Patty2001

Hi Michel. thank you for your advise. We got printer registration with good stability up to speed 190 MPM. Following action was taken. 1. Change the Speed to 8 MBPS and sercos scan time to 0.5 MS 2. Found mechanical back lash on Gearbox and replace with new gearbox 3. Adjust torque limit to +/- 150% 4. Re-tune all axis and get consistant Position Error maximum 80 Micron 5. Run the printer and found actual registration arround +/- 200 to 300 micron (measure manually) Thank you for your support. Patty

Hi Michel, any comment or advise for printer program? Thank you. Patty

PapperPrinter_V1A.ACDHi Michel, attached is our logix files. We will adjust torque to its default (+/- 150%) What do you think if we use Dual Command Servo Loop (Velocity Command and Position Command) instead of Position Loop? Please advise. Thank you. Patty

Hi, I forgot to save or print screen trend, so i will send to you. We will try this unit again on next shutdown during our maintanance day. I will take all data needed. Attached is our logic for your review. For 70% torque, if we used below 50% torque, servo motor is not enough power to turn printer roll so why we increase to 70%. Do you mean that this torque is to high? PrinterLogic.pdf

Hi, Thank you for your reply. Following is things that done. 1. Tune Master axis with position loop configuration, position error auto tune and position gain = 151.778, integral = 5.77, velocity gain = 389.321 2. Tune Slave axis with position loop configuration, velocity and accel feedforward autotune and position gain = 295.67456, velocity gain = 764.57263, velocity feedforward = 100%, accel feedforward = 100% 3. Motor Positiv torque limit is 70%, constant torque = 100% 4. Measure the registration with MAG ratio = 1, registration distance is 1 index to master. 5. Run the machine with 30 MPM, register seeting using MAM instruction (Roll #1 is master, orange colour), roll #2 is red colour, roll #3 is green colour and roll #4 is blue colour. Orange, green and blue is stable with variation arround 1 mm, red Colour is not stable (vary approx 4 mm -randomly). 6. If we increase speed to 80 mpm, during accel, registration is change then after steady speed, registration on roll #3, #4 to #1 is stable with variation 1 mm (oscilate arround 1 mm). 7. transmition from servo motor to printing plate roll and ink duct roll is using driven gear. Plate roll circum is 755 mm and servo roll circum is 500 mm. 8. Rewind tension is very stable. We use two nip rolls, one before printer and another after printer. What do you think that this variation is cause by mechanical isseu or software issue? For servo configuration, what do you think is we use dual command loop (velocity and position command instead of posiiton loop? Thank you for your advise. Patty

Hi, Thank you for your reply. Following is things that done. 1. Tune Master axis with position loop configuration, position error auto tune and position gain = 151.778, integral = 5.77, velocity gain = 389.321 2. Tune Slave axis with position loop configuration, velocity and accel feedforward autotune and position gain = 295.67456, velocity gain = 764.57263, velocity feedforward = 100%, accel feedforward = 100% 3. Motor Positiv torque limit is 70%, constant torque = 100% 4. Measure the registration with MAG ratio = 1, registration distance is 1 index to master. 5. Run the machine with 30 MPM, register seeting using MAM instruction (Roll #1 is master, orange colour), roll #2 is red colour, roll #3 is green colour and roll #4 is blue colour. Orange, green and blue is stable with variation arround 1 mm, red Colour is not stable (vary approx 4 mm -randomly). 6. If we increase speed to 80 mpm, during accel, registration is change then after steady speed, registration on roll #3, #4 to #1 is stable with variation 1 mm (oscilate arround 1 mm). 7. transmition from servo motor to printing plate roll and ink duct roll is using driven gear. Plate roll circum is 755 mm and servo roll circum is 500 mm. 8. Rewind tension is very stable. We use two nip rolls, one before printer and another after printer. What do you think that this variation is cause by mechanical isseu or software issue? For servo configuration, what do you think is we use dual command loop (velocity and position command instead of posiiton loop? Thank you for your advise. Patty

I got it. I got registration distance of printer roll #4 is 1 mm, roll #3 is 0.5 mm, roll #2 is 2.5 mm. I move these position using MAM so it moves to target position. Ratio beteen master - slave is 1.05. The registration is maintain in same position with 55 MPM if I increase line speed to 65 MPM, registration of each rolls start to change randomly between 1 - 2 mm. Any idea? Thank you.

