Crowcon Hydra256 User manual

Hydra256
Addressable Gas Detection System
Installation and Operation Manual
Issue 2
January 2015

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Issue 2, January 2015

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Issue 2, January 2015
INTRODUCTION
The Crowcon Hydra256 Addressable Gas Detection System is designed to monitor toxic
and/or flammable gas hazards. The system must be installed and operated in accordance
with these instructions. No components of this system are certified for use in a hazardous
area.
WARNING
The equipment described in this instruction manual has mains
voltages applied to it. Ensure correct safety procedures are adopted
before working on the equipment.
The equipment described in this manual is designed for detection of
flammable and/or toxic gases. Ensure local safety procedures are
adopted before carrying out any maintenance or calibration work.
The equipment described in this manual may be connected to remote
alarms and/or shutdown systems. Ensure that local operating
procedures are adopted before carrying out any maintenance or
calibration work.
© Crowcon Detection Instruments Ltd 2015
UK Office
Crowcon Detection
Instruments Ltd
172 Brook Drive,
Milton Park,
Abingdon
Oxfordshire OX14 4SD
Tel: [phone]
Fax :[phone]
Email: s[email protected]
Website: www.crowcon.com
USA Office
Crowcon Detection
Instruments Ltd
1455 Jamike Ave, Suite 100
Erlanger
Kentucky 41018
Tel: [phone] or
1 800 527 6926
Fax: [phone]
Email: [e-mail]
Website: www.crowcon.com
Netherlands
Office
Crowcon Detection
Instruments Ltd
Vlambloem 129
3068JG
Rotterdam
Netherlands
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.crowcon.com
Singapore Office
Crowcon Detection
Instruments Ltd
Block 194 Pandan Loop
~06-20 Pantech Industrial
Complex
Singapore 128383
Tel: [phone]
Fax: [phone]
Email: s[email protected]
Website: www.crowcon.com
China Office
Crowcon Detection Instruments
Ltd (Beijing)
Unit 316, Area 1, Tower B,
Chuangxin Building
12 Hongda North Road, Beijing
Economic Technological
Development Area
Beijing, China 100176
Tel: [phone]
Fax: [phone]
Email: s[email protected]
Website: www.crowcon.com
Crowcon reserves the right to change the design or specification of this product without notice.

