Rockwell Automation GMLC Reference Manual - Manual (Page 602)

Publication GMLC-5.2 - November 1999
565
System Phase Loss Fault 1394
A System_phase_loss_fault_1394 occurs when the 1394 system module
detects that one or more phases of the main power supply is missing.
System_phase_loss_fault_1394 is a logical (Boolean) variable, with a
value of:
• 1 (true) if the 1394 system module detects that one or more phases of
the main power supply are missing, and
• 0 (false) if not.
When System_phase_loss_fault_1394 = 1,
System_module_hard_fault_1394 = 1, and Drive_hard_fault_1394 = 1.
Clearing this fault clears Drive_hard_fault_1394.
Clear this fault with a Reset Fault block, set to Reset 1394.
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 program execution can be
resumed.
In the Tag Explorer select General System Variables, then select
System_phase_loss_fault_1394 in the Tag Window.
!
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.