Description
Product Overview
The Schneider Electric DAP 208 is a specialized relay output module designed for the Modicon 800 Series I/O architecture. This unit provides eight independent electromechanical output channels, functioning as an interposing interface between low-voltage controller logic and higher-voltage field load circuits. By utilizing mechanical relay contacts, the module ensures robust galvanic isolation, protecting sensitive backplane communication buses from field-side inductive surges, electrical noise, and potential short-circuit events common in demanding industrial environments such as power generation and chemical processing.
Features
- Eight independent, normally open (NO) electromechanical relay outputs.
- Single-slot modular design for efficient space utilization within 800 Series backplane frames.
- Galvanic isolation between the backplane bus and field-side load circuits to enhance system integrity.
- Integrated snubber networks on each channel to suppress inductive counter-electromotive force during switching.
- Front-panel LED indicators providing real-time status mapping for each individual output channel.
- Removable screw terminal block assembly for simplified field wiring and maintenance.
Applications
This module is engineered for high-capacity switching requirements in heavy industry, including petroleum refineries, thermal power plants, and mineral processing facilities. It is ideal for driving external contactors, solenoid valves, and indicator lamps where electrical separation between the PLC logic and the field device is required for safety and noise immunity.
Technical Specifications
| Model |
DAP 208 |
| Manufacturer |
Schneider Electric |
| Output Channels |
8 (Normally Open) |
| Operating Voltage |
24 to 240 VAC / 24 to 30 VDC |
| Current Rating (Per Point) |
2.0 A (Max) |
| Total Module Current |
12.0 A (Cumulative Max) |
| Isolation |
1500 VAC (Contact-to-Backplane) |
| Power Consumption |
320 mA at 5 VDC |
| Operating Temperature |
0 to 60 deg C |
| Storage Temperature |
-40 to 85 deg C |
| Relative Humidity |
5 to 95% non-condensing |
Installation Guidelines
- Ensure the controller backplane is powered down before inserting or removing the module.
- Verify that the module is fully seated in the backplane slot and secured with provided locking mechanisms.
- Use shielded cabling for field connections to minimize EMI/RFI interference in high-noise environments.
- Maintain proper clearance around the module to ensure adequate airflow for cooling.
- Adhere to the cumulative current limit of 12.0 A to prevent thermal degradation of the module circuitry.
FAQ
What is the primary function of the DAP 208 module?
The DAP 208 acts as a digital output interface that uses mechanical relays to switch field loads, providing electrical isolation between the Modicon 800 Series controller and external devices.
Are the output channels individually isolated?
Yes, the module features internal dielectric barriers to provide galvanic separation between the outputs and the backplane data bus, as well as between adjacent channels.
What type of field devices can this module drive?
It is designed to drive standard industrial loads such as solenoids, relays, contactors, and signaling lamps within the specified voltage and current ratings.
