POWER SUPPLY AND WIRING
Section 6
(continued)
For Frame Size 4 Controllers:
Single Phase Connection
For small drives with diode rectifier front end it is possible to run a three phase output with a single phase input.
Only part of the three phase input bridge is used. Ripple current becomes 120 Hz rather than 360. This places a
greater demand on the DC filter components (capacitor bank and DC choke). The result is that the drive must be
derated to 50% current.
The chart below shows the full load output current ratings of the controller when single phase or 3 phase power
is used. If single phase input power is used the Motor Overload switches must be set to 50% or lower.
Supply
Frame Size
Voltage
1
2
208/230
3
4
1
460
2
3
Page 12
Model Number
3 Phase Input 1 Phase Input 3 Phase Input 1 Phase Input
SPD20050
SPD20050F
SPD20075
SPD20075F
SPD20100
SPD20100F
SPD20150
SPD20150F
SPD20200
SPD20200F
SPD20250
SPD20250F
SPD20300
SPD20300F
SPD40050
SPD40050F
SPD40075
SPD40075F
SPD40100
SPD40100F
SPD40150
SPD40150F
SPD40200
SPD40200F
SPD40250
SPD40250F
SPD40300
SPD40300F
Nominal HP Rating
5.0
2.0
7.5
3.0
10.0
5.0
15.0
7.5
20.0
10.0
25.0
12.0
30.0
15.0
5.0
7.5
10.0
15.0
20.0
25.0
30.0
Controller Full Load
Output Current Rating
17.8
8.1
26.4
10.9
37.0
17.8
47.4
26.4
60.6
33.0
76.0
40.2
94.0
47.4
8.9
13.2
18.5
23.7
30.3
37.5
47.0