Description

This module delivers powerful, precise control with four SPDT (Single Pole Double Throw) relay outputs, capable of handling up to 2A at 30VDC or 0.5A at 125VAC. Ideal for applications requiring polarity reversal or other specific control tasks, it seamlessly integrates into CANopen® networks (CiA 401) with features like LSS node-ID assignment, automatic bit-rate detection, and CAN-FD tolerance.

The device can be configured via CANopen, a manual control panel, or through a micro-USB interface using PC software, offering ultimate flexibility for various industrial or automation environments. The OLED display provides real-time status updates, local control, and easy access to SDO editing.

Sometimes a simple relay output remains the best choice. The kickoff for this device was the need for polarity reversal of a current source without influencing the potential of the current source connections. A four-quadrant source seemed a bit too excessive, so a couple of relay contacts were the way to go.

Functionality

• 4 SPDT Relays: Each handling up to 30VDC/2A or 125VAC/0.5A.
• CANopen Compatibility: Follows CiA 401 I/O module profile, with advanced support for LSS and bit-rate detection.
• OLED Display & Control: Local status monitoring, SDO editing, and control panel.
• Power Monitoring: Supports advanced power management with real-time monitoring of voltage, current, and temperature.
• Compact Design: DIN-rail mountable, with a slim 17.5mm width, making it ideal for space-constrained installations.
• Wide Power Range: Operates on a voltage range of 10-30VDC, consuming less than 1W of power.

This module is perfect for environments that need reliable, flexible, and secure relay control across industrial automation, automotive, and IoT applications.

Specifications

• 4× SPDT (single pole / double throw) relay, suitable for 30VDC/2A or 125VAC/0.5A ^* (IEC 61131-2 type 0.25)
• OLED display shows status and allows for local control, CAN-bus configuration and SDO editing
• CANopen® device profile for generic I/O modules (CiA 401)
• Supports LSS node-ID assignment and Fastscan (CiA 305)
• Supports automatic bit-rate detection between 10kbps and 1Mbps (CiA 801)
• CAN-FD 'Ready' (no active support for FD datarates yet, but tolerates FD traffic on bus)
• Up-to-date EDS file generated by and downloadable from the device
• Supports power management & monitoring features (CiA 302-9 + custom for monitoring of bus voltage, input current, CPU voltage and CPU temperature)
• Bus powered, operating voltage 10-30VDC, <1W ^*
• 3-Pin 3.81mm terminal blocks for relay contacts
• DIN-rail enclosure 101x80, width 17.5mm
• T-Bus CAN-bus connection // 5-pin 3.81mm terminal block
• Micro-USB control & bus-powered capability
• Mating terminal blocks included, including the T-Bus contact block
• ATEX increased safety 'ec' (IEC 60079-7)

Plug & Play configuration

Out of the box, the device is configured as self-starting to switch to OPERATIONAL state autonomously. The node-ID is programmed to 44 and one RPDO is configured to receive output updates. This means the device can be used out-of-the-box by writing 2 bytes to 'raw' CAN-ID 0x22C. First byte carries a bitmask to indicate which bits must be processed and which are to be ignored. Second byte contains 4 output bits relating to the respective outputs. (Raw meaning without any CANopen stack or functionality on the receiving end.)

• Automatic switch to NMT state OPERATIONAL
• RPDO1 (CAN-ID 0x200+$NODEID) receives 2 bytes with 4LSB assigned to the 4 relays