GE IC660BBA104-1 GE IC660BBA104-3 GE IC660BBA104-4 GE IC660BBA104-2

The GE IC660BBA104 is a rugged current-source analog input/output block within the GE Fanuc Genius I/O family, designed for distributed control and process automation environments. It combines four high-resolution 4–20 mA analog inputs with two precision 4–20 mA analog outputs, delivering reliable current-loop interfacing with built-in diagnostics and strong electrical isolation. Powered from either 115 VAC or 125 VDC, this module supports legacy and modern industrial installations that require accurate signal acquisition and control without external power converters.

Technical Specifications

Parameter	Description
Module Type	Current-Source Analog I/O Block
Model	IC660BBA104
Analog Inputs	4 × 4–20 mA current inputs
Input Resolution	~1 µA
Input Accuracy	±0.1 % full scale
Analog Outputs	2 × 4–20 mA current outputs
Output Resolution	~6 µA
Output Accuracy	±0.15 % full scale
Input Conversion Time	16.6 ms – 400 ms (user-selectable)
Output Update Time	~6–8 ms
Power Supply	115 VAC / 125 VDC nominal
Voltage Range	93–132 VAC / 105–145 VDC
Isolation	1500 V block-to-block, group-to-group, channel-to-channel
Status Indicators	“Unit OK”, “I/O Enabled” LEDs
Heat Dissipation	~12 W maximum
Dimensions (H × W × D)	224 × 90 × 112 mm (approx.; converted from ~8.83″ × 3.56″ × 4.42″)
Weight	~1.8 kg (4 lbs)
Mounting	Panel / terminal base suitable for Genius I/O
Communication	Genius Bus protocol compatible

Note: Dimensions are approximated in millimeters from known inch measurements to match typical industrial specification formats.

Recommended Related Modules

Model	Description
IC660BBA020	Analog I/O block (voltage/current)
IC660BBA021	RTD temperature input block
IC660BBA023	Thermocouple input block
IC660BBA025	Current-source analog output block

Popular GE Genius I/O Components

Category	Representative Models
Genius Controllers	IC660CPU001, IC660CPU002
Analog Blocks	IC660BBA100, IC660BBA023
Digital I/O Blocks	IC660BBD010, IC660BBD020
Bus Drivers	IC660EBD024

Applications

The IC660BBA104 is well suited for industrial automation systems requiring robust current-loop analog interfacing, including:

Process control feedback (flow, level, pressure sensors)
Factory automation with 4–20 mA transmitters and actuators
Distributed remote I/O in manufacturing lines
HVAC and building automation systems
Retrofitting legacy PLC installations with current loop needs

Its strong isolation and configurable conversion timing allow it to operate reliably in electrically noisy industrial environments.

Advantages

Integrated current-loop I/O: Combines 4 inputs and 2 outputs in a single block for compact control panels.
High precision: Input accuracy ±0.1 % and output accuracy ±0.15 % ensure tight control.
Adjustable conversion timing: Selectable input conversion time balances noise filtering and responsiveness.
Extensive diagnostics: Detects overrange, underrange, high/low alarms, open wire, and output feedback errors.
Strong electrical isolation: 1500 V isolation enhances noise immunity and safety.
Dual power options: Supports 115 VAC or 125 VDC, ideal for systems with mixed power sources.

Technical FAQs

What signals can the IC660BBA104 handle?
It supports industrial 4–20 mA current loops on both inputs and outputs.
How many channels are provided?
There are four current inputs and two current outputs.
Does it require external power?
No — it is powered directly by a single 115 VAC or 125 VDC source.
What isolation protections are built in?
The block provides 1500 V isolation block-to-block, group-to-group, and channel-to-channel.
Can the conversion time be adjusted?
Yes — input conversion time is user-selectable from 16.6 ms to 400 ms.
What are typical update rates?
Outputs typically update in about 6–8 ms.
Are diagnostics available?
Yes — diagnostics include open-wire detection, over/underrange alarms, and output feedback error detection.
Is it compatible with legacy systems?
Yes — it integrates with Genius Bus Controllers, PCIM, and QBIM modules.
What environments is the module suited for?
It’s designed for typical industrial ambient conditions with strong electrical noise immunity.
Where is it typically mounted?
Mount it in a control cabinet with adequate ventilation and protective enclosure.