Make 32 from 3

SensoPart presents a versatile I/O extension box for the FA 45 vision sensor.

With 32 signal outputs, eight signal inputs, two ejector contacts, and control inputs for the connection of a trigger or encoder, the new FA 45 extension module opens up a wide range of application possibilities. Completeness checks and sorting applications, for example, can be easily carried out with the I/O extension box, now available as an accessory.

Every sensor user knows: there are never enough input and output ports. The FA 45 vision sensor from SensorPart can manage up to 32 independent characteristics internally but “only“ has three signal outputs. The extension module now makes it possible to allocate each internal characteristic to a separate output. The integrated control input also enables a differentiated temporal delay of the signal output.

The extension module offers two operating modes: In operating mode I, the serial data from the RS422 interface is converted to up to 32 discrete signal outputs; in this manner a discrete value can be emitted for each characteristic defined in the FA 45 vision sensor and e.g. passed to an LED array or SPC. Reversely, binary-coded 6 bit values can be transmitted from the SPC to the FA45 via the 8 signal inputs on the I/O extension module, in order to select one of the (max.) 32 configurations stored in the sensor – a practical function particularly for applications involving frequent product change-overs. 

Operating mode 1 is the module’s factory setting and can for example be used to check the contents of blister packs of 20 for completeness. Each blister is allocated to its own indicator lamp via the output extension.

If all the blisters are full, the machine continues in automatic mode. If, however, one blister is incomplete, the machine stops and the machine operator can immediately see from the indicator lamps which part is missing from the blister pack, without the need for a screen or PC. 

Temporally delayed control of ejectors

In operating mode 2, a temporal delay of the switching signal can be set for each individual output subject to an external trigger or encoder signal. The I/O extension module thus has a separate control input for this purpose. Both ejector contacts can be freely-allocated to the signal outputs, e.g. to eject certain parts from a conveyor belt or to carry out a sorting function. The encoder control ensures that the right part is always ejected regardless of belt speed and even after the belt has come to a standstill. The signal inputs are inactive in operating mode 2; the ejector contacts are deactivated in operating mode I.

The extension module is connected quickly and easily via detachable screw terminals. It is mounted on a top hat rail, for example in a switch cabinet. Module configuration is also simple: if the module is used purely for input/output extension (operating mode I), no settings are required; configuration of time delays (operating mode 2) is also very easy and is carried out via three operating keys and an LC display.