Gas Detection GD 2400 User manual

PROPRIETARY RIGHTS
No part of the hardware or documentation may be reproduced, transmitted, transcribed, stored in a
retrieval system, or translated into any language or computer language, in any form or by any
means, without prior written permission of GDA.
While great efforts have been made to ensure the accuracy and clarity of this document, GDA
assumes no liability resulting from any omissions in this document, or from misuse of the
information contained herein. The information in this document has been carefully checked and is
believed to be entirely reliable with all of the necessary information included. GDA reserves the right
to make changes to any products described herein to improve reliability, function, or design, and
reserves the right to revise this document and make changes from time to time in content hereof
with no obligation to notify any persons of revisions or changes. GDA does not assume any liability
arising out of the application or any use of any product or circuit described herein; neither does it
convey license under its patent rights or the rights of others.
WARNINGS, CAUTIONS AND NOTES
Warnings identify an operating or maintenance procedure, practice, condition, or
statement that, if not strictly followed, could result in death or injury to personnel.
Cautions, which appear elsewhere in this manual, identify an operating or
maintenance procedure, practice, condition, or statement that if not strictly
followed could result in equipment damage or serious impairment of system
operation.
Notes highlight certain operating or maintenance conditions or statements that are
essential but not of known hazardous nature as indicated by Warnings and
Cautions.
Warnings, Cautions and Notes are included throughout this manual, as required.
Additionally, this section contains important Warnings that may not be contained
elsewhere within this instruction manual.
FOR SAFETY REASONS, THE GD2400 MUST BE INSTALLED, OPERATED AND
SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND THIS
INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING THE GD4020
THE OPERATION DESCRIBED IN THIS DOCUMENT IS THE INTENDED USE OF THE
GD4020. GDA CANNOT BE HELD RESPONSIBLE IF THE GD4020 IS USED FOR ANY
OTHER PURPOSE OTHER THAN THAT STATED. ANY OTHER USE OF THE GD4020
WILL RENDER ANY CERTIFICATES ISSUED INAPPLICABLE.

Gas Detection (Australia) Pty Ltd Page 3 of 24 M-GDA-2400-16/01/2017 Rev 8
System Specification
Power requirements
Inside Components: 24V DC,
<25mv ripple 0.5A.
Power Supply: 240VAC +- 10%
This can be supplied by plug in mains power
supply or via plug jack on side of unit
No of sensors
1-8
4-20ma source 2 wire or three wire
Display
4 x16 char line back lit LCD
Alarm relays
3 Per Sensor Input Channel
Alarm levels are programmable levels and can
be rising or falling latched or non latched with
delays for coming on and holding them on
Alarm relay specification
2A non inductive 240V AC
Alarm delay
0-300 seconds
The time the gas level has to be above the
alarm level before the alarm relay activates
Relay time on
0-20 Minutes
The time the relay is kept on after an alarm. If 0
is set the alarm resets when the gas level falls
below the alarm threshold
Alarm hysteresis
0-50% of range of sensor
The figure is expressed in units of the gas being
measured
Fault relay
Energised when controller is
powered
The fault relay switches when: Power to the
controller is lost,
A sensor is faulty or disconnected, The watch
dog is tripped
Analogue outputs
3
0-10v ; 4-20mA ; 0-20mA
Types of outputs
Sensor In = output
This is configured to o/p (output) 1 for sensor 1
and o/p 2 for senor 2
Max of sensor 1 & sensor 2 (same
range for sensor 1 & 2)
This is the highest reading from either sensor
available as an o/p
Min of sensor 1 & sensor 2 (same
range for sensor 1 & 2)
This is the lowest reading from either sensor
available as an o/p
Average of sensor 1 and sensor 2
(same range for sensor 1 & 2)
This is the average value of the two inputs
Scaled o/p of sensor 1
This is an o/p that is scaled between two fixed
points of the sensor 1 i/p range
Scaled o/p of sensor 2
This is an o/p that is scaled between two fixed
points of the sensor 2 i/p range
Scaled o/p of Max of sensor 1 &
sensor 2 (same range for sensor 1
& 2)
This is an o/p that is scaled between two fixed
points of the maximum of sensors 1 & 2's i/p
range (chan 1 & 2 range are same)
Scaled o/p of Min of sensor 1 &
sensor 2 (same range for sensor 1
& 2)
This is an o/p that is scaled between two fixed
points of the minimum of sensors 1 & 2's i/p
range (chan 1 & 2 range are same)
Output Update Period
0-10mins
This the frequency that the 4-20mA or 0-20mA
o/p is updated . if 0 is set the o/p follows the
i/p . If a time is set o/p is updated with the last
level prior to the update period timing out.
That o/p is then o/p for the next timing period.
Mimic serial Interface
RS485 serial interface to M2001
mimic panel
This transmits via two wire interface the level
and alarm status of each channel. The M2001
contains relays to drive local equipment
Internal buzzer
93db 0.5M
User interface
4 push button keys

