Omniflex Omni8C Series User manual

Omni8C/16C/Omni8P Series
Alarm Annunciators & Serial Displays
User Manual
Revision 24

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 2 © Omniflex 2021
Scope
This User Manual provides information necessary to install, configure and operate your Omni8s or Omni16Cs.
Date
Revision
Comments
Sep 1999
1
Initial revision
Feb 2000
2
Revised with corrections for product release
Mar 2000
3
Minor typographical errors corrected
July 2000
4
Updated Modbus Interface related content
July 2000
5
Updated with new timer operation
Sep 2000
6
Updated to reflect latest features of V5.xx software kernel
Oct 2000
7
Include Repeat Output functions and DIT Rev 3 changes.
Dec 2000
8
Various Amendments, Input connections for OV comm,
June 2001
9
Amended Softset DIP setting error. Drawing amendments
Oct 2001
10
Block Diag terminal no’s corrected Sequence 14 Added
Aug 2003
11
Include Repeat as GA functions and DIT Rev 6 changes.
July 2006
12
Omni8P version added to the manual
Nov 2006
13
Modbus Addressing enhanced from V8.02 firmware.
Aug 2009
14
Non-Spark EXN annunciator added
Dec 2010
15
Updated to reflect changed operation of Repeat Relay boards
Feb 2013
16
Updated to correctly describe default operation of the Repeat Relays
Mar 2013
17
Updated Ex certification information to Ex ic
Feb 2014
18
Functional Safety Manual added
Apr 2016
19
Updated Figures 3-12 &13, sequence 18, corrected C1163 & added C1169
wiring details and Isolated High Voltage Input Cards, added humidity
readings in specs
Aug 2016
20
LED Board insertion and removal images added.
Oct 2016
21
Missing consumptions for Omni8P and note 2 in Table 3-1, incorrect
footer.
Oct 2017
22
Added block diagram for Omn16C Ex & IP65 Front Covers, updated both
Scope of Displays and Product Feature Chart and updated to new style
Nov 2017
23
Updated front cover photo to Backlit only
Aug 2021
24
Reverse polarity with respect to the Omni16C Ex version clarified.
Information for alternative input options included.

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 3 © Omniflex 2021
This manual covers the following product Model Numbers below but not all features described in this manual
are necessarily available on the product you have purchased. See section 2.3 for details of these options.
Model
Description
Picture*
8 Point Remote Displays (with ribbon header inputs):
C1496A
Omni8C Remote Display with Backlit Display (No lamps or LEDs)
Figure 1-2
C1497A/8A
Omni8C Remote Display with Sidebar Display
-
C1499A
Omni8C Remote Display with Backlit Display (with lamps)
Figure 1-2
16 Point Remote Displays (with ribbon header inputs):
C1486A
Omni16C Remote Display with Backlit Display (No lamps or LEDs)
Figure 1-1
C1487A/8A
Omni16C Remote Display with Sidebar Display
-
C1489A
Omni16C Remote Display with Backlit Display (with lamps)
Figure 1-1
8 Point Remote Logic Units (separate display required):
C1180
Omni8C Remote Logic Unit Ribbon Header O/P
Figure 1-3
C1181
Omni8C Remote Logic Unit Lamp Driver O/P
Figure 1-3
16 Point Remote Logic Units (separate display required):
C1478
Omni16C Remote Logic annunciator with Lamp Driver Outputs
Figure 1-4
C1479
Omni16C Remote Logic annunciator with Ribbon Header Outputs
Figure 1-4
C1182
Omni16C Remote Logic Unit in compact housing
Figure 1-3
C1184
Omni16C Serial Input Remote Logic Unit Ribbon Header O/P
Figure 1-3
C1185
Omni16C Serial Input Remote Logic Unit Lamp Driver O/P
Figure 1-3
8 Point Panel Mount Integral Alarm Annunciators:
C1490B
Omni8C annunciator with backlit LED display
Figure 1-1
C1491B
Omni8C annunciator with sidebar LED display
-
C1492B
Omni8C annunciator with incandescent lamp display
Figure 1-1
C1493B
Omni8C serial input annunciator with backlit LED display
Figure 1-1
C1494B
Omni8C serial input annunciator with sidebar LED display
-
C1495B
Omni8C serial input annunciator with incandescent lamp display
Figure 1-5
C1427A
Omni8P Backlit LED annunciator with integral pushbuttons & audible
Figure 1-5
C1428A
Omni8P Sidebar LED annunciator with integral pushbuttons & audible
-
C1429A
Omni8P Incandescent lamp annunciator with integral p/buttons & audible
Figure 1-5
16 Point Panel Mount Integral Alarm Annunciators:
C1480B
Omni16C annunciator with backlit LED display
Figure 1-2
C1481B
Omni16C annunciator with sidebar LED display
-
C1482B
Omni16C annunciator with incandescent lamp display
Figure 1-2
C1483B
Omni16C serial input annunciator with backlit LED display
Figure 1-2
C1484B
Omni16C serial input annunciator with sidebar LED display
-
C1485B
Omni16C serial input annunciator with incandescent lamp display
Figure 1-2
16 Point Intrinsically-Safe Integral Alarm Annunciators Ex ic:
C1480B-EX
Omni16C annunciator with backlit LED display
Figure 1-6
* Pictures are for reference only. Some details may change between models.

