Aerotech UNIDEX 600 Series, Руководство пользователя

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U600 User’s Guide Setup Wizard
Version 1.4
Aerotech, Inc.
12-15
Lines/Revolution (Lines/Electrical Cycle)
The number of lines for the encoder must be specified as an integer. This field is NOT
used for re-scaling the PGAIN axis parameter (use the Number of Lines field for that
purpose).
Rotary Encoders
For rotary encoders enter the number of lines per revolution of the encoder (after x4
multiplication). For example, for a 1000 line encoder, enter 4000.
Linear Encoders
For brushless motors with linear encoders, enter the number of lines equeal to the
specified number of electrical cycles (number of Pole Pairs) after x4 multiplication is
done by the controller. For example, 1000 lines per Number of Pole Pairs would be
entered as 4000. Assume there were 123.33333 counts per electrical cycle on a linear
motor. Set the lines/revolution to 370 and Pole Pairs to 3 (370 =123.33333 * 3).
Number of Pole Pairs
The number of Pole Pairs is the number of permanent magnetic poles, expressed as pole
pairs, that an Aerotech motor has.
Commutation Offset
The commutation offset indicates the number of electrical degrees to align the absolute
rotor reference (provided by the commutation channel) to the rotor of the motor. The
offset is entered as counts ratioed to 1024 and may be positive or negative. A 360° offset
is equal to 1024.
A 10° offset may be calculated as:
10 / 360 * 1024 = 28
Bounded by Software Limits
The Bounded by Software Limits field within the Axis Configuration Wizard is used to
specify if software limits are to be activated for the axis (true or false may be selected).
The software limits are defined by the CWEOT and CCWEOT axis parameters.
12.4.6.4. Resolver Configuration (or Inductosyn)
Channel Number
The channel number specifies the channel number that the encoder feedback device will
be read from for this axis, as well as the specific I/O (CW/CCW/Home Limits, encoder
fault, drive fault, Auxiliary (Mode) output, and the drive enable).
Encoder Channel Assignments
Channels 1 through 4 are on the UNIDEX 600 card, channels 5 through 8 are on the
4EN-PC card configured as Board 1, channels 9 through 12 are on the 4EN-PC card
configured as Board 2, channels 13 through 16 are on the 4EN-PC card configured as
Board 3.
Resolution
The resolution field specifies the machine steps per electrical cycle of the resolver (or
inductosyn). This is entered as 10, 12, 14, or 16 (bits), which represent 1024, 4096,
16,384, and 65,536 machine counts per electrical cycle of the feedback device,
respectively.