Removal And Installation; Vfd Control Card Verification; Torque Specifications; Table 32 - Rs485 Details - Danfoss Turbocor VTT Series Service Manual

Table 32 - RS485 Details

4.2.2 Removal and
Installation
4.2.3 VFD Control Card
Verification
4.2.4 Torque
Specifications
Table 33 - VFD Card Torque
Specifications
Variable Frequency Drive Components
Wire Color
Black
Green
White
Red
Blue
Silver
There is an option for customer-supplied cabling, if the colors do not match, make a note of the
terminal number to the color wire.
Removal:
1. Isolate the VFD power as described in the
this manual.
2. Open the front panel of the VFD and locate the plastic housing that is displayed through the
front panel door.
3. Remove the plastic housing so that you can see the metal mounting bracket.
4. Remove the control wiring terminal blocks located at bottom of the VFD Control Card.
5. Remove the four (4) screws that hold metal cradle in to the card holder.
6. Carefully pull the card off the metal retainer bracket. The VFD Control Card has a plug on the
backside that connects it to the ribbon cable.
Installation:
1. Carefully attach card to the retainer bracket. Be sure that the plug on the back of card is inserted
into ribbon cable holder properly.
2. Attach the metal cradle to the front side of the VFD Control Card and secure it with the four (4)
screws and torque to specification.
3. Install the terminal blocks to their original location.
4. Replace the plastic housing back over the 9 pin connector and place gasket around it.
5. Close the door on the panel making sure gasket is in place to ensure a watertight seal.
6. Restore power to the VFD.
Apply power to the VFD and verify proper operation via the SMT.
VFD Control Card Mounting Screws
Terminal Number
61
68
69
12
19
Screw
NOTE
"Electrical Isolation of the Compressor/VFD"
Description
section of
Nm Ft.Lb.
1 -
M-SV-VT-001-EN Rev. A
In.Lb.
10
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