Danfoss Turbocor VTT Series - VFD DC-DC Cable Verification; Torque Specifications; Table 34 - Regen Cable Torque Specifications

142 of 165 M-SV-VT-001-EN Rev. A
Variable Frequency Drive Components
Installation:
1. Route the cable into the DC-DC box.
2. Connect to (J1) HV IN on the DC-DC Board.
3. Connect the HV DC Ground cable to the DC-DC Board.
4. Secure the cable where it goes into the box.
5. Route the cable into the bottom of the VFD.
6. Connect to + Regen 82 and – Regen 83.
7. Secure the cable where it goes into the power module.
8. Replace all covers.
9. Reconnect power to the VFD.
Description Nm Ft.Lb. In.Lb.
+ and - Regen Screws, M5 19 14 168
Table 34 - Regen Cable
Torque Specications
4.6.2 VFD DC-DC Cable
Verication
1. Apply power to the VTT VFD.
2. Verify the LEDs on CIM are on.
3. On the DC-DC, using an appropriately rated voltage meter, verify HV DC input is correct for the
applied voltage by checking at VDC+ (J12) and VDC- (J13) test points.
4. The measured voltage should be around 1.35 x the AC input voltage.
5. Verify 24 V DC output is correct by checking at J10 and J11 test points.
6. Verify 250 V DC output is correct by checking at J8 and J9 test points.
4.6.3 Torque
Specications