SQ4-AX

Based on an 32-bit SoC microcontroller, the SQ4-AX CompactPCI® Serial peripheral card provides sensors for temperature, humidity, motion and acceleration (Gyro). System voltages are monitored by a precision ADC. The front panel is equipped with a group of status LEDs, two tactile switches and a buzzer.

Up to three fans can be individually controlled by the SoC, and directly attached to an on board connector.

The microcontroller communicates with the host CPU card via backplane USB2 (Ethernet over USB) and I²C. In addition, the front panel is equipped with a Type-C receptacle and either one of RJ45, M12-X or SMA (Wi-Fi) Ethernet connectors, for external control and programming.

For railway applications the SQ4-AX is equipped with a 1.5kV isolated 16-144VDC power control circuitry. Up to 25A can be passed through from a 3W3 D-Sub front panel connector to an on-board connector. A solid state relay is provided for power on/off. Current limiting can be controlled by means of a programmable eFuse. Both front input voltages +VIN and Ignition are permanently monitored by a precision ADC.

The SQ4-AX can help to improve the system reliability dramatically, by surveillance of environment parameters, monitoring of voltages and control of the system fans.

A firmware framework is available for customers, as well as turnkey project programming by EKF.