Warner Electric • 800-825-9050
P-2003-2 • 819-0420
15
Note:
If maximum starting torque available is less
than the actual starting torque required, the amount
of angular travel of the roll follower potentiometer
must be increased .
If the voltage reading is greater than 1 .3 VDC,
decrease the front panel tension adjust until a 2 .5
VDC reading is obtained .
o
17 . Set the front panel tension adjust for the
desired starting torque required for the
application .
o
18 . Start the machine and draw the web through .
o
19 . Monitor the voltage at terminals 9 and 11 of
terminal block TB1, as well as the brake current
on terminal 1 of terminal block TB2 . As the roll
diameter decreases, the sensor voltage and the
brake current will decrease, keeping the tension
relatively constant .
o
20 . After an initial run has been completed,
remove power from the system and wait
approximately 30 seconds before proceeding to
the next step .
o
21 . Disconnect the meter from the sense magnet
lead to terminal block TB2 . Tighten the lead
screws .
Proceed to step 23 in next section .
All Other Two Wire Tension Brakes
o
5 . Connect a DC voltmeter between terminals 2
and 3 of terminal block TB2 .
Note:
Use a DC voltmeter that reads from 0 to 24
VDC . Connect the positive (+) lead to terminal 2 and
the negative (-) lead to terminal 3 .
o
6 . Reapply power to the control system .
o
7 . Place the mode selector switch in the brake
“off” position . The meter should read zero
voltage and the brake should be free wheel .
o
8 . Place the mode selector switch in the
brake “stop” position . The meter should read
approximately 24 VDC and the brake should be
locked .
o
9 . Place the mode selector switch in the brake
“run” position and set the tension adjust
potentiometer to its maximum (fully clockwise)
setting .
Note:
Refer to Table 1 for various inputs and outputs
when using the roll follower system .
o
10 . Connect a second DC voltmeter between
terminals 9 and 11 of terminal block TB1 .
Note:
Use a DC voltmeter that measures zero to 10
VDC and connect the positive (+) lead to terminal 9
and the negative (-) lead to terminal 11 .
o
11 . With the roll follower potentiometer disconnected
from the roll follower arm, position the follower
arm to true zero, which should be the centerline
of the unwind spindle .
o
12 . Adjust the roll follower potentiometer to zero
voltage on the voltmeter connected between
terminals 9 and 11 of terminal block TB1 .
o
13 . Connect the roll follower potentiometer to
the roll follower arm . After coupling the follower
arm to the potentiometer, recheck the voltage
between terminals 9 and 11 of terminal block
TB1 to insure that the voltage is still zero VDC .
o
14 . Place a full roll of material on the unwind
stand .
o
15 . Set the roll follower arm on the unwind roll .
o
16 . Check the voltage between terminals 9 and
11 of terminal block TB1 and refer to Table 1 . If
the voltage reading is less than 0 .8 VDC, refer to
Table 1 for the nominal output voltage available .
Note:
If maximum starting torque available is less
than the actual starting torque required, the amount
of angular travel of the roll follower potentiometer
must be increased . If the voltage reading is greater
than 1 .3 VDC, decrease the front panel tension adjust
until a 1 .3 VDC reading is obtained .
