Honeywell Excel 500 Installation Instructions Manual page 35

Vi
Fig. 75. Analog input / low-impedance sensors
Pull-Up Resistor Handling when Using Analog Inputs as
Digital Inputs (O.S. 2.03.xx)
When the input is identified as a DI point in CARE (DI
subtype AI), the internal pull-up resistor is enabled.
Vi
Fig. 76. Analog inputs identified as DI point (O.S. 2.03.xx)
Pull-Up Resistor Handling when Using Analog Inputs as
Digital Inputs (O.S. 2.04.00 or higher)
When the input is identified as a DI point in CARE (DI subtype
AI), the internal pull-up resistor is disabled.
Vi
Fig. 77. Analog inputs identified as DI point (O.S. 2.04.00
or higher)
Sensors and Transducers
Passive sensors (NTC 20k ohms)
Room temperature sensor RF20
Inlet temperature sensor VF20A
External temperature sensor AF20
Active sensors (0 to 10 V):
Duct Humidity Sensor H7011A1000
Duct Humidity Sensor H7012A1009
Active sensors (0 (4) to 20 mA):
10 Vdc
25K ohm
200K ohm
ground
10 Vdc
25K ohm
200K ohm
ground
10 Vdc
200K ohm
ground
EXCEL 500/600 INSTALLATION INSTRUCTIONS
Immersion temperature sensor VF 100
Air duct temperature sensor LF 100
Wind sensor:
Wind sensor WS21.
Further connections:
Temperature sensor terminal TF26
Table 15. Accuracy of analog input sensors
Range
-58 to –4 °F (-50 to –20 °C)
-4 to 32 °F (-20 to 0 °C)
32 to 86 °F (0 to 30 °C)
86 to 158 °F (30 to 70 °C)
158 to 212 °F (70 to 100 °C)
212 to 266 °F (100 to 130 °C)
266 to 302 °F (130 to 150 °C)
35
Measurement error
(without sensor tolerance)
Pt1000 NTC (20k ohms)
1.2 K 5.0 K
≤ ≤
0.7 K 1.0 K
≤ ≤
≤ 0.5 K ≤ 0.3 K
0.7 K 0.5 K
≤ ≤
1.2 K 1.0 K
≤ ≤
1.2 K 3.0 K
≤ ≤
1.2 K 5.5 K
≤ ≤
EN1R-1047GE51 R0902