Emerson Epsilon EP Drive 400518-01 Instrukcja Instalacji Pobierz pdf (Strona 56)

Epsilon EP-P Drive and FM-3/4 Module Reference Manual

Master Position Setup Group

Define Home Position

Define Home Position is the value that the Master Position Feedback will be set to when the MasterAxis.DefineHome

destination is activated. After the MasterAxis.DefineHome has been activated, the MasterAxis.AbsolutePosnValid source

will activate.

Rotary Rollover Check Box

If selected, the rotary rollover feature for the Master Axis will be enabled.

Rotary Rollover

If enabled, the Master Position will rollover to zero at the value specified here. As the master encoder counts up, the master

position feedback will increase until it reaches the Rotary Rollover value and then reset to zero and continue to count up. If

rotating in the negative direction, the master position feedback will decrease until it reaches zero, and then start over at the

Rotary Rollover value.

Master Distance Units

The parameters in this group are used to establish the scaling of the master axis into user units.

Units Name

This is a text string up to 12 characters that will be used to define the units of distance traveled by the master axis for incoming

synchronization signals.

Decimal Places

The number of decimal places set in this parameter determines the number of digits after the decimal point used in all distance

and position parameters used in synchronized motion throughout the software. Using a high number of decimal places will

improve position resolution, but will also limit the maximum position. You can select from zero to six decimal places of

programming resolution.

Scaling

The scaling factor is defined as MasterAxis.CharacteristicDistance/MasterAxis.Counts. The numerator (top value of the

scaling fraction) is the Characteristic Distance. The denominator (bottom value of the scaling fraction) is the # of Counts. The

Characteristic Distance is the number of Master Distance Units that will be traveled per number of counts in the bottom of

the fraction. The Counts parameter is the number of incoming pulses it takes to travel the characteristic distance.

Master Velocity Units

Decimal Places

Decimal Places determines the number of decimal places to be used in the velocity parameter for all synchronized motion.

Master Acceleration Units

Decimal Places

The number of decimal places set in this parameter determines the number of digits after the decimal point used in all real-

time accel/decel parameters used for synchronized motion throughout the software. Using a high number of decimal places

will improve accel/decel resolution, but will also limit the maximum accel/decel rate. You can select from zero to six decimal

places of programming resolution.

Master Position Filter

The master position filter is designed for applications where the master encoder input requires smoothing due to low

resolution or high gain. These applications include low speed masters, low resolution master encoders, and large follower to

master gear ratios.

Filters inherently introduce phase shift (or delay) in the followers response to the master position, velocity and acceleration.

The device provides Feedforward compensation to correct for these delays introduced by the filter.

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Emerson Epsilon EP Drive 400518-01 Instrukcja Instalacji Strona 56

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