ABB PFEA 113 User Manual page 56

Tension Electronics PFEA113, User Manual
Chapter 3 Commissioning
3-24
• By calculation (Menu EnterWrapGain)
Wrap Gain is a scaling factor which corresponds to the ratio between Web Tension (T) and
the force component (F
direction.
The Wrap Gain range is 0.5 - 20. If you try to set the wrap gain outside this range, the
message "WrapGainTooLow" or "WrapGainTooHigh" will be shown on the display.
The wrap gain can be set with a resolution of 0.01.
Examples describing the principle of calculating Wrap Gain:
Wrap angle
T
T
F
R
F = 2T
R
T
Wrap gain =
F
R
T
Wrap gain =
2T
Wrap gain = 0.50
(Min. value of Wrap Gain)
See calculation of Wrap Gain in Appendix (B, C, D, E, F, G or H) for installed load cell
type.
) from web tension that is acting in the load cell measuring
R
T
T
F
R
F = T
R
Wrap gain =
= 0.50 Wrap gain
=
Wrap gain = 1.00
Wrap angle
T
Installations where F
is lower than T
F < T
R
T
Wrap gain =
F
R
T
= 1.00
T
Wrap gain = > 1
(Max. permitted value
of Wrap Gain is 20)
3BSE029382R0101 Rev C
T
F
R
R
T
F
R