Honeywell HPM, Сервисная инструкция

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R688 HPM High-Performance Process Manager Service 301
December 2020 Honeywell
4. Fault Isolation
4.1 Overview
CAUTION The yellow-
colored “Voltage Margin” jumper plug that is located in the area behind the
bezel door at the front of the High-Performance I/O Link card must always be in the
Normal (+5 vdc) position during normal operation. The jumper plug must never be
removed or moved to the Low Margin or High Margin position while on-control. An
HPMM Soft failure will be reported if it is not in the Normal position.
Purpose
This section provides the information required for HPM fault isolation (troubleshooting). It includes a
troubleshooting flow chart that guides the user through isolating faults in the HPM It also provides the
user with fault code tables, which include a description of the fault and the recommended corrective
action(s) to resolve the problem.
Release 500 software displays
The displays shown in this section are reproductions of console screens created by Release 500 software.
4.2 Failure Types
Two types of failures
There are two general types of failures that can occur in the High-Performance Process Manager, "Hard
failures" and "Soft failures."
Hard failure
A Hard failure causes an HPMM or IOP to enter a predefined failure state. While in this failed state, the
module cannot perform its normal functions and will be in a reset condition (IOPs) or executing a
"failure" program (HPMM).
Soft failure
A Soft failure allows a card to continue operating in its current state (OK or Idle), but its operation is
degraded. The level of degraded operation could be insignificant or significant, depending on the nature
of the Soft failure. Some Soft failures can automatically clear (clearing is done by the HPMM or IOP
without intervention), other Soft failures require manual intervention for resolution.
Hard and Soft failures
Both the Hard and Soft failure types are described below.
HPM failure
An HPM failure indicates that a HPMM Hard failure, as described below, has occurred in an HPM. The
HPMM cannot control the process or act as a redundant partner because of the nature of the fault in the
HPMM. The four types of Hard failures that cause the HPMM to fail are indicated by a status of
FAIL in
the HPM Box (grid) on the UCN Status display.