Schneider ASB873011 Analog Module | 4 Ch 14-Bit 2ms Premium

This module converts analog field signals into digital values for Schneider Modicon Premium PLCs. It accepts voltage or current inputs from sensors and transmitters. Therefore, it enables precise process monitoring in industrial automation systems.

Physical and Power Specifications

The Schneider ASB873011 measures 13.5 cm in length and 10.0 cm in width. Moreover, its module weight equals approximately 0.24 kg for rack mounting. A single 20-pin removable terminal block handles all field wiring connections. Additionally, this module provides four independent analog input channels.

Parameter	Specification
Brand	Schneider Electric
Full Model	ASB873011
Category	Analog Module (Input)
Dimensions (L x W x H)	13.5 cm x 10.0 cm x 6.0 cm (5.31″ x 3.94″ x 2.36″)
Module Weight	0.24 kg (0.53 lbs)
Primary Interface	1 x 20-pin Removable Screw Terminal Block
Analog Input Channels	4 Differential Channels
Input Signal Range (Voltage)	0 to +10 VDC, -10 to +10 VDC, 0 to +5 VDC
Input Signal Range (Current)	0 to 20 mA, 4 to 20 mA (with External Resistor)
Resolution	14 Bits (0 to 16383 Counts)
Conversion Type	Sigma-Delta
Conversion Speed	2 ms per Channel (8 ms for All 4 Channels)
Input Impedance (Voltage)	1 MΩ (Typical)
Input Impedance (Current)	250 Ω (with External Resistor)
Absolute Accuracy	±0.3% of Full Scale at 25°C
Absolute Accuracy Drift	±0.01% per °C
Common Mode Rejection	100 dB (50/60 Hz)
Normal Mode Rejection	80 dB (50/60 Hz)
Common Mode Voltage	±20 VDC Maximum
On-Board Components	1 ADC Chip + 4 Signal Conditioning Circuits + 4 Protection Diodes + 1 EMI Filter + 1 Voltage Reference IC
Energy Storage	3 x 100 µF Electrolytic Capacitors (35V) + 2 x 10 µF Tantalum Capacitors (25V)
Operating Voltage	+5 VDC and +15 VDC from Backplane
Power Consumption	1.0 W (Typical)
Isolation Rating	1500 Vrms (Field to Logic)
Common Mode Range	±10 VDC Maximum
Operating Temperature	0°C to +55°C (32°F to 131°F)
Mounting Type	Premium PLC Rack
Status Indicators	1 Green LED (Power) + 1 Green LED (Active) + 1 Red LED (Fault)

Input Channel Features and Signal Conditioning

The Schneider ASB873011 accepts four differential analog input signals for better noise rejection. For instance, each channel includes a dedicated sigma-delta converter for high-resolution readings. In addition, the input impedance of 1 MΩ minimally loads voltage-type sensors. Moreover, the 14-bit resolution provides 16384 discrete steps for each input range. Consequently, this module delivers precise measurement for critical process variables.

Energy Storage and Signal Integrity

This module stores energy using five onboard capacitors for power filtering. Specifically, three electrolytic capacitors smooth the supply rails for stable ADC operation. In addition, two tantalum capacitors provide high-frequency noise suppression for analog circuits. Furthermore, these capacitors maintain conversion accuracy during brief power interruptions. Therefore, the Schneider ASB873011 rejects electrical noise from factory environments effectively.

High-Resolution and Fast Conversion Features

This analog module converts each channel in just 2 milliseconds. In addition, the sigma-delta architecture ensures excellent linearity and repeatability. Moreover, internal filtering provides 100 dB of common mode rejection at 50/60 Hz. Thus, this module ignores noise from AC power lines and variable frequency drives completely.

Installation and Diagnostic Indicators

You will find three LED indicators on the module’s front panel for diagnostics. First, a green Power LED lights when the backplane supply is present. Second, a green Active LED flashes during normal analog conversion operation. Third, a red Fault LED indicates hardware errors or out-of-range signals. Additionally, the removable terminal block accepts 16-22 AWG shielded wires. Therefore, this module fits seamlessly into any standard Modicon Premium I/O slot.