Rockwell Automation 825 Smart Motor Manager User Manual - Manual (Page 81)

Functions 3-48
Publication 825-UM001B-EN-P January 2001
Figure 3.27 Characteristic of PTC Sensors as per IEC 34-11-2
Analog Output
This output supplies a current of 4…20 mA proportional to one of the following selectable
actual values:
• Thermal utilization (calculated temperature rise of the motor)
• Motor temperature (max. PT100 temperature)
• Motor current (% I
e
)
Specifications
Analog Output for Thermal Load or Motor Temperature (PT100 Max.)
This output supplies a current of 4…20 mA either proportional to the calculated temperature
rise of the motor or the motor temperature (max. temperature of the operating PT100
Sensors). The thermal load in percentage is also indicated on the LCD of the Smart Motor
Manager.
Output 4…20 mA (IEC 381-1) at -5…+60 ° C (23…140 ° F)
Load 0…300 Ω
4000
1330
550
250
100
20
10
R [
Ω
]
-20 ° C
0 ° C
TNF-20K
TNF- 5K TNF+15K
TNF+ 5K
TNF
TNF Nominal pickup temperature
R [ Ω] Resistance to sensors