Emerson Epsilon EP Drive 400518-01 Manual de instalación descargar pdf (Pagina 175)

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Quick Start for an FM-4 Module

Now set up the parameters in the Distance group on the User Units view. The Tab key is used to easily jump through the

available parameters. After entering data in a field, press the Tab key to move to the next parameter. The parameters you

must fill out are as follows:

Units Name – Enter the character string you wish to use for your distance units.

Decimal Places – Enter the number of digits after the decimal place you wish to use in all distance parameters throughout

the software (i.e. index distances/positions, PLS On/Off points). Use the Up/down arrows to increase or decrease the number

of digits.

Distance Units Scaling – Enter the number of User Units the motor/load travels for each revolution of the motor. You must

enter the numerator and the denominator for this scaling factor.

Note

User Units may affect end motor speed and could cause trajectory faults.

Because of internal math in the FM-4, some user unit combinations may cause module or drive trajectory faults. The

maximum motor velocity allowed by the drive is detailed under the distance section of the User Units View and is labeled

“User Unit Limited Speed”. When the user unit setup is altered in such a way that the maximum motor speed allowed by the

drive is less than the maximum speed allowed by the chosen motor, the readout of maximum motor speed allowed by the

drive changes to have a red background. If a configuration is downloaded to the FM-4 with a red background on the “User

Unit Limited Speed”, the drive will obtain a trajectory fault at speeds near this velocity. To alleviate this issue, simply remove

decimal places from the user units, and/or change the characteristic distance (numerator) of the scaling parameters to be a

smaller number. The red background indicating module trajectory faults will go away when the user unit setup is scaled for

a realistic accuracy based on the encoder counts per revolution.

Master Units View

Use this view to setup parameters for synchronized motion.

Position View

The Settings group on this view sets the Define Home Position.

Figure 100: Position View

To set up Following Error Limit and Software Travel Limits, fill out the following parameters in the Limits Group:

Enable Following Error – This check box enables (when selected) and disables the following error fault capability. If

selected, a following error fault is generated whenever following error exceeds the value entered in the parameter text box.

If clear, a following error fault will never be generated.

Following Error Limit – If Following Error meets or exceeds this value, a Following Error Fault will be generated.

Enable Software Travel Limits - This check box enables (when selected) and disables the software travel limits. If enabled,

the software travel limits are not active unless the Absolute Position Valid Source is active. (For more information please see

Software Travel Limits information in the Setting Up Parameters section on page 47)

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Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 175