Schneider ASBDAP253C Mixed I/O Module

This mixed module combines discrete inputs and relay outputs in a single unit. It provides complete I/O functionality for TSX Compact PLC systems efficiently. You can deploy this module for space-saving control in small automation applications.

Technical Specifications

Parameter	Value
Model	Schneider ASBDAP253C
Category	Mixed Discrete Input/Output Module
Number of Inputs	12 points
Input Voltage Range	10–30 VDC
Input Current per Point	7 mA typical at 24 VDC
Input Impedance	3.9 kΩ per channel
Input Response Time	1 ms typical
Number of Outputs	8 points
Output Type	Relay (Form A, normally open)
Output Contact Rating	2 Amps at 24 VDC or 250 VAC
Output Response Time	10 ms typical (ON and OFF)
Relay Life (Mechanical)	10 million operations
Relay Life (Electrical)	100,000 operations at rated load
Isolation	1500 VAC (field to logic)
Internal Power Draw	200 mA from +5 VDC backplane
Dimensions (W x H x D)	4.2 cm × 12.0 cm × 10.5 cm
Weight	0.42 kg (0.93 lbs)
Connector Type	One 20-pin removable terminal block
Component Count	1 main board + 12 optoisolators + 8 relays + 20 LEDs
Energy Storage	100 µF hold-up capacitor

Input Section Design

The Schneider ASBDAP253C provides twelve DC inputs for sensor and switch connections. Each channel accepts signals from 10 to 30 VDC without any damage. A 7 mA current draw ensures compatibility with most industrial sensors. Green LEDs illuminate individually when an input detects an active signal.

Output Section Features

Eight relay outputs drive solenoids, contactors, or indicator lamps directly. Each relay provides a Form A contact rated at 2 Amps continuous. You can switch either AC or DC loads up to 250 VAC or 24 VDC. Red LEDs show the real-time status of each output channel.

Signal Isolation and Noise Immunity

Optical isolators separate every input point from the internal logic bus. Reed relays provide additional isolation between outputs and control circuits. This 1500 VAC rating prevents ground loops and electrical noise interference. Consequently, the module performs reliably near motors and drives.

Installation and Connectivity

Mount this module in any I/O slot of a TSX Compact rack. The 20-pin removable terminal block accepts wires from 16 to 22 AWG. The unit draws 200 mA from the +5 VDC backplane supply. For best results, use separate conduits for input and output wiring.

Visual Status Indication

Twenty LEDs provide immediate feedback for every I/O channel. Green LEDs display the ON/OFF states of all twelve inputs. Red LEDs illuminate when their corresponding relay outputs energize. Therefore, technicians can troubleshoot machine faults without any test equipment.

Relay Life and Durability

The relays provide 10 million mechanical operations under no-load conditions. Under rated load, each relay lasts for 100,000 operations minimum. You can replace individual relays if they wear out over time. For best results, install snubber diodes on inductive DC loads to extend contact life.

Why Choose This Mixed Module

This 12-in/8-out configuration saves significant space in crowded control cabinets. It replaces up to three separate I/O modules with one compact unit. Therefore, this module suits small conveyors, packaging machines, and assembly fixtures perfectly.