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TABLE OF CONTENTS
1) INTRODUCTION..............................................................................................................................5
1.1) UNIT FEATURES ...........................................................................................................................5
1.2) PANEL CONFIGURATION................................................................................................................5
1.3) TECHNICAL SPECIFICATIONS .........................................................................................................6
2) INSTALLATION...............................................................................................................................6
2.1) UNIT...........................................................................................................................................6
2.1.1) DIAGRAM AND PART IDENTIFICATION........................................................................................7
2.1.2) BACK PANEL AND CONNECTIONS.............................................................................................8
2.1.3) POWER CONNECTIONS ..........................................................................................................9
2.1.4) OPTO-ISOLATED AUXILIARY INPUT CONNECTIONS......................................................................9
2.1.5) DIP-SWITCH SETTING FOR BUS COMMUNICATION PROTOCOL AND SPEED ..................................10
2.2) FIELD DEVICE CONNECTIONS.......................................................................................................11
2.2.1) GAS DETECTOR POSITIONING ...............................................................................................12
2.2.2) DETECTOR CONNECTIONS....................................................................................................12
2.3) ADDRESSABLE OUTPUT MODULES................................................................................................14
2.3.1) RELAY MODULE..................................................................................................................15
2.3.2) MODULE ADDRESSING .........................................................................................................15
2.3.3) DETECTOR IDENTIFICATION ..................................................................................................17
2.4) PROGRAMMING BY PC ...............................................................................................................17
3) SYSTEM POWER UP AND OPERATION ......................................................................................18
3.1) POWER ON...............................................................................................................................18
3.2) SYSTEM STATES AND OPERATION ................................................................................................19
3.2.1) SYSTEM STATES .................................................................................................................19
3.3) USER LEVELS ............................................................................................................................22
3.3.1) OPERATOR LEVEL............................................................................................................23
3.3.2) MAINTENANCELEVEL......................................................................................................24
3.3.3) ENGINEERLEVEL .............................................................................................................24
3.4) MENUDETAILS......................................................................................................................24
3.5) 1- MENU..................................................................................................................................24
3.5.1) ACTIVE EVENTS..............................................................................................................25
3.5.2) EVENT LOG.....................................................................................................................27
3.5.3) PRINT ..............................................................................................................................29
3.5.4) ABORT PRINT..................................................................................................................29
3.5.5) SET PRINTERMODE (USERS LEVEL “M” AND “E”)..............................................................29
3.5.6) SYSTEM INFO .................................................................................................................30
3.6) 2-LOGOUT..............................................................................................................................30
3.7) 4-LOGIN..................................................................................................................................31
3.8) 3-SYSTEM..............................................................................................................................32
3.8.1) ZONES...............................................................................................................................32
3.8.2) MODULES ..........................................................................................................................33
3.8.3) RELAYS .............................................................................................................................33
3.8.4) DETECTORS (CHANNELS) ....................................................................................................35
4) PC CONFIGURATION SOFTWARE...............................................................................................37
4.1) INTRODUCTION..........................................................................................................................37
4.1.1) MINIMUNPC HARDWARE REQUIREMENTS..................................................................37
4.2) INSTALLATION............................................................................................................................38
4.3) LAUNCHING THE PROGRAM .........................................................................................................38
4.3.1) PROGRAM HOMEPAGE .........................................................................................................39
4.4) PROGRAM MENU........................................................................................................................40
4.4.1) FILE ..................................................................................................................................40
4.4.2) SETTINGS ..........................................................................................................................44
4.4.3) USERS...............................................................................................................................44
4.4.4) COMMUNICATION ................................................................................................................47
4.4.5) REPORTS...........................................................................................................................51

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4.4.6) INFO..................................................................................................................................51
4.5) MODIFICATION OR CREATION OF A NEW CONFIGURATION FILE..........................................................52
4.5.1) SYSTEM INFORMATION.........................................................................................................52
4.5.2) GENERAL SETTINGS............................................................................................................53
4.5.3) ZONES...............................................................................................................................54
4.5.4) MODULES OVERVIEW ..........................................................................................................54
4.5.5) INPUT MODULES .................................................................................................................57
4.5.6) OUTPUT MODULES..............................................................................................................67
5) WARRANTY ..................................................................................................................................77

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1) INTRODUCTION
This manual details the procedures required to install, program, operate, test and
maintain the Hydra256 gas detection system.
1.1) Unit features
The Hydra256 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 HYDRA256 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

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1.3) Technical Specifications
Housing:
R
ack 19" 3U(HE) or metallic box dim.
430 x 405 x 140
mm.
Inputs:
Max. 256 detectors (either addressed on RS485 bus lines or via remote 8-input
modules)
Outputs:
8 output relays on board the panel
256 Open Collector outputs via STG/OUT16-S or STG/OUT16-N modules (relay
board STG/8REL optional for STG/OUT16-S modules)
Relay
contact
rating
16A at 250 Vac
Serial ports:
2 expandable to 4 RS485
1 RS232 (PC connection)
Power
supply
:
24 V
dc version rack 19”;
230 Vac version box
Consumption
:
Max 10 VA
Display:
Graphic Liquid crystal display (LCD)
Optical indications:
9 LED double raw
Operating temperature:
0-55°C
Storage temperature
-20 ÷ +60° C
Operating RH:
15-85%
2) INSTALLATION
2.1) Unit
The following instructions are for the Hydra256 wall-mount version.
Mount the panel using the four fastening holes on the back of the steel enclosure.
Fig. 2.1 a) Hydra256
Connect the three-core mains cable to the power supply board (minimum 1.5mm2for
each core) and secure using the wire clamps.
Power the system and then connect the power supply wires with red and black
crimps to the 2 x 12V 7Ah back up batteries, housing them in the panel near the
power supply ensuring they are firmly secured.

