Absolute Measurement CLT, Instruction Manual

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_____________________________________________________________________________________________________________________
Absolute Measurement Ltd. (T/A CMC Controls)
t: (0) 1732 763278
| e: sales@absolutemeasurement.co.uk | w: absolutemeasurement.co.uk
Unit 19 | Silver Birches Business Park | Aston Road | Bromsgrove | B60 3EU
7
Transducer Instruction Manual
Range: Ultra
Type: CLT
Revision: V1.0
To convert W in Kg to Newtons - N multiply by 10, the exact factor is 9.81
MWF = 2 Tmax Sin(A/2) + (W/2) Sin(B) 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
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 200mV (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] The sensing roller weight may be too heavy, this should not exceed the MWF of the transducer.
4.2 Low Output Signal With Maximum 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 high a MWF, replace with a lower MWF transducer or increase the
web wrap angle.
[4] The transducer excitation voltage may be too low.
4.3 Wrong Polarity of Output Signal
[1]
Check that the web path is correct.
[2] The transducer may be incorrectly orientated, rotate 180

to correct this. If rotation is not possible,
interchange the transducer excitation supply or output signal leads at the indicator or controller
terminals.