Toshiba ASD 9 Series Manual page 13

Example: Invert the Response Slope Using an External Switch.
Use the S3 terminal as a PID normal/inverse slope characteristic switching signal input terminal.
Parameter
Parameter Name
Number
F117 Input Terminal 7 (S3)
This figure illustrates the PID feedback value (maximum frequency: 80 Hz) to the V/I terminal using
the S3 terminal to switch between the positive and negative response slope. When the switch to S3 is
open, the feedback slope is normal, and when the switch to S3 is closed, the slope is inverted.
Figure 8. Feedback response slope polarity switching with S3.
External analog set point
DC: 0 – 10 V
Feedback signal
DC: 4 – 20 mA
(Set SW 301 to Current)
Figure 9. External switch on S3.
External discrete input to S3
Table 1. Parameter settings for slope polarity switching output.
Parameter
Number
F117 Input Terminal Function - S3
F201 V/I Input Point 1 Setting
F202 V/I Input Point 1 Frequency
F203 V/I Input Point 2 Setting
F204 V/I Input Point 2 Frequency
PID Control Manual
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Selectable Functions
80 Hz
0 Hz
4 mA
20%
S3
CC
V/I
V/I Feedback
IICC
Parameter Name
Range
0 – 131 54 - PID Positive/Negative Slope Switching
Open between S3 and CC
Closed between S3 and CC
20 mA
100%
Setting
Setting
54
20
0
100
80
5