Emerson FXMP25 User Manual page 23

Figure 4-4 Surge suppression for analog and bipolar inputs and outputs
Surge suppression devices are available as rail-mounting modules, e.g. from Phoenix Contact:
Unipolar TT-UKK5-D/24 DC
Bipolar TT-UKK5-D/24 AC
4.7 Control terminal specification
Figure 4-5 Control terminals
0V
Ion
1 1 1 2 3 4 5 6 7 8 9 10
1 (Ion)
Dual Function
Type
Voltage range
Absolute maximum applied
voltage range
Load
Input threshold
Update rate
2 (0V)
Function
3 (Iref)
Function
Full scale voltage range
Absolute maximum voltage range
Input resistance
Resolution
Sample period
FXMP25 User Guide
Issue Number: 3
Signal from plant
0 V
+10V If Va
Fail
Iref
Digital input
0V common
Analog input
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Signal to drive
2 x 15 V zener diode
e.g. 2xBZW50-15
Field economy select or enable
controller (See Pr 81)
Single ended, negative logic (0 V
common for normal operation)
0 V to 24 V
-18 V to 30 V
2.4 mA at 0 V (sink)
High: 11 V, Low: 9 V
4 ms
Common connection for all external
devices
Current demand input
0 to 10 V
-18 V to 30 V
44 kΩ
10 bits
4 ms
0 V
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