HEIDENHAIN CNC Pilot 4290 - Manual (Page 417)

HEIDENHAIN CNC PILOT 4290 405
■ Prerequisite: The machine tool builder
must enter the required actions and
provide complete descriptions of them.
■ All status changes including
acknowledgment of the maintenance
actions are reported to the PLC. Refer to
the machine manual to see whether
further consequences must be made from
due or overdue maintenance actions.
9.3 Maintenance System
Explanation:
I: Interval
D: Duration
Q: Acknowledgment time period
t1: Maintenance action will soon be due
t2: Maintenance action is due
t3: Maintenance action is overdue
9.3 Maintenance System
Maintenance System
The CNC PILOT reminds the machine user of the required
maintenance and repair tasks. Every action is described briefly
(assembly, maintenance interval, responsible person, etc.). This
information is displayed in the ”Maintenance and repair actions” list.
A comprehensive description of the maintenance action is provided if
desired.
After the user completes a maintenance action, he acknowledges it.
Then the maintenance interval begins again. The CNC PILOT saves
the time of acknowledgment together with the nominal date in a log
file. The acknowledgment log files can be called by the service
personnel and evaluated. You can see at least the last 10
acknowledgments.
Display of maintenance status: ”Traffic light” at right next to the
date/time information
■ Green: No maintenance actions required
■ Yellow: At least one maintenance action is due soon
■ Red: At least one maintenance action is due or overdue
The status with the highest priority is displayed (red before yellow,
yellow before green).
Dates and intervals (see illustration):
■ I – Interval: The period of time between maintenance actions as
fixed by the machine tool builder.
During the on time of the control, the current maintenance interval
is continuously reduced. The remaining time appears in the ”When”
column.
■ D – duration: Period defined by the machine tool builder between
”due” and ”overdue” maintenance actions.
■ Q – acknowledgment period: Within this period, the maintenance
action can be conducted and acknowledged.
■ t1 – maintenance action is due soon:
■ Starting from this time point the maintenance action can be
completed and acknowledged.
■ The status is marked yellow.
■ Calculation: t1 = Early warning entry * interval / 100
■ t2 – maintenance action is due:
■ Starting from this time point, the maintenance action should be
completed and acknowledged.
■ The status is marked red.
■ Calculation: t2 = interval
■ t3 – maintenance action is overdue:
■ The time point of the maintenance action has been exceeded.
■ The status remains red.
■ Calculation: t3 = interval + duration