The HLA module has been designed to control (open-loop and closed-loop) electro-hydraulic control valves of hydraulic linear axes in conjunction with the SINUMERIK 840D sl. Up to two hydraulic axes can be controlled by this module.

To control a hydraulic linear drive, a control unit is required in addition to the HLA module. This unit can be either the NCU 7x0.3B PN, an NX or a CU320-2 Control Unit which operates under the control of a SINUMERIK 840D sl system. By combining a control unit with the HLA module, it is possible to create a highly dynamic, electro-hydraulic control circuit. A hydraulic linear axis can be combined and interpolated with other hydraulic or electrical axes on one SINUMERIK 840D sl.

The HLA module requires a 24V supply. This power supply is used to internally supply the HLA module and is also required by various sensors.

The HLA module generates the power supply for the control valves and the shutoff valves from an external DC voltage supply (e.g. SITOP) with a rated voltage of 26.5 V.

The purely hydraulic components, designed for CNC operation, must be supplied by the user.

Interfaces:

• 4 DRIVE-CLiQ sockets
• 1 Г— 24 V power supply for the electronic components
• 1 Г— 26.5 V power supply for the hydraulic components
• 2 TTL/SSI encoder connections (1 per axis)
• 6 pressure sensor inputs (3 per axis)
• 2 control valve connections (1 per axis)
• 2 shutoff valve outputs (1 per axis)
• 2 terminals forvalve spool sensors of the shutoff valves (1 per axis)
• 2 EP terminals (1 per axis)