GE IS200EROCH1ABB Exciter‑Regulator Options Card (EROC)

Description

Hardware & Electrical Specifications

• Model：IS200EROCH1ABB
• Part Number：IS200EROCH1ABB
• Module Type：Exciter‑Regulator Options Card (EROC)
• Form factor：Single‑slot plug‑in board for ERBP / ERRB rack
• Power supply：+5 V / 70 V auxiliary power from exciter backplane
• Serial interface：RS‑232C keypad port on front‑panel; baud‑rate range 1200‑38400 bps
• Tool port：9‑pin RS‑232 diagnostic connector for laptop commissioning
• Signal input：Ground‑detector alarm, detector fault, diode‑fault monitoring input terminals
• Backplane interface：Dual‑connector ISBus internal communication bus
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, surge suppression, isolated power circuit for serial channel
• Compatibility note：Cannot run standalone; dedicated for EX2100 excitation system; for redundant architecture, keypad must connect to M1‑side EROC; full‑function test required after replacement。

Environmental Specifications

• Operating temperature：‑30 ℃ ~ +65 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Excitation control cabinet ERBP / ERRB rack
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 0.35 kg
• Dimension：228 mm × 152 mm × 38 mm
• Handling note：ESD‑sensitive PCB, anti‑static wrist‑strap mandatory during handling
• Recommended wire cross‑section：0.75‑2.5 mm² copper cable for keypad and ground‑detector signal wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. RS‑232 communication interface for local operator keypad, transmit keypad commands and return display data to DSPX controller。
2. Signal conditioning for GE‑EGDM or third‑party field‑ground‑detector alarm, fault and diode‑monitor signals.
3. Supply auxiliary 70 V DC power for external field‑side terminal assemblies.
4. Front‑panel 9‑pin tool port for laptop‑based on‑site commissioning, parameter setting and fault troubleshooting.
5. ISBus backplane duplex data exchange with DSPX, ERIO and other functional boards.
6. On‑board self‑diagnosis: detect module power failure, serial‑port fault, input‑signal abnormality, report fault status to main controller.
7. Front‑panel LED status indication:
   • Green LED：Module power‑on normal
   • Yellow LED：ISBus / serial‑port communication active
   • Red LED：External detector fault / board hardware fault

Installation & Wiring Requirements

1. Cut off excitation rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert module fully into designated ERBP / ERRB rack slot, ensure reliable back‑plane connector contact.
3. For redundant system: keypad cable must connect to M1(ERBP) side EROC according to GE EX2100 manual; do not connect keypad to M2‑side board。
4. Keypad, ground‑detector signal wiring strictly follow GE EX2100 wiring drawing; separate weak‑signal cables from high‑power cables.
5. Complete protective grounding according to GE Speedtronic system specification.
6. After replacement: verify keypad operation response, tool‑port communication, ground‑detector signal acquisition before commissioning.
7. Replacement note: Confirm rack slot matches simplex / redundant architecture; full‑function test is mandatory after swap.