Hardware Malfunction Alarms

Power On Status Signal

Power On Status signal indicates a fault condition in the power supply. Power On Status signal is a TTL output signal at Pin J2.13 with reference to COM_ISOLATED (Pin J2.2 or Pin J2.6).

During normal operation, the Power On Status signal will be high. If the output is disabled for any reason, the Power On Status signal will go low.

The following conditions will set the Power On Status to a low level:

AC fail

 

• Over Voltage protection (OVP)

 

• Under Voltage Protection (UVP)

 

 

• Over Current Protection (OCP)

3

• Over Temperature protection (OTP)

 

Foldback protection

 

 

Interlock

 

Output Off

 

• Shutdown activated (rear panel shutdown).

 

Internal hardware malfunction

 

Fan failure

 

Hardware Malfunction Alarms

The power supply will turn off the output. An error message will be displayed in the event that:

OVP trips

Voltage deviation in CV mode reaches more than ±5% from the set level.1

Current deviation in CC mode reaches more than ±5% from the set level.1

1.These two forms of hardware malfunction are only monitored in the corresponding APG mode.

M370078-01

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Xantrex Technology XG 850 manual Hardware Malfunction Alarms, Power On Status Signal