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

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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
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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

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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.

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Additional options include:
Integral control pushbutton station to minimise installation space and cost.
Fully isolated RS232/422/485 Modbus© compatible serial port to interface to PLC, DCS, or SCADA
systems.
Internal input repeat relays to minimise field wiring when also connecting inputs to other systems.
A Software Configuration Utility for more advanced customisation.
Figure 1-1 –The Omni8C Panel Mount 8point
Alarm Annunciator/Display.
Figure 1-2 –The Omni16C 16 point Panel
Mount Alarm Annunciator/Display.
Figure 1-3 –The Omni8C Remote Logic Unit
Figure 1-4 –The Omni16C Remote Logic
Unit
Figure 1-5 –The Omni8P Panel Mount 8point
Alarm Annunciator with integral controls
Figure 1-6 –The Omni16C Intrinsically-Safe
Integral Annunciator (Ex ic, Zone 2)

Omni8/16C/Omni8P User Manual
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2General Description
2.1 Standard Features
Standard 8 and 16 point modules allow systems from 8 to 256 alarm points to be constructed by the
user.
Integral or Remote Alarm Logic for maximum flexibility.
8 points of alarm/display in 120mm high by 144mm wide size modules to minimise panel space.
(16 point module is 120mm x 288mm wide)
All products in the range are supplied off-the-shelf with no factory customisation required,
minimising spares holding.
Panel mounted display options include long-life incandescent lamps, high-bright back-lit LED’s and
the unique “side-bar” LED system pioneered by OMNIFLEX.
User-created display legends on standard laser/inkjet printer using software templates supplied –
no window engraving required.
Relay outputs for common group alarm and external audible device control.
Integral hardware watchdog relay for safety critical applications.
Removable terminals for easy installation and maintenance.
Wetting voltage supplied to the inputs to allow potential free input contacts to be directly
connected.
Switch selectable Normally Open or Normally Closed input contact sense selection while installed.
No dismantling required.
27 switch selectable alarm sequences built in covering most alarm annunciator specifications and
configurations.
24Volt dc powered (Some models also available in 85-264Vac options).
2.2 Options Available
Integral power supply for direct connection to 48Vdc or 85-264Vac or dc.
Internal input repeat relays to minimise field wiring when also connecting inputs to other
systems.
Fully isolated RS232/422/485 Modbus compatible serial port to interface to PLC, DCS, or
SCADA systems.
Advanced Software Configuration Utility to configure the Omni8/16C in “SOFT-SET” mode for
more specialised applications.

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2.3 Product Feature Chart
The following feature chart describes the features available in the product you have purchased. Refer to
the product descriptions in the SCOPE section at the front of this manual if necessary.
Model
Integral Display
Wall mount
Panel Mount
No. of Alarm/
display Points
Backlit Incand.
Display
Backlit LED
Display
Sidebar LED
Display
No. of Input
Contacts
Common
Services
Serial Port
Input Repeat
Relays
Rem Display/ I/P
Repeats
Integral Alarm
Logic
C1479
N
Y
N
16
N(1)
N
N
16
Y
O
N(3)
Y(2)
Y
C1480
Y
N
Y
16
N
Y
N
16
Y
O
O
O(3)
Y
C1480-Ex
Y
N
Y
16
N
Y
N
16
Y
N
N
O(3)
Y
C1481
Y
N
Y
16
N
N
Y
16
Y
O
O
O(3)
Y
C1482
Y
N
Y
16
Y
N
N
16
Y
O
O
O(3)
Y
C1483
Y
N
Y
16
N
Y
N
0
O
Y
O
O(3)
Y
C1484
Y
N
Y
16
N
N
Y
0
O
Y
O
O(3)
Y
C1485
Y
N
Y
16
Y
N
N
0
O
Y
O
O(3)
Y
C1486
N
N
Y
16
N
Y
N
0
N
N
N
N/A
N
C1487
N
N
Y
16
N
N
Y
0
N
N
N
N/A
N
C1488
N
N
Y
16
N
N
Y
0
N
N
N
N/A
N
C1489
N
N
Y
16
N
Y
N
0
N
N
N
N/A
N
C1490
Y
N
Y
8
N
Y
N
8
Y
O
O
O(3)
Y
C1491
Y
N
Y
8
N
N
Y
8
Y
O
O
O(3)
Y
C1492
Y
N
Y
8
Y
N
N
8
Y
O
O
O(3)
Y
C1493
Y
N
Y
8
N
Y
N
0
O
Y
O
O(3)
Y
C1494
Y
N
Y
8
N
N
Y
0
O
Y
O
O(3)
Y
C1495
Y
N
Y
8
Y
N
N
0
O
Y
O
O(3)
Y
C1496
N
N
Y
8
N
Y
N
0
N
N
N
N/A
N
C1497
N
N
Y
8
N
N
Y
0
N
N
N
N/A
N
C1498
N
N
Y
8
N
N
Y
0
N
N
N
N/A
N
C1499
N
N
Y
8
N
Y
N
0
N
N
N
N/A
N
NOTES
1. Y = Provided as standard; N = Not available; O = Option ordered separately. [Do not confuse with 0
(zero) in “No. of Input Contacts” column]
2. The Remote Display/Input Repeat Option provides two 20 way ribbon header connectors. One
connector provides 16 open collector transistor outputs from the lamp drivers, and the other
provides 16 open-collector transistor outputs as input repeat signals. This option should be
installed to provide compatibility with the previous Omni16A and Omni16B product ranges.
3. Input Repeat Relays cannot be installed together with the Remote Display/Input Repeat option,
which is equipped with open-collector transistor input repeat outputs. These may be connected to
an external relay module.

