S&T 44011-0208-13-2, User Manual

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pITX-iMX8M – User Guide Rev. 1.4
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5. Connect and turn on PSU
Connect PSU to the board by a +12 V DC 2.5mm 4-pin wafer connector or alternatively connect an ex12 V
DC power adapter to the rear DC jack.
Figure 2: Power Jack (left) and Internal Connector(right)
6. U-Boot Setup
Enter the U-Boot setup, more information in Chapter 7/.
3.2. Safety Requirements according IEC 62368
Take care when designing chassis interface connectors in order to fulfil the IEC 62368-1 standard. Users of pITX-
iMX8M must evaluate the end product to ensure compliance the requirements of the IEC 62368-1 safety standard
are met:
 The motherboard must be installed in a suitable mechanical, electrical and fire enclosure.
 The system in its enclosure must be evaluated for temperature and air flow considerations.
 The motherboard must be powered by a CSA or UL approved power supply that limits the maximum input
current to 5
A to an external 12 V locking barrel-type DC jack or to an internal 12 V 4-pin DC power
connector.
 For interfaces having a power pin such as external power or fan, ensure that the connectors and wires are
suitably rated. All connections from/to the product shall be with SELV circuits only.
 Wires have suitable rating to withstand the maximum available power.
 The enclosure of the peripheral device fulfils the fire protecting requirements of IEC 62368-1.
The device is Class III equipment in which protection against electric shock relies upon
supply from Save Extra Low Voltage (SELV) circuits and in which hazardous voltages are not
generated. The device is specified that only on earthed SELV DC Main Supply should be
connected. It is only permitted SELV circuits connect to the device. Only current limited
devices with fuse or circuit breaker for mains current limiting are allowed to be connected.