Setup And Adjustments; Emissions Compliance - Johnson Controls VFD66 Series Product/Technical Bulletin

Ensure that the motor(s) and VFD66 control are
securely and adequately grounded. Use the two
ground connection terminals on the conduit entry
bracket. (See Figure 5.) Use a ground connection
terminal similar to AMP Part Number 34162 for
16-14 AWG wire size or AMP Part Number 322455 for
12-10 AWG wire size.
Wiring Input Power
!
CAUTION: Risk of Equipment Damage.
Wiring line-voltage input power to the wrong terminal
block will damage the VFD66 control. Wire input
power ONLY to Terminal Block 1 (TB1).
!
CAUTION: Risk of Equipment Damage.
Use of an incorrect power source may cause
equipment damage. Ensure that the power source
conforms to the requirements of the equipment.
The input line-voltage supply power to L1, L2, and L3
(Terminal Block 1) must be fused. Use fuses sized for
250% of the input current rating of the VFD66 control.
For example, if a VDF66 control is rated at 4 amperes
input current, use a 10-ampere fuse. Do not use fuses
with an extremely fast-opening characteristic (rectifier
fuses).
Wiring Output Power
IMPORTANT: The output phase rotation on TB2 at
T1(U), T2(V), T3(W) is ABC. If the motor rotation is
incorrect, interchange any two motor leads on TB2.
Do not make changes to the input power supply
wiring.
The length of output power wires between the
VFD66 control (TB2) and the motor must not exceed
50 ft (15 m).

Emissions Compliance

If the VFD66 control is used in commercial or
residential applications, FCC and DOC compliance
may require the addition of the items in Table 5 to
reduce electronic noise emissions. Installation of the
parts listed in Table 5 is required for EU Directive
Compliance (CE mark):
•
72/23/EEC (Low Voltage Directive)
•
89/336/EEC (EMC Directive)
Table 5: Emissions Compliance
EMI
Filter for
VFD
Types:
Ferrite Core
(Two Required)
Shielded Power Wiring
*

Setup and Adjustments

This section describes how to set up the
VFD66 control. Remove the terminal access cover to
access the jumper blocks and internal potentiometers.
See Accessing the Interior.
Adjusting the Control Settings
The printed wiring board and its components are at
AC line voltage. Disconnect power from the control
before making any adjustments. Do not touch any
tool to any part of the wiring board while power is
applied. Failure to follow these precautions can
result in personal injury or death.
Control settings are established by positioning
six jumpers and adjusting two potentiometers.
VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin
Required Item
Axx, Bxx, Dxx,
and Fxx
Cxx and Exx
Contact Schaffner and Fair-Rite for local distributors.
L1 L2
L3
E
EMI Filter
L2 L3
L1 E
Ferrite Cores
2, 3 or 4 Conductor
Shielded Cables
Alarm
Device
Separate input and output cables. Do not run input cables
alongside output cables. Do not bundle input and output
cables together.
Figure 10: CE/FCC/DOC Compliance Wiring
!
WARNING: Risk of Electrical Shock.
Suggested Model
Schaffner® EMV AG
FN 258-7/29*
Schaffner EMV AG
FN 258-16/29
Fair-Rite® No.
04431672451
Any 3-conductor, braided,
shielded cable
TB1
TB3 TB2
1 2 3 4
L1 L2 L3 T1 T2 T3
Motor
Input
Shielded
Device(s)
Wiring
7