Rockwell Automation 1395 Digital DC Drive - Manual (Page 61)

Publication 2361-5.01 July 1998
Installing Your Drive 5-7
The following table shows the transformer sizes available, typical
wire sizes used, and the corresponding field currents. Refer to local
codes for all wiring.
Table 5.F: Field Transformers
Installing the Field Transformer
1. Mount the transformer enclosure and remove any input/output
knockouts, as necessary (see Figure 5.4 for enclosure details).
2. Ground the enclosure according to local codes.
3. Remove the top plate from the enclosure.
4. Connect the first and third phases to the transformer primary
(F20 to H1, F21 to H2).
5. Wire the secondary back to drive TB8 (X1 to TB8-1, X2 to
TB8-3).
6. Secure the top plate on the enclosure.
Transformer
Size (kVA)
Typical Wire
Selections (AWG)
Maximum Field
Current (A)
10 12 18
15 10 28
20 8 40
50 3 90
!
ATTENTION: The motor field supply is phase
sensitive. To guard against possible drive or motor
damage, ensure that the connections are made according
to Figure 5.3.