Ronan X16PDM User Manual

Page 26

Rev 1.0 Series X11CA Hardware Manual

2. X11CA Hardware Setup

Alarm Terminal Inputs

Two basic types of terminal contacts are available.

i. Dry contact.

Figure 2-20. With 24Vdc
system power

Figure 2-21. With 48Vdc,
5Vdc, 10Vdc, 125Vdc FC
Source

FC source must be common to
the system FC.

ii. Opto-Coupled (Live contact)

Figure 2-22. With FC source
24 Vdc/Vac, 48Vdc/Vac,
120/Vac

Each active alarm input must be wired to a customer’s sensing device to set
its alarm condition as either open or closed. The terminals on the alarm
system for each alarm input are marked H and FC. The H terminal in the
standard alarm system is the main system voltage that is supplied via a pull-
up resistor on each alarm point. Each alarm input module is provided with a
separate H terminal. When using a common H, it is important to jumper
together the H terminals of the respective alarm cabinet modules to provide
the correct amount of current source to the field contact.