Overview
The KB Electronics KBSI-240D (model 9431C) is a stand-alone signal isolator designed to provide isolated interface between non-isolated signals and KB motor speed controls. This industrial signal isolator is essential for applications requiring galvanic isolation to protect sensitive automation equipment from ground loops and electrical noise. Compatible with process controllers, transducers, microprocessors, and programmable logic controllers (PLCs), the KBSI-240D enables reliable signal conditioning in demanding industrial environments.
Key Features
- Multi-range input compatibility: 0-25VDC, 0-120VDC, and 0-550VDC
- Multi-range current inputs: 1-5mA, 4-20mA, and 10-50mA
- Linear output: 0-10VDC at maximum 10mA
- Selectable power supply: 115VAC or 230VAC, 50/60Hz
- Dual-range trimmer potentiometers for Min and Max calibration
- Compact stand-alone module with flexible signal conditioning
Technical Specifications
- Input Voltage Ranges: 0-25VDC, 0-120VDC, 0-550VDC
- Input Current Ranges: 1-5mA, 4-20mA, 10-50mA
- Output Voltage: 0-10VDC (linear function of input)
- Output Current: Maximum 10mA
- Power Supply: 115VAC or 230VAC, 50/60Hz
- Control Method: Dual-range trimmer potentiometers (Min/Max adjustment)
- Mounting: Stand-alone module
- Weight: 0.45 lbs
Typical Applications
- Motor speed control signal isolation and conditioning
- Transducer signal integration with KB motor controls
- Ground loop elimination in PLC signal chains
- Microprocessor-to-controller signal interface
- Industrial process measurement signal isolation
- Noise filtering for analog control signals
Compatibility & Replacements
Compatible With
- KB Electronics motor speed controls (all models)
- Process controllers and industrial PLCs
- Transducers and sensor inputs
- Microprocessor-based control systems
- Industrial automation signal conditioning systems
Replaces / Drop-In Replacement For
- Model 9431 (earlier revision)
- Model 9431B (earlier revision)
- Other KB signal isolator models requiring 0-10VDC output
Works With
- KB Electronics DC drives and motor controls
- Programmable logic controllers (PLCs) with analog I/O
- Industrial process control systems
- Analog signal conditioning and isolation applications
- Systems requiring galvanic isolation (50/60Hz compatible)
