Rockwell Automation 1395 Digital Reference Adapter Board - Manual (Page 61)

7 Chapter
7-1
Troubleshooting
Introduction
This chapter describes the Digital Reference Adapter Board fault
diagnostics and how they are processed by the 1395 Drive.
All Adapters perform initial fault handling based on conditions (noise,
heat, voltage etc.) within their environment, and then signal the 1395 which
provides further disposition based on system requirements. Faults are
divided into three categories as described below:
Hard Faults
Hard Faults are non-recoverable. That is, the 1395 Drive must either be
RESET or POWER-CYCLED in order to clear the faulted condition. An
Adapter Board transmits a fault to the 1395 Main Control Board through
the Dual-Port Ram as explained in the 1395 Instruction Manual. A Hard
Fault in an Adapter is designed to initiate an ECOAST stop.
Soft Faults
Soft Faults occur when an Adapter detects a condition which may result in
undesirable operation of the Drive. The Adapter takes appropriate action
within its domain to guard against further operation of the Drive (fault trip)
and signals the condition to the 1395 Drive. In addition, the fault may be
cleared and normal operation resumed at the point the fault occurred.
Warning Faults
Conditions detected within the system that may produce Soft Faults if the
condition is allowed to persist.