Absolute Measurement ACDF-3 Manual de instrucciones - Página 4

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Transducer Instruction Manual

Range:

Advance

Type:

ACDF – 3

Revision:

V1.0

2.2

Installation Precautions

To ensure proper installation and operation of the tension system, the following steps should be

performed in sequence - always install, orientate and firmly bolt down the transducer BEFORE installing

the tension sensing roller.

Welding. Unplug the cable connector from the transducer before any electric welding is undertaken on

the machine.

Transport. It is recommended that the tension sensing roller is removed from the transducer before the

machine is transported to prevent excessive shock being transmitted through to the transducer.

Failure to carry out these precautions could seriously damage the transducer and invalidate the warranty.

2.3

Precision machined surfaces are necessary as the transducer is located in the machine frame by the

close tolerance mounting spigot. The close concentricity of this mounting spigot to the bearing diameter

allows parallel path rollers and thus avoids web tracking problems. No appreciable force should be

transmitted through the four fixing bolts. See the Transducer Dimensions drawing for full details.

2.4

The bearing normally fitted by CMC Controls is without seals and has only the bearing manufacturers

preservative. The bearing will require lubrication by the user prior to use according to the service and

environment. When the transducer is for use in vacuum the bearing will need to be removed from the

transducer, degreased and suitably lubricated by the user before refitting into the transducer. To lubricate

the bearing remove side plate "A" only. Periodic inspection of the lubricant is advised in all cases.

2.5

The tension sensing roller should be dynamically balanced when the roller speed exceeds 300 RPM as

excessive vibration can damage the transducer. Any out of balance force should not exceed 10% of the

maximum working force (MWF) of the transducer. The sensing roller must not be driven or have any force

applied to it except by the web. Even with a balanced roller, a vibration can be set up at the critical roller

speed. To ensure that this problem is avoided, the critical roller speed should be at least 20% above that

attained at maximum web speed. Consult the roller manufacturer for advice.

_____________________________________________________________________________________________________________________

Absolute Measurement Ltd. (T/A CMC Controls)

t: (0) 1732 763278

| e:

Unit 19

| Silver Birches Business Park | Aston Road | Bromsgrove | B60 3EU

| w: absolutemeasurement.co.uk