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Fig. 2.1 b) Power supply and batteries
2.1.1) Diagram and part identification
Box version
1- Power supply (27 Vdc 5A)
2- 2 12V 7Ah batteries (not included)
3- RS232 serial port (PC connection)
4- Parallel port (printer connection)
5- Back panel
6- Digital input connections
7- RS485 bus connections
8- Relay output connections
9- Main board
10- Microprocessor
11- SD card
12- Power supply and battery control circuit
Fig. 2.1.1 Unit diagram and part identification
CONTROL PANEL
INTERNAL VIEW
1

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2.1.2) Back panel and connections
Legend
JP33 Relay 1 per Fault / Relay 1 Fault
JP35 Relay 2 AC Fail
JP37 Relay 3 Low Battery
JP39 Relay 4 Buzzer Repeater
JP34 Relay 5 Alarm level 1
JP36 Relay 6 Alarm level 2
JP38 Relay 7 Alarm level 3
JP40 Relay 8 Test
JP7 Bus RS485 connection 1
JP11 Bus RS485 connection 2
JP15 Bus RS485 connection 3
JP19 Bus RS485 connection 4
JP41 Digital Inputs
JP42 Digital Inputs
P1 Printer parallel port
P2 RS232 PC serial port
JP48 Power supply connection (24 Vdc)
F1 Fuse first power supply (3,15A F)
JP51 Power supply auxiliary connection
(24 Vdc)
F2 Fuse for aux. power supply (3,15A F)
Earth Earth connection
DL 1-8 LED indicating relay activation
D30-33 Flashing LED indicating the RS485
bus communication
D19 LED indicating the power supply at
JP48
D24 LED indicating the power supply at
JP51
Jp33 Jp35
Jp34
Jp36
Jp37 Jp38
Jp39 Jp40
Jp7
Jp11 Jp19
Jp15
Jp41
Jp42
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
NO
C
NC
A B
A B
A B
A B
D30 D32 D30
D31 D33
Dl1
Dl2 Dl4
Dl5
Dl6
Dl7
Dl8
P1 P2
D32 D19D
D
2
4
D
Back panel
Earth
Jp48
Jp51
F1
F2

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2.1.3) Power connections
Fig. 2.1.3 Power connections
2.1.4) Opto-isolated auxiliary input connections
4 opto-isolated digital inputs are available on the back panel to be used as indicated
in the diagram below.
Fig. 2.1.4 Auxiliary input connections
P1 P2
D19D
D24D
Control unit back panel
Earth
Jp48
Jp51
F1
F2
27,6 Vdc/ 4A power supply
+
-
100-120 Vac
200-240 Vac
Earth
+ -
-
+
2
7
,
4
V
d
c
Al connettore Jp51 è possibile
collegare un secondo alimentatore
per una maggior affidabilità del sistema
To the Jp51 connector it is possible
the connection ofan auxiliary
Power Supply, for a more system
reliability
3,15A
3,15A
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Jp41
Jp42
D1D2
D3D4
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- +
- +
Contatto esterno opzionale di tacitazione
External remote switch for the ACK function
(optional)
Non usato /not used
Ingresso diguasto batteria
Battery low/failure input
Control unit back panel
P1
P2
Earth
Jp48
Jp51
F1
F2
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Main power failure input
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2.1.5) DIP-Switch setting for bus communication protocol and speed
The series of D2 dip-switches must be set for unit compatibility with various gas
detector versions and IN and OUT modules.
Fig. 2.1.5 RS485 bus communications dip-switch
Dip-switch 1: Baud Rate Bus RS485
Positi
on
Bus communications speed
Detector and Module compatibility
ON 115.200 SMART “S” gas detectors; STG/IN8-S and STG/OUT16-S
modules
OFF 9.600 SMART3G gas detectors; STG/IN8-S and STG/OUT16-S
modules; STG/IN8-N and STG/OUT16-N modules.
Dip-switches 2 and 3: RS485 bus communications protocol
Sw 2
Sw 3
Protocol
Detector and Module compatibility
Notes
ON ON Galileo SMART “S” gas detectors; STG/IN8-S
and STG/OUT16-S modules
Baud Rate 115.200
OFF ON IDI OldSMART IDI,SMART3CCand CD
detectors. OldSTG/IN8 andSTG/OUT16
modules. STG/IN8-NandSTG/OUT-16
modules
Baud rate 9600
ON OFF Modbus SMART3G gas detectors; STG/IN8-S
and STG/OUT16-S modules Baud rate 9600 (if SMART “S” detectors
are not connected to the
bus, 115.200 Bps can be
set (switch 1))
OFF OFF Setting not used
D2=switches
Vista posteriore scheda centrale
/ Main board back view

