Control Systems

A new Toggle Cam Output performs an asymmetrical toggle function, turning an output off or on for different stroke amounts. The output can be used to operate diverter gates and to control complex gagging operations. The new On/Off Counter Cam Output precisely controls functions that need to operate at a preset interval instead of on every machine cycle. Operating similarly, a new Pulsed Counter Cam Output is programmed with an “on angle” and a dwell time instead of an on-off output.

The RSH is designed for forces up to 7,943 lbf (35kN), speeds up to 20 in/sec (498 mm/sec) and stroke lengths up to 48 in. (1200mm). It is available in both ball screw and roller screw options. While ball screws are an economical option with medium life and force capabilities, roller screws (manufactured by Tolomatic) provide higher force capability, increased life and improved accuracy.

The fast controllers allow highly precise triggering with 0.01% time tolerance between signals. Trigger signals can be derived off absolute encoders or analog signals (sin/cos encoder), enabling higher precision, safer, and simplified solutions as compared to outdated digital encoder-only triggers. With the modern PI motion controllers, a trigger in an R-Theta configured system will work just as well as an XY position trigger, with the coordinate specifications simply defined in polar coordinates.

The control enhances the user-friendliness of the Quick Load Servo S3+, a bar feeder that is well suited for unattended and lights-out production thanks to its proven robustness and reliability. Accommodating spindle length bars with diameters from ¼” to 4 – ¾”, the bar feeder enables partial changeovers in 15 seconds or less and complete changeovers in 1 minute or less. A unique Parts Library function stores hundreds of part programs that simplify operator setups.

The integrated mechanism – composed of precise roller bearings, ball screw and guide – provides backlash-free, purely translatory motion. Furthermore, this results in very compact dimensions. The shaft end of the spindle features an external thread to mount conventional adapters, such as ball heads or clamping hooks typically used with pneumatic/hydraulic devices.

In an extremely compact form factor, the 24-mm-wide EL7062 EtherCAT Terminal contains two stepper motor output stages, two digital inputs for limit switches and one encoder interface per channel for a wide range of 5 V encoders. Via parameterization, the EL7062 flexibly adapts to the connected stepper motor and its corresponding application requirements. With regard to the input encoder signal, the module supports the entire spectrum of TTL encoders (5 V differential, single-ended/open collector). Very high-resolution microstepping ensures extremely smooth and precise motor operation.