Product Brief - Model C1180B Omni8C RLU (24V Comm) Ribbon OP

Omni8C RLU (24V Comm) Ribbon OP

picarrow Provides reliable alarm functions for critical alarms
arrow Small, compact, surface mounted and easy to use
arrow 8 Potential Free Contact Inputs
arrow 27 Standard Alarm Sequences
arrow Fully “DIP” Switch Configurable
arrow 24Vdc Powered
arrow Normally Open/Closed Selectable via “DIP” Switch
arrow Four versatile Group Alarm output contacts
arrow Display connected via ribbon cable
arrow Certified to IEC61508 SIL1 Safety Standard
arrow UK Nuclear Industry SIL1 EMPHASIS Assessed

Omni8C - Remote Logic Unit, 8 Potential Free Contact Input annunciator no display. Display connected via ribbon cable.


The Omni8C RLU is a full function alarm annunciator logic module for 8 alarm points. Interconnect up to 16 modules together to produce an alarm annunciator up to 128 points. Connect to remote alarm displays such as the Omniflex Model C1670 or C1496 series Displays for a complete window alarm annunciator system, or wire to individual mimic lights to provide full critical alarm functionality to your mimic display. 

The 8 inputs accept potential free inputs and are individually “DIP” switch configured for N.O. or N.C. operation. 

Alarm Sequences 
The alarm sequence for the 8 inputs can be configured by DIP switch with a choice of 27 standard sequences. More individualised or advanced settings are done through the programming port accessible on the unit using the free Omniset Configuration Utility. 

Control Pushbuttons 
Test, Silence, Acknowledge and Reset Pushbutton input terminals are provided for a wide variety of control options. 

Group Alarm Functions 
The four common output relays can be configured as group alarm, horn output and watchdog. Functions such as Relay follows input or alarm, Multiple Re-flash, or Ring-back horn are easily settable on these relays. An Inhibit input function is provided which disables all 
the inputs on the annunciator, for example during plant startup or shutdown periods.
Optional Communications Serial Port 
An optional RS232/485 serial port can be fitted to allow all alarm functions to be accessed from your PLC or SCADA using the popular Modbus protocol. 

Optional High Power Lamp Driver Outputs 
A version of this product is available equipped with high power lamp drivers. These drivers can source 24Vdc up to 250 mA, with short circuit protection, to drive higher power mimic lights, or large alarm displays. 

Further Literature 
SIL1 Information
Omni8/16C Certified SIL1 Alarm Annunciators
Full specifications and Order Information
Declaration of Conformity
Compliance Specifications
RoHS Compliance Certificate
RoHS Compliance Certificate with a list of RoHS Compliant Products
Related Products
 List of Omni16 Annunciators & RLUs
See the full list of Omni16 Alarm Annunciators and Displays
 Other Omni8 (8-point) Annunciators
See the full list of Omni8 Alarm Annunciators and Displays
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