Structure and function
Input/output configuration options (secondary side)
3
40 | 72
Building Technologies
009122_h_en_--
Fire Safety
2016-05-04
3.4.4 Configuration as a control line
3.4.4.1 Overview
Current limiting
Within the context of control, the secondary side external supply voltage (DC 24 V)
is applied directly to the relevant output for the control lines via a relay. In the
input/output module FDCIO223, internal fuses (0.7 AT self-resetting fuses: PTCs)
are present on the control lines.
Protect the contacts either with the internal fuses (max. 0.7 AT) or with fuses
provided by the customer (1 AT or 1.5 AT), coupled with bridging the internal fuses
to jumper 3 (see chapter 'Printed circuit board view [ 21]'). The jumper
configuration is described in chapter 'Adjustment elements [ 27]'.
The maximum current load of the outputs is 1 A if two outputs are used (2x 1 A) or
1.5 A (1x 1.5 A) if one output is used. These values apply to a maximum operating
temperature of 60 °C.
Monitoring
You have the option of monitoring the control line. Monitored control lines are
monitored for the following criteria:
Open line
Short-circuit
Ground fault (only both inputs/outputs jointly, no line-specific fault message)
Recommendation: Always operate the control line in monitored mode.
The control line is not monitored in the triggered state.
To avoid false alarms, transfer to the control panel can be delayed by means of a
setting. In theory, a delay time of 0.5…240 seconds can be set. However, in
practice the actual setting range will depend on the control panel.
Monitoring can be configured in accordance with the following types:
Identical-polarity monitoring
Reverse-polarity monitoring
The monitoring voltage is set by means of jumpers.
Control
Control is possible with or without confirmation. The various configuration options
are described in the next two sections.
See also
Calibrating the control line [ 57]
Control without confirmation [ 43]
Control with confirmation [ 44]
