TELEFRANK TZP80-2405/S Replacement for TZP Series

Product Overview

TELEFRANK TZP80-2405/S Replacement for TZP Series: Smooth Migration & Legacy System Compatibility

When your existing control cabinet relies on a TELEFRANK TZP80-2405/S DIN Rail power supply — or an equivalent legacy 80W 24VDC unit that has reached end-of-life — sourcing a verified, drop-in replacement is critical to keeping your production line running. The TZP80-2405/S delivers 80W of regulated 24VDC at 5A output, housed in a compact DIN rail-mount enclosure that fits directly into standard 35mm TS35 rails without any mechanical modification to your existing panel layout.

This unit is purpose-built for industrial automation environments where power supply continuity directly affects PLC uptime, I/O module stability, and field device reliability. Whether you are maintaining a legacy SIMATIC S7-300 rack, a Mitsubishi MELSEC Q-series chassis, or an Omron CJ2M control system, the TZP80-2405/S provides the stable 24VDC bus voltage that CPUs, digital I/O modules, analog signal conditioners, and communication gateways depend on for consistent operation.

Compatibility Comparison Table

Seamless Upgrade Solutions

A power supply replacement rarely happens in isolation. During a TZP80-2405/S swap, field engineers frequently audit adjacent components in the same control cabinet to ensure the entire 24VDC distribution chain is reliable. In practice, this means inspecting the terminal blocks and power distribution modules that branch the 24VDC bus to individual field devices — components such as Phoenix Contact or Weidmuller feed-through terminal blocks are common companions in the same DIN rail section.

If the cabinet also houses a Siemens SITOP PSU100S or a similar branded power supply in a redundancy configuration, the TZP80-2405/S can serve as the primary or backup unit depending on load balancing requirements. For systems running Schneider Electric Modicon M340 or M580 PLCs, the 24VDC rail feeds both the CPU backplane and distributed I/O modules such as the BMX DDI 1602 digital input module and BMX DAO 1605 digital output module — all of which require a stable, low-ripple 24VDC source that the TZP80-2405/S is rated to provide.

In retrofit projects involving older Allen-Bradley SLC 500 or MicroLogix 1400 panels, engineers often replace the original power supply alongside upgrading the communication interface — adding an Ethernet/IP gateway or a PROFIBUS DP adapter module to bridge legacy serial protocols to modern SCADA systems. The TZP80-2405/S powers these gateway modules reliably within the same rail section. Similarly, when migrating from RS-232 or RS-485 serial communication to PROFINET or EtherNet/IP, the additional 24VDC load from managed Ethernet switches and media converters mounted in the same cabinet is well within the TZP80-2405/S 5A output capacity.

For HMI-integrated panels — such as those running a Weintek MT8071iE or a Siemens SIMATIC HMI KTP700 Basic — the 24VDC supply must remain stable under combined CPU, I/O, and HMI loads. The TZP80-2405/S wide-range AC input (85–264VAC) also makes it suitable for international installations or sites with unstable grid voltage, reducing the need for additional voltage stabilizers in the cabinet.

Retrofit Guidance FAQ

Q: Can I reuse existing wiring when replacing my old 24VDC PSU with the TZP80-2405/S?
A: Yes. The TZP80-2405/S uses a standard screw terminal block for both AC input and DC output connections. As long as your existing wire gauges are rated for the current load, no rewiring is required — simply transfer the conductors to the corresponding terminals on the new unit.

Q: Will replacing the power supply require any PLC program changes?
A: No. The TZP80-2405/S is a passive DC bus supply with no communication interface. It does not interact with the PLC program, fieldbus network, or SCADA system. Program logic, I/O mapping, and communication configurations remain unchanged.

Q: Is the TZP80-2405/S compatible with PROFIBUS, PROFINET, or EtherNet/IP systems?
A: The power supply itself is protocol-agnostic — it provides 24VDC to the control system regardless of the fieldbus protocol in use. It is fully compatible with panels running PROFIBUS DP, PROFINET, EtherNet/IP, Modbus RTU, DeviceNet, or any other industrial protocol.

Q: What if my cabinet has limited DIN rail space?
A: The TZP80-2405/S occupies a standard compact footprint on a 35mm TS35 rail. Verify the available rail length in your cabinet before installation. In most standard 600mm or 800mm wide enclosures, the unit fits alongside existing terminal blocks and I/O modules without requiring panel modifications.

Q: How do I verify the replacement unit before installing it in a live system?
A: We recommend bench-testing the TZP80-2405/S with a resistive load equivalent to your system’s 24VDC draw before installation. Measure output voltage under load to confirm regulation within ±1%. This step minimizes commissioning risk and confirms unit integrity prior to live panel installation.

Warranty Assurance

Every TELEFRANK TZP80-2405/S unit shipped from TOPNLMS carries a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes output voltage verification, load regulation testing, and visual inspection to confirm it meets TELEFRANK factory specifications. In the event of a confirmed defect within the warranty period, TOPNLMS provides replacement support with priority processing to minimize your system downtime.

Orders are processed and dispatched from Xiamen, China, with standard international shipping options available. Expedited freight is available on request for urgent maintenance situations. All units are packaged in anti-static, shock-resistant packaging suitable for international air and sea freight.

For procurement inquiries, bulk pricing, or technical pre-sales support, contact our team directly.