VA7 system description

Introduction

The VA7 vision artefact enables verification of the REVO vision probe (RVP), vision modules, and the ACM accessory to the ISO 10360-7 standard.

VA7 uses a backlit calibrated glass target powered through the configurable I/O socket on the SPA3-2 or through I/O on other servo power amplifiers or controllers, or by a 24 VDC 70 W PSU via the 2.5 mm DC socket. On an installation where a UCC AI / UCC BI is required, please contact Renishaw for further information.

It can be mounted horizontally for use with the VM10, VM11-2 and VM12 vision modules, or mounted vertically on a suitable fixture to verify ACM.

Operation

The VA7 artefact can be switched on or off using the I/O connection. Power can be drawn directly from the I/O connection and no additional power supply is required. Alternatively, VA7 can be powered using a 24 VDC 70 W PSU via the 2.5 mm DC socket. When using a PSU, the VA7 can be switched on or off by directly controlling the PSU. The VA7 must not be powered by both the DC socket and I/O connection at the same time. The verification routine is run by MODUS script, available from Renishaw on request. For the comfort of the user, it is recommended the VA7 should be immediately switched off once the verification routine has finished.

Thermal stability

It is recommended the VA7 is switched on 1.5 hours before use. This will allow the artefact to reach a stable temperature and ensure repeatable measurements. VA7 can also be left switched on continuously, ready for immediate use, however the high brightness of the LED backlight may be uncomfortable for the operator.