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2.4 Front View of 16 point Panel Mount Units showing Display Layout and numbering
1
5
9
13
2
6
10
14
3
7
11
15
4
8
12
16
Optional Pushbutton Station
inserted in this position
Figure 2-1 –Panel Mount Omni16C Front View showing Window Numbers
2.5 Front View of Omni8C Panel Mount Units showing Display Layout and numbering
Figure 2-2 –Panel Mount Omni8C Front View showing Window Numbers
2.6 Front View of Omni8P Panel Mount Unit showing Display Layout and numbering
Figure 2-3 –Panel Mount Omni8P Front View showing Window Numbers
7
5
8
6
3
1
4
2
Optional Pushbutton Station
inserted in this position
5
1
6
2
7
3
8
4

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 15 © Omniflex 2021
2.7 Rear View of Omni16C 16 point units showing Terminal Layout
Figure 2-4 –Omni16C Rear View
0V
+24V
PROG
PORT
SW1 SW2
RxTxPwr
SERIAL
PORT
INPUTS 1-8
ON=N.C. OFF=N.0.
B
A
INPUTS 9-16
ON=N.C. OFF=N.0.
C
NO
RL1 RL2
C
NO
RL3
C
NC
NO
RL4
C
NC
NO
COM
ACK
RES
PUSHBUTTONS
INH
TST
SIL
FO
EXPAND
FS
NO
RR 1
C
RR 2
C
NO
C
RR 3
C
NO
RR 4
NO
NO
C
RR 5
C
NO
RR 8
RR 7
RR 6
NO
C
C
NO
C
RR 12
NO
RR 9
C
RR 10 RR 11
C
NO
NO
C
RR 13 RR 14
NO
NO
C
C
NO
RR 16RR 15
C
NO
C
NO
INPUT REPEATSLAMP REPEATS
Omni16c
IP1 IP2
A
B
IP4
IP3
A
B
B
A
IP8
IP7
IP6IP5
A
B
B
B
B
A
A
A
IP16IP15
IP14
IP13
IP12IP11
IP10IP9
A
A
B
B
B
B
A
A
A
B
A
A
B
B
B
A
A B CD E F
INPUTS INPUTS SERVICES REPEATS REPEATS
RIBBON HEADER
8
3
4
5
7
6
11
9
10
12
13
16
15
14
17
18
1
2
1
2
3
4
5
6
7
8
10
9
11
15
13
12
14
16
10
2
1
3
7
5
4
6
8
9
12
11
13
15
14
16
8
3
1
2
4
5
7
6
11
9
10
12
13
16
15
14
11
10
12
13
16
15
14
7
2
1
3
4
6
5
8
9
1
2
1
2
3
P
POWER
Inputs 1-8
Repeats 9-16
+24Vdc Common
Services
Inputs 9-16
Repeats 1-8
ON21 8543 76
ON21 8543 76
ON21 8543 76
ON21 8543 76

