JVL MAC050, User Manual

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22 JVL Industri Elektronik A/S - User Manual - Integrated Servo Motors MAC050 - 800
2.3 Coil Mode
2.3.1 Coil Mode - overall description
The Coil Mode is similar to gear mode but the position range can be limited in such a
manner that the motor changes direction every time 2 predefined limits (upper and low-
er) are reached. Both limits are fully adjustable. The mode is intended to be used for con-
trolling a wire/cable guider on a winding machine. The guide will follow the position of
the coil driven by a “main motor” like it was mechanically connected by a transmission,
and by using this mode it is possible to steer the wire to the desired position at the coil,
also when the “main motor” changes speed. Since Coil Mode is very similar to Gear
mode, it is recommended that the gear mode setup instructions are followed before us-
ing the additional features described in this section. See Gear Mode, page 19 .
When coiling a thick thread compared to the coil, and the number of windings per layer
are few, it is preferable to stop the traverse motion while one winding is coiled at the top
of the previous winding at the edges. Therefore the edges can be cut off at the positions
given by registers P2 and P3, as shown in the illustration above.
When starting a new coil, you must specify the starting position, and the starting direction
of the MAC motor to achieve repeatability. The starting position, related to the basic
function shown in the illustration above, is given by the value of register P5. The starting
direction is given by the value of register P6, which value must be +1 or -1 for either a
positive or negative direction.
A typical setup could be:
P1 = 10000 Left position limit of basic function
P2 = 12000 Left cut off position
P3 = 58000 Right cut off position
P4 = 60000 Right position limit of basic function
P5 = 12000 Starting position ( at left edge )
P6 = 1 Start traversing right (positive direction)
Positioning at the start position is initiated by setting the analogue input, (AIN), high.
When setting this input low, the MacMotor will resume normal coiling function.
P2
P4
P1
P3
P5
Start position
P6
Start direction
MAC motor
Position
Master encoder
position
Coil mode
MAC motor position versus position of master encoder
Notes:
P1, P2, P3 and P4 can be changed at any time. It is allowed to set P1=P2 and P3 = P4
The position of the motor is always locked to the external encoder like it was a mechanical gear (pulse by pulse).
TT0993GB