Woodward TG-13 8516-038 Turbine Mechanical Hydraulics

Description

In the actual PLC debugging process, sometimes there are situations where a software system can theoretically fully meet the process requirements of mechanical equipment, but cannot be put into normal operation during operation. In the system debugging process, in addition to considering software design methods, solutions can also be sought from the following aspects.

1 Scan duration and response time
When designing a control system with a PC, the most important parameter is time. How long does it take for the PC to execute all instructions in the program, and how long does it take for an input signal to pass through the PC before there is an output signal (response time)? Mastering these parameters is undoubtedly very important for designing and debugging a control system.

After the PC starts running, it serially executes programs in memory. We can divide the scanning time into four parts. Common parts, such as clearing time monitors and checking program memory; Data input and output; Execute instructions; Execute peripheral device instructions.
The time monitor is a timer used internally in a PC to measure scanning time, which refers to the total time spent executing the above four parts. The amount of scanning time depends on the purchase of the system, the number of I/O points, the instructions used in the program, and the connection of peripheral devices. After the hardware design of a system is finalized, the scanning time mainly depends on the length of software instructions. It is called the response time, which is variable. For example, after a scanning cycle ends, an input signal is received, After the end of the next scanning cycle, an input signal is received. As soon as the next scanning cycle begins, this input signal becomes effective. At this time, the response time of this input signal is the shortest, which is the sum of the input delay time, scanning cycle time, and output delay time. If an input signal is received at the beginning of the scanning cycle, it will not become effective during the scanning cycle and can only wait until the next scanning cycle to become effective, At this point, the response time of this input signal is the longest, which is the sum of the input delay time and the output delay time. Therefore, the formula for calculating the minimum and maximum response times of a signal is:
Minimum response time=input delay time+scan time+output delay time, maximum response time=delay time+2 × Scan time+output delay time.

TG13 Screw SS, 2400 rpm 8516-038 9904-814
TG13 Screw SS, 2400 rpm B8516-038 9904-815
TG13 Screw SS, 2400 rpm C8516-038 9904-816
TG13 Screw SS, 4000 rpm F8516-039 9904-820
TG13 Screw SS, 4000 rpm G8516-039 9904-821
TG13 Screw SS, 6000 rpm J8516-040 9904-822
TG13 Screw SS, 6000 rpm H8516-040 9904-823
TG13 Lever SS, 2400 rpm B8516-041 9904-824
TG13 Lever SS, 2400 rpm C8516-041 9904-817
TG13 Lever SS, 4000 rpm C8516-042 9904-818
TG13 Lever SS, 4000 rpm D8516-042 9904-819
TG13 Lever SS, 6000 rpm B8516-043 9904-825
TG13 Lever SS, 6000 rpm C8516-043 9904-826
TG13M (motor speed setting) 8516-167
TG17 Screw SS, 2400 rpm 8516-044 9904-800
TG17 Screw SS, 2400 rpm B8516-044 9904-801
TG17 Screw SS, 2400 rpm C8516-044 9904-802
TG17 Screw SS, 4000 rpm 8516-045 9904-803
TG17 Screw SS, 4000 rpm B8516-045 9904-804
TG17 Screw SS, 4000 rpm C8516-045 9904-805
TG17 Screw SS, 6000 rpm C8516-046 9904-806
TG17 Screw SS, 6000 rpm D8516-046 9904-807
TG17 Lever SS, 2400 rpm 8516-047 9904-808
TG17 Lever SS, 2400 rpm A8516-047 9904-809
TG17 Lever SS, 4000 rpm 8516-048 9904-810
TG17 Lever SS, 4000 rpm A8516-048 9904-811
TG17 Lever SS, 6000 rpm 8516-049 9904-812
TG17 Lever SS, 6000 rpm A8516-049 9904-813