Contemporary-control-systems BAScontrol20 User Manual Manuale Utente Scaricare il pdf (Pagina 7)

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2 Specifications

2.1 Universal Input (Channels UI1–UI8)

Configured As

Limits

Analog Input

0–10 VDC or 0–20 mA (with external resistor).

12-bit resolution. Input impedance 1 MΩ on voltage.

Temperature Input

Type II: –10º to +190 ºF (–23.3º to +87.8ºC)

Type III thermistors: –15º to +200 ºF (–26.1º to +93.3ºC)

Contact Closure Input

Excitation current 0.25 mA. Open circuit voltage 12 VDC.

Sensing threshold 0.3 VDC. Response time 20 ms.

Pulse Input

(points UI1–UI4)

0–10 VDC for active output devices.

0–12 VDC for passive devices (configured for internal pull-up resistor).

40 Hz maximum input frequency with 50% duty cycle.

2.2 Binary Inputs (Channels BI1–BI4)

Limits

Contact Closure

Excitation current 0.25 mA. Open circuit voltage 12 VDC. Sensing

threshold 0.3 VDC. Response time 20 ms.

2.3 Analog Outputs (Channels AO1–AO4)

Limits

Analog Output

0–10 VDC. 12-bit resolution. 4 mA maximum.

2.4 Binary Outputs (Channels BO1–BO4)

(Class 2 circuits only — requires external power source)

Limits

Model BASC-20R

Normally Open contacts. 30 VAC/VDC 2 A.

Model BASC-20T

Isolated triac. 30 VAC 0.5 A.

2.5 Communications

Protocol

Data Link and Physical Layers

Ethernet

ANSI/IEEE 802.3 10/100 Mbps Ethernet. 10BASE-T, 100BASE-TX, auto-

negotiation of speed and duplex. Auto-MDIX. 100 m maximum segment

length. Default IP address is 192.168.92.68/24.

2.6 Protocol Compliance

Protocol

Compliance

BACnet/IP

ASHRAE 135-2008 annex J.

Application specific controller device profile B-ASC.

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