Schneider TSXDMY28RFK Mixed IO Module

This TSXDMY28RFK mixed I/O module combines discrete inputs and relay outputs in one unit. It provides complete signal interface for TSX Premium PLC systems efficiently. You can deploy this module for space-saving control in medium-scale automation applications.

Technical Specifications

Parameter	Value
Model	Schneider TSXDMY28RFK
Category	Discrete Mixed IO Module
Number of Inputs	16 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	12 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)	20 million operations
Relay Life (Electrical)	150,000 operations at rated load
Isolation	1500 VAC (field to logic)
Internal Power Draw	250 mA from +5 VDC backplane
Dimensions (W x H x D)	5.5 cm × 13.5 cm × 13.2 cm
Weight	0.58 kg (1.28 lbs)
Connector Type	Two 20-pin removable terminal blocks
Component Count	1 main board + 16 optoisolators + 12 relays + 28 LEDs
Energy Storage	220 µF hold-up capacitor

Input Section Design

The Schneider TSXDMY28RFK provides sixteen 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

Twelve 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 variable frequency drives and motors.

Installation and Connectivity

Mount this module in any I/O slot of a TSX Premium rack. Two 20-pin removable terminal blocks simplify field wiring connections significantly. The unit draws 250 mA from the +5 VDC backplane supply. For best results, use separate conduits for input and output wiring.

Visual Status Indication

Twenty-eight LEDs provide immediate feedback for every I/O channel. Green LEDs display the ON/OFF states of all sixteen 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 20 million mechanical operations under no-load conditions. Under rated load, each relay lasts for 150,000 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 significantly.

Why Choose This Mixed Module

This 16-in/12-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 complex machines, packaging lines, and material handling systems perfectly.