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 16 © Omniflex 2021
2.8 Rear View of Omni8C 8 point units showing Terminal Layout
Figure 2-5 –Omni8C Rear View
IP8
IP7
IP6IP5
IP4
IP3
IP2IP1 INPUTS 1-8
ON=N.C. OFF=N.0.
A
Tx
A
B
B
B
B
A
A
A
B
+24V
0V
PROG
PORT
Pwr
A
A
B
B
B
A
SERIAL
PORT
Rx SW1 SW2
RR 4
CC
C
RL2
NO
RL1
C
RL3
NO
C
NO
NC
RR 1
NO
C
RR 3
2
C
NO
NO
C
PUSH
BUTTONS
COM
NO
NC
RL4
RES
ACK
INH
SIL
TST
FS
FO
EXPAND
RR 6RR 5
NO
NO
C
C
NO
RR 8
7
C
NO
C
NO
RIBBON HEADER
LAMP REPEATS INPUT REPEATS
A B CD
Omni8c
INPUTS REPEATS SERVICES
11
10
12
13
16
15
14
10
2
1
3
7
5
4
6
8
9
12
11
13
14
15
16
8
7
1
23
2
1
2
1
4
5
7
6
3
4
6
5
11
9
10
12
13
8
9
16
15
14
17
18
Inputs 1-8
Repeats 1-8
24Vdc Common
Services
ON21 8
54
37
6
ON21 8543 76
ON21 8
54
37
6

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 17 © Omniflex 2021
2.9 Rear View of Omni8P 8 point units showing Terminal Layout
Figure 2-6 –Omni8P Rear View
INPUTS
Omni8P
B
POWER
PA
IP3
A
B
IP1
B
B
A
IP2
B
IP5
A
B
IP4
A
B
A
IP6 INPUTS 1-8
ON=N.C. OFF=N.0.
A
A
B
IP7 IP8
A
PROG
PORT
0V
+24V
Pwr RxTx
SERIAL
PORT
SW1 SW2
C
RIBBON HEADER
C
RR 5
RR 2
C
SERVICES
RL1
NO
C
OC
GND
RL2
RR 1
NO
NC
RL3
NO
NC
C
RL4
RR 3 RR 4
LAMP REPEATS
C
REPEATS
NO
C
C
NO
NO
NO
C
HORN IN
PUSHBUTTONS
ACK
RES
COM
SIL
TST
RR 6 RR 7
FS
FO
EXPAND
D
RR 8
INPUT REPEATS
C
NO
NO
C
C
NO
NO
E
ON21 8543 76
16
14
12
13
15
10
2
1
3
ON21 8
54
37
6
6
2
1
4
3
5
9
8
7
11
2
1
ON21 8543 76
9
10
5
2
1
4
3
9
6
7
8
1
2
3
5
4
6
8
7
16
14
15
13
12
11
18
17 15
12
10
11
13
14
16

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 18 © Omniflex 2021
3Mechanical Installation
3.1 Panel-mount Mechanical Dimensions
Figure 3-1 –Panel Mount Omni16C and Omni8P Mechanical Dimensions
Figure 3-2 –Panel-mount Omni8C Mechanical Dimensions
288.0 mm [11.34"]
120.0 mm [4.72"]
120.0 mm [4.72"]
JACKING BAR
SIDEBAR LED VERSION
INCADESCENT LAMP OR BACKLIT LED VERSION
Cut-out Dimensions
280mm(11.02") wide x 112mm(4.41") high
105.0 mm [4.14"]
Allowed Panel Thickness
1.6mm(0.0625") to 9mm(0.334")
108.0 mm [4.25"]
144.0 mm [5.67"]
108.0 mm [4.25"]
105.0 mm [4.14"]
Allowed Panel Thickness
1.6mm(0.0625") to 9mm(0.334")
108.0 mm [4.25"]
105.0 mm [4.14"] INCANDESCENT LAMP OR BACKLIT LED VERSION
SIDEBAR LED VERSION
JACKING BAR
120.0 mm [4.72"] 120.0 mm [4.72"]

