Schneider DEP 112 Input Module – 8-Channel Digital Input

The Schneider DEP 112 captures discrete signals from field sensors and switches. This input module connects push buttons, limit switches, and proximity sensors. You can install it within a Telemecanique Logistat or similar rack system. The unit provides electrical isolation between field wiring and the backplane.

Input Specifications and Ratings

The Schneider DEP 112 accepts standard 24 VDC digital signals from field devices. This input module draws only 8 mA per active channel. You can connect sensors with mechanical contacts or solid-state outputs. The unit ignores voltage below 5 VDC as a valid off signal.

Physical Dimensions and Weight

This input module weighs 0.25 kg for stable rack installation. The unit occupies a single slot in a Logistat chassis. Its width reaches only 30 mm for high-density configurations. You can insert the Schneider DEP 112 alongside output or positioning modules.

Interface and Wiring Connections

A 20-pin female backplane connector handles power and data transfer. The front panel includes 8 screw terminals for field wiring. These terminals accept wire sizes from 0.2 to 1.5 mm². You will find one common return terminal shared across all eight channels. Each channel features a green LED indicator for visual status confirmation.

Energy Storage and Internal Circuitry

The Schneider DEP 112 stores minimal electrical energy for input filtering. Each channel includes a 10 µF capacitor for contact debouncing. These eight capacitors provide a total storage of 80 µF at 24 VDC. The module does not contain any battery or non-volatile memory. Eight optocouplers provide complete isolation between field and logic circuits.

Component Layout and Construction

Sixteen resistors set the correct current for each input channel. Eight zener diodes protect against overvoltage events up to 35 VDC. The circuit board uses a single-layer FR4 substrate for cost-effective production. You will find 94 individual components soldered on both sides. The Schneider DEP 112 includes no user-serviceable fuses or relays.

Operational Use and System Integration

Transitioning to this module expands your digital input capacity efficiently. You can monitor eight field devices using only one rack slot. The module works with 2-wire or 3-wire DC sensors without external power. Use the Schneider DEP 112 for emergency stops, guard monitoring, or part detection. For best results, avoid running input wires alongside high-power AC cables.