Schneider Electric designed the TM2DRA8RT as a reliable expansion module for the Modicon M221 control system. This unit provides eight discrete relay outputs for managing various field devices. It integrates seamlessly with TM2 series I/O architectures to support flexible machine automation.
Key Technical Specifications
The TM2DRA8RT module features a compact housing with precise physical dimensions. It measures 90 millimeters in height and 23.6 millimeters in width. This unit weighs approximately 70 grams for easy DIN rail mounting.
| Specification | Detail |
|---|---|
| Output Type | 8 relay outputs, normally open |
| Contact Rating | 2 A per channel at 250 VAC or 30 VDC |
| Interface | Removable screw terminal block for wiring |
| Energy Storage | No internal battery; state retention via backplane |
| Component Count | Single PCB design with optocoupler isolation |
| Dimensions | 90 x 23.6 x 70 mm (H x W x D) |
Transitioning to connectivity, this module uses a simple bus connection to the controller. You clip it directly onto the DIN rail beside the main CPU. Consequently, the setup requires no additional cabling for power distribution.
Design and Application Focus
Engineers choose the TM2DRA8RT for its straightforward relay switching capabilities. The design supports both AC and DC loads, making it versatile for mixed environments. Furthermore, each channel includes individual LED indicators for real-time status monitoring. This feature simplifies troubleshooting during commissioning or maintenance.
Unlike solid-state output modules, this relay-based unit offers galvanic isolation per channel. You can connect inductive loads like contactors or small motors without external suppression. Additionally, the removable terminal block allows for quick wiring replacements without dismounting the module.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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