Recognition Of Sensor Failure Of Sensor Inputs - Honeywell Spyder 7 Installation Instructions Manual

Recognition of Sensor Failure of Sensor Inputs

The thresholds at which the sensor fails, that is, sensor breaks (SB) and short-circuits (SC), are recognized,
depending upon the given sensor type. In the event of a recognized sensor failure, the sensor assumes the safety
values configured in Table 29 on page
recognized sensor failure for the various types of sensor:
Table 30 Thresholds for Short-circuit (SC) and Sensor-break (SB) Recognition
I/O
Configuration
2 to 10 V 2 to 10 VDC 4 to 20 mA (without pull-up)
10 k NTC Ω (Type II) -22 °F to +212 °F (-30 °C to +100 °C)
20 k NTC Ω
-58 °F to +302 °F (-50 °C to +150 °C)
PT1000 -58 °F to +752 °F (-50 °C to + 400 °C)
NI1000TK5000 -22 °F to +266 °F (-30 °C to +130 °C)
PT100 -58 °F to +752 °F (-50 °C to +400 °C)
PT3000 -58 °F to +302 °F (-50 °C to +150 °C)
10K3A1 -40 °F to +257 °F (-40 °C to +125 °C)
Nickel Class B DIN
-76 °F to +752 °F (-60 °C to +169 °C)
43760 sensors
NOTE:
In the case of temperatures lying outside the ranges, the lowest and highest value within the range, will be
communicated. Thus, a temperature of -51 °F will be communicated as "-50 °F."
SPYDER MODEL 7 VAV CONTROLLER INSTALLATION INSTRUCTIONS
34. It lists the measurement ranges and the corresponding thresholds for the
Measurement Range
35
Recognition Thresholds
SC: < 1.5 VDC 3 mA; SB: no recognition
SC: < 20 Ω; SB: < -94 °F (-70 °C)
SC: < 20 Ω; SB: < -94 °F (-70 °C)
SC: < 775 Ω; SB: < -58 °F (-50 °C)
SC: < 850 Ω; SB: < -58 °F (-30 °C)
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