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ALSTOM L54E1100EC00
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ALSTOM L54E1100BC00
ALSTOM L54E1100BC00
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ALSTOM L54E2901TW00
ALSTOM L54E2901TW00

ALSTOM L54E1100EC00

Product Name:​ ALSTOM ALSPA® Turbine Control System — 64 Logical Inputs / Digital I/O Card — L54E1100EC00 (E64L1 / ESV11)
Product Brief:​
L54E1100EC00 is a digital input/expansion module in the ALSTOM L54E series, frequently designated as a 64-point logical input card (E64L1) or ESV11-type I/O interface for turbine control and protection systems. It reads status contacts (valve limit switches, pushbuttons, pressure switch contacts) and feeds them to the turbine controller.
Category:
Description
Technical Overview:
  • Type:​ 64 Logical Inputs (or 32 DI + 32 DO variant in some configurations)
  • Input Type:​ 24 VDC wet contact (opto-isolated), active LOW or HIGH selectable
  • Scan Time:​ < 5 ms typical for all points
  • Backplane:​ ALSTOM L54E proprietary bus
  • Power Requirement:​ +5 VDC (logic) +24 VDC (field side) from rack PSU
  • Indicators:​ Per-point LED for input status; module RUN/ERR LEDs
  • Operating Temp:​ -20 °C to +65 °C
  • Certifications:​ CE, UL, SIL-capable depending on system architecture
Application:​
Turbine auxiliary monitoring — valve positions, breaker status, field device alarm contacts, local/remote selector switches.
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