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144 of 165 M-SV-VT-001-EN Rev. A

OEM Module Components

5.1.1 DC-DC Connections

1. HV DC IN J1

2. 250 V DC OUT J2

3. 24 V DC OUT J4

4. Ground M4, M5, J6, and J7

5.1.2 Removal and

Installation

Removal (Revisions A and B):

1. Isolate the VFD power as described in the “Electrical Isolation of the Compressor/VFD” section of

this manual.

2. Open the panel containing the DC-DC. Verify the HV DC input from VFD is below 5 VDC by

checking at VDC+ (J12) and VDC- (J13) test points on DC-DC with a DC voltage meter.

3. Disconnect the HV DC input cable from J1; 24 VDC output cable from J4; and 250 VDC output

cable from J2. Refer to Figures 186 (DC-DC J1 Connection and J12-J13 Test Points) and 2 (DC-DC

J2 and J4 Connections).

Figure 186 - DC-DC J1

Connection and J12 -J13

Test Points

J13 Test Point

J1 Connector

J12 Test Point

Danfoss Turbocor VTT Series User Manual

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