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Dip-switches from 4 to 7: not used
Dip-switch 8: restore default settings
Position
Function
ON
When turned on, restores unit default settings
OFF
Normal position
2.2) Field device connections
The unit comes complete with two RS485 bus lines (upgradeable up to 4) to which
gas detectors are connected. Serial buses are all open types.
On the same bus lines, it is possible to connect also addressable output modules.
The length of each serial bus line should not exceed 1,000 metres.
4 conductors are required for device connection (meaning both detectors and IN and
OUT modules): 2 for the RS485 serial bus and 2 for device power. For this reason
we suggest you use two different wires or a single wire with suitable features as
described below.
The RS485 serial bus must be connected with an EIA RS 485 connection wire: No. 2
conductors with 0.22/0.35 mm2section + shield (TWISTED PAIR). Nominal capacity
between conductors < 50 pF/m, nominal impedance 120 ohm. Total line length with
this type of connection must not exceed 1000 metres. An example of a
recommended wire is a BELDEN 9841 or similar wire (EIA RS485 data transmission
wire). Only connect detectors (and IN and OUT modules) in cascade. Avoid tree or
delta connection since they reduce interference immunity.
Detector power supply (and IN and OUT modules on the bus) must be connected
with a 2-core wire with adequate section based on the number of connected devices,
their distance from the power supply and each device’s consumption (please see the
technical manual enclosed with gas detectors for this purpose).
Hydra256 can support a maximum of 256 gas detectors. Gas detectors can be divided
on the bus lines provided that the maximum number of 64 detectors is not exceeded
on each bus line.
Each device connected to the RS485 buses must have a univocal address. See the
table on page 20 for output module address setting. For gas detectors, see the
technical manuals for address setting.
The table below lists the possible addresses for the various modules and detectors
connected to RS485 buses.
Module type
Available addresses
Notes
Bus
1
Bus
2
Bus 3
(optional)
Bus 4
(optional)
STG
/OUT16
-
N
1-3 1-3 1-3 1-3 Up to a maximum of 3 modules in the
system.
STG
/OUT16
-
S
1-
255 1- 255 1-255 1-255 Up to a maximum of 8 modules per line and up to 16 maximum in the system.
Hydra+
Detectors 1-
128 1- 128 1-128 1-128 Up to a maximum of 64 detectors per line and up to 247 maximum in the system.

