GE IS200TBCIS2CCD TBCI Group‑Isolated Contact‑Input Terminal Board,

Description

Hardware & Electrical Specifications

• Model：IS200TBCIS2CCD
• Part Number：IS200TBCIS2CCD
• Module Type：TBCI Group‑Isolated Contact‑Input Terminal Board
• Mounting：DIN‑rail installation inside turbine control cabinet
• Power supply：+24 V DC auxiliary power supplied by PADC I/O pack
• Input channels：24 discrete contact input channels; dry‑contact / 24‑125 VDC wet‑contact configurable
• Isolation：Group‑based galvanic isolation, isolation rating 1500 V DC
• Response time：Typical ≤1 ms for safety interlock signals
• Interface：Barrier screw terminal blocks for field wiring; three IDC ribbon‑cable connectors for PADC I/O pack
• PCB treatment：S‑style conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, transient absorption circuit for contact loops
• Compatibility note：Cannot run standalone; must match PADC discrete I/O pack; TMR system requires three identical boards; full‑channel contact‑input simulation test mandatory after replacement.

Environmental Specifications

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

Mechanical Data

• Weight：approx 1.25 kg
• Dimension：330 mm × 178 mm × 48 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‑contact wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Screw‑terminal field termination for turbine discrete contact signals: breaker auxiliary status, valve limit position, auxiliary equipment running feedback, safety interlock contact signals.
2. Group galvanic isolation between plant field wiring and control logic side, suppress ground‑loop noise and industrial surge interference.
3. Convert contact open‑close status into digital logic signals, transmit to PADC I/O pack through triple ribbon‑cable interface for turbine sequence and protection voting‑logic processing.
4. Built‑in surge and transient suppression for long‑distance field wiring under high‑EMI turbine‑hall environment.
5. On‑board channel fault diagnosis: detect field‑loop open‑circuit fault, report fault status to 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‑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 DIN‑rail mounting bracket firmly; ensure three IDC ribbon‑cable connectors fully locked without loose contact.
3. Field contact‑signal wiring strictly follow GE Speedtronic wiring manual; safety‑related discrete 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, test each channel open‑close response, validate protection‑interlock logic before commissioning.
6. Replacement note: For TMR triple‑redundant safety‑loop application, three‑set TBCI hardware consistency must be verified; full safety‑signal simulation test is mandatory after swap.