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PHD Fault Interpretations & Resolutions
PHD Fault Interpretations & Resolutions
Sebastien Gouin-Davis avatar
Written by Sebastien Gouin-Davis
Updated over a week ago

The first thing to check when you encounter a fault is the physical space, check failed lights, poor wiring, good weather protection. Next, confirm that you are running the most current version. If the PHD is safe and secure, your firmware is current so use the following information to help resolve any faults.

PHD Fault Codes

Fault codes are found in the ST Chn in the data dictionary of the PHD. When a PHD is at fault, your lights may not function properly, it is important to clear the fault.

102: Current Overload (Digital Limit)

  • Description: Drawing too much current 4.2 Amps

  • Resolution: ask Amatis to increase current trip SP (4,5,10)

103: Current Trip (Analog Limit)

  • Description: Drawing too much current at On.

  • Resolution: Fix the light or turn off this feature. Ask Amatis to increase current trip SP (4,5,10)

104: Voltage High

  • Description: Positive voltage is out of range

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

105: Voltage Low

  • Description: Negative voltage is out of range

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

106: Current Mismatch (high low)

  • Description: Plus and minus currents do not match (1A threshold)

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

107: Parallel (Stray voltage on channel)

  • Description: Foreign voltage or paralleled positive outputs found on startup test.

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

108: Stuck

  • Description: Unable to turn off positive voltage on startup (shorted FET or foreign voltage) -> RMA

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

109: Lockout

  • Description: Channel fail / retry count exceeded.

  • Resolution: Reboot mcba and if the issue persists RMA the PHD

110: System (bus under/over voltage)

  • Description: Bus under or overvoltage etc.

  • Resolution: Reboot mcba, RMA (mean well fail?)

111: Short Circuit

  • Description: PSM could not raise output voltage during the initial inrush pulse train

  • Resolution: Reboot mcba, check the wiring

112: Power Overload

  • Description: Digital power measurement exceeded setpoint (normally 99VA)

  • Resolution: ask Amatis to increase current trip SP (4,5,10)

115: Fault out of range

  • Resolution: turn the channel on by writing 1100

255: Fault out of range

  • Resolution: turn the channel on by writing 1100

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