IC660BBA026 (4) IC660BBA026 (2) IC660BBA026 (1) IC660BBA026 (3)

The GE IC660BBA026 is a rugged current-source analog input block designed for integration in Genius I/O industrial automation networks. Built to interface directly with 4–20 mA current loop field devices, this module provides six independently isolated analog inputs with industry-grade resolution and accuracy. Featuring a rackless Genius Bus communication interface, it can operate as a standalone remote I/O block, making it a flexible solution for distributed control, process monitoring, and analog signal acquisition tasks in manufacturing and process industries.

Technical Specifications

Parameter	Description
Module Type	Current-Source Analog Input Block
Model	IC660BBA026
Input Channels	6 isolated analog inputs
Input Type	4–20 mA current loop
Input Resolution	1 µA (microamp)
Input Accuracy	±0.1 % of full scale (at 25 °C)
Input Range	4–20 mA (0–25 mA overrange)
Input Conversion Time	Selectable: 16.6 ms – 400 ms
Isolation	1500 V block-to-block & group-to-group
Supply Voltage	18–56 VDC (24/48 V nominal)
Heat Dissipation	~12 W max
Status Indicators	“Unit OK”, “I/O Enabled” LEDs
Communication Protocol	Genius Bus
Mounting	Panel/terminal mount (rackless design)
Approx. Dimensions (H × W × D)	~22.44 × 8.89 × 10.00 cm (8.83″×3.34″×3.91″)
Approx. Weight	~1.8 kg (4 lbs)

This module supports flexible installation orientations and can be integrated into multi-drop networks with appropriate termination and spacing for reliable Genius communication.

Recommended Related Models

Model	Description
IC660BBA020	Voltage/current analog I/O block (4 inputs + 2 outputs)
IC660BBA021	RTD temperature input block
IC660BBA023	Thermocouple temperature input block
IC660BBA025	Current-source analog output block

Popular GE Genius I/O Components

Category	Representative Models
Genius Controllers	IC660CPU001, IC660CPU002
Analog Blocks	IC660BBA020, IC660BBA023
Discrete Blocks	IC660BBD010, IC660BBD020
Bus Drivers	IC660EBD024

Applications

The IC660BBA026 is engineered for systems that require precise analog current measurement and distribution without a large chassis or backplane, including:

Process automation temperature/pressure/flow feedback loops
Factory and production line analog data capture
Distributed control networks with remote I/O expansion
Control panel integration with 4–20 mA loop instruments

Its rackless design enables flexible mounting within control cabinets and supports direct connection to PLC systems via Genius Bus protocol.

Advantages

High-resolution current loop acquisition with 1 µA granularity
Six fully isolated inputs minimize interference and enhance safety
Configurable conversion timing balances responsiveness and noise filtering
Built-in diagnostics including underrange/overrange, alarms, and open-wire detection
Rackless Genius Bus interface allows standalone remote I/O operation
Rugged industrial design with robust isolation and thermal stability

Technical FAQs

What type of signals does the IC660BBA026 handle?
It supports six 4–20 mA current loop analog inputs for industrial sensors and transmitters.
Does it require a separate backplane or chassis?
No — its rackless Genius Bus design allows standalone remote I/O deployment.
What communication protocol does it use?
It communicates using the Genius Bus protocol, compatible with GE/Emerson Genius I/O systems.
Is electrical isolation provided between channels?
Yes — inputs are individually isolated with up to 1500 V block-to-block isolation.
What accuracy and resolution does it offer?
Accuracy is ±0.1 % of full scale with 1 µA resolution for fine analog measurement.
Can alarm thresholds be configured?
Yes — upper/lower alarm limits and diagnostics settings can be configured via handheld monitor or software.
Does it require calibration before use?
No — calibration is not required for normal operation.
What is the selectable input conversion time range?
Conversion time can be set between 16.6 ms and 400 ms to adjust noise filtering and responsiveness.
What supply voltages are supported?
The block operates from 18–56 VDC (nominal 24/48 VDC).
How should this module be spaced in a multi-block network?
When using multiple modules in Genius Bus multi-drop networks, maintain appropriate spacing (e.g., ~2 in) and apply terminating resistors at the network ends.