Rockwell Automation GMLC Reference Manual - Manual (Page 596)

Publication GMLC-5.2 - November 1999
559
Important: Do not use an Equation block to clear this fault. The Reset
Fault block not only resets this variable to zero, it also resets
the Drive OK Relay inside the 1394 system module. This
relay must be reset before the System Bus can be reapplied.
In the Tag Explorer select both Axis System Variables and the desired
physical axis, then select Axis_Motor_over_temp_fault_1394 in the Tag
Window.
Axis Drive Over Temp Fault 1394
An axis drive over temp fault occurs when an enabled 1394 axis module
detects that the ambient air temperature, inside the associated axis
module, becomes too hot.
Axis_Drive_over_temp_fault_1394 is a logical (Boolean) variable, with a
value of:
• 1 (true) if an enabled 1394 axis module detects that the ambient air
temperature, inside the associated axis module, becomes too hot, or
• 0 (false) if not.
This fault could occur for any of the following reasons:
• Excessive ambient temperature.
• Insufficient air flow.
• Excessive acceleration and deceleration duty cycle.
When Axis_Drive_over_temp_fault_1394 = 1,
Axis_module_hard_fault_1394 = 1, and Drive_hard_fault_1394 = 1.
Clearing this fault clears Drive_hard_fault_1394.
!
ATTENTION: A hard fault is a serious condition! Be
certain to correct the underlying cause of this fault,
before clearing the fault and reactivating the drive.