VFD68 Variable Frequency Drives
37
0–10 VDC or 4–20 mA P499 Transducer
For applications using a 0–10 VDC or 4–20 mA P499 transducer, you must:
•
change parameter values in Table 31
•
calculate and change P.902 and P.903 (for 0–10 V operation) or P.904 and P.905 (for 4–20 mA operation),
based on the desired operating pressure range and motor speed for the condensing fans on your
application. See
VFD68Dxx Drives Operation Panel
on page 41 and
on page 46 for more information.
Table 31: Settings for Single Input
Setting
4
–
20 mA
0
–
10 V
P. 73
1
1.
For information on parameters, see Table 35 on page 46.
Note:
To enable AI2 (4–20 mA) and disable AI1, connect terminal MRS to terminal SD.
N/A
1 (0–10 V)
Analog Input Terminal
AI2
AI1
Figure 27: Wiring a 4–20 mA Input Signal Transducer
Figure 28: Wiring a 0–10 V Input Signal Transducer