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Two serial bus modules are fitted as standard. A further two may be added to the
spare slots located on the reverse side of the main board (item 9 on Figure 2.1.1).
Serial bus module locations are shown on the image below.
Rear side view of main board
2.2.1) Gas detector positioning
Detectors must be placed near any potential gas leaks or where potential stagnation may
occur following gas leaks from different points.
To detect explosive gas with specific weight heavier than air's, detectors must be placed
about 30 cm from the floor. Vice versa, to detect gas with specific weight lighter than air's,
detectors must be placed about 30 cm from the ceiling.
To detect toxic gas or oxygen, we suggest you place detectors about 150 cm from the floor
in areas were individuals to be protected frequently sojourn.
For correct positioning, also keep in mind that any dispersed gas clouds move according to
air currents (doors, windows, air conditioning, etc.).
The detector must be protected against direct contact and immersion in water.
Furthermore, it is best to install detectors in easily accessible positions for periodic
maintenance purposes.
In any case, please refer to gas detector manuals for correct positioning.
2.2.2) Detector connections
Detectors with RS485 output
Detectors with RS485 digital outputs are directly connected to the RS485 bus.
4 wires are required in this type of connection: 2 for the RS485 serial bus and 2 for
device power supply. For this reason we suggest you use two different wires or a
single wire with suitable features as described below.
The RS485 serial bus must be connected with an EIA RS 485 connection wire: No. 2
wires with 0.22/0.35 mm2section with shield (TWISTED PAIR). Nominal capacity
between conductors < 50 pF/m, nominal impedance 120 ohm. Total line length with
this type of connection must not exceed 1,000 metres. An example of a
recommended wire is a BELDEN 9841 or similar wire (EIA RS485 data transmission
wire). Only connect detectors (and IN and OUT modules) in cascade. Avoid tree or
delta connection since they reduce interference immunity.
Serial bus
modules 1
and 2
Serial bus
module 3 and 4
spare positions

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The power supply to the detectors (and IN and OUT modules on the bus) must be
connected with a 2-core wire with adequate section based on the number of
connected devices, their distance from the power supply and each device’s
consumption (please see the technical manual enclosed with gas detectors for this
purpose).
Note: each detector connected on the RS485 line must have its own unique address
between 1 and 247. Please see the gas detector technical manual for address settings.
Fig. 2.2.2 b Device connections on RS485 bus
AB+ A
AB+ A
AB+ AA B+ A
A B +AA B +A
AB+ AA B+ A
IN/8 or OUT/16 module
(*) se disponibili / if available
Come Bus 1 As Bus 1
Come Bus 1 As Bus 1
Come Bus 1 As Bus 1
+ -
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Shield
Cavo twistato / schermato 2x022 (Belden 9841 o equivalente) Twisted / shielded 2x0,2 cable (Belden 9841 or equivalent)
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Jp7
Jp11
Jp19
Jp15
A B
A B
A B
A B
Back panel
Loop1 Loop2
Loop3 Loop4
Loop (Bus) 2
Loop (Bus) 3
Loop (Bus) 4
Earth

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2.3) Addressable output modules
STG/OUT16-S remote modules are field mounted and connected to the panel via RS485
buses. They provide 16 Open Collector outputs (negative switch) with programmable
functions to remotely trigger Sirens, Solenoid valves, Relays, etc. Each STG/OUT16-S
module can be connected to up to 2 boards and 8 relays that convert the Open Collector
output to a powerless exchange contact.
Each module must be addressed using the rotary switches placed on the PCB. The address
must be univocal and between 1 and 255. Up to 8 x STG/OUT16-S modules can be
connected to each RS485 bus and a maximum number of 16 modules on the system.
Fig. 2.6 STG/OUT16-S module
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Jp13 Communication Baud Rate setting: Closed 115.000 bps (Multiscan++ control panel Open 9.600 bps (old Galileo Multiscan control panel)
Jp13 Settaggiovelocità comunicazione: Chiuso 115.000 bps (Centrale Multiscan ++) Aperto 9.600 bps (vecchia centrale Galileo Multiscan)
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Morsettiera uscite O/Ci (O/C output connections)
Outputs 9-16 Outputs 1-8
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Collegamento scheda relè (opzionale) / Relay board connection (optional)

