Johnson Controls VFD66 Series, Product/Technical Bulletin

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Table 9: Electronic Pressure Transducer Input Mode
J2 Jumper
Position J3 Jumper
Position P1:
Setpoint Range P2:
Proportional
Band Pressure
Range 0-5 VDC Pressure
Transducer Product
Code Numbers
1
Removed Installed 16-44 psi
Removed Removed 40-70 psi
5-20 psi 0-100 psi
P499RAP-101K
P499RCP-101K
Removed Installed 32-88 psi
Removed Removed 80-140 psi
10-40 psi 0-200 psi
P499RAP-102K
Removed Installed 80-220 psi
Removed Removed 200-350 psi
25-100 psi 0-500 psi P499RAP-105K
P499RCP-105K
Removed Installed 120-330 psi
Removed Removed 300-525 psi
38-150 psi 0-750 psi
P499RAP-107K
P499RCP-107K
Removed Installed 16-44% of range
Removed Removed 40-70% of range
5-20% of range Unknown Other
1. Product code numbers ending in K are kit models that include a single P499 transducer model and a WHA-PKD3-200C
wiring harness. To order a single P499 transducer model without a WHA-PKD3-200C wiring harness, replace the K with a
C at the end of the P499 product code number. See Table 13 for more information on P499 models and wiring harnesses.
Operation
The VFD66 controls feature two diagnostic LEDs:
POWER and ALARM. (See Figure 14.)
The POWER LED illuminates when power is applied to
the VFD66 controls. When power is disconnected from
the VFD66 controls, this LED remains illuminated
while the power supply capacitors discharge. If the
motor is not running when power is removed, the LED
may remain illuminated for up to 5 minutes, while the
capacitors discharge.
The ALARM LED indicates fault conditions and
provides diagnostic information. Constant illumination
of this LED indicates that the motor is overloaded and
the VFD66 control shuts down the motor.
When the ALARM LED flashes, the VFD66 control has
shut down the motor. The number of times the ALARM
LED flashes indicates the cause of the fault.
(See
Troubleshooting. )
POWER
LED
(Green)
ALARM
LED
(Red)
Figure 14: LED Display
Troubleshooting
If the VFD66 control provides reduced output voltage
and frequency, see
Undervoltage Operation. If the
VFD66 control operates in another unexpected
manner, see
Undervoltage Operation.
Undervoltage Operation
If the supply voltage drops below 60% of nominal, the
VFD66 control stops the motor until the voltage returns
to or rises above 60%.
If the supply voltage is between 60% and 100% of
nominal, the VFD66 control adjusts the output voltage
and frequency to avoid damaging the motor. The
VFD66 control adjusts the output frequency to match
the available input power. (See Figure 15 and
Figure 16.)
VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin 11