User's Manual

Table Of Contents
DIB-500 R4.1 Setup and commissioning
Connecting external alarms – optional, with VAC or alerting expansion
126 Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1
5.12.2 Connecting external alarms
Depending on the desired alarm signalling, external alarms can be connected to the ter-
minals of the alarm inputs/outputs. For the alarm outputs you can influence, in which
cases alarms are to be signalled. This is determined via the corresponding connection
combinations of the terminals, refer to Figure 5.27.
Figure 5.27 shows examples of the clamps for connecting external alarms. The follow-
ing table describes these indicators in detail.
Figure 5.27 Terminals for connecting external alarms (example)
Alarm jumper
If an external alarm is not connected, one alarm jumper must be mounted per alarm
input to short-circuit the contacts. When external alarms are connected, the jumper
must be removed from the corresponding terminal.
Proceed as follows to connect external alarms:
Preparation:
The voltage source on site must be de-energised.
The toggle switches must be set to the "Off" position ("downward" switch position).
The connecting cables must be available.
The tools, auxiliary means and materials specified must be available, refer to
section 5.2 on page 90.
Table 5.16 Legend: terminals for connecting external alarms (example)
No. Alarm input/output Terminal Description
1 Alarm input 0V Grounding (digital input 1)
2 D1 Digital input 1
3 Alarm output COM Common – centre contact
4 NO normally open – switch open if an alarm
is not signalled
e.g. a connected line will light up if an
alarm occurs
5 NC normally closed – switch closed if an
alarm is signalled
e.g. a connected lamp will go out if an
alarm occurs
1
3 42 5