Siemens TELEPERM M LDZ10500424.040 Modules

Technical Dossier

Product Details And Specifications

Siemens TELEPERM M Series Technical Notes

The Evolution of TELEPERM M Architecture

TELEPERM M was developed by Siemens as a successor to earlier pneumatic and analog control systems, providing a fully digital, rack-based DCS architecture. The system is organized around the AS 230 automation station, which houses CPU modules, I/O modules, and communication adapters in standardized 19-inch subrack assemblies. Early hardware generations used discrete TTL logic and proprietary ASICs; later revisions introduced improved noise immunity and expanded channel counts per module. The backplane bus operates on a time-division multiplexed protocol, and all analog I/O modules interface via this bus to the central processor. Compatibility between hardware generations is constrained by firmware revision and subrack type — mixing early-generation and late-generation modules requires careful verification of bus protocol versions. As of 2026, Siemens has officially discontinued TELEPERM M production and first-line support, placing the entire series in the End-of-Life (EOL) phase. This makes third-party lifecycle support, refurbished spare parts, and independent repair services the primary maintenance pathway for plant operators.

TELEPERM M Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the Siemens TELEPERM M platform. Each entry reflects a distinct hardware function within the DCS architecture.

LDZ10500424.040: Analog input/output module, multi-channel, 4–20 mA process signal interface for AS 230 subrack.
LDZ10500424.010: Analog input module, 8-channel, 4–20 mA current input, galvanically isolated per channel.
LDZ10500424.020: Analog output module, 4-channel, 4–20 mA current output, for final control element actuation.
LDZ10500424.030: Analog input module, thermocouple/RTD input, 8-channel, cold junction compensation integrated.
LDZ10500424.050: Analog mixed I/O module, 4 inputs / 4 outputs, 4–20 mA, for compact loop control applications.
LDZ10500410.010: Digital input module, 16-channel, 24 VDC, for binary process signal acquisition.
LDZ10500410.020: Digital output module, 16-channel, 24 VDC relay, for discrete actuator control.
LDZ10500410.030: Digital input module, 32-channel, 24 VDC, high-density binary input for large I/O counts.
LDZ10500410.040: Digital output module, 32-channel, 24 VDC transistor output, fast switching applications.
LDZ10500401.010: CPU module for AS 230 automation station, primary process controller, PROGRAF AP compatible.
LDZ10500401.020: CPU module, extended memory variant, for large control program applications.
LDZ10500450.010: Power supply module, 24 VDC output, for TELEPERM M subrack internal bus power.
LDZ10500450.020: Redundant power supply module, hot-standby configuration, for high-availability installations.
LDZ10500460.010: Communication adapter, SINEC H1 Ethernet interface, for plant network integration.
LDZ10500460.020: Communication adapter, PROFIBUS DP master interface, for field device connectivity.
LDZ10500460.030: Communication adapter, serial RS-232/RS-485, for legacy SCADA and historian integration.
LDZ10500470.010: Subrack bus coupler module, for multi-subrack expansion in large AS 230 configurations.
LDZ10500480.010: Pulse input module, 8-channel, for flow meter and encoder signal acquisition.

Sourcing Hard-to-Find & Obsolete TELEPERM M Parts

With Siemens having formally ended TELEPERM M production and support, procurement of replacement modules relies entirely on the secondary market, certified refurbishers, and specialist distributors. DriveKNMS maintains a dedicated inventory of TELEPERM M hardware sourced from decommissioned plant assets, controlled-environment storage, and verified supplier networks. All units are cataloged by part number, hardware revision, and functional test status prior to listing. For plant operators managing extended asset lifecycles — common in nuclear, refinery, and chemical sectors where DCS replacement projects span 5–15 years — DriveKNMS provides consignment sourcing, bulk lot procurement, and priority reservation for critical spare modules. Inquiries for specific revision levels, matched hardware sets, or large-quantity requirements are handled directly by the technical sales team.