Contemporary-control-systems BASremote Installation Guide Manual de usuario descargar pdf (Pagina 13)

TD040300-0II

Thermistors

The BAS Remote has built-in calibration curves for 10 kΩ Type II or

Type III thermistors. These devices are non-linear with a negative

coefficient of resistance to temperature and provide a nominal resistance

of 10 kΩ at 25°C. Using the web server, configure an input for either

Type II or Type III thermistor. As shown in Figure 11, connect the

two-wire thermistor to points A and B. Polarity is not an issue. If

averaging of temperature is desired, connect multiple thermistors in a

series-parallel combination so that the nominal resistance remains at 10 kΩ

as shown. Make sure that all devices are of the same type. The effective

range of temperature measurement is from +40° to +110°F (+4.4° to

+44°C). An open input results in a fault condition that produces a red

LED indication for that channel.

Figure 11 — Thermistor Connections

Contact Closure

The BAS Remote can sense the make or break of a contact from a relay

or push-button. The contacts being sensed must be absent of any applied

source of energy, and be rated for low-voltage, low-current switching.

The BAS Remote will provide the electrical energy to be sensed. Using

the web server, configure an input for contact closure. As shown in

Figure 12, simply connect the contacts between points A and B. For

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Contemporary-control-systems BASremote Installation Guide Manual de usuario Pagina 13