TECO SG2-12HT-D - Chapter 6: FBD Block Diagram Programming

Chapter 5 Relay Ladder Logic Programming 124
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Illustrate diagram for Kp, Ti , Td variable setting value to SV
1, Td and Ti setting value is large. Kp setting value is small.
2, Td and Ti setting value is small.
3, Kp setting value is large.
A micro sampling time T
S
setting, will consume lots of resource of controller and variation value won’t have
sufficient change, A huge sampling time T
S
setting, expect stable system and a slow response.
Variable reference chart:
Control type Application field K
P
(%) T
I
(*0.1s) T
D
(*0.01s) T
S
(*0.01s)
Fast temperature
variation
Small space and capacity
625 30 100 50
Slow Temperature
variation
Large space and capacity
1250 120 800 100
Slow Pressure Slow pressure variation 1500 5 400 100
Fast Pressure Fast pressure variation 3750 2 1000 100
K
P
, T
I
, T
D
is adjustable after observe the application field.
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