Conditions for Selecting and Using the Successor Model

When designing a new system or revising an existing machine , it is recommended to use the latest and most powerful devices. The successor models offer all the well-known advantages of the previous Bihl+Wiedemann ASi modules, plus a wealth of new functions and the best value for money.

When designing a new system or modernising an existing machine, it is important to select the right device with the required  technical features.

Especially, when exchanging an ASi slave or ASi Safety slave with a successor model in an existing machine, care must be taken to ensure that particular technical characteristics are as similar as possible or even better (depending on the desired upgrade of the machine) than the one you have:

• Number of (safe) inputs or outputs
• Number of allocated ASi addresses/ASi slaves per ASi circuit
• Supply voltage from ASi or from AUX
• Max. supply current/derating
• Number and position of connections for ASi, AUX and peripheral devices
• Pin assignment for modules with M12/M8 connections
• Dimensions
• Required version of Bihl+Wiedemann software suites for configuration, diagnostics and commissioning

The successor models recommended by Bihl+Wiedemann are always as similar as possible to the respective archive articles with regard to the above criteria and at the same time they offer as many new functions and improved technology as possible.

The number and position of the connections for peripheral devices (sensors, actuators) as well as for ASi and AUX (auxiliary power) vary to a certain extent between archived items and successor models depending on the design and performance characteristics of the particular device. In some cases, the dimensions between the devices may also differ.

Please make sure that there is sufficient space available for installation in the electrical cabinet and that the connecting cables are of sufficient length.

For the corresponding technical details, please refer to the datasheet and the attached documentation. An Eplan macro is also available for each unit as a download on the respective product detail page.

The ASi slave profile can vary to a certain extent between archived items and successor models depending on performance features and function. ASi slaves with different slave profiles are not exchange-compatible as successor models. The manual with the exchange instructions can be found in the enclosed documentation.

The bit assignment of the I/O data or process data can vary to a certain extent between archived items and successor models (e.g. number of inputs/outputs, use of the parameter bits) depending on their features and function range. Please check in advance whether your desired application requires adjustments in the programming of the higher level control.

For the corresponding technical details please refer to the datasheet and the attached documentation. If you have any questions about the bit assignment of ASi slaves, please feel free to contact our support team at any time.