The BURKERT 20073480 (Type SVVI) is an electrical base module designed for the Type 8640 valve island system. This specific module features an 11 mm add-on dimension and provides 6 valve slots. The electronic base module is a core component of the valve unit, containing the electric plug connections for the valves and the electronics assembly for controlling the valves. It connects to neighboring modules via its electrical interface to receive both the power supply and the control signals for the valves on the valve slots.

For Type 8640, electronic base modules are available with slots for 6, 8, or 12 valves. Depending on the valve type used, 1 or 2 electrical outputs are provided per slot.

Electrostatically sensitive components and units

The modules contain electronic components that are susceptible to the effects of electrostatic discharging (ESD). Components that come into contact with electrostatically charged persons or objects are at risk. In the worst case scenario, these components will be destroyed immediately or fail after start-up.

• Meet the requirements specified by EN 61340-5-1 to minimise or avoid the possibility of damage caused by a sudden electrostatic discharge.
• Do not touch electronic components when the supply voltage is connected.

Disassembling and Installing Electronic Base Modules

Safety Precautions

• Risk of injury due to improper installation: Only trained specialist personnel may carry out installation and disassembly work. Only carry out installation work using suitable tools.
• Risk of injury due to high pressure and escaping medium: Secure the actuators against shifting before working on the modules/units. Switch off the pressure before working on the modules/units, device or system. Vent or empty the lines.
• Risk of injury from electric shock: Before working on the modules/units, device or system, switch off the power supply. Secure it against reactivation.

Type 8640 Assembly Structure

Item	Designation
1	Valve fastening screws
2	Connecting screws
3	Pneumatic base module
4	Electronic base module

Disassemble Electronic Base Module

1. Loosen the 2 fastening screws of each valve with a cross-tip screwdriver and remove the valves from the valve unit with the flange seal.
2. Loosen connecting screws between pneumatic base module and electronic base module.
3. Remove electronic base module from above.
4. Remove entire electronics assembly if necessary, so that the electronics assembly is completely disconnected from the pneumatics.

Install Electronic Base Module

Installation is carried out in the reverse order to disassembly.

1. Place electronic base module on pneumatic base module.
2. Connect both modules with the connecting screws.
3. When reinstalling the valves on the valve unit, ensure the flange seal is inserted correctly into the valve. Tighten the fastening screws of the valves crosswise.