Addressable Gas Detection System Manual
Addressable System Manual
5
Issue 2, January 2015
1) INTRODUCTION
This manual details the procedures required to install, program, operate, test and
maintain the
Hydra
256
gas detection system.
1.1)
Unit features
The
Hydra
256
is a gas detection control unit designed to meet the widest range of flexibility
required by the market.
The control panel is based on a powerful microprocessor which provides a wide range of
self-diagnostic procedures to detect and locate possible faults.
Extremely flexible and reliable, it can manage up to 256 addressable gas detectors
simultaneously.
System architecture can include up to 256 fully programmable Open Collector outputs, which
can be connected to Relay Modules to provide volt-free contact outputs.
The control system is supplied as standard with two serial input modules, capable of
controlling up to 64 detectors on each. A further two input modules can be added to extend
system capability to 256 detector maximum.
Other
HYDRA
256
panel features:
Event log can be displayed on the screen or downloaded to a PC.
RS232 serial port for PC connection for programming and control via specific software.
Parallel port for printer connection.
The control panel is supplied in a wall-mounted steel cabinet which also contains the system
power supply and (optional) back-up batteries.
1.2)
Panel configuration
Fig. 1.2 System block diagram
1 or 2 eight-way relay
modules per addressable
output module
Optional
1 to 4 addressable output
modules (open-collector) per bus
Up to 64 Hydra
+
gas
detectors per bus.
8 x SPCO relay
outputs are fitted
within the control
panel.
Bus 1
Bus 2
Bus 3
Bus 4