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2.3.1) Relay Module
The 8-relay expansion board converts the open-collector outputs from the addressable
output module into voltage free changeover contact. Up to two relay boards can be
connected to each output module. A relay board is directly connected to the output module
(J1 connector) and a second relay board is connected to the first.
Fig. 2.4.1 Relay board connection to the output module
2.3.2) Module addressing
Modules are addressed using the two rotary switches in RSW 1 and 2 hexadecimals
(fig. 2.5). Rotary switches permit hexadecimal settings (base 16). Each switch as 16
positions (0-F) and the pointer is positioned on the number chosen using a
screwdriver to create a decimal value between 1 and 255 (see table 1). The
maximum number of modules that can be connected to the unit is 16.
Each module must have unique address in the system. Dual addresses are not
permitted even if modules are on different serial buses.
Esempio collegamento
/ Connection example
Out 1
Out 2
Out 3
Out 4
Out 1
Out 9
Out 10
Out 11
Out 12
Out 8
Out 7
Out 6
Out 5
Out 16
Out 13
Out 15
Out 14
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Open Collector outputs
NC C NO
NO C NC NO C NC
NC C NO
ST.G/OUT16 Module

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Issue 2, January 2015
Example
:
If the address switches are set in this manner, RSW2 at 0 and RSW1 at D, the corresponding address
in decimal number would be 13 (see table 1).
Table 1: Conversion from decimal to hexadecimal numbers
DEC HEX DEC HEX DEC HEX DEC HEX DEC HEX DEC HEX DEC HEX
1 01 38 26 75 4B 112 70 149 95 186 BA 223 DF
2 02 39 27 76 4C 113 71 150 96 187 BB 224 E0
3 03 40 28 77 4D 114 72 151 97 188 BC 225 E1
4 04 41 29 78 4E 115 73 152 98 189 BD 226 E2
5 05 42 2A 79 4F 116 74 153 99 190 BE 227 E3
6 06 43 2B 80 50 117 75 154 9A 191 BF 228 E4
7 07 44 2C 81 51 118 76 155 9B 192 C0 229 E5
8 08 45 2D 82 52 119 77 156 9C 193 C1 230 E6
9 09 46 2E 83 53 120 78 157 9D 194 C2 231 E7
10 0A 47 2F 84 54 121 79 158 9E 195 C3 232 E8
11 0B 48 30 85 55 122 7A 159 9F 196 C4 233 E9
12 0C 49 31 86 56 123 7B 160 A0 197 C5 234 EA
13 0D 50 32 87 57 124 7C 161 A1 198 C6 235 EB
14 0E 51 33 88 58 125 7D 162 A2 199 C7 236 EC
15 0F 52 34 89 59 126 7E 163 A3 200 C8 237 ED
16 10 53 35 90 5A 127 7F 164 A4 201 C9 238 EE
17 11 54 36 91 5B 128 80 165 A5 202 CA 239 EF
18 12 55 37 92 5C 129 81 166 A6 203 CB 240 F0
19 13 56 38 93 5D 130 82 167 A7 204 CC 241 F1
20 14 57 39 94 5E 131 83 168 A8 205 CD 242 F2
21 15 58 3A 95 5F 132 84 169 A9 206 CE 243 F3
22 16 59 3B 96 60 133 85 170 AA 207 CF 244 F4
23 17 60 3C 97 61 134 86 171 AB 208 D0 245 F5
24 18 61 3D 98 62 135 87 172 AC 209 D1 246 F6
25 19 62 3E 99 63 136 88 173 AD 210 D2 247 F7
26 1A 63 3F 100 64 137 89 174 AE 211 D3 248 (*) F8
27 1B 64 40 101 65 138 8A 175 AF 212 D4 249 (*) F9
28 1C 65 41 102 66 139 8B 176 B0 213 D5 250 (*) FA
29 1D 66 42 103 67 140 8C 177 B1 214 D6 251 (*) FB
30 1E 67 43 104 68 141 8D 178 B2 215 D7 252 (*) FC
31 1F 68 44 105 69 142 8E 179 B3 216 D8 253 (*) FD
32 20 69 45 106 6A 143 8F 180 B4 217 D9 254 (*) FE
33 21 70 46 107 6B 144 90 181 B5 218 DA 255
(**) FF
34 22 71 47 108 6C 145 91 182 B6 219 DB
35 23 72 48 109 6D 146 92 183 B7 220 DC
36 24 73 49 110 6E 147 93 184 B8 221 DD
37 25 74 4A 111 6F 148 94 185 B9 222 DE
(*)
addresses
not available
for the Modbus protocol
(**)address not available for the Hydra protocol