Do you mean that if registration distance let say 0.05 mm so will increase the slave position with slave actual position is 25 mm so will move to 25+0.05 mm? Also after we change this new slave position, we need to lock to master position. What do you think if after registration change on slave position then use MAPC to lock slave position so slave_new_position = master_position + registration_mm ?

Do you mean that if registration distance is 0.05 mm so will increase the slave position let say slave actual position is 100 mm so if will move to 25+0.05 mm? Also after we change this new slave position, we need to look to master position. What do you think if after registration change on slave position then use MAPC to lock slave position so slave_new_position = master_position + registration_mm ?

Hi All.... I have paper printer machine 4 colour using 4 axis of MPL servo motor, kinetix 6000 and compactlogix sercos motion controller. Machine speed is 150 MPM. Printer roll #1 is master and roll #2, #3, #4 as a slave. I use MAG on roll 2 -4 to synch to master speed and position. I have a registration problem ( can't control registration) so it moves. I plan to replace MAG with MAPC. I need advise or comment from any one in this forum.... Thank you for advise. Patty

Hi all, I have a problem with kinetix 6000 problem, when we first time power up (without any load connected) and experience E75 error (overvoltage). I try to read Kinetix 6000 user manual but not much information provided. Anyone knows how to solve this problem? Please advise. Thank you very much. Patty

Dear All, I have 2361-EATJB-74M-14MCA 1395 series dc drive with 2500 amp amp, armature voltage 700 VDC, 2000 HP, incoming volateg 460 VAC, 3 phase. I want to upgrade this drive, i can't 2000 hp on Powerflex DC selection guide. COuld you please help us to findout the replacement of this drive. Thank you.

What I am asking is combination between Speed and Torque as describe in Parameter 241 (Set the P241 to 3 for Min Speed / Torque COntrol). We can do this method easly in Powerflex 755, 700S, VC or AB 1395/1397 DC Drive. Parameter 241 [spd Trq Mode Sel] is used to choose whether the drive operates as a speed regulator, a torque regulator, or a combination of the two. It has 5 selection of speed/torque regulator as describes. Zero torque current is allowed when set to “0.” When set to a “1,” the drive/motor is operated in speed mode. The torque command changes as needed to maintain the desired speed. A value of “2” selects torque mode. In torque regulation mode, the drive controls the desired motor torque. The motor speed will be a result of the torque command and load present at the motor shaft. Min and Max mode are selected by values 3 and 4, respectively. These two modes offer a combination of speed and torque operation. The algebraic minimum or maximum of speed/torque will be the operating point. The drive will automatically switch from speed to torque mode (or from torque to speed) based on the dynamics of the motor/load. The Min mode is typically used with positive torque and forward speed operation, the minimum of the two being closest to zero. The Max mode is opposite, typically used with reverse speed and negative torque, the maximum being the least negative (closest to zero). Sum mode is selected when set to “5.” This mode allows an external torque command to be added to the speed regulator output. My problem is I can't write the torque (P39) Via DataLink (DPI Port 5) while P241 is set to 3, 4, or 5, I can only write to P39 if using analog input, then we can control Speed/Torque. Powerflex DC Torque Speed Control Diagram BLock.pdf

I have application with Controllogix connected to PowerflexDC drive through 20-COMM-E (ethernet connection DPI - P5). I want to configure the drive as combination between speed and torque (P241=3 SLAT Min Speed/Torque). I will send the speed reference and torque reference using DPI Port 5. How to select the speed source and torque soruce in same time? DPI P5 select on P1327 is only one choice (speed or torque), then I choose Speed RefA I can't wite P39 (Torque Ref) using data link -- P611 Data Link A2, how to write the P39? My experience using Powerflex 700S or PF 700 VC is more easier, we can send the speed source and torque source in the same time. I need some knowledge base or information from anyone who experience with this application. Thanks/ Osias

Hi... I want to add AJ71UC24 to A2A CPU chassis and doing programming of modbus register. I used Melsoft GX Developer software version 8. How to do this programming? Thank you for help, James