Critical Environment Technologies FCS User manual

Installation Manual
www.critical-environment.com
FCSFlexible Control System Controllers
Rev. C | 2021.12

2 © 2021 All rights reserved. Data subject to change without notice.
FCS - Installation Manual Rev. C | 2021.12
NEED MORE INFORMATION?
This is the FCS Installation Manual for the FCS Flexible Control System.
For more detailed information, including the following topics, please refer to the
FCS Operation Manual:
• Modbus / BACnet Setup
• Modbus Holding Registers
• Conguring Alarm Setpoints
• Relay, Strobe and Horn and Audible Settings and Conguration
• Logic and Priority Settings and Congurations
• Analog Input and Analog Output Settings
• STEL and TWA Settings
• Title-24 Settings
• Calibration Expired Settings

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Rev. C | 2021.12 FCS - Installation Manual
TABLE OF CONTENTS
1 POLICIES ........................................................................................................... 5
1.1 Important Note .........................................................................................................................5
1.2 Warranty Policy......................................................................................................................... 5
1.3 Service Policy ............................................................................................................................6
1.4 Copyrights and Registered Trademarks ..............................................................................6
1.5 Disclaimer ..................................................................................................................................7
1.6 Revisions....................................................................................................................................7
2 INTRODUCTION ................................................................................................. 8
2.1 General Description..................................................................................................................8
2.2 Key Features..............................................................................................................................8
3 INSTRUMENT SPECIFICATIONS........................................................................ 9
3.1 Technical Specications .........................................................................................................9
3.2 Maximums by Model.............................................................................................................11
3.3 Enclosure Dimensions...........................................................................................................12
4 LIST OF COMPATIBLE DEVICES....................................................................... 12
5 INSTRUMENT FEATURES ................................................................................ 14
5.1 Front Exterior Enclosure........................................................................................................14
5.2 Interior System Layout (Bottom) Shown with Options -AI and AO Installed...............15
5.3 Interior System Layout (Door)..............................................................................................16
5.4 Optional Internal Analog Inputs and Analog Outputs (Options -AI and -AO) ..............17
6 INSTALLATION ................................................................................................ 18
6.1 General Safety Warnings.......................................................................................................18
6.2 Protection Against Electrical Risks.....................................................................................18
6.3 Protection Against Mechanical Risks.................................................................................18
6.4 Location of System Installation...........................................................................................18
6.4.1 Wet Environment Considerations...........................................................................19
6.4.2 EMI and RF Interference Considerations ..............................................................19
6.5 Standard Enclosure Mounting Components.....................................................................20
6.5.1 Enclosure Interior Base ............................................................................................20
6.5.2 Enclosure Top and Bottom ......................................................................................20
6.6 Wiring Power Supply Connections......................................................................................21
6.7 Wire Gauge vs Run Length ...................................................................................................21
6.8 Wiring a Remote Power Supply (RPS-24VDC)..................................................................22
6.9 Wiring Internal Analog Outputs (Option -AO) ....................................................................23
6.10 Wiring Internal Analog Inputs (Option -AI).......................................................................25
6.11 Wiring LNK-AO Peripheral Device (additional Analog Outputs)...................................27
6.12 Wiring LNK-AI Peripheral Device (additional Analog Inputs) .......................................27

