Contemporary Control Systems BAScontrol20 User Manual - Manual (Page 20)

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4.7 Binary Outputs
As shown in Figure 9 , four binary outputs (BO1
– BO4) are available. Each output
requires an external power source. Two types of binary devices can be controlled.
The BASC-20R provides four normally-
open form “A” relay contacts that are rated at
30 VAC/VDC and 2 A. The BASC-20T provides isolated triac outputs that can drive
loads up to 30 VAC and 0.5 A.
Each output voltage is applied to point A with respect to point B and is intended for
Class 2 circuits only.
Figure 9
— Binary Output Connections