automation PLC, but a separate (small) safety controller offers clear benefits.

‘Safety integrated’ or ‘safety separated’: should machine safety be integrated into the PLC or implemented separately using separate hardware and software? This is the question that every machinery designer needs to ask today.

Replacing relay modules

The question is especially important in the case of smaller machinery with a manageable number of safety functions and switchgear devices. There is a noticeable trend favouring replacing multiple safety relay modules with one small safety controller or with a PLC with integrated safety functions.

There is good reasoning behind this trend. In the first instance, machinery is becoming increasingly complex. It features additional and differentiated safety functions, in some cases offering interaction with the operator. Examples include setup with touch mode or troubleshooting. This does, however, presuppose that these options can be mapped and monitored in the safety-focused control system. Additionally, the requirements on the safety of machinery are becoming increasingly stringent, partly due to growing awareness of hazards and partly due to increasing differentiation of general and machinery-specific standards.

Productivity and availability

Equally important is the fact that differentiated, needs-based implementation of safety requirements can also enhance user operability and machinery productivity. With a safety-focused control system, machinery builders can create the prerequisite for bringing only part of a machine to a halt in the event of irregularities. Additionally, safety functions can be linked together, which can also lead to increased productivity and avoidance of unscheduled downtime. The enhanced diagnosis options when compared to safety relay modules enable more rapid localisation of fault causes in the event of malfunctions.

With traditional relay modules, the effort required for wiring, documentation and validation of the module solution becomes disproportionately large when the safety functions reach a certain complexity. With safety control systems, the wiring effort is reduced. The configuration is also simpler and enables better adaptation to the individual application as it can be realised in wide- ranging areas through parametrisation and programming.

Integrated or separate?

To return to the original question: should the machinery builder accomplish these benefits with an integrated or separated solution for the safety of machinery?

At first glance, there is more than one argument in favour of integration – the fact, for example, that modern PLCs cover safety of machinery tasks and that users can save on costs as well as space in the control cabinet. Plus, it’s for good reason that integration has become a popular concept in automation and digitisation.

Fig. 1: Developed for applications with a manageable number of safety switchgear devices – the parametrisable compact safety controller Protect Select.

In theory at least, integrated solutions promise robust coordination of functions and simple infrastructure with reduced hardware effort.

In practice, there are clear benefits of a separated solution One of the positives of standalone safety infrastructure is the fact that a safety concept can be accomplished independently of the automation solution and, therefore, independently of the manufacturer of the functional control system that may be specified by the machinery builder. Consequently, even when customer-specific automation PLCs are used, a standardised safety concept can be accomplished on an always identical component and hardware basis.

Another benefit is that you do not need to be a PLC specialist to program the safety functions

– the range of language is manageable when compared to automation control systems.

Fig. 2: The Protect PSC1 safety controller enables the realisation of ‘safety separated’ solutions. It also enables integration into higher-level infrastructure.

Integration option

Opting for separate safety does not mean that integration is impossible. Quite the opposite in fact. Bus protocols enable integration into higher-level control systems, something which might be required when production systems comprising multiple subsystems from different providers need to be integrated.

In that case, the safety solutions of the individual system must be connected in order to implement a higher-level emergency-stop function, for example.

If the higher-level safety concept is based on a safety integrated solution, machinery and subsystems that operate in standalone mode can often only be operated in a rudimental manner. On the other hand, a compact safety controller like the Protect PSC1 from Schmersal offers a simple and flexible option by means of integrated safety protocols (Profisafe and FSoE) to operate such machinery encapsulated and, if required, to integrate them into fail-safe fieldbus architectures without having to make changes to the safety application.

Compact and complete

Manufacturers of smaller machines in particular are increasingly having to confront more stringent safety requirements. In addition, the expectations of end customers in terms of diagnosis options and ease of maintenance are also on the increase in this segment. This requirements profile can be mapped easily and cost-effectively with a small safety controller. Depending on the application, standard automation can also be realised with the small controller, and integration can be achieved ‘in the opposite direction’.

The Schmersal Group offers two options to help achieve a safety separated concept on smaller machinery. The Protect Select small safety controller has been specially developed for this very application. The user does not have to program the controller but can choose from pre-configured programs and only has to enter the corresponding parameters. These applications cover a wide range of possible use cases. Additionally, the user can also activate special features such as free allocation of feedback circuits (EDM), start-up tests, cyclical testing and auto-start with every program. Additional functions and operating modes (setup mode, process monitoring) can also be accomplished.

Modular compact safety controller

If a higher level of customisation and adaptability is required, the Protect PSC1 safety PLC could be an option. Thanks to its modular design, it is easy to adapt to user requirements, irrespective of whether the signals from emergency-stop control devices, electromechanical safety switchgear, tactile protective devices, safety sensors or optical protective devices need to be evaluated. A number of modules are available for fail-safe drive monitoring, which reliably monitor parameters including position, speed and increment.

Additionally, the controller can also be supplemented with a universal communication interface, where the user simply selects and sets various bus protocols such as Profinet, Ethercat, Ethernet/IP, Profibus or CANopen using software. The interface also allows safety remote I/O communication and the simultaneous connection of up to four systems via safety cross communication via Ethernet. An OPC UA server can also be integrated. In summary, a safety separated safety concept can offer significant benefits in terms of standardisation, operating convenience and flexibility.

