Signo 721 Preset Counter

The Hengstler Signo 721 series preset counter, characterised by its broad range of setting options and an easy to read large backlit display, can handle count input frequencies of up to 60Khz for applications where fast count process capability is paramount.

A selection of bright displays are available; these are black digits on a reflecting background (LCD), or high-visibility white or red illuminated digits on a black background.

A menu-driven display offers ease of programming. Features include, up to two SPDT relays (5A @ 250V AC / 30V DC), decimal point positioning up to four places, scaling, NPN or PNP with high or low count input frequencies.

Program the relay outputs as a timed event upon reaching a preset value (0.01s to 599.99s) or latched until reset. The output status is identifiable on the front display; preset symbols illuminate if the outputs are active.

The reset can be automatic, manual or remote; additionally, the front reset button can be disabled upon set-up to prevent accidental operation.

Two separate input channels, A and B, can be used for directional counting; these inputs can also be programmed to accept a phased input from an encoder.

Auxiliary power (12-24V DC @ 50mA max.) when operating from an AC supply is available should you require direct wiring of an encoder or sensor.

Protection class ratings are IP65 (front side); the terminals are IP20. A spring clip that tightens against the panel secures the device to the panel cutout.

A removable plug-in terminal block with screw-type connections is to the rear of the counter provides for quick initial installation or speedy replacement without the need to re-wire saving downtime cost and to eliminate installation error.


Signo 721 series datasheet TTCC721 1.8MB
Signo 721 series instruction manual Doc-Nr. 2 721 205 3.9MB