Rockwell Automation 1395 Reel Tension Paster Adapter - Manual (Page 16)

Publication 1395-RTP-5.1 - September 1997
2-4 Description of Operation
Mode 8
AUTO SLACK, WEB LOOSE
With the “Auto Slack” signal present, the web out detector is
de-energized when the dancer reaches full position and the web
becomes fully slack. This sets the torque reference to zero which will
allow the motor to free-wheel, (no armature current or torque) but
keeps the Drive energized. The normal exit from Mode 8 is back to
Mode 7 via the Dancer reaching mid-position unless both inputs DI2
and DI7 are low, in which case, Mode 8 exits to Mode 11.
Mode 9
REVERSE RUN, DANCER HIGH
The Reverse Run Mode is designed so the belts will slowly run in
reverse to pull the dancer to the center position.
In the Reverse Run Mode, a “Slack Removal” signal is received by
the Drive. This sets the Drive logic command to start the Drive and
follow the internal preset 2 speed reference. This signal is adjustable
with Drive Parameter 634 and requires a negative number for reverse
operation.
When the web out detector senses the web out of position on the slack
side of center, the belts will reverse slowly.
The Drive logic command ensures that the Drive will run from the
preset 2 speed reference with no dancer trim.
Mode 10
WEB OUT
If the web breaks when the Drive is in any Normal Run Mode (Modes
1 through 5), the Drive goes into a regenerative stop.
Configuration Parameter 572, Bit 2 will determine if Drive will go
into a full regen stop or a ramped regen stop. Refer to Logic State
Diagrams.
When the Drive senses that the dancer has gone fully slack (dancer
full up), the Drive loses its run command. The main contactor will
remain energized until the Drive senses zero speed.
!
ATTENTION: If the “Drive Permit” signal is high,
the Drive will start as soon as dancer is pulled down
below web-out position.