Description
METSO 02VA0082
Technical Specifications: DIN‑rail mounting structure; rated working voltage 24 VDC; wiring terminal supports wire cross‑section 0.5 mm²‑1.5 mm²; built‑in surge suppression device; operating temperature range ‑20 ℃ to +70 ℃; protection class IP20; match with multiple series Metso I/O modules.
Functional Features: Centralized wiring for field input‑output signals; built‑in surge protection absorbs transient over‑voltage induced by long‑distance cables; short‑circuit protection for signal loop; printed terminal mark on shell for rapid identification; mechanical locking mechanism for upper‑inserted I/O module; independent dedicated shielding grounding terminals.
Application Scenarios: DCS control cabinet of pulp and paper plant; thermal power plant auxiliary signal wiring cabinet; chemical process interlock cabinet; mineral processing automation cabinet; water‑treatment plant signal wiring cabinet.
Performance Parameters: Stable terminal contact resistance; low temperature rise under long‑term continuous load; fast response of surge‑suppression components; comply with industrial EMC standards; adapt to 7×24 hours continuous operation.
Material Composition: Flame‑retardant high‑temperature resistant engineering plastic shell; copper alloy gold‑plated wiring terminals; fiberglass epoxy insulating substrate; metal DIN‑rail fixing fasteners.
Structural Features: Long‑strip shape designed for standard DIN‑rail installation; shell is divided into signal terminal area and independent grounding terminal area; upper card slot is used for vertical insertion of matched I/O module; internal dip‑switch position reserved; terminal definition engraved on shell surface.
Working Principle: Field sensor and actuator cables connect to terminals of 02VA0082 terminal base. Signals transmit upward to I/O module inserted on top through internal circuit. Built‑in surge‑protection components absorb transient high‑voltage interference brought by field cables. Signal cable shielding wire connects to dedicated grounding terminal of terminal base to suppress electromagnetic interference.
Installation Requirements: Fasten terminal base firmly on DIN‑rail inside control cabinet without offset or loosening. Adopt shielded twisted‑pair cables for field signal wiring. Cable shielding layer uses single‑point grounding. Signal cables and high‑power power cables are laid in separate trunking. Connect grounding terminal of terminal base to cabinet protective grounding reliably.
Precautions for Use: Cut off field loop power supply before wiring operation. Strictly follow terminal definition drawing to avoid wrong connection between power line and signal line. Never introduce high‑voltage signal into signal terminals. Inspect wiring terminal tightness periodically. Keep terminal area clean, avoid dust accumulation resulting in insulation performance degradation.
