Configuration Parameters Description

Output Modes

2 possible output modes are as follows:

oPulse/Direction

oDirection/Pulse

The Pulse/Direction mode generates 2 signals on the PTO outputs:

oon output 0: pulse which provides the motor operating speed.

oon output 1: direction which provides the motor rotation direction.

The Direction/Pulse mode generates 2 signals on the PTO outputs:

oon output 0: direction which provides the motor rotation direction.

oon output 1: pulse which provides the motor operating speed.

This diagram gives an example of a timing diagram in Pulse/Direction mode:

G-RU-0010391.2.gif-high.gif

 

 

 

Acceleration/Deceleration

Parameter

Value

Description

Acc./Dec. Unit

ms

The Acceleration and the Deceleration expressed in ms.

Hz/ms

The Acceleration and the Deceleration expressed in Hz/ms.

Acc. max.

Dec. max.

ms

Acc./Dec. which cannot be exceeded by any motion command in the application program.

NOTE: If the Acc. max. or Dec. max. is exceeded by a motion command, the motion command will return an error and decelerate to 0 Hz at the Dec. Fast stop rate.

ms The value specifies the lowest value of Acc./Dec. time that can be used.

Hz/ms The value specifies the highest value of Acc./Dec. rate that can be used.

Dec. Fast stop

ms

Defines the value of Deceleration rate used to stop the PTO signal in case of a detected error:

omotion command error

ocommand sequence error

ocontroller leaves RUN mode

oDrive Ready input low

Dec. Fast stop is also triggered when:

oHMI goes into Offline Configuration mode.

oHMI goes to Exit Runtime mode (HMI power-down feature used to ensure all logging to file system is closed properly).

NOTE: The Deceleration time is limited to approximately 6 seconds before just going straight to 0 Hz.

This example shows a possible configuration of Acceleration/Deceleration and Frequency parameters:

Parameter

Value

Units

Acc./Dec. Time

10,000

ms

Start Frequency and Stop Frequency

5,000

Hz

Target Velocity

20,000

Hz

In your application program, using a PTOMoveRelative command with an Acceleration Time of 10,000 ms and a Target Velocity of 20 kHz, then the Target Velocity will be reached after 10,000 ms with an acceleration rate of 1.5 Hz/ms.

The equivalent acceleration rate = (Target Velocity - Start Frequency)/Acc. = (20 kHz-5 kHz)/10000 ms = 1.5 Hz/ms

Frequency

Parameter

Description

Start

Start frequency is the initial frequency value when a motion command begins.

Stop

Stop frequency is the final frequency value before a motion command stops.

Maximum

User-defined frequency which cannot be exceeded by any command in the application program. If a command with a desired velocity above the Maximum Frequency is executed, an error will be returned and the axis will do a Dec. Fast Stop.

Auxiliary Input

Parameter

Description

AUX

The auxiliary input parameter has two possible settings:

oDrive Ready

oNot used

Drive Ready The state of the PTO 0 - AUX physical input (DI2) determines whether the PTO move commands are authorized.

When TRUE = Authorizes the PTO moving commands.

When FALSE = An axis error is triggered and any move ongoing is aborted by a Fast stop.

The input DIS_AuxInput of the PTOSimple function block can be used to disable the drive ready monitoring.

AUX Filter

Filtering value reduces the effect of bounce on the auxiliary input.