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EAGLE CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
EN1Z-0970GE51 R1112
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APPENDIX 2
Sensor Input Accuracy
The internal sensor inputs of the EAGLE Controller support NTC20k
Ω
sensors (see also section “Universal Inputs” on page 15).
The following table lists the typical minimum accuracies of the hardware and software for temperature sensors.
Table 24. Accuracies of internal NTC20k
Ω
sensor inputs of the EAGLE
range
measurement error (excl. sensor characteristics)
-50 … -20 °C (-58 … -4 °F)
≤
5.0 K
-20 … 0 °C (-4 … +32 °F)
≤
1.0 K
0 … 30 °C (32 … 86 °F)
≤
0.3 K
30 … 70 °C (86 … 158 °F)
≤
0.5 K
70 … 100 °C (158 … 212 °F)
≤
1.0 K
100 … 130 °C (212 … 266 °F)
≤
3.0 K
130 … 150 °C (266 … 302 °F)
≤
5.5 K
150 … 400 °C (302 … 752 °F)
--
NOTE:
This is the accuracy of the internal sensor input (ha software [linearization]), only. This table does not include
the characteristics of the sensors, themselves (see section “Sensor Characteristics” below). If a different sensor or
sensor accuracy is required, one may instead use the inputs of, e.g., a connected Panel I/O module.
Recognition of Sensor Failure of Sensor Inputs
The thresholds at which sensor failures – i.e., sensor breaks (SB) and short-circuits (SC) – are recognized depends upon the
given sensor type. In the event of a recognized sensor failure, the sensor inputs assume the safety values configured in CARE.
Table 25 lists the measurement ranges and the corresponding thresholds for the recognition of sensor failure for the various
different sensor types:
Table 25. Thresholds for short-circuit (SC) and sensor-break (SB) recognition
I/O configuration
measurement range
recognition thresholds
2…10 V
2…10 V / 4…20 mA (without pull-up)
SC: < 1.5 V / 3 mA; SB: no recognition
NTC20k
Ω
-50 … +150 °C
SC: < 20
Ω
; SB: < -70 °C
NOTE:
In the case of temperatures lying
outside
the aforementioned ranges, the lowest/highest value
within
the range, instead,
will be communicated. Thus a temperature of -51 °C will be communicated as “-50 °C.”
Sensor Characteristics
The characteristics (resistance in relation to temperature) of the sensors and the resultant voltage are listed on the following
pages. The stated values do not include failures due to: sensor failures; wiring resistance or wiring failures; misreadings due to a
meter connected to measure resistance or voltage at the input.