Johnson Controls VFD66 Series Quick Start Commissioning Manual page 2

Operating the VFD66 Control with a P35 Pressure Transducer or Any 0 to 5 VDC Signal
VFD66xxx-1 Setup

J2 = On, J3 = Off, and J7 = On.

P1 = minimum speed.

P2 = minimum speed maintain (stop or hold).
Operating the VFD66 Control with a C450 Control Module or Any 0 to 10 VDC Signal
VFD66xxx-1 Setup

J2 = On, J3 = Off, and J7 = Off.
Operating the VFD66 Control with a Ratiometric P499 Series Electronic Pressure Transducer
VFD66xxx-1 Setup

J2 = Off, J3 = On or Off, and J7 = On or Off.

P1 = setpoint.

P2 = proportional band.
2 VFD66 Series Condenser Fan Speed Controls Quick Start Commissioning Guide
VFD66xxx-2 Setup

Set parameter 05 to Std (standard input mode;
factory default setting).

Set parameter 65 to 5V (factory default setting).

Set parameter 67 for the desired minimum speed
(factory default setting is 0 Hz).

Set parameter 64 for either stop (factory default
setting; motor stops below the minimum speed
setting) or HOLd (motor idles), to obtain the
desired action at the minimum speed point.
VFD66xxx-2 Setup

Set parameter 05 to Std (factory default setting).

Set parameter 65 to 10V.

Set parameter 67 for the desired minimum speed
(factory default setting is 0 Hz).

Set parameter 64 for either stop (factory default
setting) or HOLd, to obtain the desired action at
the minimum speed point.
VFD66xxx-2 Setup

Set parameter 05 to EPt (electronic pressure
transducer input mode).

Set parameter 65 to 5V (factory default setting) for
ratiometric sensors; set parameter 65 to 10V for
0 to 10 VDC sensors.

Set parameter 61 for the desired setpoint. This
setting is calculated using the following equation:
(
Desired Pressure Setpoint
10 + 80 x
Max. Pressure Rating of Sensor
Example: If a 0 to 500 psig sensor is used and the
desired setpoint is 275 psig, then the setting for
parameter 61 is 10 + (80 x 275/500) or 54.

Set parameter 62 for the desired proportional band
of the control. This setting is calculated using the
following equation:
[
(Pressure Setpoint – Min. Req. Pressure)
80 x
Max. Pressure Rating of Sensor
Example: If a 0 to 750 psig sensor with a setpoint
of 500 psig and a minimum required pressure of
410 psig is used, then the setting for parameter 62
is 80 x [(500 – 410)/750] or 9.6.
)
]