ALSTOM L54E1100BC00

Product Name: ALSTOM (GE Energy) ALSPA® Micom / Turbine Control System — Protection / Trip / Logic I/O Card — L54E1100BC00 (CPRT1)

Product Brief:

Part of the ALSTOM L54E series (Micom P / T2000 / Speedtronic-compatible turbine control racks). L54E1100BC00 is commonly identified as a protection/trip relay or logic interface module used in steam/gas turbine protection and sequencing systems, interfacing contact inputs/outputs to the central processor (RDSP1 / MCR12 etc.).

Category: ALSTOM

Description

Technical Overview:

Series: ALSTOM L54E (ALSPA Micom / Turbine Control)
Function: Digital Input/Output or Trip Logic Interface (often referred to as CPRT1 — Contact Protection / Relay Trip module)
Backplane Bus: Proprietary ALSTOM L54E rack bus (VME-derived or parallel)
Inputs: Typically 16 or 32 opto-isolated contact inputs (24 VDC wet or dry)
Outputs: Often electro-mechanical relays rated 5 A @ 250 VAC / 30 VDC
Supply Voltage: +5 VDC (logic) and +24 VDC (field I/O) from rack power supply
Operating Temp: -20 °C to +65 °C (conformal-coated versions available)
Certifications: CE, UL 508, often SIL 2 capable in protection loops
Mechanical: Eurocard format, 6U or 3U, plugged into L54E rack

Application:

Turbine start-up/shutdown sequencing
Trip contact supervision (overspeed, low lube oil pressure, vibration)
Hardwired emergency stop and protection logic voting

Installation & Notes:

Verify slot assignment per system configuration drawing (processor expects module at specific address)
Handle by edges; observe ESD precautions
Relay contacts may require periodic contact resistance verification in safety-critical applications

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