User's Manual PNVR500 series
19
Alarm I/O Connection
2.4.7.
To connect the alarm input signal
Connect the signal line of an alarm input device such as sensor to the rear [ALARM IN] port.
1.
Loosen the screws on both the alarm input port and [GND] port of the provided terminal block plug.
2.
Insert one end of alarm signal cable through the [A1] or [A2] terminal hole below the screw hole, and then
fasten the screw.
3.
Insert the ground signal wire into the hole of the [GND] port (shown also below the screw), and tighten the
screw.
4.
To ensure secure connection, tighten the screw and pull out the wire to check if it's not pulled out. To
remove the wire, loosen the screw and pull it out.
To connect the alarm output signal
Connect the signal line of an alarm output device to the rear [ALARM OUT] port.
1.
Loosen the screws on the [NO] and [NC] ports and the [GND] port of the provided terminal block plug.
2.
Insert the alarm signal wire into the hole of the [NO] or [NC] input port (shown below the screw), and tighten
the screw.
Check the relay output type of Normal Open or Normal Close before selecting a proper type (NO or NC).
a.
NO(Normal Open) : Normally Open but switching to Close if an alarm out occurs.
b.
GND : Insert the grounding wire.
c.
NC(Normal Close) : Normally Close but switching to Open if an alarm out occurs.
3.
Insert the ground signal wire into the hole of the [GND] port (shown also below the screw), and tighten the
screw.
4.
To ensure secure connection, tighten the screw and pull out the wire to check if it's not pulled out. To
remove the wire, loosen the screw and pull it out.
5.
Install the wire-connected terminal block in the rear port.
