User's Manual

Table Of Contents
DIB-500 R4.1 Product description
Constituents
40 Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1
3.1.1.5 Alarm input/output module – optional (V
AC
or alarm system expansion)
The alarm input/output module is a hardware component that provides the alarm con-
tacts for the digital alarm inputs/outputs. The alarm input/output module also features
alarm contacts for connecting external hardware components.
Figure 3.10 shows the alarm input/output module. The following table describes the
components in greater detail.
Figure 3.10 Alarm input/output module
3.1.1.6 Rectifier module – optional (V
AC
expansion)
The rectifier modules are used to supply the mounting frame and the SC200 with volt-
age.
The rectifier module is a hardware subcomponent of the power supply unit and used for
converting alternating-current voltage (V
AC
) into direct-current voltage (V
DC
).
Table 3.12 Legend: alarm input/output module
No. Component
1 Digital external alarm inputs
2 Digital external alarm outputs
1 2