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FCS - Installation Manual Rev. C | 2021.12
6.13 Wiring Digital Inputs (LPT-P and LPT-M Transmitters) .................................................28
6.14 Wiring LNK-XT Network Extender Peripheral Device Connections ............................29
6.15 Wiring to Building Automation System (BAS).................................................................30
6.16 Wiring Remote Strobe / Horn Using Output Terminal ..................................................31
6.17 Wiring Internal Relay Connections....................................................................................31
6.18 Wiring Remote Relay Connections (RLY-4 and RLY-8)..................................................32
6.19 Wiring RDM Remote Display Connections......................................................................33
6.20 Wired Example of an FCS Gas Detection System .........................................................35
7 BASIC SYSTEM OPERATION ........................................................................... 36
7.1 Navigating the Menu Structure............................................................................................36
7.2 Accessing the Menu with Passcodes ................................................................................36
7.3 Power Up and Warm-up........................................................................................................38
7.4 Home Screen Display ............................................................................................................38
7.4.1 Summary Display (Factory Default).......................................................................38
7.4.2 Channel, Scrolling Display........................................................................................44
7.5 Silencing the Internal Audible Alarm, Terminal Connected and/or Remote Horns
and Strobes ....................................................................................................................................44
7.6 Test Menu Functions .............................................................................................................45
7.6.1 Test Audible (Buzzer) ................................................................................................46
7.6.2 Test Strobe..................................................................................................................47
7.6.3 Test Relays..................................................................................................................47
7.6.4 Test Analog Outputs..................................................................................................48
7.7 Recalibrating the Display to Improve Response...............................................................48
8 BASIC SETTINGS AND CONFIGURATIONS...................................................... 49
8.1 Factory Default Settings .......................................................................................................49
8.2 Set Clock .................................................................................................................................50
8.3 Enable / Disable Data Logging and Changing Logging Interval ...................................50
8.4 How to Clear a Data Logging Failure Fault .......................................................................51
8.5 Congure RDM Remote Display(s).....................................................................................52
8.6 Enable / Disable Channels ...................................................................................................53
8.7 Enable / Disable Relays, Audible, Horns and Strobes ....................................................54
9 OPTIONS AND ACCESSORIES ......................................................................... 54
9.1 Top Mounted Strobe (Option -L)..........................................................................................54
9.2 Manual Shutoff Switch (Option -SW)..................................................................................55
9.3 Enclosure Door Lock and Keys (Option -DL).....................................................................56
9.4 Metal Protective Guard..........................................................................................................56
10 MAINTENANCE ............................................................................................. 57
11 TROUBLESHOOTING...................................................................................... 57

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Rev. C | 2021.12 FCS - Installation Manual
1 POLICIES
1.1 Important Note
Read and understand this manual prior to using this instrument. Carefully read the warranty
policy, service policy, notices, disclaimers and revisions on the following pages.
This product must be installed by a qualied electrician or factory trained technician and
according to instructions indicated in this manual. This instrument should be inspected and
maintained on a regular basis by a qualied and trained technician.
This instrument has not been designed to be intrinsically safe. For your safety, do not use it
in classied hazardous areas (explosion-rated environments).
INSTRUMENT SERIAL NUMBER:
__________________________________________________________
PURCHASE DATE:
__________________________________________________________
PURCHASED FROM:
__________________________________________________________
1.2 Warranty Policy
Critical Environment Technologies Canada Inc. warrants the products we manufacture
(excluding sensors, battery packs, batteries, pumps, and lters) to be free from defects in
materials and workmanship for a period of two years from the date of purchase from our
facility. As a reminder, sensors are consumable items and once they leave our factory, we
cannot reuse or resell them. As such, all sensor sales are nal. Should the sensor itself be
faulty, there is a one-year pro-rated warranty that would apply from the date of purchase from
our facility.
The warranty status may be affected if the instrument has not been used and maintained
as per the instructions in the manual or has been abused, damaged, or modied in any way.
The product is only to be used for the purposes stated in the manual. Critical Environment
Technologies is not liable for auxiliary interfaced equipment or consequential damage.
All returned goods must be pre-authorized by obtaining a Returned Merchandise
Authorization (RMA) number. All goods must be shipped to Critical Environment
Technologies freight prepaid.Contact the manufacturer for an RMA number and procedures
required for product transport.
Due to ongoing research, development, and product testing, the manufacturer reserves the
right to change specications without notice. The information contained herein is based

6 © 2021 All rights reserved. Data subject to change without notice.
FCS - Installation Manual Rev. C | 2021.12
on data considered accurate. However, no warranty is expressed or implied regarding the
accuracy of this data.
1.3 Service Policy
CETCI maintains an instrument service facility at the factory. Some CETCI distributors
/ agents may also have repair facilities; however, CETCI assumes no liability for service
performed by anyone other than CETCI personnel.
Repairs are warranted for 90 days after date of shipment (sensors have individual
warranties). Should your instrument require non-warranty repair, you may contact the
distributor from whom it was purchased or you may contact CETCI directly.
Prior to shipping equipment to CETCI, contact our oce for an RMA #. All returned goods
must be accompanied with an RMA number.
If CETCI is to do the repair work, after receiving an RMA # you may send the instrument,
prepaid, to:
Attention: Service Department
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way
Delta, BC, V4G 1M3
You must include your Returned Merchandise Authorization (RMA) number, address,
telephone number, contact name, shipping / billing information, and a description of the
defect as you perceive it. You will be contacted with a cost estimate for expected repairs,
prior to the performance of any service work. Pack the equipment well (in its original packing
if possible), as we cannot be held responsible for any damage incurred during shipping to our
facility. All incurred shipping charges, duties and taxes are your responsibility.
For liability reasons, CETCI has a policy of performing all needed repairs to restore the
instrument to full operating condition.
1.4 Copyrights and Registered Trademarks
This manual is subject to copyright protection; all rights are reserved. Under international and
domestic copyright laws, this manual may not be copied or translated, in whole or in part, in
any manner or format, without the written permission of CETCI.
All software which CETCI utilizes and / or distributes holds a proprietary interest and is also
subject to copyright protection and all rights are reserved. No party may use or copy such
software in any manner or format, except to the extent that CETCI grants them a license
to do so. IF SOFTWARE IS BEING LOADED ONTO MORE THAN ONE COMPUTER, EXTRA
SOFTWARE LICENSES MUST BE PURCHASED.
Modbus® is a registered trademark of Gould Inc. Corporation. BACnet® is a registered
trademark of American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE).

