GE IS200TDBSH2ACC TDBS TMR‑capable Discrete‑Input Relay‑Output Terminal Board

Description

Hardware & Electrical Specifications

• Model：IS200TDBSH2ACC
• Part Number：IS200TDBSH2ACC
• Module Type：TDBS TMR‑capable Discrete‑Input Relay‑Output Terminal Board
• Mounting：DIN‑rail or cabinet panel mounting inside turbine control cabinet
• Power supply：+24 V DC auxiliary power supplied by PADC I/O pack
• Input channels：24 group‑isolated discrete‑input channels; support dry‑contact / 24‑125 VDC wet‑contact mode
• Output channels：12‑channel Form‑C SPDT relay outputs
• Relay contact rating：5 A @250 VAC / 30 VDC resistive load
• Isolation：Group‑based galvanic isolation, isolation rating 1500 V DC
• Response time：Input ≤1 ms; relay output ≤10 ms
• Interface：Barrier‑type screw terminal blocks for field wiring; multi‑channel high‑density IDC ribbon‑cable connectors for PADC I/O pack interconnection
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, transient absorption circuit for each signal loop
• Compatibility note：Cannot run standalone; must match PADC I/O pack; TMR system requires three identical TDBS boards; full‑channel input‑output 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 1.20 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 and actuator wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Screw‑terminal field termination for field discrete signals: breaker auxiliary contacts, valve limit switches, pump‑fan running feedback, safety interlock contact signals; relay output for solenoid valves, auxiliary equipment control and partial trip logic drive.
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 multi‑ribbon‑cable interface for turbine sequence and protection voting‑logic processing; receive logic commands from I/O pack and drive on‑board relay outputs.
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 mounting bracket firmly; ensure multi‑group IDC ribbon‑cable connectors fully locked without loose contact.
3. Field 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 input‑channel open‑close response and each relay‑output action, validate protection‑interlock logic before commissioning.
6. Replacement note: For TMR triple‑redundant safety‑loop application, three‑set TDBS hardware consistency must be verified; full safety‑signal input‑output simulation test is mandatory after swap.