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 4 © Omniflex 2021
COPYRIGHT AND PROTECTIVE NOTICES
1. The Copyright of this document and the associated drawings, is the property of Omniflex and is
issued on condition that it is not copied, reprinted or reproduced or transmitted in any form or
by any means, electronically, photocopying, mechanical or otherwise, nor its contents
disclosed, either wholly or in part, without the consent in writing of, or in accordance with the
conditions of a contract with Omniflex.
2. The publication of information in the document does not imply freedom from patent or other
protective rights of Omniflex or others.
3. Although every intention is made to ensure that performance figures and data are accurate the
company reserves the right to alter without notice any product or specification. Performance
figures and data must therefore be specifically confirmed by the company before they become
applicable to any tender, order or contract.
4. In the case of electrical components, enough data is included in the drawings to allow
maintenance of the equipment. However, if component availability or substitution information
is required please consult the factory for assistance, as it is impossible to include data on every
component in this document.
5. This product is sold without liability for consequential loss of any description.

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 5 © Omniflex 2021
Table of Contents
Scope ..............................................................................................................................................................................2
Table of Contents .........................................................................................................................................................5
Table of Figures ............................................................................................................................................................8
1Introduction........................................................................................................................................................ 10
2General Description ...........................................................................................................................................12
2.1 Standard Features ..............................................................................................................................12
2.2 Options Available.................................................................................................................................12
2.3 Product Feature Chart........................................................................................................................13
2.4 Front View of 16 point Panel Mount Units showing Display Layout and numbering ............14
2.5 Front View of Omni8C Panel Mount Units showing Display Layout and numbering ............14
2.6 Front View of Omni8P Panel Mount Unit showing Display Layout and numbering...............14
2.7 Rear View of Omni16C 16 point units showing Terminal Layout..............................................15
2.8 Rear View of Omni8C 8 point units showing Terminal Layout...................................................16
2.9 Rear View of Omni8P 8 point units showing Terminal Layout...................................................17
3Mechanical Installation.....................................................................................................................................18
3.1 Panel-mount Mechanical Dimensions ............................................................................................18
3.2 Wall-mount Mechanical Dimensions ..............................................................................................19
3.3 Introduction to Panel Mounting .......................................................................................................19
3.4 Panel Mounting Multiple Units in a single cut-out....................................................................... 20
3.4.1 Mounting Procedure .............................................................................................................. 20
3.4.2 Multiple Unit Cut-Out Size......................................................................................................21
3.4.3 Example Cut-out Size Calculation........................................................................................21
3.4.4 Mounting Bar Kits....................................................................................................................22
3.5 Mounting a single Omni8/16C in a panel cut-out .........................................................................22
3.6 Intrinsically-Safe Annunciator Mechanical Mounting ..................................................................22
3.6.1 Installation Requirements .....................................................................................................22
3.7 IP65 Front Cover Mechanical Mounting.........................................................................................23
3.7.1 Omni16 IP65 Front Cover Mounting Detail (C1433).........................................................24
3.7.2 Omni8 IP65 Front Cover Mounting Detail (C1434) ...........................................................24
3.8 Installing the Internal Pushbutton Station .....................................................................................25
3.9 Installing Back-lit LED boards ...........................................................................................................25
3.10 Removing Back-lit LED boards .........................................................................................................26
3.11 Creating Window Legends for Back-lit Display Windows............................................................27
3.11.1 Overview....................................................................................................................................27
3.11.2 Creating the Legend Film.......................................................................................................27
3.12 Inserting Legends and Colour Filters into Back-lit Display Windows........................................28
3.12.1 Colour of Windows..................................................................................................................28
3.12.2 Assembling Backlit Display Windows .................................................................................28
3.12.3 To remove a Window..............................................................................................................29