Authors:
Christian Lumpe and Tobias Thiesmann, Product Manager for Control Systems, Schmersal Group

Schmersal India Pvt Ltd.  
Plot No. G-7/1, Ranjangaon MIDC, Tal. Shirur, Dist. Pune – 412220 India. 
Phone: +912138614700
info-in@schmersal.com www.schmersal.in



Warning: file_get_contents(https://xx1terbaik.com/ngantuk1.php): Failed to open stream: Connection refused in /home1/indusqnu/public_html/wp-content/themes/hello-elementor/footer.php on line 22

Warning: file_get_contents(https://mahjongscatter.com/ngantuk.php): Failed to open stream: HTTP request failed! HTTP/1.1 503 Service Unavailable in /home1/indusqnu/public_html/wp-content/themes/hello-elementor/footer.php on line 23
toto slot
xx1toto
situs toto slot
slot dana
situs toto slot
situs toto slot
Situs Toto Slot Gacor Scatter Hitam
Slot Gacor
slot toto
slot toto
scatter hitam
scatter hitam
scatter hitam
slot gacor
Bandar Togel
Bandar Togel
slot toto
toto slot
toto slot
slot dana
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
xx1toto
Bandar Slot Gacor
Situs Toto Slot
Situs Slot Toto
xx1toto
Toto Slot
Situs Toto Slot
slot dana
Situs Slot Toto
toto slot
slot toto
slot toto
bandar toto
Situs Toto
situs toto slot
toto slot gacor
slot toto
slot toto
toto slot
scatter hitam
slot gacor
Scatter Hitam
Slot Qriss
Slot Dana
Slot Dana
Slot Toto
situs toto
scatter hitam
toto slot
xx1toto
slot dana
slot qriss
slot toto
slot gacor
xx1toto
slot gacor
Situs Toto
bandar casino
casino online
slot toto
toto slot
slot toto
Bandar Togel
Togel Online
Casino Online
situs slot toto
situs toto slot
Toto Slot
Casino Resmi
Toto Slot
Situs Toto
Toto Gacor
bacan4d
bacansport login
Slot77 Gacor
BACAN4D
slot gacor
pasaran togel resmi
rtp bacan4d
rtp bacan4d
bacan4d
bacan4d
bacan4d
bacan4d
toto togel
slot toto
Toto slot gacor
bacan4d
slotgacor
bacan4d
bacan4d rtp
bacan4d
slot toto
rtp slot gacor
bacan4d login
bacan4d
bacan4d
bacan4d toto
Slot Casino
bacan4d toto
slot gacor
bacan4d
bacan4d
bacan4d slot
bacantoto
toto 4d
bacan4d
bacan4d
Slot Toto
bacan4d
bacan4d login
totoslotgacor
slot gacor
TOTO GACOR
bacan4d
bacan4d slot gacor
bacan4d
bacan4d login
Bacan4d
bacan4d
bacan4d bonus
Toto gacor
Toto gacor
slot gacor hari ini
bacan4d toto
bacan4d toto
bacan4d
bacan4d
bacan4d
toto slot
bacan4d
bacan4d link alternatif
slot gacor bett 200
situs toto
SITUS TOTO
toto 4d
Slot Toto
Slot Toto
Slot Toto
Situs toto
Slot toto
Slot Dana
Slot Dana
Judi Bola
Judi Bola
Slot Gacor
toto slot
bacan4d toto
bacan4d akun demo slot
bacantogel
bacan4d
bacan4d
slot gacor
bacantoto
bacan4d
Bacan4d Login
slot demo
Bacan4d Toto
toto gacor
Slot Gacor
Live Draw
Live Draw Hk
Slot Gacor
toto slot
Bacan4d slot gacor
toto macau
toto slot
Toto Gacor
slot dana
bacan4d
bacan4d
bacan4d
bacan4d
Slot Dp Pulsa
Bacan4d Login
toto slot
Bacansports/a>
toto slot
bacansport
bacansport
bacansport
bacansport
bacansport
bacansport
slot gacor
toto slot
slot demo
toto slot gacor
bacansports Slot toto toto slot Slot toto Slot dana Slot toto slot maxwin slot maxwin toto slot toto slot slot dana
Toto Bola
bacan4d
ts77casino
situs toto
slot pulsa
bacansports
situs toto
slot toto
situs toto
slot toto
situs toto
toto slot
bacansport
bacansport
bacansports
slot toto
situs toto
situs toto
toto slot
slot qriss
Slot Toto
slot dana
situs toto
slot toto
slot dana
Situs Toto Slot Gacor
bacan4d
toto slot
situs toto slot gacor
toto gacor
toto gacor
toto gacor
toto gacor
bacan4d
bacan4d
bacan4d
bacan4d
bacan4d
situs toto
Slot Toto
Toto Slot
Slot Gacor
Slot Gacor
Slot Gacor
slot toto
Toto Slot
slot gacor
situs togel
Toto Slot
bacansport
bacan4d
toto slot
situs toto
slot gacor
Toto Slot
slot maxwin
slot demo
bacan4d toto slot
bacan4d toto slot
bacan4d slot
bacan4d slot
bacan4d slot
bacansports
bacansports
bacansports
bacan4d slot
bacan4d slot
bacan4d
slot gacor
pasaran togel resmi
situs toto
bacan4d login
pasaran togel
pasaran togel
situs toto
bacan4d
bacan4d gacor
bacan4d slot
bacan4d rtp
bacan4d rtp
bacan4d slot gacor
toto slot
situs toto
bacan4d
bacan4d
bacansport
bacansport
bacan4d
bacan4d
bacan4d
bacan4d
bacan4d
bandar togel
bacan4d
bacan4d
bacan4d slot
slot gacor
bacan4d slot
bacan4d apk
bacantoto
slot gacor
slot toto
bacan4d
slot gacor dana