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Rev. C | 2021.12 FCS - Installation Manual
1.5 Disclaimer
Under no circumstances will CETCI be liable for any claims, losses or damages resulting
from or arising out of the repair or modication of this equipment by a party other than
CETCI service technicians, or by operation or use of the equipment other than in accordance
with the printed instructions contained within this manual or if the equipment has been
improperly maintained or subjected to neglect or accident. Any of the foregoing will void the
warranty.
Under most local electrical codes, low voltage wires cannot be run within the same conduit
as line voltage wires. It is CETCI policy that all wiring of our products meet this requirement.
It is CETCI policy that all wiring be within properly grounded (earth or safety) conduit.
1.6 Revisions
This manual was written and published by CETCI. The manufacturer makes no warranty or
representation, expressed or implied including any warranty of merchantability or tness for
purpose, with respect to this manual.
All information contained in this manual is believed to be true and accurate at the time
of printing. However, as part of its continuing efforts to improve its products and their
documentation, the manufacturer reserves the right to make changes at any time without
notice. Revised copies of this manual can be obtained by contacting CETCI or visiting www.
critical-environment.com.
Should you detect any error or omission in this manual, please contact CETCI:
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada
Toll Free: +1.877.940.8741
Telephone: [phone]
Email: [email protected]
Website: www.critical-environment.com
In no event will CETCI, its ocers or employees be liable for any direct, special, incidental
or consequential damages resulting from any defect in any manual, even if advised of the
possibility of such damages.

8 © 2021 All rights reserved. Data subject to change without notice.
FCS - Installation Manual Rev. C | 2021.12
2 INTRODUCTION
2.1 General Description
NOTE: The FCS Installation Manual outlines the basic features and functionality of the FCS
and includes information about installing and wiring the system. If you require more in
depth information about how the FCS can be congured (channels, relays, strobe/audible
and analog input and output settings), using passcodes, logic and priority settings and the
Modbus® holding registers, please download the FCS Operation Manual from our website.
Thank you for purchasing our FSC Flexible Control System. The FCS Flexible Control System
is a sophisticated, high performance controller that offers multi-channel congurations for
monitoring toxic, combustible and refrigerant gases with versatile control functionality for
non-hazardous, non-explosion rated, commercial and light industrial applications. The FCS is
designed to accept inputs from digital and/or analog transmitters and/or Peripheral Devices
(in various combinations), using Modbus® RTU RS-485 or 4-20 mA analog input.
The FCS is available in 4 channel, 8 channel, 32 channel and 128 channel models with
either Modbus® RTU RS-485 WAN output or with BACnet® MS/TP RS-485 WAN output for
communicating with a Building Automation System (BAS).
All models include, four congurable SPDT dry contact relays with eld congurable time
delays and trigger levels, a full colour LCD resistive touch screen with LED panel indicating
congurable channel alarm status, relay status and fault conditions, extensive menu system
with password protection, enhanced logic control, priorities/zoning capabilities, a USB port
for rmware upgrades, data logging and a door-mounted, audible alarm. The FCS has exible
conguration settings for analog outputs and supports 4-20 mA and Modbus® driven VFDs.
2.2 Key Features
• A 1/4 VGA full colour, resistive touch LCD display with an LED panel for alarm status
fault conditions
• Extensive menu system with password protection
• Has a USB port for in the eld rmware upgrades and data logging downloads
• Congured with either a Modbus® RTU RS-485 or a BACnet® MS/TP RS-485 digital
output signal for WAN communications (for communicating with a BAS)
• Supports Modbus® driven VFDs
• Flexible conguration of analog outputs
• Enhanced logic control, zoning and priority structure capabilities
• With the optional Analog Output board(s) (Option -AO or -2AO) installed, the FCS can
be congured to have up to 8 internal 4-20 mA outputs* for VFD control or usable by
any other device requiring a signal representing the levels of gases detected
• With the optional Analog Input board(s) (Option -AI or -2AI) installed, the FCS can be
congured to have up to 8 internal analog inputs*
• A door mounted, loud audible alarm that is ideal for noisy environments.
• Four 5-amp SPDT dry contact relays with eld congurable time delays and trigger
levels

