ASTEC

Switching Power Supply – ASTEC LPT43

The LPT43 is a multi-output switching power supply unit (“Switching Power Supply Unit”) manufactured by ASTEC, belonging to the LPT series, designed to power control boards, operator interfaces and peripherals in CNC machine tools and industrial automation systems. The unit converts mains voltage into multiple regulated DC voltages (typically +5 V, ±12 V and +24 V DC) using high-frequency switching technology, delivering high efficiency, low ripple and protection against overload. It is not a conventional linear supply but a compact SMPS module with multiple independent outputs.

The power supply is the energy core of the CNC control cabinet: it provides all electronic boards with the service voltages without which no axis, no I/O and no interface can operate. A fault in the LPT43 causes the immediate shutdown of the entire machine; typical symptoms range from failure to power on to spontaneous resets, intermittent voltage errors and erratic axis behaviour under load.

ASTEC International was founded in 1975 as a pioneer in switching power supplies for the electronics and automation industries. Acquired by Emerson Electric, the products were absorbed into Emerson Network Power; the division subsequently became Artesyn Technologies (2014) and finally part of Advanced Energy Industries (2019). All products in the LPT series are legacy / discontinued: available exclusively as used, NOS or through specialist repair.

Main Technical Specifications

Switching Power Supply – ASTEC LPT42

The LPT42 is a compact switching power supply (“Switching Power Supply”) manufactured by ASTEC International, belonging to the LPT series of high-efficiency compact switching power supply modules. The unit converts AC mains voltage into multiple regulated DC outputs, typically +5 V, ±12 V and +24 V, intended to power the electronic control boards in CNC control cabinets and industrial automation systems. The LPT series is noted for its compact form factor and universal input range, which led to its widespread adoption across a broad range of machine tools and measurement systems throughout the 1980s and 1990s.

The power supply is the energy core of the CNC control system: without it, no electronic board — CPU, axis drives, I/O modules — receives the voltage required to operate. A power supply failure results in an immediate total machine shutdown; out-of-tolerance output voltages or excessive ripple can also cause intermittent malfunctions that are difficult to diagnose and may damage downstream boards.

ASTEC International (founded in 1970 in Hong Kong) was a pioneer in industrial switching power supplies, with an extensive product range covering automation, telecommunications and computing. Acquired by Emerson Electric, the product line was absorbed into Emerson Network Power and subsequently into Artesyn Embedded Technologies. Many models in the LPT series are legacy / discontinued: available only as NOS (New Old Stock), used, or through specialist repair.

Main Technical Specifications

Multi-Output Switching Power Supply – ASTEC LPQ113

The LPQ113 is a multi-output switching power supply (“Multi-Output Switching Power Supply”) manufactured by ASTEC, used as the main power unit in CNC controllers and industrial automation systems from various machine builders. The module delivers the regulated DC voltages required by logic boards, control circuits and system interfaces. The ASTEC reference code is LPQ113; no documented alternative codes or known revisions are recorded for this item.

The power supply is the central element of the energy distribution system within the CNC controller: it converts the mains voltage into regulated low-voltage outputs (+5 V, ±12 V and, typically, one or more auxiliary rails) essential for the correct operation of CPUs, memories, I/O boards and communication circuits. A power supply failure immediately results in the inability to start the machine or in hard-to-diagnose operating faults, causing unplanned machine downtime.

ASTEC International (Advanced Switching Technology) is a long-established manufacturer of switching power supplies for industrial, telecommunications and embedded applications, founded in Hong Kong in the 1970s. Acquired by Emerson Network Power, the business subsequently became part of Artesyn Technologies (now part of Advanced Energy Industries). All products in the LPQ series are legacy / discontinued: available only as used stock, surplus or through specialist repair.

Main Technical Specifications