IS200ECTBG2A General Electric Exciter Contact Board EX2100 Series

IS200ECTBG2A Exciter Contact Terminal Board – Relay Control for EX2100 Simplex Systems

Key Technical Specifications

• Model: IS200ECTBG2A — GE part number for the ECTB G2 version.
• Customer power: 125 V dc nominal for general-purpose relay contacts.
• Relay control voltage: 24 V dc from M1 controller powers relay drivers.
• Wetting voltage: 70 V dc isolated for contact inputs from plugs J13M1 and J13M2.
• Dimensions & weight: 150 x 76 x 90 mm; 0.34 kg (3 lbs 4 oz).
• Country of origin: United States — manufactured by GE Industrial Systems.
• Manual reference: GEI-100457A and GEH-6632 for detailed instructions.

Relay Output Configuration

• Two trip relay outputs (K1M1 and K2M1) driven by EMIO board for customer lockout functions.
• Trip relays use two parallel normally closed contacts for each lockout driver.
• Four general-purpose Form-C relay outputs (K1GP through K4GP) with NO/NC/Common terminals.
• General-purpose relays accept customer 125 V dc power wired to terminal blocks.
• All relay drivers receive 24 V dc power from the M1 controller in simplex configuration.

Contact Input Monitoring

• Six auxiliary contact inputs from customer devices powered and monitored with 70 V dc wetting.
• 52G generator breaker contact input monitored with red LED status indication.
• 86G lockout relay contact input monitored with same 70 V dc excitation.
• Wetting voltage range: 63–84 V dc with resistor isolation from J13M1 and J13M2.
• Input status fans out to M1 controller only (simplex) or to M1/M2/C controllers (redundant).
• Red LEDs provide immediate visual indication of each contact input state.

Board Connectivity and Interfaces

• Terminal blocks TB1 and TB2 hold customer field wiring for relays and contacts.
• Three 25-pin sub-D connectors: J405, J408, J415 connect to EBKP backplane for EMIO communication.
• Plugs J13M1 and J13M2 bring 70 V dc wetting power from M1 and M2 power supplies.
• Removable terminal blocks secured with two screws for easy maintenance.
• Board managed by EMIO which collects I/O and sends logic signals to ESEL board via backplane.

Frequently Asked Questions

• What is the function of the IS200ECTBG2A? It provides contact input monitoring and relay output control for EX2100 excitation systems in simplex mode.
• What is the difference between ECTBG2A and ECTBG1? ECTBG2A operates in simplex mode only while ECTBG1 supports redundant control with 2-out-of-3 voting.
• What voltage powers the customer relays? General-purpose Form-C relay contacts accept customer-supplied 125 V dc nominal.
• Is the IS200ECTBG2A a new original part? Yes we supply brand new original sealed units manufactured in USA.
• What are the shipping options and delivery time? We ship via FedEx UPS or DHL within 5 days of order with express courier taking 2–5 business days.
• Can I return the board if unused? Yes we support 30-day returns for unopened items in original packaging.

Contact Information
Inquiries: sales@nex-auto.com | WhatsApp: +86 153 9242 9628

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