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Rev. C | 2021.12 FCS - Installation Manual
• Two horn/strobe output drives
• Additional application specic options include: enclosure door lock and key, a top
mounted strobe, internal heater and a water tight, door mounted audible alarm.
• The FCS can be connected to a remote strobe/horn combo, an RDM Remote Display
Module, and the following peripheral devices: LNK-AO Analog Output, LNK-AI Analog
Input, LNK-XT Network Extender, RLY-4 Remote Relay, RLY-8 Remote Relay and RPS-
24VDC Remote Power Supply.
• Six conduit entry ports
• Thermal resetting fuses
• RoHS compliant circuit boards
* The maximum number of combined INTERNAL analog inputs and analog outputs is 4 of
each.
If after reading through the manual you have any questions, please do not hesitate to contact
our service department for technical support.
3 INSTRUMENT SPECIFICATIONS
3.1 Technical Specications
GAS TYPE
No internal gas sensors
MECHANICAL
Enclosure
ABS / Polycarbonate, rated UL94-HB. Copper coated interior to
reduce RF interference. IP54 rating with door mounted, water
tight buzzer installed.
Weight 1.8 kg / 4 lbs
Size 254 mm x 226 mm x 113 mm / 10 in x 8.9 in x 4.44 in
USER INTERFACE
Display
8.1 cm / 3.2 in graphic, 1/4 VGA full colour resistive touch LCD
display and LED indicators for “POWER”, “STATUS 1, 2 and 3” ,
“FAULT”
INPUT/OUTPUT
Inputs
- Modbus® RTU RS-485
- 4 or 8 internal 4-20 mA analog inputs (Option -AI or -2AI)
- Peripheral devices on Modbus® RTU RS-485 network

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FCS - Installation Manual Rev. C | 2021.12
Outputs
- Modbus® RTU RS-485 or BACnet® MS/TP to BAS
- 4 or 8 internal 4-20 mA analog outputs (Option -AO or -2AO)
- Remote and Peripheral devices on a Modbus® RTU RS-485
network
- 2 drive outputs for strobe/horn (0.5 Amp @ 24 VDC)
Relays (internal) 4 internal SPDT dry contact relays, rated 5A @ 240 VAC
Audible Alarm
- Standard door mounted buzzer, rated 90 dB @ 30 cm (1 ft)
- Optional door mounted water tight buzzer (Option -WA), rated
85 dB @ 60.96 cm / 2 ft
Top Mounted Strobe 24 V, 114 mm H x 76 mm dia / 4.5 in H x 3 in diameter
(Option -L)
ELECTRICAL
Power Requirement 90 - 240 VAC, 50 - 60 Hz, 75 W Line Voltage
Current Draw
Line Voltage (110 VAC)
Line Voltage (220 VAC)
Approximately 1.0 Amp
Approximately 0.5 Amp
Power Distribution Total power available to Remote and Peripheral Devices and
Options 65 W @ 24 VDC
Wiring
- VAC (line voltage) three-conductor (Line, Neutral, Ground)
shielded minimum 18 AWG stranded within conduit
- LAN Modbus®RTU RS-485 4-conductor, 16 AWG, stranded
shielded
- WAN (output to BAS): 4-conductor, 16 AWG, stranded shielded
Modbus®RTU (version 1.1b3) RS-485 or
BACnet® MS/TP (version 1 rev 14) RS-485
LAN / WAN
Communication:
Modbus®RTU over
RS-485
LAN Baud rate: 19,200 (default, congurable)
WAN Baud rate: 19,200 (default, congurable)
WAN Modbus ID: 100 (factory default)
Data bits: 8
Stop bits: 1
Parity: none
WAN Communication:
BACnet®MS/TP
Baud rate: 76,800 (default, congurable)
Base Address: 270 (factory default)
MAC Address: 100 (factory default)
Instance ID: 270100 (the Base Address x 1000 + the MAC
Address)
Data Bits: 8
Stop Bits: 1
Parity: none
Fuses Automatic resetting thermal