kratmel
MVP 2023-
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Everything posted by kratmel
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In Communication and OS you can check OS version. If it is not updated, Visilogic go to OS update mode and load needed SW to PLC. If this process does not start or fails, please send message to support@unitronics.com
- 1 reply
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- v350
- v350-35-xxxx
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(and 2 more)
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PID question
kratmel replied to Knight's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
In standard multi-pump control used one PID loop for one pump. All other pumps works in start-stop mode. Some info about multi-pump configuration ATV610_Multi-pump_en.pdf Schneider-VW3A3502-Manual.pdf you can see standard multi-pump application setup. -
Implementing safety relay with unitronics servo motor & drive
kratmel replied to Hoops123's topic in Everything Servo!
I try to find some info about STO, SS1, SS2 safety function in standard servodrive. Maybe it is useful AN00206-Implementing_safety_functions_on_ABB_servo_drives_Rev_G_EN.pdf And some info for forum users about STO, SS1, SS2 safety function TB-Understanding Servo Safety Funcionality and SIL ratings.pdf -
Implementing safety relay with unitronics servo motor & drive
kratmel replied to Hoops123's topic in Everything Servo!
Unfortunately, you did not say anything about the application itself, for which the servo motor is used. There are probably safety requirements and standards for this application. Usually, the standards are based on the current state of technology development. Special safety inputs for converters have appeared quite recently and have accordingly been added to existing standards as additions. On the one hand, you want to stop the engine quickly, and on the other hand, you say that the fastest way to do this is to turn off the power. So I think only following the safety standard is correct. If it involves turning off the power supply of the power unit, then it should be done that way. The frequency of turning on and off the power will not be high anyway. -
Implementing safety relay with unitronics servo motor & drive
kratmel replied to Hoops123's topic in Everything Servo!
Paying attention to servo motors, we must take into account that they are usually used in positioning mode. This mode involves setting the final coordinate in advance. That is, the activation of the safety system must change the task of the servo drive so that it stops as soon as possible. Disconnecting the motor from the servo drive via safety relay is generally unacceptable. This will probably cause the driver to crash. Disconnecting power from the servo driver will not provide the desired instant stop. Therefore, after studying manual for the Unitronics servo driver, I came to the conclusion that the most effective in your case is the use of discrete input signals P-OT and N-OT. This two signal can be selected via Parameters (p.64-65). This two signal can be used as a command for an unconditional stop. Using the zero clamp settings to work out the P-OT and N-OT mode, you can create safe application. Additionally, you can add Unitronics motor with a brake and create a configuration for guaranteed holding of the motor in the stop position. Safety relay has two ot more contact - that can be used for generate P-OT and N-OT signal simultaneously. For additional information please contat support@unitronics.com. P.S. I must draw your attention to the need for careful study of legal norms - national standards that regulate the operation of the safety system for the equipment where the operation of the servo drive is planned. I have studied these documents for many types of equipment, so all your steps and schematics should follow these requirements. -
DINT in compare over ethernet IP won't set coil
kratmel replied to taygroebs's topic in UniLogic Software
If other parts of the code of similar content without the network variable work, then I think that it is just that variable that is pulsating. It is updated very quickly and the condition that should be fulfilled simply "does not see" it. I suggest you "remember" this variable via SET Coil (Part There is Direct Coil now) and see if it works. -
DINT in compare over ethernet IP won't set coil
kratmel replied to taygroebs's topic in UniLogic Software
Is it CPU-for-Panel plugged into the back of a UniStream® HMI panel? -
DINT in compare over ethernet IP won't set coil
kratmel replied to taygroebs's topic in UniLogic Software
Please post used Unisream hardware. Software Version needed also. -
DINT in compare over ethernet IP won't set coil
kratmel replied to taygroebs's topic in UniLogic Software
It is possible Tag is used for Button on screen - it can not be active in ladder. Please use Find option for this Tag -
Today's lighthearted relief...add yours as necessary.
kratmel replied to Ausman's topic in The Lounge
While browsing the Internet, I came across one of the forums on the topic of play sets for children and teenagers of different years of production. This 1950 set is definitely unique... link with some info -
To deactivate the variable - the Disable view option bit present in the properties, for the button - the Disable mode option bit present in the properties. You can set this bit by pressing a button and starting a timer to reset this bit. You can also use the Hide option bit for the button - touch is not possible if there is no button on the screen.
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V570 to EX-A1?
kratmel replied to gerard339's topic in Vision & Samba PLC + HMI Controllers & VisiLogic Software
EX-A1.pdf Page 4 -
I think you have little choice. Unfortunately, the equipment you have is not up to the task as stated above by many contributors. Therefore, you need to add one more delta servo to the circuit and apply the proposed application. Or look for a set of equipment from well-known manufacturers with a ready-made application - and this can cost a lot of money.
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In fact, this task is an example similar to the rotary knife or high speed labeling. I doubt you will be able to achieve the accuracy you want with used hardware and software. In such systems, not only speed PID is needed, but also position PID. In my opinion, you should consider mechanical synchronization between the large print shaft and the chain conveyor in your system. Accordingly, their speeds were the same, and the stop bar on the chain exactly periodically coincided with the start of printing on the cylinder. By the way, what type of servo driver is used for the large shaft? p.s. Please read some info in pdfs... PTiAN-03_Rotary Knife with the PTi210.pdf PTiAN-04_High Speed Labeling with the PTi210.pdf a-guide-to-motion-control-technology-systems-programming-iss2x-0704-0007-02x.pdf