Description
METSO D201138L
Technical Specifications: Mixed digital input and output channels; input supports passive dry‑contact signal; output channel rated 24 VDC, 200 mA per channel; power supply from rack backplane; rack plug‑in installation; operating temperature range ‑40 ℃‑+55 ℃; each channel independent LED state indicator; channel electrical isolation; protection class IP20.
Functional Features: Integrated discrete‑signal acquisition and switching‑output function; hardware over‑current protection for output loop; loop fault diagnosis; single‑channel fault isolation; module self‑diagnosis; upload status data and fault‑alarm information to DCS host monitoring workstation; enhanced low‑temperature component guarantee stable startup and operation under low‑temperature cabinet environment.
Application Scenarios: Outdoor low‑temperature control cabinet of northern pulp‑and‑paper mill; thermal power plant outdoor auxiliary equipment DCS cabinet; open‑air chemical‑plant field control cabinet; low‑temperature mining‑site automation control cabinet.
Performance Parameters: Fast signal response speed; strong surge‑resistance capacity for input‑output loops; stable performance under rated load; normal startup and stable operation at low‑temperature environment of ‑40 ℃; satisfy industrial EMC anti‑interference requirement; support 7×24 hours long‑term continuous operation.
Material Composition: Fiberglass epoxy multilayer printed circuit board; low‑temperature‑grade optoelectronic isolation chips; wide‑temperature‑range power drive semiconductor components; gold‑plated edge connector; metal front baffle; low‑temperature resistant three‑proof conformal coating covered on circuit‑board surface.
Structural Features: Standard rack plug‑in modular card‑type structure, mechanical dimension fully consistent with D201138 standard version; front panel integrates LED indicators for power‑on, running, input‑channel status and output‑channel fault; rear gold‑plated edge connector is completely interchangeable with D201138; internal input‑circuit area and output‑circuit area are physically separated; mechanical anti‑loose locking buckle installed on front panel.
Working Principle: Field switching feedback signals transmit to D201138L input terminals. Internal low‑temperature‑grade isolation circuit converts contact state into digital‑logic signal and transmits to DPU controller. When receiving control command from upper system, internal drive component acts and outputs switching signal to drive field actuators. Module monitors each channel‑loop condition real‑time and triggers alarm when abnormality appears. Enhanced components ensure circuit normal work under low‑temperature environment.
Installation Requirements: Insert D201138L module into designated slot of Damatic XD I/O rack and cooperate with matched terminal base. Adopt shielded cables for input‑output signal wiring. Signal cables and high‑power power cables are laid in separate cable trunking. Cabinet protective‑grounding terminal must connect reliably. Even for low‑temperature environment, maintain proper ventilation inside cabinet and avoid direct cold‑wind blowing to module surface.
Precautions for Use: Strictly match field signal voltage level before power‑on. Do not exceed rated current load of output channel. Cut off rack backplane power and field load power before wiring maintenance. Wear anti‑static wrist strap during operation. Inspect wiring‑terminal tightness periodically. Even though module supports low‑temperature operation, prohibit direct frost and ice accumulation on module surface.
