PPC3-12-413/Best Practices
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Appendix A. Best Practices
The following paragraphs outline the best practices for operating the
PPC3-12-413 in a safe, effective manner, that does not damage the panel
PC. Read this section carefully.
Power Supply
Power Supply Budget
Evaluate your power supply budget. It is usually good practice to budget
twice the typical power requirement for all of your devices.
Zero-load Power Supply
Use a zero-load power supply whenever possible. A zero-load power
supply does not require a minimum power load to regulate. If a zero-load
power supply is not appropriate for your application, then verify that the
panel PC's typical load is not lower than the power supply's minimum
load. If the panel PC does not draw enough power to meet the power
supply's minimum load, then the power supply does not regulate properly
and can cause damage to the PPC3-12-413.
Power Harness
Minimize the length of the power harness. This reduces the amount of
voltage drop between the power supply and the PPC3-12-413.
Avoid Electrostatic Discharge (ESD)
Only handle the circuit board and other bare electronics when electrostatic
discharge (ESD) protection is in place. Having a wrist strap and a fully grounded
workstation is the minimum ESD protection required before the ESD seal on
the product bag is broken.
Use Proper Power Connections (Voltage)
When verifying the voltage, measure it at the power connector on the PPC3-12-
413. Measuring it at the power supply does not account for voltage drop
through the wire and connectors.
The PPC3-12-413 requires 5V and 12V to operate. Verify the power
connections. Incorrect voltages can cause catastrophic damage.
The PPC3-12-413 has a single 8-pin power connector. 5V and 12V inputs and
ground are required to power the board.
