gefran TPD32-EV-500 series - Drive Used as a Winder - Winding Side = down; Drive Used as an Unwinder - Unwinding Side = up

—————— TPD32-EV ——————
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2. Drive used as a winder – winding side = down
M
W[-]
DRIVE
R
Line speed
T[-]
M
Nip roll
Winder
Winder side=Down
Wind/unwind=Winder
Figure 6.17.14: Drive used as a winder – winding side = down
Ifthespeeddemandfunctionisused,thesystemcreatesanegativespeedreference;itisthereforenecessaryto
connectthemotorsothat,withthispolarity,thecoilwindsthematerialstartingfromthelowerside.Thewind-
ingtorqueisnegative.
3. Drive used as an unwinder – unwinding side = up
M
W[-]
DRIVE
R
Line speed
T[+]
M
Nip roll
Unwinder
Winder side=Up
Wind/unwind=Unwinder
Figure 6.17.15: Drive used as an unwinder – unwinding side = up
Ifthespeeddemandfunctionisused,thesystemcreatesanegativespeedreference;itisthereforenecessary
toconnectthemotorsothat,withthispolarity,thecoilunwindsthematerialstartingfromtheupperside.The
unwindingtorqueispositive.