Rockwell Automation 1769-L23E-QB1B - Embedded HSC Temperature Derating

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 kΩ, 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
010203040506070
Voltage Derating Based on Temperature
Ambient Temperature (°C)
Volts (DC)
26.4V DC at 55 °C
26
27
28
29
30
31
010203040506070
Voltage Derating Based on Temperature
Volts (DC)
26.4V DC at 55 °C
Ambient Temperature ( °C)