User Manual

All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014 21
Bulletin 1606 Switched Mode Power Supplies
26.12. Mounting Orientations
Mounting orientations other than input terminals on the bottom and output on the top require a reduction in
continuous output power or a limitation in the maximum allowed ambient temperature. The amount of reduction
inuences the lifetime expectancy of the power supply. Therefore, two different derating curves for continuous
operation can be found below:
Curve A1 Recommended output current.
Curve A2 Max allowed output current (results in approximately half the lifetime expectancy of A1).
Fig. 26-8
Mounting
Orientation A
(Standard
orientation)
Power
Supply
INPUT
OUTPUT
Output Current
0
10 20 30 40
60°C
4
12
16
20A
50
A
1
8
Ambient Temperature
Fig. 26-9
Mounting
Orientation B
(Upside down)
Power
Supply
INPUT
OUTPUT
Output Current
0
10 20 30 40
60°C
4
12
16
20A
50
A
1
8
Ambient Temperature
Fig. 26-10
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40
60°C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
Fig. 26-11
Mounting
Orientation D
(Horizontal cw)
Power
Supply
INPUT
OUTPUT
Output Current
0
10 20 30 40
60°C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
Fig. 26-12
Mounting
Orientation E
(Horizontal ccw)
Power
Supply
INPUT
OUTPUT
Output Current
0
10 20 30 40
60°C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature