Author Archives: bradcraggs

The universal encoder system U-ONE-(SAFETY-) Compact provides the same outputs as the old solution, but in just one compact and robust unit:

• Absolute encoder
• Electronic position switches

The unit can be mounted directly to the application shaft without using any distribution gear. For this Hübner Giessen provides special torsion resistant double-joint couplings. The switching points are easy to configure and the system can be restarted fastly after preset.

Optionally available with safety certification SIL 2 / PL d.

Upgrading to meet modern demands required suitable components for measuring actual values that are not only characterized by their high accuracy and functional reliability, but are also easy to program. Hübner Giessen replaced one of the geared cam limit switches with a series FG 4 K incremental encoder and an AMS 4 K type absolute encoder with integrated SSI interface. Fitting the devices to a bearing block increases their resistance to shock and vibration loads and compensates the mechanical tolerances of the installed, previous transfer gearbox. The other cam limit switch will also be replaced in a second modernizing step as will the mechanical overspeed switch be replaced by a programmable electronic overspeed switch.

In any case you can count on our support for the complete project.
From the first discussion to the installation support on site.

For each deployed transport vehicle Johannes Hübner Giessen supplied 2 separately excited, low-voltage, shunt-wound DC motors with an integrated spring-loaded brake from its GN 17 series. The motors are equipped with an additional integrated fan to cool the outer surface and are designed for intermittent operation (S3 42 % CDF). The rated motor torque is 17 Nm. The motors are capable of delivering a short-term overload of up to 50 Nm. A BAMOBIL battery controller is included in the Hübner Giessen scope of supply to regulate power to the DC shuntwound motor.

The permanent magnet three-phase synchronous generator DSG P 63.07.4 utilizes the rotating motion of the bull wheels of a lifting beam as a source of energy. The generator is driven via a rotating sheave and speed increasing gearbox with each lifting nd lowering motion of the crane. The generator supplies alternating voltage analogous to the speed; a rectifier converts the AC voltage to DC voltage. The charge controller monitors the charge status and the flow of energy to the battery. Implementing an autonomous auxiliary power supply in the form of well-coordinated overall solution gains valuable production time and safeguards operational reliability. The previous solution of having to change the battery every 14 days is not required any more.

With the encoder solutions implemented by us, the scope for a modernization is limited to a minimum. For example, our FGH 6 and FGH 8 encoders have an integrated mounting flange ex works. Thereby an additional encoder can easily be added to the existing encoder system.

This could be a freely programmable overspeed switch or a universal encoder system with fi ber optic signal transmission (both optionally SIL certified). But also an additional incremental encoder with different pulse rate could be an option.

In any case you can count on our support for the complete project.
From the first discussion to the installation support on site.