Operating Manual CMGZ432
4
2 Definitions
Offset:
Correction value for compensation of the zero point difference. Thanks to the
offset, it is ensured that a force of 0N will generate a signal of 0V exactly.
Gain:
Amplification factor for the measuring signal. Use of proper value will set the
measuring range of the sensor exactly corresponding to the signal output range (0...10V).
Strain gauge:
Electronic component that will change its resistance while its length has
changed. Strain gauges are used in the FMS force sensors for acquisition of the feedback
value.
Pilot control:
If pilot control is activated, a reel diameter signal (for ex. from diameter
calculator, distance sensor, PLC o.e.) is taken into the calculation of the drive power and
the drive will be „pilot controlled“ with the calculated value. Then, the controller has only
to control the variation of the material tension. Due to that, the stability of controlling will
be improved.
Single quadrant resp four-quadrant drive:
Expression refers to the speed/torque
diagram used in the drive technology. A single quadrant drive can only drive in forward
direction; a four-quadrant drive can both drive and brake in forward and reward direction.
3 System components
The FMS unwind controller consists of the following components (refer also to fig. 1):
Force sensors
•
For mechanical/electrical conversion of the tension force
•
Force measuring bearing
•
Force measuring roller, Force measuring journal or Force measuring bearing block
Electronic unit CMGZ432
•
For supplying of the force sensors and amplifying of the mV signal
•
With integrated digital PI- or PID-controller to drive the drive unit
•
Speed or torque control supported
•
External diameter or line speed signal can be processed an added to the output value
•
With operation panel for parametrization
•
Interface RS232
•
Interface CAN-Bus
•
For mounting into insert card support block EMGZ555959 (by mounting into switch
cabinet)
•
Mounted in separate housing (CMGZ432.E)
•
Integrated power supply (by using separate housing)
•
Supports connection of an external feedback display
Drive
•
Speed or torque controlled drive
•
AC or DC motor
•
many different products are suitable
(Italic components as variant or option)
