GE IS200SDIIH1ADB SDII Simplex Discrete‑Input Isolation Terminal Board

Description

Hardware & Electrical Specifications

• Model：IS200SDIIH1ADB
• Part Number：IS200SDIIH1ADB, MRP683026
• Module Type：SDII Simplex Discrete‑Input Isolation Terminal Board
• Mounting：DIN‑rail bracket installation inside turbine control cabinet
• Power supply：+24 V DC auxiliary power supplied by I/O pack through ribbon cable
• Input channels：16 optically‑isolated discrete input channels; support dry‑contact and wet‑contact 24‑48 VDC input mode, configurable by on‑board jumpers
• Isolation：Opto‑coupler galvanic isolation, isolation rating 1500 V DC
• Response time：Typical ≤1 ms signal response for discrete interlock logic
• Interface：Screw terminal blocks for field wiring; high‑density IDC ribbon‑cable connector connecting to Mark VIe discrete I/O pack
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, surge suppression, input over‑voltage clamp circuit
• Compatibility note：Cannot run standalone; simplex‑only hardware, not for TMR system; jumper wet‑contact voltage setting must match field device; full‑channel dry/wet‑contact function test required after replacement。

Environmental Specifications

• Operating temperature：‑30 ℃ ~ +65 ℃
• 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 0.50 kg
• Dimension：178 mm ×159 mm ×50 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 termination for field discrete dry‑contact / wet‑contact status signals: valve limit, pump‑fan feedback, breaker status, safety interlock switches.
2. Optical isolation between field plant wiring and internal control logic to suppress industrial ground‑loop noise and surge interference.
3. Convert contact open/close status into digital logic, transmit signal data to I/O pack via ribbon‑cable link for turbine logic‑processing.
4. On‑board channel diagnostic: detect field‑loop open‑circuit fault, report fault status to main controller.
5. On‑board self‑diagnosis: detect terminal‑board power‑loss and ribbon‑cable link failure.
6. LED status indication:
   • Green LED：Terminal‑board auxiliary power normal
   • Yellow LED：Ribbon‑cable communication link 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 IDC ribbon‑cable connector fully locked without loose contact.
3. Restore on‑board jumper configuration (dry‑contact / wet‑contact voltage mode) strictly consistent with original settings before field wiring.
4. Field contact‑signal wiring strictly follow GE Mark VIe wiring manual; discrete signal cables use shielded twisted‑pair, separate from high‑power cables; connect shielding to dedicated ground terminal.
5. Complete protective grounding according to GE Speedtronic system specification.
6. After replacement: verify ribbon‑cable link status, test each channel open‑close state response, validate interlock‑signal logic before commissioning.
7. Replacement note: This hardware is simplex‑only, cannot apply for TMR triple‑redundant protection loop; full‑channel discrete‑input function test mandatory after swap。