Rockwell Automation 1395 Digital Reference Adapter for RTP Applications - Manual (Page 37)

Publication 1395-RTP-5.2 - September 1997
Chapter
6
Troubleshooting
Introduction This chapter describes the Digital Reference Board fault diagnostics
and how they are processed by the 1395 Drive.
All Adapters provide initial fault handling based on conditions within
their environment, and then signal the Drive which provides further
disposition based on system requirements. Faults are divided into
three categories.
1. Hard Faults
Hard Faults are nonrecoverable. 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 Computer Board through the Dual-Port Ram as explained
in the 1395 Instruction Manual. A Hard Fault in an Adapter is
designed to create an ECOAST stop.
2. Soft Faults
Soft Faults occur when an Adapter Board detects a condition
which may result in undesirable operation. The board takes
appropriate action within its domain to guard against further
operation 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.
3. Warning Faults
Conditions detected within the system that may produce Soft
Faults if the condition is allowed to persist.
Digital Reference
Fault Messages The fault messages available on the Digital Reference Adapter Board
are:
• DR-01-DIG REF OK
Indicates no faults are present in the Adapter.
• DR-60-ILLEGAL Mode – Soft Fault
Indicates an Internal Adapter error. Power down and reapply
power. If not solved, replace Digital Reference Adapter.
Reapply power, if not solved, reinstall original Adapter,
replace main control board, reapply power.
• DR-70-DP HANDSHAKE – Soft Fault
The 1395 Main Computer Board is no longer maintaining
communications with the Adapter through Dual-Ported
RAM. Ensure proper connection to Microbus interface.
Power down and then reapply power. If not solved, replace
Digital Reference Adapter. Reapply power; if not solved,
reinstall original Adapter, replace Main Control Board and
reapply power.