Nautel XR12, Installation Manual

Page: 59 / 92

XR12 Installation Manual Control and monitoring
Issue 3.0 2009-07-15 Page 9-5
Softstart overtemp
The software keeps track of the calculated temperature of the softstart resistors and triggers this fault
if that value is greater than 150°C (302°F).While this fault is on, RF power will not be available.
The temperature is assumed to rise 20°C (68°F) for each cold start, and 10°C (50°F) for each warm
start. The calculated temperature falls exponentially between starts.
The transmitter’s GUI
Status
screen will show the current, calculated temperature, if it is above
150°C (302°F).
RF Power module faults
PM Fault A, B, or C
• A fault is being reported by power module A, B, or C.
Other faults
Low backup battery
This fault indicates that the backup battery voltage has fallen below an acceptable level. The fault may
be caused by weak batteries, or a fault in the detection or alarm circuitry on the control/monitor
PWB.
The backup battery should be replaced while ac power is
ON
. If the ac power faults, without adequate
backup battery power, then the log files will be lost.
CAUTION:
Performing a warm or cold start while this fault is active is strongly discouraged.
CAUTION:
Do not wait for an extended period to replace the batteries. The control/monitor
PWB’s microcontroller may not retain its settings if ac power is turned off when
the backup battery voltage is too low.