Barnett Engineering PRO TALK CV2 Manuale Utente
Installation
3-3
B1272M001
BARNETT ENGINEERING LTD.
ProTalk Cv2
Figure 6 +12 Volt Input Wiring
Figure 7 +5 VDC Input Wiring
Figure 9
Analog (unfiltered) Input Wiring
Figure 8 Analog (filtered) Input Wiring
3.3.2 +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 6.
that switches between 0 and +12 volts
with the wiring arrangement shown in
Figure 6.
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.
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.
3.3.3 +5 volt alarm signal
Figure 7 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.
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.
3.3.4 Analog input (Advanced mode)
For analog signals, either of the wiring configurations shown in Figures 8 and 9 can be used.
The connection shown in Figure 8 will provide additional filtering of the signal.
The connection shown in Figure 8 will provide additional filtering of the signal.