Horner HE693ADC409A 4-Channel Millivolt Level High Precision Analog Input Module

Product Description

HE693ADC409A is a high-resolution miniature voltage analog input module developed by Horner Electric, fully hardware and firmware compatible with GE Fanuc Series 90-30 PLC 

backplane bus system.

It is specially designed for weak millivolt small signal collection, perfectly matching strain gauge sensors, weighing load cells, pressure transducers and micro-displacement transmitters. 

The module converts tiny millivolt analog variation signals into 16-bit digital values through high-precision ADC chip, transmits digital data to PLC CPU via rack internal backplane bus 

for weight calculation, force monitoring, pressure closed-loop control and equipment stress detection. It adopts channel-to-channel isolation and backplane isolation design, front panel LED 

running/fault status indication, PCB with anti-corrosion conformal coating, standard single-slot plug-in installation for 90-30 base rack. Widely used as maintenance spare parts for 

metallurgical hydraulic presses, packaging weighing equipment, material testing machines, chemical process force measurement and heavy machinery PLC control systems.

Technical Specifications

Model: HE693ADC409A, Brand: Horner Electric, Origin: United States

Compatible Controller: GE Fanuc Series 90-30 PLC system

Number of Input Channels: 4 isolated analog input channels

Input Signal Range: ±25mV, ±50mV, ±100mV software configurable millivolt range

A/D Conversion Resolution: 15 bits plus sign bit (16-bit effective resolution)

Full Scale Accuracy: ±0.05%FS high measuring precision

Input Impedance: Greater than 20MΩ ultra-high input impedance

Maximum Overload Protection: ±35VDC channel overvoltage withstand capacity

Isolation Strength: 1500VAC one-minute isolation between channels and backplane bus

Sampling Speed: 1.28ms per full scan of all 4 channels

Excitation Power Output: 24VDC, max 100mA for strain gauge bridge power supply

Configuration Software: Proficy Machine Edition, Logicmaster GE programming software

Operating Temperature: 0℃ ~ +60℃ continuous full-load operation

Storage Temperature: -40℃ ~ +85℃

Ambient Humidity: 5%–95% non-condensing environment, three-proof coated circuit board

Protection Class: IP20, only installed inside PLC electrical cabinet

Mounting Mode: Direct plug-in on GE 90-30 standard backplane slot

Net Weight: Approx. 0.3kg

Certifications: CE, UL Listed, industrial EMC anti-electromagnetic interference certification

Key Features

Professional millivolt weak signal acquisition design, extremely low drift circuit ensures stable measurement of load cell and strain gauge tiny output signals.

Four completely isolated input channels, effectively eliminate crosstalk interference between different measuring points, improve data anti-jamming capability on site.

All measurement ranges are set by upper computer software without DIP switch adjustment, convenient for on-site debugging and parameter modification.

Complete hardware self-diagnosis function, automatically report channel open circuit, short circuit and module internal fault to PLC for alarm interlock processing.

1:1 pin-to-pin compatible with GE original 90-30 series analog modules, power-off direct one-to-one replacement without rack wiring modification.

Ultra-high input impedance design, no signal attenuation for long-distance sensor wiring, suitable for workshop long cable laying conditions.

Compact single-width modular structure, small rack space occupation, stable long-term 24/7 uninterrupted operation in dusty and high-temperature control cabinets.

Mature application in weighing control, force testing, pressure monitoring and material tension detection industries, reliable spare part for old GE PLC system renovation.