
FDCI181-2 Input Module
Product Manual
Characteristic
l 2 monitored digital input
l Input lines are monitored for open line and short/open circuit (terminal resistors is
mandatory)
l Microprocessor-controlled signal evaluation
l Pr evention of noise interference through intelligent analysis of input signals
l LED display of input status
l Automatic address setting, without encoder settings or Dip-switch
l Power supply via FD18-BUS
l Communication with controller via FD18-BUS(detection line)
l Directly used in dry areas, Applicable in dusty and humid areas when installed in
FDCH221 housing
l “Sticker Method” easy for commissioning
Application
With the input a status can be monitored, the input can be configured by controller or
configuration tools as follows:
l “Status“ input or “Alarm“ input
l Lead monitoring for open line or open line and short circuit
l When inputting status, according to different status of contact, can be set as
follows:
- Normal mode: normally open input
- Inverted mode: normally closed input
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Control Products and Systems

Structure
“Status” inputs and “Alarm” inputs
“Alarm“ inputs trigger an alarm as soon as the input is activated. “Status“ inputs trigger a
monitoring status change as soon as they are activated.
Line monitoring and circuitry
The input lines are monitored for open line or open/short line. To make these possible,
resistors must be properly connected to the end of lines of the input (Fig.6). When an
open line or a short line occurs on one of the input lines, a trouble message is
transmitted to the control panel.
The input must be potential-free.
The module consists of the module carrier, the printed circuit board, the cover and the
protection cover. The printed circuit board includes the LEDs. The LEDs indicate the
status of the inputs. The cover of the printed circuit board is transparent, so that the state
of the LEDs is visible even when the housing is closed.
To protect the modules from environmental influences, there are additional options for
the housing.
LED indicator
1
Fig. 1 Overview
Legend
1. Input 1 3. Input 2
2. Detection line 4. LED indicator
LED indicator is used for displaying status of input. Each input has an indicator.
Status LED Meaning
Off Normal operation
LED flashing every 1 s (250 ms ON) Input activated
Input 1, LED flashing every 1 s (short flashes) Localization mode
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Building Technologies A6V10436765_b_en_--
Fire Safety 2014-11- 27

Installation
Fig. 2 Fig. 3 Fig. 4
Fig. 5 Fig. 6
Preparation
Determine the type of installation: there are 2 types of
installation for FDCI181-2 Input module:
– Installation outside a switching cabinet or a control unit:
use FDCH221 housing (Fig. 3) .
– Installation directly in a switching cabinet or a control
unit: mount the module on an even surface (Fig.2).
Damage by water!
In humid or w et environments always use the housin g
FDCH221!
Installation of FDCH221 Housing
1. Open the housing.
2. Determine the cable entries in the housing and break
these open.
3. Use two screws (M 4) to fit the housing on a plane
surface (Fig. 3). Distance between holes: 182.0±1.0mm.
4. Fix and guide in the cables with waterproof joint
(provided by users themselves).
5. Fix the lid additionally with four screws (Fig. 4). (Onl
way is IP65 protection guaranteed.)
The housing lid is transparent. Consider a suitable
installation position to make sure that the LEDs of the
module ar e visible at an y time.
Installation of module in FDCH221 housing
Caution!
Overheating of FDCI181-2 input module.
1. Open the housing.
2. Fix module with two screws in the housing (Fig. 3).
3. Close the housing.
Installation on an even surface
1. Position module on an even surface (Fig. 2).
2. Fix module with two M4 screws. Distance between
holes:63.5±1.0mm.
Electric connection
1. Connect the cables to the terminals according to Fig.
5/6.
Connect only one wire per terminal!
2. Connect the resistors to the end of the monitored line.
2 resistors of 3.3KΩ and 2 of 680Ω are delivered with
the product.
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Building Technologies A6V10436765_b_en_--
Fire Safety 2014-11- 27

Dimension
Specification
In:mm
Operating voltage 12 … 32 VDC
Operating current(Quiescent) 0.28 mA
Activation current 0.52 mA
Monitoring resistors 3.3KΩ(1/4w) / 680Ω(1/4w)
Operating temperature 0 … +42 °C
Storage temperature –20 … +75 °C
Humidity
≤95 %
Communication protocol FD18-BUS
Load factors 3
Connection terminals 1.0 … 1.5 mm
2
Color
– Housing
– Cover
white, RAL 9010
transparent
Protection category EN60529/IEC529/GB4208-93
– With housing FDCH221 IP65
Approval (for Russian) TR RF N123-FZ
Details for ordering
Type Material No. Part No. Designation Weight
FDCI181-2 S54322-F1-A1 100856215 Input module 0.086 kg
FDCH221 S54312-F3-A1 100686595 Housing(IP65) 0.250 kg
Beijing Siemens Cerberus Electronics Limited
No.1,Fengzhidonglu, Xibeiwang, HaiDian District,
Beijing, 100094, China
Tel: +10 6 476 8806
Fax: +10 6 476 8899
© Data and design su bject to change without notice.
Doc No. A6V10436765_b_en_-- Manual FD18
Edition 2014-11-27 101518898