SC752A-001-02 single axis servo controller

Description

SC752A-001-02 single axis servo controller

SC752A-001-02 single axis servo controller

Pacific Scientific developed ServoBASIC™ as a subset of the popular GWBASIC by adding motion control commands.. With the ServoBASIC™ language, intelligent motion control became accessible to users with little or no programming experience. First introduced in 1987, ServoBASIC™ has helped engineers do sophisticated motion and machine control in thousands of applications. The second generation ServoBASIC Plus™ was introduced with the SC750 family of drives. The SC750 ServoBASIC Plus™ was the logical progression of the original breakthrough, enhanced through field experience and faster microprocessors.

The third generation of ServoBASIC Plus™ fits on the OC950 option card for the SC900 family of all digital servo drives. Each generation of ServoBASIC™ has expanded flexibility and functionality, increased execution speed, and simplified programming. Throughout each generation we have retained the familiar syntax and program flow of ServoBASIC, so you don’t have to learn a new language to access the enhanced power and flexibility.

In this application, a rotary cut-to-length machine uses a short PacSci ServoBASIC Plus™ program to control independent cutting wheel and material feed axes. This program drives an industrial terminal, such as the PacSci T10. The user is prompted for feed rate in inches per second and desired cut length in inches. The program then computes the required feed roll motor velocity based on feed roller diameter. The cutting wheel motor runs at the computed speed as long as Input 1 is True. If Input 1 is brought False, the motor stops and the user is prompted for a new value.

From the perspective of control theory, the load regulation system of a unit unit is a multivariable coupled system. The CTF coordination method can achieve decoupling of combustion rate and main steam pressure. During the load adjustment process, the impact of changing the combustion rate on the main steam pressure is indirectly compensated by the change of the pressure setting bias value corresponding to the power deviation. The decoupling ability of the CTF method is unidirectional. Therefore, the small range pressure adjustment carried out by the turbine DEH controller within the small power deviation is only one means of adjusting power. Only when the power deviation is large, can the boiler controller adjust the power to make the DEH controller of the steam turbine a true pressure regulator. At this time, the power changes caused by pressure regulation are adjusted by the boiler controller.

In the initial stage of load adjustment, due to the introduction of pressure setting bias signals, the boiler heat storage can be fully utilized. When the load command changes, a certain amount of heat storage can be released or stored, which accelerates the load response speed of the unit. Due to the inevitable lag in the response of the power setting feedforward signal to the load. The introduction of pressure setting bias signals ensures a smooth connection between thermal storage response and combustion rate response, which plays an important role in reducing dynamic deviation during load adjustment. The on-site operation shows that the improvement work of the control system is effective, and the effect of coordinating the control system is relatively ideal.

Recommended spare parts:
6214BZ10120C
6214BZ10121G
621-6300
621-6450
621-6550RC
621-6650R
621-6700
6219928R
621-9928R
621-9933
621-9937
621-9937C
621-9938
6219938R
621-9938R
621-9938RC
621-9940C
621DA343A717
6225BZ10000
6227BZ10200
6227BZ10200D
6230BP10810A
6230BP10830A-A
6231BP10830C-B
6231BP10910
6240BP10411A
6240BP10431A
6240BP10431A-A
6240BP10432A-A
6240BP10811
6240BP10831B-K
6241BP10411A
6241BP10431C-K
6247BP10710
6247BP10730A-B
6248BP10811A
6248BP10831A-A
63025-01C LS5F
6410-001-C-N-N
6410-001-NNN
6410-001-N-N-N