ABB IS200SPROH1AAB SPRO Secondary Protection Terminal Board

Description

Hardware & Electrical Specifications

• Model：IS200SPROH1AAB
• Part Number：IS200SPROH1AAB, MRP663860
• Module Type：SPRO Secondary‑Protection Terminal Board
• Mounting：DIN‑rail / cabinet panel mounting
• Power supply：+24 V DC auxiliary power supplied by matched I/O pack
• Signal interface：Screw terminal block for field protection wiring; two high‑density ribbon‑cable connectors for I/O pack interconnection
• Isolation：Built‑in isolation transformers, high galvanic isolation for protection signal channels
• Signal type：Backup overspeed trip, vibration trip, low‑oil‑pressure trip, ESD emergency shutdown discrete input signals
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, surge suppression, transient absorption circuit for trip‑signal loops
• Compatibility note：Cannot run standalone; must match Mark VI protection I/O pack; TMR system requires three identical SPRO boards; full protection‑loop 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
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 0.55 kg
• Dimension：178 mm × 159 mm × 30 mm
• Handling note：ESD‑sensitive PCB, anti‑static wrist‑strap mandatory during handling
• Recommended wire cross‑section：0.75‑2.5 mm² shielded twisted‑pair copper cable for field protection‑signal wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Screw‑terminal field termination for turbine secondary backup protection signals: backup overspeed trip, vibration trip, low‑oil‑pressure, emergency shutdown ESD contact signals.
2. On‑board isolation transformers provide galvanic isolation between field‑side plant wiring and control logic side, eliminate ground‑loop interference for critical safety trip signals.
3. Condition protection discrete signals and transmit to matched I/O pack through dual ribbon‑cable interface for turbine protection voting logic processing.
4. Suppress surge and transient noise induced by long‑distance field wiring in high‑EMI power‑plant environment.
5. On‑board channel self‑diagnosis: detect field‑loop open‑circuit, signal‑chain abnormality, report fault status to turbine main controller.
6. On‑board self‑diagnosis: detect terminal‑board auxiliary power loss and ribbon‑cable link failure.
7. LED status indication:
   • Green LED：Terminal‑board auxiliary power normal
   • Yellow LED：Ribbon‑cable link communication active
   • Red LED：Field‑protection‑channel fault / link communication loss alarm

Installation & Wiring Requirements

1. Cut off rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Secure mounting bracket firmly; ensure dual ribbon‑cable connectors fully locked without loose contact.
3. Field protection‑signal wiring strictly follow GE Mark VI wiring manual; safety trip signal cables must adopt 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 ribbon‑cable link status, simulate each protection trip‑signal input, validate turbine trip‑logic response before commissioning.
6. Replacement note: For TMR redundant system, three‑set SPRO channel consistency must be verified; full safety‑protection‑loop simulation test is mandatory after swap.