VFD68 Variable Frequency Drives (230 or 460 VAC)
23
0–10 VDC P499 Transducer
For applications using a 0
–
10 VDC P499V transducer, you must:
•
adjust the parameter values that are listed in Table 17 on page 23
•
ensure that the AI2 mode switch (Figure 11 on page 19) is set correctly
•
calculate and change
C x
parameters based on the desired operating pressure range for the condensing
fans on your application
The VFD68 has the ability to control motor speed using the higher input signal value of two
voltage
inputs
when you configure AI1 and AI2 as the same model transducer. For the
high-input signal select
application
with two transducers (Figure 14 or Figure 15), use the parameter values in Table 17 and see Figure 17 on
page 26
VFD68Bxx and VFD68Cxx Drive Basic and Advanced Parameters
Table 17: Settings for Single or Dual 0–10 VDC Transducers
Setting
Single Transducer
Dual Transducer, High-Signal Select
P. 73
1
1.
For information on parameters, see Table 19 on page 27.
0 (0–10 V)
0 (0–10 V)
P.266
1 (voltage input)
1 (voltage input)
P.267
2 (0–10 V)
2 (0–10 V)
Analog Input Terminal
AI1 or AI2
AI1 and AI2
AI2 Mode Switch
2
2.
V
V
IMPORTANT:
If using two voltage input devices, both devices must be identical.
Do not
use input
devices with different ranges and operating characteristics.
Figure 15: Wiring 0–10 VDC Input Signal Transducers
