The PSD direct drives are mechatronic systems with integrated control, bus interface and absolute measuring system without battery. They are ideal for adjusting machine axes for format adjustments.

Thanks to the stepper motor with integrated control and bus communication, higher speeds are possible with low torques. This closes the gap to servo drives with a controller. The PSD direct drives impress with their significantly more compact design and low wiring effort, as no external controller is required - an economical solution for format adjusters.

Compact design
The direct drives from halstrup-walcher have a particularly compact design. Ideal for your slimline machine design

Maximum flexibility in configuration
Thanks to the variable alignment of the connector plugs and the optional rotatable attachment housing, the direct drives can be attached to the machine in any position. No angled connectors are required

Simple installation
The PSDs have a standardized NEMA flange for direct drives. The optional hollow shaft with torque support allows direct mounting to the spindle without a coupling.

100% repeat accuracy
Thanks to the monitoring with absolute encoder and the loop run / spindle compensation run, exact positioning is ensured despite spindle play. This ensures maximum repeat accuracy.

Larger travel range
With a positioning range of 977 ... 4026 revolutions, the PSD direct drives offer a large travel range. The absolute measuring system without battery ensures precise position feedback at all times.

Powerful start-up
Thanks to an adjustable starting torque/current, powerful starting is possible without any problems, even after standstill or in the event of contamination.

Dynamic adjustment
A high speed makes format adjustments more dynamic and thus shortens machine set-up times.

Safe even in the event of faults
The motor and control unit are electrically isolated, allowing the motor torque to be switched off without feedback.

Differential pressure transmitters are used to control ventilation and air conditioning systems and to monitor filters. The devices are also used in clean rooms or mini-environments to monitor negative and positive pressures. The renowned measurement technology manufacturer halstrup-walcher offers solutions for numerous areas of application for industrial or standard applications with its differential pressure meters.

Differential pressure transmitters for industrial applications: P 26, P34, P29

The differential pressure transmitters for high requirements work according to the inductive measuring principle. The core piece is a diaphragm made of beryllium bronze. Its deflection is measured without contact using inductive displacement transducers. It sits between two measuring chambers and can thus measure positive and negative differential pressure. The measuring cell does not wear out due to friction or mechanical influences. The material beryllium bronze is very springy. It has excellent long-term stability, good temperature behaviour and very low hysteresis. This makes the high-quality pressure transmitters suitable even for the smallest measurement ranges of a few pascals.

• High precision, fine minimum measurement ranges
• Margin of error: 0.2 % or 0.5 % of max. value (depending on selected option)
• Integrated cyclic zero correction keeps measured values stable even when the environment changes
• High overload protection due to built-in valve.
• Many adjustment and setting options: Measurement ranges freely scalable, square root output signal, relay settings (optional), time constant and zero point correction switch-off.
• In combination with primary elements, these pressure transmitters can also be used for volume flow measurement.

Differential pressure transmitters for standard applications: PU/PI, PS 27, PS 17

The differential pressure transmitters for standard applications work with different measuring cells. Their functions and accuracies are matched to basic requirements. They are the economical alternative for numerous applications.

• Compact pressure transmitters with linear curve
• Minimum measurement range: ± 50 Pa
• Also ± and asymmetric measurement ranges
• Optional LC displays for all 3 pressure transmitters

The growth of individualisation in the packaging industry is leading to ever smaller batch sizes. Moreover, customer wishes and specifications are creating challenges that require flexible machine solutions. Positioning systems automate format changes in machines with minimal changeover times and high repeatability. This dramatically reduces production downtime. With more than 25 years of experience in integrated drives, halstrup-walcher is a specialist in positioning systems for format changeover in machines.

To provide optimum support for machine builders, halstrup-walcher has developed a flexible modular system with a wide range of variants. This allows each application to be equipped with the correct drive. In its intelligent drives, the motor, motor control unit, bus communication and an absolute measuring system without battery are already integrated. These are complemented by a variety of monitoring, control and feedback functions. The PSx 3-series, which has been established on the market for many years, is based on durable and robust EC motors. The electric drives can also be provided with an NRTL certificate, which means they are certified compliant with UL, CSA and ANSI testing standards in the United States and Canada. The PSD product range uses stepper motors, which can also be used without gears and achieve higher speeds.

The hollow shaft allows the drives from both these product ranges to be mounted on the spindle without a coupling. This makes it extremely simple to upgrade machines by automating systems that previously relied on handwheels for format changeover. A range of modules are available to allow the customer to select the appropriate IP protection class for their application. With torques of 1.. 25 Nm, the compact drives can even adjust larger masses, supported by gearboxes integrated into the drive and the appropriate spindle pitch. The positioning systems have interfaces with all common buses, including IO-Link, to ensure easy integration into machine control systems. The manufacturer offers various description files and function modules for this purpose. halstrup-walcher’s extensive product portfolio offers machine builders the tools they need to meet the challenges of flexible machine design – both today and in the future.

Economically reduce set-up times: Positioning systems with intelligent PSxHub

halstrup-walcher has developed the intelligent PSxHub to implement the parallel operation of positioning systems for format adjustment as efficiently as possible: As an active bus component, the
smart connection element offers simple integration for up to 16 positioning systems from the PSD
family (PSD 4xx with IO-Link), ensures smooth communication with the controller and is economical
thanks to the single-cable solution with unshielded, standard A-coded cables, among other things.

The flexibly configurable synchronization control and monitoring integrated in the PSxHub ensures
synchronized parallel operation of the controlled positioning systems. As a flexible technology platform, the PSxHub enables a wider performance spectrum (e.g. in terms of power requirements
and synchronization) compared to classic IO-Link hubs without a control function. With its compact
housing design from 14.2 x 16.4 x 6.4 cm (control cabinet version), it is an efficient and space-saving
solution for central data and power transmission. The PSxHub is available for the Industrial Ethernet
systems PROFINET and EtherCAT (others on request).

Your advantages with the PSxHub:

• Simplified and cost-effective cabling
• Reduced effort for installation and initial start-up
• No tilting during parallel operation of several positioning systems thanks to optimum
  synchronization control in the hub
• Relief for the control system and machine bus
• Simple self-diagnosis and identification of the drives in the machine environment
• Fixed configuration of the hub enables simple modularization of machine components