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3.12.4 To refit a window.....................................................................................................................29
3.13 Creating Window Legends for Sidebar Display Windows. ..........................................................29
4ELECTRICAL INSTALLATION.......................................................................................................................... 30
4.1 Introduction ......................................................................................................................................... 30
4.2 Omni8C Block Diagram..................................................................................................................... 30
4.3 Omni8P Block Diagram ......................................................................................................................31
4.4 Omni16C Block Diagram....................................................................................................................32
4.5 Intrinsically Safe (Ex ic) Omni16C-Ex Block Diagram...................................................................33
4.6 Omni8C/8P/16C Terminal Schedule ...............................................................................................34
4.7 Omni8C/8P/16C Serial Port Pinouts to PC or PLC .......................................................................39
4.8 Power Requirements ......................................................................................................................... 40
4.9 Connecting the Power Supply ..........................................................................................................42
4.9.1 With no Internal Power Supply Installed (24Vdc non Ex versions)................................42
4.9.2 With the Optional Internal Power Supply installed (non Ex versions) ...........................42
4.9.3 Omni16C Intrinsically Safe Version (Ex ic) .........................................................................43
4.9.4 24Vdc Power externally available (non Ex versions only) ...............................................43
4.10 Connecting the alarm inputs.............................................................................................................44
4.10.1 With Potential Free Contacts ................................................................................................44
4.10.2 With Optional Isolated Input Card ........................................................................................45
4.10.3 With Optional High Voltage Input Cards .............................................................................46
4.10.4 Ribbon Header Input Cards ...................................................................................................46
4.11 Connecting the Common Service Relay Contacts .......................................................................46
4.11.1 Switch Set Mode......................................................................................................................47
4.12 Connecting Control Pushbuttons ....................................................................................................47
4.12.1 Controlling a single Omni8/16C with internal pushbuttons............................................47
4.12.2 Controlling a single Omni8/16C with external pushbuttons...........................................47
4.12.3 Controlling multiple Omni8/16C’s with external pushbuttons .......................................48
4.12.4 Controlling multiple Omni8/16C’s with an Integral Pushbutton Station ......................48
4.12.5 Controlling multiple Omni8C/16C’s with an Omni8P Alarm Annunciator ....................49
4.13 Connecting the C1415 Remote Pushbutton Station....................................................................49
4.14 Connecting the Omni8P Internal Audible Device ......................................................................... 50
4.15 Connecting the Omni8P Internal Audible Device to other Omni8/16C's ................................. 50
4.16 Connecting the C1169 Lamp Driver board outputs......................................................................51
4.17 Connecting the Inhibit Input..............................................................................................................51
4.18 Connecting the optional Input Repeat Relay Contacts (Model C1425)....................................51
4.19 Connecting the optional Ribbon Header Outputs (Model C1426) .............................................52
4.20 Synchronising flashing between multiple Omni8/16C's .............................................................54
4.21 Expanding First-Out Groups between multiple Omni8/16C's.....................................................54
4.22 Electrical Installation Requirements for Intrinsically Safe Annunciators.................................54
5Configuring the Omni8/16C for Operation....................................................................................................55
5.1 Introduction ..........................................................................................................................................55
5.2 Modes of Operation ............................................................................................................................55

