Entering The Rotary Encoder Type; Input Of Encoder Data - Novexx Solutions ALX 73 Series Service Manual

04/13 Rev. 5.07-00

Entering the rotary encoder type

Depending on the features of rotary encoder and label dispenser, there are different
ways to count the impulses generated by the rotary encoder:
1. Call (LMA)
2. Enter the type of measuring wheel which is mounted on the rotary encoder shaft
Single-phase operation
Only one phase of the encoder signal (signal A) is utilized.
Advantage:
Disadvantage:
If the conveyor is standing still, vibrations can produce „faulty" signals, which the la-
beller cannot distinguish from „real" signals.
Double-phase normal
Many rotary encoder produce a second signal (signal B), which is out of phase by 90°.
operation
Using this signal can overcome the restrictions of single-phase operation.
Advantages:
Disadvantages:
Double-phase inverted
If the phase relationship (leading or trailing) between the sensor signals A and B
operation
doesn´t match the counting direction of the labeller, the labeller calculates nonsense
speed values. The following measures correct this problem:


Input of encoder data

Example: Entering the values for the recommended rotary encoder
Setting resolution:

Setting measuring wheel diameter:

Switching on speed adaption:

SERVICE MANUAL
MACHINE SETUP > Encoder
(further details see below)
Less expense (as with double-phase)
Lower resolution (as with double-phase)
• Detection of the rotational direction, even when standing still
• Double resolution
• Higher expenses (the sensor must be able to produce signal B, the labeller must
be able to utilize it)
• The rotational direction must be configured
• Operating the rotary encoder in opposite direction (e. g. by mounting it on the op-
posite side of the conveyor), or
• Changing the cables, that is exchanging A and B, or
• Connecting the inverse signal /B instead of B, or
• Configuring the inversion of signal B at the labeller:
MACHINE SETUP > Encoder type
Set function
Set (LMA) MACHINE SETUP > Encoder Resol.
Set (LMA) MACHINE SETUP > Encoder Diameter
Set (LMA) MACHINE SETUP > Speed Adaption
ALX 73x
type.
to „2 Phases invert."
to "500 Pulses/Turn".
to "63.7 mm".
to "On".
43
Installing APSF