Schneider TSXDMY28FK Discrete Input Module

The Schneider TSXDMY28FK delivers high-density signal acquisition for TSX Premium PLCs. This module supports 28 discrete input channels at 24 VDC nominal voltage. Each channel draws only 7 mA for low power consumption. You can connect sensors, push buttons, and limit switches directly.

Robust Electrical Specifications

The module provides 500 VAC isolation between input groups. This isolation prevents ground loop interference in noisy industrial environments. Input response time ranges from 1 ms to 8 ms. You can configure this delay through your PLC software. The Schneider TSXDMY28FK consumes a maximum of 3.5 W from the backplane.

Energy Storage and Power Behavior

This module does not contain any internal battery or supercapacitor. It stores only minimal energy for input filter capacitance (less than 0.1 J). Therefore, the device loses all input states immediately upon power loss. This predictable behavior simplifies safety system design.

Mechanical Dimensions and Weight

The unit weighs approximately 0.35 kg (0.77 lbs). Its housing measures 130 mm in height and 85 mm in depth. You can mount the Schneider TSXDMY28FK on a standard DIN rail. The front panel includes 28 LED indicators for individual channel status. These LEDs help you troubleshoot wiring faults without a multimeter.

Connector and Installation Details

Parameter	Specification
Brand	Schneider Electric
Model	TSXDMY28FK
Product Type	Discrete Input Module
Number of Channels	28
Nominal Voltage	24 VDC
Input Current per Channel	7 mA
Isolation Voltage	500 VAC between groups
Response Time	1 to 8 ms (configurable)
Power Dissipation	3.5 W max
Internal Energy Storage	< 0.1 J (filter capacitance only)
Weight	0.35 kg
Dimensions (H x D)	130 mm x 85 mm
Terminal Block	1 removable, 28-pin
Wire Size	0.2 to 1.5 mm²
Operating Temperature	0°C to 60°C

The Schneider TSXDMY28FK includes one removable 28-pin terminal block. This terminal block accepts solid or stranded copper wire. You can pre-wire the block before installing the module. Such a feature reduces system downtime during replacements.

System Compatibility

Use this module with TSX Premium or Micro PLC backplanes. It supports both sink and source wiring configurations. You do not need external resistors or pull-up networks. The Schneider TSXDMY28FK also works with 2-wire proximity sensors. For best results, pair it with a Schneider 24 VDC regulated power supply.