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Jose Garcia

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Jose Garcia


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RE: Powerflex 525 with PWM

Posted By Jose Garcia Apr 05, 2023 04:28:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
The PowerFlex 525 drive comes with a digital input built into the terminal block (terminal 7) able to read pulse train signals up to 100 kHz at 24V. PWM (Pulse Width Modulation) is a general term that refers to the way that most of the AC typical variable speed drives operate at the inverter section ...

RE: Powerflex 755 Speed Trim Follower

Posted By Jose Garcia Mar 03, 2023 04:37:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Thanks Nelson for your comments. Apologies, one of the documents referenced is internal and company policy does not allow to share this content within this public communication channel. I understand your concerns as well. I would like to suggest that maybe the next action to make progress ...

RE: Powerflex 755 Speed Trim Follower

Posted By Jose Garcia Feb 24, 2023 10:11:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
EDIT: removed external formatting -FL Hello, there is some conceptual guidance on how to apply a Speed Trim Follower scheme with AC drives via the following document: https://literature.rockwellautomation.com/idc/groups/literature/documents/wp/drives-wp001_-en-p.pdf This other technote includes ...

RE: Protection for external brake resistor

Posted By Jose Garcia Feb 14, 2023 09:07:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
For externally mounted braking resistors, the recommendation is to protect the drive from resistor temperature rise. This is done typically by a normally closed contact from an internal thermostat in the resistor. This signal is often used to open a contactor upstream the drive and remove the supply. ...

RE: Powerflex 525 load speed fluctuations

Posted By Jose Garcia Feb 02, 2023 10:17:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
EDIT: updated broken link to the first mentioned technote -FL Hello, There are many options to be addressed when handling high inertia loads. Many generic considerations are mentioned on PowerFlex 7 series, PowerFlex 40 1336S & 1336F: Guide line :to handle a high-inertia load Dynamic braking ...

RE: PF 755 - Rod Torque measurement unestable

Posted By Jose Garcia Dec 21, 2022 05:29:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, Thanks for sharing this problem. It looks as if the drive is being used within a Pump Jack oil well application. I am hoping this thread could be visible by other Engineers that have used the PowerFlex 755 drive on this particular type of application, very common I believe in countries ...

RE: Load Sharing in DC Powerflex

Posted By Jose Garcia Nov 15, 2022 07:28:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, one of the most common load sharing techniques is the speed leader/torque follower described previously. That principle is also applicable to the PowerFlex DC drives. There is further detailed information available from Load Sharing between PowerFlex DC Drives where key parameter settings ...

RE: Powerflex 525 and 753 two sets of variable speeds

Posted By Jose Garcia Nov 14, 2022 08:18:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, you are very welcome. There are some technical notes available from the Rockwell Knowledgebase that could help with the task ahead. For example for the PowerFlex 753 drive PowerFlex 753: Configuring 2 preset speeds using 1 Digital input can be useful. For the PowerFlex 525 drive PowerFlex ...

RE: Powerflex Drives Specifications

Posted By Jose Garcia Sep 27, 2022 04:59:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
No problem, you are welcome. I agree with your way of thinking. With an encoder feedback, the torque loop inside the PowerFlex 750 class drive should be quick enough to acknowledge faster variations of the torque signal. Without an encoder feedback, the torque loop may miss signals above the ...

RE: Powerflex Drives Specifications

Posted By Jose Garcia Sep 23, 2022 07:44:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, think of bandwidth in this context as how quick the internal Torque Loop inside the drive can work. The higher the bandwidth, the faster the torque loop can react to torque variations. The faster the torque loop is, the more accurate the torque regulation will be as well. The speed and torque ...

RE: Meaning of Displayed current value on VFD

Posted By Jose Garcia Jul 04, 2022 10:23:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, d003[Output Current] is the total output current present at terminals T1, T2 and T3 of the drive, as measured and calculated by the internal drive circuitry. The total output current can be defined as: where Torque Current is the amount of current in phase with the fundamental voltage component ...

RE: Adjust IP in 22-comm-e with power flex 400P

Posted By Jose Garcia Jul 04, 2022 07:44:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, Parameter number 2[BOOTP] of the 22-COMM-E Ethernet adapter should be set to 1 = Enabled to allow DHPC/BOOT software to detect the hardware, whose IP address needs to be configured. To access parameters in the 22-COMM-E adapter, an external HIM, or CCW software + 1203-USB serial communications ...

RE: Isolation between Analog common and Digital common

Posted By Jose Garcia Jun 17, 2022 10:31:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Apologies for the delay in replying back. Although the technical question from your end is clearly understood, please note that there is some context than need to be taking into account before addressing this. The current range of PowerFlex 40 drives comply with UL 508C (US Standard for Power ...

RE: Current delivering ability of pin

Posted By Jose Garcia Jun 14, 2022 07:36:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Terminal 16 (Analog output) on the PowerFlex 40 when configured for a 0-10V signal would be able to deliver up to 10 mA for a load of 1 kilo Ohm ------------------------------ Jose Garcia Remote Support ------------------------------

RE: Isolation between Analog common and Digital common

Posted By Jose Garcia May 25, 2022 07:54:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, I am trying to find out if there is any data published on isolation levels in KV between drive terminals. In the meantime, are there any references that could be shared on the potential suitable DC-DC converters circuits that are likely to be used on this challenging application? ---- ...

RE: E91 Ethernet/IP User Watchdog Timeout

Posted By Jose Garcia May 12, 2022 05:25:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Could it be possible maybe that the PLC program is not executing certain instructions within the timeframe that the Kinetix 300 should be expecting and therefore the process being somehow disrupted...? Do you think this problem could be still observed even with the original sample code, without any ...

RE: PF750 Drives | Dual Loop Control

Posted By Jose Garcia Apr 22, 2022 05:03:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Thanks for the clarification. As other colleagues have pointed out already on this thread, is possible to use the embedded "Point to Point" positioning feature available in the PowerFlex 755 drive. The Point to Point feature allows for Dual loop regulation if convenient. Some applications that ...

RE: PF750 Drives | Dual Loop Control

Posted By Jose Garcia Apr 20, 2022 05:12:00 AM
Found In Egroup: Drives, Motion Control and Low Voltage Products \ view thread
Hello, Chapter 6 of the publication below describes in more detail how to set up this specific configuration https://literature.rockwellautomation.com/idc/groups/literature/documents/rm/750-rm002_-en-p.pdf According to this technical note https://rockwellautomation.custhelp.com/app/answers/a ...