Fault and Warning Messages - continued
Table 8-1 Fault and Warning Messages
Error
Message Cause
Action
LINE
No mains supply synchronization pulses
being received.
The three-phase supply is used in a
crossover detection circuit to generate timing
pulses for accurate phase control and firing
the triac.
If the phase detection fails on one or two
phases then there is no pulse to use to
measure phase angle and the LINE error
message is generated.
All circuits on the healthy phases will
continue to work normally.
• There is a phase detection circuit on each
card and a common phase detection
circuit on all other controller types.
• Although a fault in such circuits may cause
the LINE error message, such fault is very
rarely seen.
• The most common error is either the
absence of one phase or, if a plug has
been rewired incorrectly, a swapped phase
and neutral.
• If a LINE error message occurs then
switch off and isolate the controller and
check supply wiring for presence of all
three phases.
LINK
The console is switched to a remote
controller with a network link but it cannot
communicate with the remote unit.
The console can display the appropriate
zones for the particular tool but it cannot
relay any temperature information. It shows
a LINK fatal error in place of the actual
temperature.
• Check that the network link is good and /
or the remote controller is still switched on
and available.
LOAD
No load on that zone. Only occurs when in
manual closed loop mode where the current
is pre-set.
The current sensing circuit has not detected
a current flow. The zone is flagged as not
having a load.
• Isolate the system supply and check the
connections between the controller and
the tool heaters.
• Also check the heater for continuity.
N/Z
The console has detected a control card
but the card cannot communicate with the
console.
• If all zones show N/Z and no cards show
/ flash their SCAN LEDs, check the
communication lead between the console
and the controller cabinet.
• If only one or two zones show N/Z, check
the card for faults.
NONE
The console has detected a control card that
has no settings.
•
This error message may be seen briefly
during switch on, but it should disappear
after the initial card scan.
• If the message persists then you may
need to reapply the correct card settings
on the SetUp page.
REV
The card has detected an abnormal input at
the T/C termination that indicates a shorted
or reversed thermocouple.
• If the
REV
alarm persists, switch off the
controller and investigate the zone. The
offending zone can also be slaved to a
good zone until the fault can be cleared.
8-3
TROUBLESHOOTING
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M1 Plus Controller User Manual
