Cleveland Motion Controls WebPro Intermediate Tension Controller MWP-12663 REV BA - Manual (Page 19)

AO-70174
19
Revision BA
WebPro Intermediate Tension Controller
Additional Information
The CCFL ( cold cathode fluorescent light ) has a minimum expected life of 20,000 hours.
The non-volatile memory is battery backed. The battery has an expected life of one year without a
recharge. The battery will recharge when the Controller is powered.
During power up the Controller may output a signal which may cause the machine to move if the
controlled drive is powered and enabled.
External tension set point input
This is an analog signal of 0 to +10V DC, for Master - Slave applications. The input resistance is 100K S.
The EXT SET POINT must be enabled in Machine Parameters to use this feature.
Tension set point output
This is an analog signal of 0 to +10V DC at 2mA maximum, for Master - Slave applications.
Adjusting the screen contrast
There are two unmarked keys, one below the CONFIRM key the other below the TENSION OFF key.
Press both together and release, the KEY LED will flicker. Whilst flickering press one or the other
unmarked key as required to adjust the screen contrast, release and allow the flickering to terminate.
Troubleshooting
With the exception of the fuses, F1 - 160mA and F2 - 1A, there are no user replaceable or serviceable
parts in the Controller. If a fuse is ruptured the cause should be investigated before replacement.
1. If the POWER LED is lit, the incoming supply and fuses F1 rated at 160mA and F2 rated at 1A are
correct. If the screen is blank or the backlight is not functioning the Controller must be returned to CMC
Inc.
2. Check that the transducers are wired correctly and that the excitation voltage between TB2 (1 and 4),
and between TB3 (2 and 5) is correct for the type of transducers used. Reset link LK1 if required.
3. Check that the Machine Sequencing switching is wired correctly and enabled from the Machine
Parameters screen.
4. Check that the Output Level Limit or Max Trim are not set to zero, 0%.
5. Observe if the tension bar graph is fluctuating while in AUTO mode. If the fluctuation is greater than +/-
5% of maximum tension, investigate the motor and drive to confirm that it is of a type suitable for tension
control with adequate torque rating and this torque is constant as it rotates, that all shafts and rollers are
concentric and rotate freely, and the web speed is constant.