8440-1546 Woodward Generator Set Controller

Description

Fault display

① can be designed so that each fault point has a signal representation. The advantage is that it is intuitive and easy to check, but the disadvantage is that the program is complex and the output unit occupies a large amount, resulting in a large investment;

② During design, all fault points can also be represented by a single signal. The advantage is cost saving, reducing the occupation of output units, but the disadvantage is that the specific fault circuit cannot be directly determined;

③ During design, a group of similar fault points can also be represented as an output signal. The above three schemes have their own advantages and disadvantages. When conditions permit and each circuit is important, it is necessary to quickly and accurately determine the fault point. It is better to use the first scheme;

In general, it is better to use the third solution. Due to the fault classification alarm display, the nature of the fault can be directly determined, and corresponding measures can be taken immediately to deal with the impact on the equipment or industrial process. At the same time, combined with other phenomena, factors, another group or several sets of alarm conditions, specific fault points can be divided from this category. The increase in internal programs, external output points, and wiring of the entire PLC is not significant, and the performance and price are relatively high.

Troubleshooting input and output faults. Generally, PLCs have LED indicator lights to help check if the fault is caused by external devices. Whether in simulation debugging or practical applications, if a certain circuit of the system cannot operate as required, the first step is to check whether the electrical contact point of the PLC input switch is reliable (usually by checking the input LED indicator light or directly measuring the input end). If the input signal cannot be transmitted to the PLC, the corresponding external circuit of the input should be checked; If the input signal has been collected, then check if the PLC has corresponding output indicators. If not, it is an internal program problem or an output LED indicator light problem; If the output signal is confirmed to be sent, the external output circuit should be checked (from the PLC output to the back). In the output circuit, if the PLC output point is stuck internally due to a short circuit or other reasons, simply switch its wiring to another reserved empty wiring point and modify the corresponding program to change the original output label to a new address number.

Although PLC is suitable for industrial sites, attention should also be paid to avoiding direct vibration and impact, direct sunlight, oil mist, rain, etc. during use; Do not apply near corrosive gases, excessive dust, or heating elements; Avoid conductive debris entering the controller.

NGPS-11
3E-032085
NI0C-01
ACH550-PDR-04A1-4
TB417
ACS601-0011-2-S
MSOC/474M142160
6014BZ10100
6227BZ10200
YB560101-SV
10E15722HV
3563-AHA/2
C485D40-2LF
YB560103
OETL-NF600ASW
1326AB-B410G-2-L
SAFT-163-I0C
EHN250C-1