Product Name: Modular Redundancy Sinking Output Block
Brand Name: GE
Model Number:IC660BRD025
Country of Origin:USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
General Electric |
Model Number: |
IC660BRD025 |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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The IC660BRD025 is a 32‑point discrete sinking output block from GE Fanuc‘s Genius I/O series, purpose‑built for the Genius Modular Redundancy (GMR) output subsystem. The IC660BRD025 controls critical discrete output loads in triple‑redundant PLC configurations by performing hardware‑level 2‑out‑of‑3 output voting without relying on software. Each of the 32 isolated output circuits integrates blocking diodes and feedback resistors, preventing back‑drive malfunctions and enabling circuit health monitoring. The IC660BRD025 is configured using a Genius handheld monitor and is typically deployed in H‑Block redundant groups alongside source output blocks for high‑integrity field load control.
Emergency Shutdown (ESD) systems requiring IEC 61508 SIL‑2 or SIL‑3 certified output control
Triple Modular Redundant (TMR) PLC architectures in oil & gas, petrochemical, power generation, and nuclear facilities
GMR systems controlling discrete output loads such as solenoid valves, motor contactors, pilot relays, and annunciators
H‑Block output group configurations for fail‑safe load control in redundant I/O subsystems
Field load control in GE Fanuc Series 90‑70 GMR systems
High‑availability process automation requiring built‑in output diagnostics and redundancy
32 sinking DC outputs: Each output is individually isolated, supporting 5V, 12V, or 24V DC field loads.
Built‑in output protection: Each output circuit includes integrated blocking diodes (eliminate back‑drive current in parallel configurations) and feedback resistors (enable output health monitoring).
GMR output voting at hardware level: Compares output data from up to three PLCs and sets each output to the state commanded by at least two controllers — no software voting required.
H‑Block redundant group ready: Designed for H‑Block configurations (two sinking + two source output blocks wired in parallel per load).
High inrush current capability: 4.0 A per output accommodates capacitive loads, lamps, and solenoid valves.
Ultra‑low off‑state leakage: ≤ 20 μA leakage current when output is OFF, suitable for sensitive semiconductor inputs.
Genius I/O bus communication: Connects via rugged twinax cable, supporting data rates up to 153.6 Kbaud.
Rugged industrial design: IP65 protection, –20°C to +60°C operating temperature range.
Provides high‑integrity discrete output control in redundant GMR systems by voting output data from the PLCs and energizing field loads when at least two PLCs agree.
Outputs stay in safe state (de‑energized) if less than two PLCs provide matching data — automatic fail‑safe behavior.
When all three PLCs are online and outputs match, load is set to commanded state. If one PLC offline, remaining two online PLCs determine the voted output.
Built‑in blocking diodes permit parallel connection of multiple output blocks to the same load without back‑drive current causing false energization.
Feedback resistors provide continuous output circuit health status to the PLC for diagnostics and maintenance.
When GMR system transitions to simplex shutdown (only one PLC remaining), outputs go to configured default or last‑state condition based on system configuration.
Q1: What is the IC660BRD025 used for?
A1: The IC660BRD025 is a 32‑point sinking output block for GE Fanuc Genius Modular Redundancy (GMR) systems, controlling discrete loads such as solenoids and contactors in triple‑redundant PLC architectures.
Q2: How does the IC660BRD025 perform output voting?
A2: The IC660BRD025 performs hardware‑based 2‑out‑of‑3 voting. It compares output data from up to three PLCs per point and sets the output only when at least two controllers agree — no software voting needed.
Q3: What voltage and current ratings does the IC660BRD025 support?
A3: It operates from 5 to 48 VDC (covering 5V, 12V, and 24V nominal systems) with a continuous current range of 0.5 to 1.0 A per output and a maximum inrush rating of 4.0 A.
Q4: How does the IC660BRD025 protect outputs in parallel configurations?
A4: Each of the 32 outputs includes a built‑in blocking diode that prevents back‑drive current when multiple output blocks are wired in parallel to the same load, eliminating the risk of false energization.
Q5: Is the IC660BRD025 compatible with H‑Block redundant groups?
A5: Yes, the IC660BRD025 is specifically designed for H‑Block redundant output groups, where two sinking blocks (including this model) and two source blocks are wired in parallel to each load for true output redundancy.
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