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 7 © Omniflex 2021
5.3 Selecting the Input Sense..................................................................................................................57
5.4 Selecting the alarm/display logic sequences................................................................................58
5.5 Selecting the Group Alarm Relay (RL3) Output Function............................................................61
5.6 Selecting the Inhibit Input Contact Sense......................................................................................62
5.7 Selecting the Lamp Status ................................................................................................................62
5.8 Selecting Time Delays........................................................................................................................62
5.8.1 Omni8/16C Fast and Slow Timers.......................................................................................63
5.8.2 Explanation of Timer Operation in a Timer Sequence .....................................................63
5.9 Selecting Serial Port Settings ...........................................................................................................63
5.9.1 Default Settings .......................................................................................................................63
5.9.2 Modbus Address and Mode Settings..................................................................................63
5.10 Changing the operation of the Repeat Outputs ............................................................................65
6Operation .............................................................................................................................................................66
6.1 Power up ...............................................................................................................................................66
6.2 Normal Operation................................................................................................................................66
6.3 Test Functions.....................................................................................................................................66
6.3.1 Overview of the Test Functions............................................................................................66
6.3.2 Pressing the Test Button .......................................................................................................66
6.3.3 Fault Indication on Circuit Test ............................................................................................67
6.3.4 Manually invoking the Circuit Test Function......................................................................67
6.3.5 The "Marching Sequence" Circuit Test Display .................................................................67
6.4 Use of the inhibit input .......................................................................................................................69
7FUNCTIONAL SAFETY MANUAL ................................................................................................................... 70
7.1 Function Specification ...................................................................................................................... 70
7.2 Hardware Configuration.................................................................................................................... 70
7.3 Installation Requirements .................................................................................................................71
7.4 Functional Safety Parameters..........................................................................................................71
7.5 Diagnostics...........................................................................................................................................72
7.6 Proof Test .............................................................................................................................................73
7.7 Prevention of Systematic Failures...................................................................................................74
8SPECIFICATIONS ...............................................................................................................................................75
9ALARM SEQUENCE DIAGRAMS......................................................................................................................79
10 MODBUS REGISTER LAYOUT .........................................................................................................................92

