Absolute Measurement ACDF-3 Gebruiksaanwijzing - Pagina 7

Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} Absolute Measurement ACDF-3. Absolute Measurement ACDF-3 8 pagina's.

Pagina afdrukken
Transducer Instruction Manual
Range:
Advance
Type:
ACDF – 3
Revision:
V1.0

3. Transducer Force (MWF) Calculation

The formula for calculation of the transducer maximum working force (MWF) or force rating allows a
100% overload for tension transients or a tight edge to the web.
Remember to use the correct units.
To convert W in Kg to Newtons - N multiply by 10, the exact factor is 9.81

4. Troubleshooting

There are no user replaceable or serviceable parts in the transducer. Tampering or damage caused
during installation will invalidate the warranty.
The signal output from the transducer with the recommended 5.6V DC excitation is 250mV (nominal)
when the transducer is loaded to its maximum working force - MWF.
The transducer has built in mechanical overload stops which operate at approximately 125% of the MWF.
Forces above 150% of MWF particularly transients or tension snatches may cause permanent damage.
The ultimate overload capability before breakage is 300%, bearing damage may occur before this.
4.1

High Output Signal With No Tension

[1]
Check for correct wiring to the transducer.
[2]
Check cables and connectors for good continuity with an ohm meter, do NOT use a 'megger'.
[3]
The transducer may have too low a MWF, replace with a higher MWF transducer or reduce the
web wrap angle.
[4]
The transducer excitation voltage may be too high - this will cause permanent damage and may
invalidate the warranty.
[5]
There may be a high degree of misalignment of the transducers causing a severe pre-load.
[6]
The sensing roller weight may be too heavy, this should not exceed the MWF of the transducer.
_____________________________________________________________________________________________________________________
Absolute Measurement Ltd. (T/A CMC Controls)
t: (0) 1732 763278
| e:
Unit 19
| Silver Birches Business Park | Aston Road | Bromsgrove | B60 3EU
MWF = 2 Tmax Sin(A/2) + (W/2) Sin(B)
MWF MUST BE GREATER THAN SENSING ROLLER WEIGHT W
ANGLE 'A' IS 30 DEGREES MINIMUM
| w: absolutemeasurement.co.uk
MWF = 2 Tmax Sin(A/2) - (W/2) Sin(B)
6