CS ME-20XU24-TF3 Pizzato Expansion module 4NO+2NC, delayed at de-energizing

Why Choose the Pizzato CS ME-20XU24-TF3 Expansion Module?

The Pizzato CS ME-20XU24-TF3 is a compact safety expansion relay module with delayed outputs at de-energising, designed to increase the number of safety contacts available within industrial machinery and automation systems. As part of the Pizzato CS ME-20 safety expansion module series, it provides additional forcibly guided relay outputs while maintaining the high functional safety performance required for demanding machine safety applications.

The module provides 4 NO safety contacts, 2 NC auxiliary signalling contacts and 1 NC feedback contact. Its TF3 configuration provides a fixed 3 s release delay when the module is de-energised, making it particularly suitable for machinery where hazardous movement or another risk remains for a short period after the initiating safety circuit has been switched off.

Operating from a 24 V DC supply, the CS ME-20XU24-TF3 supports both single-channel and dual-channel control and is suitable for safety applications up to PL e and SIL 3. The X connection version uses connectors with spring terminals, while its compact 22.5 mm-wide format enables space-efficient DIN rail installation inside industrial control panels.

Key Advantages

• Compact safety expansion module with delayed outputs at de-energising.
• TF3 fixed 3 s release delay for controlled safety switching.
• 4 NO safety outputs expand the available safety contacts of a compatible control circuit.
• 2 NC signalling contacts plus 1 NC feedback contact support monitoring and control integration.
• Suitable for safety applications up to PL e and SIL 3.
• Supports single-channel or dual-channel control.
• Spring-terminal connectors provide convenient industrial wiring.
• Compact DIN rail format saves valuable control-panel space.

Key Features

• Pizzato CS ME-20 safety expansion module series.
• Delayed-at-de-energising relay outputs.
• TF3 fixed delay: 3 s.
• 4 NO safety contacts.
• 2 NC auxiliary signalling contacts.
• 1 NC feedback contact.
• 24 V DC supply voltage.
• Forcibly guided relay contacts.
• Single-channel and dual-channel control capability.
• PL e and SIL 3 functional safety capability.
• Connector with spring-terminal electrical connections.
• Compact 22.5 mm-wide DIN rail housing.

Delayed Safety Contact Expansion for Industrial Machinery

Safety expansion modules increase the number of safety-rated relay contacts available from a machine safety control system. The Pizzato CS ME-20XU24-TF3 adds four normally open safety contacts together with auxiliary signalling and feedback contacts, allowing a compatible safety circuit to control additional contactors, actuators or other safety-related devices.

Unlike an instantaneous expansion relay, the TF3 version keeps its delayed contacts in their operating state for a fixed 3 s after de-energisation. This controlled release can be useful where machinery requires additional time for hazardous movement to stop before downstream equipment, guards or related safety functions are released.

Typical Applications

• Expansion of industrial machinery safety relay outputs.
• Machinery requiring delayed contact release after de-energisation.
• Guard locking and controlled access systems.
• Machines with hazardous run-down or stopping periods.
• Multiple contactor and actuator control circuits.
• Automated production and processing equipment.
• OEM machinery and industrial electrical control panels.