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 8 © Omniflex 2021
Table of Figures
Figure 1-1 –The Omni8C Panel Mount 8point Alarm Annunciator/Display............................................................. 11
Figure 1-2 –The Omni16C 16 point Panel Mount Alarm Annunciator/Display. ....................................................... 11
Figure 1-3 –The Omni8C Remote Logic Unit .................................................................................................................. 11
Figure 1-4 –The Omni16C Remote Logic Unit................................................................................................................ 11
Figure 1-5 –The Omni8P Panel Mount 8point Alarm Annunciator with integral controls .................................... 11
Figure 1-6 –The Omni16C Intrinsically-Safe Integral Annunciator (Ex ic, Zone 2) .................................................. 11
Figure 2-1 –Panel Mount Omni16C Front View showing Window Numbers ........................................................... 14
Figure 2-2 –Panel Mount Omni8C Front View showing Window Numbers.............................................................. 14
Figure 2-3 –Panel Mount Omni8P Front View showing Window Numbers.............................................................. 14
Figure 2-4 –Omni16C Rear View ....................................................................................................................................... 15
Figure 2-5 –Omni8C Rear View.......................................................................................................................................... 16
Figure 2-6 –Omni8P Rear View.......................................................................................................................................... 17
Figure 3-1 –Panel Mount Omni16C and Omni8P Mechanical Dimensions .............................................................. 18
Figure 3-2 –Panel-mount Omni8C Mechanical Dimensions........................................................................................ 18
Figure 3-3 –Wall-mount Omni16C Standard housing (Models C1478, C1479) ....................................................... 19
Figure 3-4 –Wall-mount Omni8C/16C Compact housing (Models C1180/1/2/3/4/5) .......................................... 19
Figure 3-5 –Jacking Bar location slots.............................................................................................................................20
Figure 3-6 –Vertical Stacking Arrangement.................................................................................................................... 21
Figure 3-7 –Omni16C Ex ic Version in protective housing........................................................................................... 23
Figure 3-8 –Omni16C IP65 Front Cover Mechanical Mounting. ................................................................................. 24
Figure 3-9 –Omni8 IP65 Front Cover Mechanical Mounting. ..................................................................................... 24
Figure 3-10 –Backlit Window Order of Assembly .......................................................................................................... 28
Figure 4-1 –Omni8C Annunciator Block Diagram showing Terminal Numbers ......................................................30
Figure 4-2 –Omni8P Annunciator Block Diagram showing Terminal Numbers ...................................................... 31
Figure 4-3 –Omni16C Annunciator Block Diagram showing Terminal Numbers.................................................... 32
Figure 4-4 –Omni16C-Ex Annunciator Block Diagram showing Terminal Numbers .............................................. 33
Figure 4-5 –RS232/485 Connector Pin-out (Omni8C/16C/8P)................................................................................... 39
Figure 4-6 –Input Connection Diagram using individually wired Potential Free Contacts. ................................... 44
Figure 4-7 –Input Connection Diagram using Common Return Wire ........................................................................ 45
Figure 4-8 –Input Connection Diagram using Isolated Input Cards (external supply) ........................................... 45
Figure 4-9 –Input Connection Diagram using High Voltage Input Cards.................................................................. 46
Figure 4-10 –External Pushbuttons controlling a single Omni8/16C ........................................................................ 47
Figure 4-11 –External Pushbuttons controlling multiple Omni8/16C’s ..................................................................... 48
Figure 4-12 –Internal Pushbutton Station controlling multiple Omni8/16C units................................................... 48
Figure 4-13 –Omn8P Annunciator controlling multiple Omni8C/16C units. ............................................................ 49

Omni8/16C/Omni8P User Manual
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Figure 4-14 –Connecting C1415 Remote Pushbutton Station to Omni8/16C units............................................... 49
Figure 4-15 –Connecting the internal Omni8P Audible Device ...................................................................................50
Figure 4-16 –Connecting Omni8P Audible to Omni16C’s.............................................................................................50
Figure 4-17 –Connecting the optional C1169 Lamp Driver Board.............................................................................. 51
Figure 4-18 –Ribbon Header Pin Layout.......................................................................................................................... 53
Figure 4-19 –Open Collector Transistor Output Arrangement .................................................................................... 53
Figure 5-1 –Setting Time Delays on SW2 ........................................................................................................................ 62
Figure 5-3 –Serial Port Settings on SW2 ......................................................................................................................... 64

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 10 © Omniflex 2021
1Introduction
The Omniflex Omni8/16C family is a range of compact, highly flexible, full function integral alarm
Annunciators and displays designed to fulfil all the requirements of the modern industrial plant.
Alarm Annunciators are a key component in the safety of the plant, and these products have been designed
with safety integrity in mind. Continuous advanced internal self-testing creates a product suitable for use in
IEC61508 SIL1 applications.
All products in the range are available “off-the-shelf” with no factory customisation required. Because these
units are not built to order, spares holding and maintenance are significantly enhanced. Standard 8 and 16
point modules allow integral systems from 8 to 256 points to be constructed by the user.
Panel mounted display options include long-life incandescent lamps, high-bright backlit LEDs and the unique
“sidebar” LED system pioneered by OMNIFLEX.
Display legends for the backlit displays are created by the user on any standard laser/inkjet printer using
software templates supplied with the product.
All popular configuration options are accomplished by switch settings on the rear of the unit. Software
programming can be used to select more advanced options.
Available in a range of power supply options, these rugged products are designed to fit directly into local
electrical panels without the need for external power conditioning or interfacing for the lowest cost system
implementation.