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 19 © Omniflex 2021
3.2 Wall-mount Mechanical Dimensions
Figure 3-3 –Wall-mount Omni16C Standard housing (Models C1478, C1479)
Figure 3-4 –Wall-mount Omni8C/16C Compact housing (Models C1180/1/2/3/4/5)
3.3 Introduction to Panel Mounting
The panel mount Omni8/16C may be mounted either as a single unit, or as one of a combination of
multiple units stacked together in a single panel cut-out.
In both single and multiple mounting of units, the securing of the Omni16C’s to the user’s panel is effected
by using “jacking bars” supplied with the Omni16C.
These jacking bars fit into slots set in the top, bottom and sides of the Omni8/16C. The location of these
slots is shown in Figure 3-5 –Jacking Bar location slots.
.
INPUTS 1-8
ON=N.C. OFF=N.0.
Power
Supply
Omni16c
13A5A
Tx
1A
1B
2B 9A
9B
10B
4B
3B
2A
3A
4A
5B
12B
11B
10A
11A
12A
13B
+24V
0V
PROG
PORT
Pwr
7A
6A
6B
7B
8B
8A
15A
14A
14B
15B
16B
16A
INPUTS 9-16
ON=N.C. OFF=N.0.
SERIAL
PORT
Rx SW1 SW2
RR 4
C
C
C
RLY 2
NO
RLY 1
C
RLY 3
NO
C
NO
NC
RR 1
NO
C
RR 3
RR 2
C
NO
NO
C
PUSHBUTTONS
C
NO
NC
RLY 4
RES
ACK
LT
SIL
CT
FS
FO
EXPAND
RR 6RR 5
NO
NO
C
C
NO
RR 7 RR 8
C
NO
C
NO
WITH RIBBON
HEADER BOARD
RR 12
C
LAMP REPEATS
RR 9
NO
C
NO
NO
RR 10 RR 11
C
C
INPUT REPEATS
NO
NO
NO
RR 13 RR 14
C
C
NO
NO
RR 16RR 15
C
C
LAMPS
79.0 mm [3.11"]
105.0 mm [4.14"]
108.0 mm [4.25"]
276.0 mm [10.87"]
300.0 mm [11.81"]
290.0 mm [11.42"]
108.0 mm [4.25"]
58.0 mm [2.28"]
4 Holes Ø 4.76
1010
3
1
22
1
3
7
5
4
6
8
9
2
1
3
7
5
4
6
8
9
12
11
13
14
15
16
13
11
12
16
14
15
1
2
8
3
1
2
4
5
7
6
11
9
10
12
13
16
15
14
17
18
77
22
1 1
3
4
6
5
3
4
6
5
10
8
9
11
12
10
8
9
11
12
15
14
13
16 15
14
13
16
INPUTS 1-8
ON=N.C. OFF=N.0.
SERIAL
PORT
14B
6B
10A
2A
1B
1A
2B
9B
9A
10B
4A
3A
3B
4B
5B
5A
12A
11A
11B
12B
13B
13A
+24V
0V
Pwr Tx
7A
6A
7B
8A
8B 15A
14A
15B
16A
16B
INPUTS 9-16
ON=N.C. OFF=N.0.
LAMPS
Rx SW1 SW2
RLY 4
NC
RLY 2
C
NO
RLY 1
C
PROG
PORT
RLY 3
NC
NO
C
NO
C
SIL
PUSHBUTTONS
NO
C
RES
ACK
FS
EXPAND
CT
LT
FO
132.0 mm [5.20"]
156.0 mm [6.14"]
108.0 mm [4.25"]
58.0 mm [2.28"]
146.0 mm [5.75"]
105.0 mm [4.14"]
79.0 mm [3.11"]
108.0 mm [4.25"]
4 Holes Ø 4.76
1010
2
1
3
7
5
4
6
8
9
2
1
3
7
5
4
6
8
9
12
11
13
14
15
16
13
11
12
16
14
15
8
3
1
2
4
5
7
6
11
9
10
12
13
16
15
14
17
18
1
2

Omni8/16C/Omni8P User Manual
UMC1480R24.pdf 20 © Omniflex 2021
Generally the use of 2 jacking bars on the top and two jacking bars on the bottom is sufficient securing for
unit in the panel, but this may vary from panel to panel.
To ensure secure operation of the jacking bars, the user’s panel thickness should fall between 1,6 mm
(0,0625”) and 9,0 mm (0,354”).
Figure 3-5 –Jacking Bar location slots
3.4 Panel Mounting Multiple Units in a single cut-out
3.4.1 Mounting Procedure
Up to 16 Omni8/16C units may be electrically connected together to form a display/annunciator
system of up to 256 points. These units may be mounted in the same panel cut-out as follows:
1. Fasten together the multiple units into individual columns of the required height using the
optional Mounting Bar Kits (available separately –see section 3.4.4).
Up to 4 Omni8C’s or Omni16C’s may be stacked together into a single column, as shown in
Figure 3-6 . Figure 3-6 –Vertical Stacking Arrangement. Omni8Cs and Omni16Cs may not be
mixed in the same vertical stack.
2. Mount the pre-assembled vertical stacks of Omni8/16Cs side-by-side in the panel cut-out by
using 4 jacking bars per stack, as shown in Figure 3-6.
(Apart from the panel itself, there is no mechanical connection between these vertical stacks).