Alarm Annunciation System
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- <i class="fa "></i> Specifications
- <i class="fa "></i> Features
- <i class="fa "></i> Technical Specifications
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The CAN-AS series of Alarm Annunciation Systems are offered with several advanced features, which were available with only with high end control systems until now. The enhanced integrated design using latest 32 bit Micro-controller technology brings the advantage of complex programmability, lower power consumption & improved reliability to the users at reasonable costs.
The user of CAN-AS system has the option of selecting any one out of nine standard Alarm Sequences (Ref. ISA Publication*) using Programmable Sequence configuration. Special option of Multiple sequence selection and window grouping is also provided (factory set) on request.
MODBUS-RTU/ MODBUS-TCP-IP communication protocol selection is available for REMOTE monitoring and control operations.
CAN-AS-PFB variants are available with PROFIBUS slave operation capability by adding an external Canopus make PROFIBUS slave interface module.
The CAN-AS30 is offered with 30 nos. of annunciation windows. The design takes care of the control panel mounting problems faced due to restrictions on the depth and weight of the display units fitted on the panel door. The CAN-AS30 incorporates a panel front mounted lightweight Annunciation Display Module having depth of only 70mm. This is connected with a base mounted Control Module using a multi-core cable. The Control Module is fitted inside the panel and input signals and Power Supply connections can be easily wired to it. This avoids the inconvenience of running all wiring on the panel door and reduces maintenance problems.
The CAN-AS systems are also offered in 8, 12, 16, & 24 window configurations.
ISA Publications Annunciate Sequences & Specifications S18.1 1979 (Revised 1985)
All inputs to the system are 24VDC operated potential free contacts. Inputs are provided with optical isolation. This enables the system to operate without disturbance of external electrical noise.
Each input can be individually programmed to be recognized as ACTIVE in High (NO) or LOW (NC) state.
SYSTEM SET UP & CONFIGURATION
The system can be configured with the help of RS232 communication port provided on the front side of the Control Module.
Canopus Instruments provides a PC based software tool for configuration of the system. This allows the user to set following parameters.
- Individual Input alarm active state (High/Low)
- Command Pushbutton Input active state (High/Low)
- Set valid Input reorganization delay (No of scan cycles.)
- Select Communication Protocol MODBUS-RTU/ MODBUS-TCP.
- Set System Address for Communication.
- Set Communication parameters.
- Select operating Sequence.
- Select Input Groups (Applicable for specific sequences only.)
- Select Alarm Window indication flash rate.
MONITORING & CONTROL:
A. PUSHBUTTON INPUTS:
Standard requirement of alarm annunciation system is three push buttons.
- LAMP TEST
Additional three push buttons are provided in CAN-AS system.
- SEQUENCE TEST
- FIRST UP RESET
These pushbuttons are provided to fulfill the requirement of all the operating sequences offered in the system.
B. ALARM DISPLAY:
Red LED windows provided to display Alarm state of all input channels. Depending on the status of Alarm the indication is,
- Fast Flashing (FF)
- Slow Flashing (SF)
- Steady (ON)
C. RELAY OUTPUTS:
4 nos. of Potential free relay contacts (NO+NC) are provided for connecting system fault output signals to external control systems. These can also be used for driving external 230VAC operated Hooters or LAMP indications.
Remote monitoring and control operation is possible using a suitable SCADA package such as ELLIPSE, LABVIEW, etc.
The communication set up is established using options provided such as MODBUS-RTU, MODBUS-TCP, and PROFIBUS. (Refer to data format and set up details in the manual.)
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|Display||Annunciation Windows||30 nos.|
|Window Size||W 60mm X H 25mm|
|Illumination Colour||RED colour using LED’s.|
|Flash rate||Fast Flash (FF) — 60 flashes per minute.
Slow Flash (SF) — 30 flashes per minute.
|Connectors||Input + Power Supply||37 Pin D-Sub connector (Female)|
|Mechanical Details||Size||W 410 mm X H 268 mm X D 70 mm (Depth 100mm including rear side D-connector with cover for cable connection.)|
|Enclosure material||Mild steel powder coated enclosure.|
|Mounting||Panel mounted. (Panel Cutout : 398mmX 256mm)|
- Programmable Sequence Selection. Option of selecting from 9 different Alarm Sequences.
- Fully configurable system using PC based S/W utility.
- Annunciation window grouping option provided for configuration as per user requirement.
- LOCAL operator interface using Push buttons.
- REMOTE operator interface capability enables SCADA operation.
- Communication options using MODBUS-RTU/ MODBUS-TCP protocols. (PROFIBUS slave option offered.)
- Synchronization facility for multiple AS systems in the same control room.
- Designed to suit convenience of Control Panel mounting and maintenance.
- CAN-AS available in 8-12-16-24-30 window models.
|Power Supply||24VDC(±10% tolerance)|
|Supply Current||1.5 Amp Max.|
|Protection||Fuse protection 2A .Slow blow.|
|Field Input Signals||Inputs||30no.s Potential Free input contacts.|
|Input Excitation||24VDC provided from the system.|
|Isolation||All inputs are isolated from the system.
No isolation between individual input channels.
|Local Input Signals||Pushbutton Inputs||6 nos. of Pushbutton inputs.
LAMP TEST, ACKNOWLEDGE, RESET,
SILENCE, SEQUENCE TEST, FIRST UP RESET.
|Outputs For Display Windows||Outputs||30nos. 24VDC Open collector outputs for driving LED display windows.|
|Output Current||100mA (Max) sinking /channel|
|Relay Outputs||Relay Outputs||Standard — 2 nos. (NO+NC)
Optional — 2 nos. (NO+NC)
|Relay Contact Rating||2 Amp. At 230VAC/28VDC|
|Auxiliary Input & Output Signals||Synchronization||Sync. Input –1 nos. of 24VDC
Sync. Output — 2 nos. of 24VDC, 50mA
|Communication Ports||RS485 Port||For MODBUS-RTU communication.
Baud rates : 4800, 9600, 19200 BAUD
Isolation : 500V
|RS232 Port||For System configuration.
Baud Rate – 9600 (fixed)
Isolation – Nil
|System Indications||24V DC POWER ON||LED indication GREEN|
|5 V DC SUPPLY ON||LED indication GREEN|
|CARD HEALTH||DUAL COLOURLED indication
OK –GREEN, FAULT – RED
|CARD HEALTH RELAY ON||LED indication CARD FAULT — RED|
|OUTPUT RELAY1 to 4 ON||LED indication RED|
|Connections||Field Inputs & Push button Inputs,||37 Pin D-Sub connector (Female)|
|Sync Input & Outputs||12 way (6+6)
Pluggable Screw connector suitable for 1.5mm 2 wires
|Display Outputs||37 Pin D-Sub connector (Male)|
|Relay Outputs||16 way (8+8)
Pluggable Screw connector suitable for 1.5mm 2 wires
|Power Supply connection||3Way Pluggable Screw connector suitable for 1.5mm 2 wires.|
|Mechanical Details||Size||W 100mm X H 270 mm X D 250 mm|
|Enclosure material||Aluminum anodized/powder coated enclosure.|
|Mounting||Bracket mounted. (Option of Base or Front side mounting.)|
|(Note: The RS232 port is also used along with external communication device for ETHERNET interface using MODBUS-TCP protocol.)|