Configuration Parameters Description
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:
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
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. |
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. |