Delta DVP-PLC, Applications Manual

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8 Application Instructions API 100-149
DVP-PLC Application Manual 8-62
Example 3:
To speed up the speed to reach the target temperature, we correct the sampling time as 4 seconds
(D12 = K40, D30 = K4,000). The results are shown in the diagram below.
From the diagram below, we see that the overall control time has been shortened as 37 minutes. Therefore, we
find out that modifying the sampling time can speed up the time for reaching the target temperature.
Example 4:
To see if we can reach the target temperature faster, we modify the sampling time frim example 3
into 2 seconds (D12 = K20, D30 = K2,000). The results are shown in the diagram below.
From the diagram below, we see that the sampling time that is too short will cause the control system to become
too sensitive and lead to up and down fluctuations.