Technical Specifications Part Number: 3DDE300412 Model: CMA132 Channel Quantity: Multi‑channel digital input Input Signal Type: AC/DC discrete switch‑state signal Optocoupler Galvanic Isolation: Between field‑side and control‑logic‑side Power Supply: Supplied by Synpol D rack internal back‑plane Operating Temperature: 0 ℃ to +60 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5‑95 %, non‑condensing Mounting Type: Synpol D rack plug‑in terminal board Protection Class: IP20 Certifications: CE
Functional Features Receives multi‑channel field‑site contact‑type switch‑state digital input signals. Each channel adopts optocoupler galvanic‑isolation design to isolate field‑side interference. Built‑in RC filter circuit suppresses field‑site contact‑bounce and high‑frequency interference pulse. Converts field‑site switch‑state signal into internal logic‑level signal and transmits to main control board via rack back‑plane bus. Front‑panel channel‑status LED indicators display on‑off state of each input channel. Plug‑in rack‑mount board structure facilitates on‑site spare‑part replacement.
Application Scenarios Synpol D turbine control system digital‑input terminal b
oard spare‑part replacement. Power‑plant steam‑turbine auxiliary equipment switch‑state signal acquisition cabinet.
Installation Requirements Align CMA132 board with Synpol D rack slot guide‑rail, insert board in place and lock board‑edge locking buckle. Connect field‑site switch‑contact signal cables to front‑side screw‑type terminals, tighten terminals to specified torque value. Complete cabinet protective earthing complying with Synpol D system grounding specifications. Separate digital‑signal cables and high‑power power‑cables. Reserve ventilation‑heat‑dissipation space around rack slot. Ambient operating temperature must stay within 0 ℃ ~ +60 ℃ without condensation.
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