Pneumatic Control Unit

Zwick control units comply fully with the requirements for safe operation as contained in the relevant standards.

The Zwick/Roell Group offers two versions of the pneumatic control unit.:

  • Pneumatic control unit operated via foot switch
  • PC-controlled pneumatic control unit
Pneumatic control unit

Significant Advantages and Features

Foot Control

Highest Level of Safety

  • The Machinery Directive 2006/42/EC imposes stringent safety requirements on pneumatic control units.
  • Inching mode and low actuation pressure provide optimal protection against pinching/jamming. The jaws open immediately if the pedal is released during closing.
  • If the Emergency STOP switch is activated, the machine's electrical chain brings the jaws to a halt immediately or returns them to the safe starting position in inching mode.
  • If the air or power supply is interrupted, the jaws will not make any uncontrolled movements or they are returned to the safe starting position in inching mode. Intentional one-time opening is available.
  • When the machine is switched off, the pneumatic control unit is in a "safe state".
  • The maximum closing speed of 10 mm/s, as required by the standard, is constant and independent from the supply pressure.

High Functionality and Ergonomics

  • This pneumatic control unit can be used in conjunction with all pneumatic grips from the Zwick portfolio.
  • In the event of pressure fluctuations or power supply failure, the pressure in the grips remains constant, and test results are not affected.
  • The ergonomic design of the rocker pedals ensures a high level of operator convenience.
  • The rocker pedals are hard anodized and protect against wear and tear.
  • The inching mode function enables correction of specimen alignment during the gripping procedure.
  • The closing pressure is indicated via a pressure gage, with stepless adjustment from 3 bar to 10 bar.
  • Maintenance and service friendly design (for example, manual bleeding).
  • A connection is made to the specimen grips and safety circuit of the testControl/testControl II control electronics.

PC controlled

  • The pneumatic control unit can be used in conjunction with all Zwick Roell pneumatic specimen grips with nominal forces from 200 N to 100 kN. This is a cost-efficient alternative to hydraulic grips.
  • The "Force Constant Hold" force stabilization system reliably protects the specimen from unwanted tensile or compression forces due to material flow or grip deformation during the closing and gripping process.
  • The gripping force of the specimen grips can be adjusted via two selectable operating modes, depending upon the properties of the specimen and the test conditions.
  • Ease of use and documentation of test parameters with the testXpert II testing software ensures reproducible, operator-independent test conditions.
  • The control unit has a maintenance-friendly design and offers comfortable remote control operation.
  • The gripping force can be adjusted for the application with the testXpert II stepless adjustable pressure from 1 to 10 bar, making it traceable and optimal for the test requirements.
  • The specimen grips are controlled via the ergonomic remote control or with testXpert II.

Technical Overview

Foot control

Description

Value

Type

Pneumatic control unit

Inlet pressure

3 ... 10

bar

Adjustable operating pressure

3 ... 8

bar

Connector, supply

NW7 nipple

Specimen grips connection

NW5 coupling

Ambient temperature

+10 ... +35

°C

Weight, approx.

14

kg

PC controlled

Description

Value

Type

Pneumatic control unit

Operating pressure PB

6 ... 10

bar

Power consumption:

0.4

kW

Voltage:

100 ... 250

V

Frequency

50 ... 60

Hz

Weight, approx.

35

kg

Ambient temperature

+10 ... +35

°C

A Standard Made in Germany

We manufacture products with maximum care and precision and supply state-of-the-art solutions for research and development to customers from every sector and industry. Our testing machines embody the proverbial quality of "Made in Germany." All of our testing systems comply with the current EC Machinery Directive.

Experience this yourself at our annual exhibition, testXpo, in Ulm.

Dr. Jan Stefan Roell
testXpo tent
  • Made in Germany
  • Safety for the entire testing system
  • Ergonomic operating concept
  • Flexible and ready for the next generation of technology
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