Tension oscillates (continued)
STAB needs adjustment
1. Go to OPTIMIZE STAB (ignore reference
to full roll).
2. Press and hold
é
until the oscillation
stops.
3. If oscillations cease, optimize COMP and
then optimize ERROR LIM.
4. If STAB is max go to
)
STAB is max
(
.
Tension oscillates (continued)
STAB is max
This is extremely rare. You have a system
that needs more than a 150 sec integrator to
be stable. Verify this result by performing
the diagnostic under
)
Tension oscillates
(
. If
verified this system may need to use PID for
the OPTIMIZE METHOD. Consult the
factory.
Front panel TENSION
ON/OFF does not work
DIGITRAC 2 configured for
LEVEL for external TENSION
ON/OFF
When LEVEL is selected for TENSION
ON/OFF only external tension on/off can be
used.
E-STOP is active
E-STOP is wired incorrectly
JP8-7 not set for the proper
logic supply.
If the internal logic is being used (the factory
default) TB4.2 must be connected to TB4.1
to disable E-STOP. Also verify JP8-7 set to
)
INT
(
.
If an external logic supply is used see
Section 6.7.
Cannot change to a different
setup
Not in HOLD mode
RUN/STOP not wired
correctly
JP8-7 not set for the proper
logic supply
If the internal logic supply is being used (the
factory default) TB4.4 must be connected to
TB4.3 to be in HOLD mode. Also verify
JP8-7 set to
)
INT
(
.
If an external logic supply is used see
Section 6.7.
14