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Issue 2, January 2015
2.3.3) Detector identification
Every detector connected to the control panel is identified by a code which allows its
configuration and contains all the principle data required to physically identify it.
For example:
Fig. 2.6.3) Detector number indication
2.4) Programming by PC
The Hydra256 control panel is fully programmable by a personal computer with a
dedicated configuration software (to be ordered separately). The software has been
designed to make the control panel programming simpler and faster.
The control panel can be connected to a Personal Computer using the RS232C
serial port available on the back panel.
The correct serial connecting cable is necessary to connect the control panel to the
computer. (The connector pin layout is shown below)
Fig. 2.7) PC Connection cable
CHN 02001
Indirizzo modulo IN/8 o rilevatore gas
(Module IN/8 or detector address)
da 0 a 255 (from 0 to 255)
Posizione rilevatore da 01 a 08 se modulo
IN/8 oppure 00 serilevatore collegato su bus
(detector position from 01 to 08 if IN/8
module or 00 is detector on the bus
1
Numero bus (1-4)
(bus number (1-4))

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3) SYSTEM POWER UP AND OPERATION
The chapter explains the procedures for the operation, the commissioning and the
maintenance of the control unit Hydra256.
For the programming of the Hydra256 control panel the PC software is required.
3.1) Power ON
After ensuring correct installation of the Hydra256, the unit can be switched on.
When first switched on, after the “Warm Up” time (3 minutes by default), the display
will show an empty picture without any indication because, at the first switch ON, the
control panel needs programming.
Fig. 3.1 a) Warm Up screen.
The control panel programming must be performed just by the Personal Computer
with the dedicate configuration software (see the previous paragraph for the
connection of the control panel to the PC). Refer to the next chapter No. 4 for the
configuration software instructions.
For an already configured control panel, the normal screen will show eight channels
(detectors) with their status:
Fig. 3.1 b) Typical NORMAL state screen.

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3.2) System states and operation
The LCD display provides the user with details about the various system states.
A few general rules apply at any level as follows:
- Should there be a list displayed, the page scrolling can be done using the
UP/DOWN arrow keys. Once a selection is made by pressing the ENTER key
the display will show a more detailed view of that particular selection.
- All the arrow keys, UP/DOWN, LEFT/RIGHT are being used also to move
through the parameter under change fields.
- At any display level, the ESC key will switch back to the previous view.
Pressing twice the ESC key, you will go back to the main screen.
- The same, at any display level, should no keys be pressed for more that 3
minutes, the view will automatically switch back to the main window of the
Normal mode.
3.2.1) System states
The system is designed to be in one of the following operative states:
NORMAL
ALARM
FAULT
TEST/MAINTENANCE
UNSET
EMERGENCY
NORMAL
This is the system state when everything works properly and there is no Alarm and
no Fault notification. Under this condition it is possible to visualise the current status
of the inputs.
On the LCD display, in the main frame, up to 8 channels information is shown, with
the actual gas concentration measured, as configured in the related channel.
Fig. 3.2.1 a) Typical NORMAL state screen.