Barnett Engineering CV2 Manual de usuario descargar pdf (Pagina 12)

Installation 2-3

B1272M001 BARNETT ENGINEERING LTD. ProTalk Cv2

Figure 5 +12 Volt Input Wiring

Figure 6 +5 VDC Input Wiring

Figure 8 Analog (unfiltered) Input Wiring

Figure 7 Analog (filtered) Input Wiring

2.3.2 +12 volt alarm signal

The input will accept an alarm signal

that switches between 0 and +12 volts

with the wiring arrangement shown in

Figure 5.

If the signal switches between +12 volts

and an open circuit, as in the case of a

relay contact, the ‘B’ terminal must be

connected to ground to ensure that the

logic level goes to ground when the

voltage is removed.

2.3.3 +5 volt alarm signal

Figure 6 shows how an alarm signal that

switches between +5 volts and ground is

wired. If the alarm signal does not have a

true ground level, terminal ‘B’ must be

connected to ground.

2.3.4 Analog input

For analog signals, either of the wiring configurations shown in Figures 7 and 8 can be used.

The connection shown in Figure 7 will provide additional filtering of the signal.

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Barnett Engineering CV2 Manual de usuario Pagina 12