CompactLogix Packaged Controllers
53
Publication 1769-IN082A-EN-P - July 2008
Embedded HSC Temperature Derating
Maximum Input Voltage - 24V DC Operation
Maximum Output Voltage - 24V DC Operation
Temperature
Derated Voltage
(1)
(1)
Input voltage derating between 55 °C and 60 °C is achieved by using a dropping resistor.
For 24V DC input voltage, use a 2.4 k
Ω
, ½ Watt resistor.
For input voltages other than 24V DC, use a ½ Watt resistor with value: 125 x (V
in
- 5V).
0 °C to 40 °C (-32 °F to 104 °F)
30V DC
55 °C (131 °F)
26.4V DC
60 °C (140 °F)
5V DC
Temperature
Derated Voltage
0°C to 40°C (-32°F to 104°F)
30V DC
55°C to 60°C (131°F to 140°F)
26.4V DC
0
5
10
15
20
25
30
35
0
10
20
30
40
50
60
70
Voltage Derating Based on Temperature
Ambient Temperature (°C)
Vo
lt
s (
D
C
)
26.4V DC at 55 °C
26
27
28
29
30
31
0
10
20
30
40
50
60
70
Voltage Derating Based on Temperature
Vo
lts (D
C
)
26.4V DC at 55 °C
Ambient Temperature ( °C)