ABB IS200SPIDG1ABA SPID Speed‑Input DSP Interface Board

Description

Hardware & Electrical Specifications

• Model：IS200SPIDG1ABA
• Part Number：IS200SPIDG1ABA
• Module Type：SPID Speed‑Input DSP Interface Board
• Form factor：Single‑slot double‑height 6U VME plug‑in board
• Power supply：+5 V / ±15 V DC supplied by rack backplane, typical power consumption 10 W
• Speed input：Multi‑channel MPU magnetic‑pickup pulse input, max input frequency 50 kHz
• DSP processing：On‑board high‑speed digital signal processor for speed‑value calculation, overspeed & zero‑speed logic
• Backplane interface：Dual 96‑pin P1/P2 VME back‑plane connectors
• Front‑panel connectors：BNC / screw terminals for MPU sensor wiring; test diagnostic port
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：Over‑voltage surge suppression, ESD protection, hardware overspeed interlock circuit independent of software
• Compatibility note：Cannot run standalone; must match Mark VI / Mark VIe system firmware revision; TMR system requires three‑board consistency verification; overspeed simulation test mandatory after replacement.

Environmental Specifications

• Operating temperature：‑40 ℃ ~ +70 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Turbine control cabinet VME rack
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 0.9 kgABB-DCS He…
• Dimension：340 mm × 216 mm × 30 mm
• Handling note：ESD‑sensitive PCB; high‑speed pulse measuring circuit, anti‑static wrist‑strap mandatory during handling
• Recommended wire cross‑section：0.75‑2.5 mm² shielded twisted‑pair copper cable for MPU speed‑sensor wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Receive pulse signals from turbine‑shaft magnetic pickup sensors, condition high‑frequency pulse input signals.
2. On‑board DSP computes real‑time shaft rotating‑speed value for turbine governor control loop.
3. Hardware overspeed detection, zero‑speed detection; output trip‑request signal for turbine protection logic.
4. Exchange speed‑measurement data, fault diagnostic messages with main controller via VME back‑plane bus.
5. TMR triple‑redundant mode supports three‑way voting logic to avoid single‑board fault causing false trip.
6. On‑board self‑diagnosis: detect MPU sensor open‑circuit / short‑circuit, board power failure, VME‑bus communication abnormality, report fault alarm.
7. Front‑panel LED status indication:
   • Green LED：Module power‑on normal
   • Yellow LED：Pulse‑signal input & VME‑bus communication active
   • Red LED：Overspeed condition / MPU loop fault / board hardware fault

Installation & Wiring Requirements

1. Cut off rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert module fully into designated VME rack slot, lock ejector levers to ensure reliable back‑plane connector contact.
3. MPU speed‑sensor wiring strictly follow GE Speedtronic wiring manual; speed pulse cables must be shielded twisted‑pair, strictly separated from high‑power cables; connect shielding to dedicated ground terminal.
4. Complete protective grounding according to GE Speedtronic system specification.
5. After replacement: verify raw pulse input signal, check real‑time speed reading, perform overspeed‑condition simulation test before commissioning.
6. Replacement note: TMR redundant system must verify three‑group speed channel consistency; overspeed protection function test is mandatory after swap.