Variohm launches new low-cost single/multiturn magnetic absolute rotary encoder with CANopen interface
Article Type: New products From: Sensor Review, Volume 29, Issue 4
Variohm Eurosensor has released a new range of competitively priced high-resolution single/multiturn absolute rotary encoders from German position sensor specialists Wachendorff Automation GmbH (Figure 2).
The innovative WDGA series features an on-board 32-bit processor and full CANopen interface that handles the conversion of the encoder’s rugged magnetic position technology to output 4,096 steps per rev (12 bit) at rates up to 1 Mbaud and with a multi-turn capacity of 131,072 revs (17 bit). The WDGA series is ideal for space limited applications as a feedback device for positioning systems requiring long life and low maintenance – and unit pricing is estimated at 30 per cent below comparable technology.
The WDGA is built for maximum resilience and compactness with a nominal 36 mm diameter aluminium housing and stainless-steel shaft with dual low-friction precision bearing support. Protection rating is to IP67 protection with shaft sealing to IP65 (optional IP67) and operating temperature range is −40 to+80°C. Mounting alternatives are via standard 36 mm diameter synchro/resolver flange mount, a 58 mm diameter clamping flange or 6 mm diameter blind hollow shaft. Maximum speed for the clamping flange version is 12,000 rpm.
The extensive CANopen functionality includes a DS301 communication profile and DS-406 device profile. Position speed and acceleration output is included along with work area supervision, encoder cam and scaling capability plus comprehensive diagnostics.
