Device Control

Anonymous
timer Asked: Apr 19th, 2017

Question Description

1) Construct an equivalent sequence data table for the six steps of the drum‐operated sequencer drawn in Figure 1
2) Answer the following with reference to the sequence file #B3:0 shown in Figure 2.
3) What is the function of the file of a sequencer? What is the function of the mask in the sequencer?
4) When line voltage variations to the PLC power supply are excessive, what can be done to solve the problem?
5) List three potential noise‐generating inductive devices
6) State the basic function of each of the following as part of a process control system:
7) State the purpose of each of the following types of screens associated with HMIs:


Please find attached file






ENGR 4400 Due: Device Control Spring 2017 4/19/2017 (Wednesday) by 11:59PM on Blackboard 1) Construct an equivalent sequence data table for the six steps of the drum‐operated sequencer drawn in Figure 1. Figure 1 – Drum‐operated sequencer for problem 1 2) Answer the following with reference to the sequence file #B3:0 shown in Figure 2. a) Assume that output bit addresses O:2/0 through O:2/15 are controlling associated output pilot lights PL1 through PL16. State the status of each light for steps 1 through 4 b) Which output bit addresses could be masked and which could not? Why or why not? c) State the status of each bit of output word O:2 for step 3 of the sequence cycle. Output O:2 0 0 0 0 0 B3:0 0 0 0 0 0 B3:1 1 1 0 1 1 B3:2 0 0 1 0 0 B3:3 1 0 1 0 1 B3:4 1 1 1 1 0 Figure 2 – Sequencer file for problem 2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 0 0 0 1 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 0 1 1 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 0 Start Step 1 Step 2 Step 3 Step 4 3) What is the function of the file of a sequencer? What is the function of the mask in the sequencer? 4) When line voltage variations to the PLC power supply are excessive, what can be done to solve the problem? 5) List three potential noise‐generating inductive devices. 6) State the basic function of each of the following as part of a process control system: a) Sensors b) Human‐machine interface c) Signal condition d) Actuators e) Controller 7) State the purpose of each of the following types of screens associated with HMIs: a) Trend values b) Operational summary c) Alarm summary

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