BENTLY 176449-04 Pulse input card

BW is the range of frequencies where the motor can adequately follow the command. As the BW is increased, the system response is increased. A higher frequency command is a faster changing command. Think of feedback error as a command. Higher BW systems respond to feedback disturbances faster. How do you calculate BW? BW[Hz] = KVP * Kteff / (6.28 * Jt[Lb-in-s2 ]) Kteff[Lb-in/A] = Ke[V/krpm] * 0.08454 * 0.866

There are two ways to calculate total system Inertia. 

1 Measure all the mechanical parts separately. Using a software sizing package similar to “Optimizer”, enter all the mechanical data. The sizing package should have a data point for total reflected system inertia. 2. During installation of the prototype machine, when you are going to test the drive anyway, perform the standard motor/drive setup. You need to be able to create stable motor motion to perform this test. If the motor is unstable, read through the tuning section to determine how to make it stable. Setup an index move. The move has to be aggressive to create substantial accel current in order to increase signal to noise ratio. Run the index move and use the softscope to monitor velocity feedback and current feedback.

decel current, traverse max velocity

 and time to accel to traverse velocity. Factor out friction and load force from the current Inertial Current[A] = accel current - traverse current note: polarity matters or Inertial Current[A] = (accel current - decel current)/2 note: polarity matters Inertial Current[A] = (3.8*3 + 3.2*3)/2 = 10.5[A] Inertial Torque[Lb-in] = Inertial Current[A] * Kteff[Lb-in/A] Inertial Torque[Lb-in] = 10.5*2.28 = 23.94[Lb-in]

                                                                        

Brand display

 ABB、GE/FUANC、FOXBORO、TRICONEX 、BENTLY、A-B、EMERSON 、MOTOROLA、XYVOM、HONEYWELL 、REXROTH、KUKA、NI、DEIF、Yokogawa、WOODWARD、Reliance Electric、SCHNEIDER 、MOOG、PROSOFT、KOLLMORGEN、ICS TRIPLEX、HIMA

This article from the temporal Ming sheng automation equipment co., LTD., reproduced please attach this link: http://www.stockdcs.com/