UMAX030211 Version 1.0.2. Preliminary Documentation – May be subject to change
19 - 85
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Sensor Type/
Pulses per Rev
7148h
7120h
7122h
7149h
2111h
Voltage: 0 to 5V and 0 to 10V
Current: 0 to 20mA and 4 to
20mA
RPM: 0 to 6000RPM
PWM: 0 to 100%
0 to 7120h
7148h to 7122h
7120h to 7149h
If(7149h>MAX)
7120h to MAX
7122h to
110% of
MAX
10% of
MAX
Current: 4 to 20mA
0 to 7120h
7148h to 7122h
If(7148h<4mA) 4mA to 7122h
Freq: 0.5Hz to 50Hz
0.1Hz to 7120h
7148h to 7122h
If(7148h<0.5Hz) 0.5Hz to 7122h
Freq: 10Hz to 1kHz
5Hz to 7120h
7148h to 7122h
If(7148h<10Hz) 10Hz to 7122h
Freq: 100Hz to 10kHz
50Hz to 7120h
7148h to 7122h
If(7148h<100Hz) 100Hz to 7122h
Voltage: 0 to 5V and 0 to 10V
Current: 0 to 20mA and 4 to
20mA
RPM: 0 to 6000RPM
PWM: 0 to 100%
0 to 7120h
7148h to 7122h
Table 8 – AI Object Ranges Based on Sensor Type and Input Range
The last objects associated with the analog input block left to discuss are those associated with fault
detection. Should the calculated input (after measuring and filtering) fall outside of the allowable
range, as defined by the AI Span Start and AI Span End objects, an error flag will be set in the
application if and only if object 2110h
AI Error Detect Enabled
is set to TRUE (1).
When (7100h AI Input FV < 7148h AI Span Start), an “Out of Range Low” flag is set. If the flag stays
active for the 2112h
AI Error Reaction Delay
time, an Input Overload Emergency (EMCY) message
will be added to object 1003h
Pre-Defined Error Field
. Similarly, when (7100h AI Input FV > 7149h
AI Span End), an “Out of Range High” flag is set and will create an EMCY message should it stay
active throughout the delay period. In either case, the application will react to the EMCY message
as defined by object 1029h
Error Behaviour
at the sub-index corresponding to an Input Fault.
Once the fault has been detected, the associate flag will be cleared only once the input comes back
into range. Object 2111h
AI
Error Clear Hysteresis
is used here so that the error flag will not be
set/cleared continuously while the AI Input FV hovers around the AI Span Start/End value.
To clear an “Out of Range Low” flag, AI Input FV >= (AI Span Start + AI Error Clear Hysteresis)
To clear an “Out of Range High” flag, AI Input FV <= (AI Span End - AI Error Clear Hysteresis)
Both flags cannot be active at once. Setting either one of these flags automatically clears the other.
