Using Over Temperature Protection Lock (Otp); Defining The Otp Mode; Resetting In Latch Mode - Xantrex Watt Series Programmable DC Power Supply XG 850 Operating Manual

Using Over Temperature Protection Lock (OTP)

The OTP lock protects the power supply in the event of an over
temperature alarm. This alarm could be caused by ventilation restriction
or overheating due to fan failure.
Two modes are available:
•
•
If the OTP is activated, the main output will turn off and PRO O7P (over
temperature protection) will blink on the display. The OTP alarm is an
alarm that will auto recover when the temperature falls back into normal
bounds.

Defining the OTP Mode

To define the OTP lock:
1. Turn the 9-position mode control to the PRT position.
2. Turn the rotary Adjust/Enter control until PRO O7P is displayed.
3. Press the rotary Adjust/Enter control to display O7P ON or OFF.
4. Turn the rotary Adjust/Enter control to change to On or Off.
5. Press the rotary Adjust/Enter control.
The SCPI command (s) for these instructions are:
[:]SYSTem[<channel(s)>]:PROTection:LATCh

Resetting in Latch Mode

To reset the power supply if the OTP alarm is tripped and the OTP mode
is set to On (latching enabled), press and hold the rotary Adjust/Enter
control for approximately 3 seconds.
The SCPI command (s) for these instructions are:
[:]OUTPut[<channel(s)>]:PROTection:CLEar
[:]SYSTem[<channel(s)>]:PROTection:LATCh
M370078-01
Auto recovery (OTP OFF) where the power supply turns on again
after cooling down.
Latch mode (OTP ON) where you will need to reset the unit by
turning the front panel power switch to Off and then On again.
PrO OUP is displayed.
Using Over Temperature Protection Lock (OTP)
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