Danfoss VLT HVAC Drive FC 100 Series Design Manual page 56

3. VLT HVAC Drive Selection
Follow these steps:
1. Remove the LCP or Blind Cover
2. Remove the Terminal Cover
3. Remove the Cable Decoupling Plate and the plastic cover un-
derneath
4. Insert the 24 V DC Back-up External Supply Option in the Option
Slot
3
5. Mount the Cable Decoupling Plate
6. Attach the Terminal Cover and the LCP or Blind Cover.
When MCB 107, 24 V back-up option is supplying the control circuit, the
internal 24 V supply is automatically disconnected.
Illustration 3.2: Connection to 24 V back-up supplier (A2-A3).
56
Illustration 3.3: Connection to 24 V back-up supplier (A5-C2).
MG.11.B7.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Design Guide