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VFD68 Variable Frequency Drives
36
Making Input Wiring Connections on VFD68Dxx Drives
Wire the input device to the analog input terminals (Table 26) and make any necessary parameter adjustments.
See
on page 38 and
Parameter Setting Calculations for Motor Speed vs. Pressure
page 49 for more information.
0.5–4.5 VDC Ratiometric P499 Transducer
The default parameter settings (Table 30) on the VFD68 drive are configured to operate a condenser fan motor
on an R410 condensing unit, using a P499RCP-107 or P499RAP-107 ratiometric transducer (Figure 26).
For high-pressure refrigerants other than R410a, you must calculate and change the P.90x parameters. For
medium and low pressure refrigerants, you must determine the proper P499R transducer and then calculate
and change the P.90x parameters.
For more information, see
Table 30: Settings for a 0.5–4.5 VDC Transducer
Setting
0
–
5 V
Analog Input Terminals
IN1 and IN2
Figure 26: Wiring 0.5–4.5 VDC Ratiometric Input Signal Transducers