Heidenhain AE-LS688 ID 597346-02 Scanning unit reader head

Buy online your Heidenhain AE-LS688 ID 597346-02 Scanning unit reader head from our UK e-store Cnc-shopping UK, specialist in CNC machine-tools spare parts.

The HEIDENHAIN AE-LS688, reference ID 597346-02, is an optical scanning unit designed for the LS 688 linear measuring system. It reads the scale graduations and provides precise incremental position feedback to the CNC control, enabling accurate axis positioning on machine tools.

The scanning unit features a 0.020 mm grating period and provides ~1 Vpp output signals. It uses a 14-pin male flange connector for electrical connection and is designed to operate with the corresponding LS 688 scale body.

The AE-LS688 is suitable for CNC milling machines, lathes and grinders, particularly on X, Y and Z axes requiring reliable linear position feedback. It can be used to replace a damaged or worn scanning head while retaining the existing scale body, provided the scale remains compatible and in good condition.

The exact identification ID 597346-02 should be checked against the original unit before replacement to ensure correct mechanical and electrical compatibility. Proper alignment and installation are essential for maintaining signal quality and measurement accuracy.

This HEIDENHAIN scanning unit is suitable as a replacement unit, spare part or CNC replacement component for maintenance and retrofit applications. A tested unit can be verified on dedicated encoder test equipment to check signal output and scanning performance, providing a practical solution for restoring axis feedback and reducing CNC machine downtime.

Frequently asked questions about AE-LS688:

How can I confirm compatibility with my LS 688 scale?
Match the ID on your original reader head to ID 597346-02 and verify the mechanical mounting and connector style. If your label differs, share photos and data so our team can confirm a like-for-like replacement.

Does this include the scale body and cable?
This offer is for the scanning unit only. The glass scale, extrusion and machine-side cabling are not included unless specifically stated on the product page.

Can it be used with non-HEIDENHAIN CNC controls?
Yes, many machines run HEIDENHAIN linear scales while using controls from other brands through the appropriate interface modules. Confirm your encoder interface with maintenance documentation before ordering.

What field symptoms point to a faulty reader head?
Common signs include intermittent encoder alarms, unstable position counts, loss of reference signal or following error spikes during axis moves. If the scale body is intact and clean, replacing the reader head is a typical corrective action.