Gas Detection (Australia) Pty Ltd Page 4 of 24 M-GDA-2400-16/01/2017 Rev 8
Overview of Operation:
The 2400 operates from a 240VAC±10% 1.5A Power Supply mounted inside the
2400 .
The 2400 can monitor up to 8x 4-20ma loop powered or 3 wire gas sensors .
The field wiring for the sensors are wired to the AM001 board in the 2400 unit.
The sensors must be wired in a cable that has a continuous screen and the screen
must be earthed inside the 2400 as per the diagram.
The input board (AM001) selects the highest (or lowest 'JP18 L\H') reading from
the sensors and passes it to the main board which houses the front panel display
and the alarm relays.
The 2400 can be field programmed to provide volt free contacts at various alarm
levels and also various types of analogue outputs (4-20mA ; 0-20mA; 0-5V; 0-10V).
The voltage o/ps need an external resistor which will be provided if this option is
required. This resistor MUST be fitted at the equipment end of the line NOT at the
o/p on the 4020.
NORMAL OPERATION
In normal operation the display will alternate between two screens
The pushbuttons on the front panel have no effect in NORMAL OPERATION
Screen 1 will display the highest car park gas level
Screen 2 will display
ALARM CONDITION
Screen 1 will show
When the gas level is above the alarm threshold the system will remain in alarm.
The sensor may not go into alarm as soon as it reaches the alarm threshold as
there is a delay set into the system via the set up menu.
The alarm relays may stay on for a period of time after the gas level has dropped
below the threshold level by the hysteresis amount (set into the system via the set
up menu) .
The alarm relays may remain on for a period of time after the gas level goes below
the alarm threshold. This over run time is set into the system via the set up menu

Gas Detection (Australia) Pty Ltd Page 5 of 24 M-GDA-2400-16/01/2017 Rev 8
SENSOR FAULT CONDITION
Screen 2 will show
When the Fault message is displayed on the screen it means that there is a sensor related
problem with the system
If one of the sensors connected to the AM001 board has an output which falls
below the prescribed level (Normally 3mA) it will cause this error message to
appear.
If one of the sensors is disconnected it will cause this message to appear.
If one of the sensors has become open circuit it will cause this message to appear.
DRIVING VSD’S
IT IS STRONGLY RECOMENDED THAT ANY APPLICATION USING THE 4-20mA, 0-
5V or 0-10V USES A GALVANIC ISOLATOR EQUAL OR SIMILAR TO THE GD690
In systems that are using the 4-20mA to drive VSD ‘s it is highly recommended
that the unit is fitted with a galvanic isolator type GD690 . This prevents noise
from the VSD entering the monitoring system and also prevents any induced
voltage spikes causing damage to the system.
If using the GD690 in the 0-10V or 0-5V o/p it will be non linear from the 0v –0-7v
on the 0-10v range and from 0v to 0.5V on the 0-5V range
When using voltage o/p’s the termination resistor MUST be fitted at the
equipment end of the line not at the 2400 end.
ALARM RELAYS
The alarm relays for alarm level 1 ,2, 3 are on the 4020 board
Their connections are shown in the non alarmed condition NC, NO and Comm
It is advisable NOT to switch 240v inductive loads through these relays .
If contactors are being switched use a 24V dc coil contactor.
SYSTEM
GAS 0.0%vol
FAULT ON SENSOR

Gas Detection (Australia) Pty Ltd Page 6 of 24 M-GDA-2400-16/01/2017 Rev 8
Installation
1. Locate the mounting holes in the base of the unit. Pay special attention to ensure that swarf
or dust does not enter the PCB area.
2. Drill out the required number of cable glands in the box base
3. Fit the gas detection control unit to the wall in the appropriate position. The GDA 2400 can be
fixed in any position to allow cable entry top or bottom. It is recommended that the unit be
situated away from heavy electrical loads or equipment that emits high levels of RFI.
4. The sensors must be connected to the instrument in accordance with drawings in the manual
Check all wiring before connecting mains. All units are configured for 240V, 50Hz unless
marked otherwise on the power supply.
5. On power up, the unit will inhibit its’ alarms. This lasts for 90 seconds and allows the sensors
to stabilise. This inhibit mode may be terminated prematurely by pressing the RUN button on
the main front panel.
6. The 2400 is factory set up .
Photograph shows standard 2400 with NO VSD drive (GD690)
4020
RELAYS
WIRED
HERE
AM001
SENSORS
WIRED
HERE
PSU
220V AC
WIRED
HERE
GD690 TO BE
MOUNTED
OUTSIDE OF BOX

Gas Detection (Australia) Pty Ltd Page 7 of 24 M-GDA-2400-16/01/2017 Rev 8
TITLE
D A T E
2 40 0 L A Y O U T D E TA IL S
2400-001-01 3AP R 2 0 1 6
WARNING
D O N OT T AM P E R OR A TTE M P T TO A D JUS T TH E T WO P OT S. TH EY A R E F AC TO R Y S E T .
4020 CONTROL UNIT
F A C TO R Y W IR E D
SEN SO R 1 SE N SO R 2
F AU L T R EL AY
SENSO R 1
ALARM RELAYS
ALARM RELAYS
NOTUSED
R S4 8 5
4 - 2 0 m A O R 0 - 1 0 V O /PS
+ - + - + -
AL A R M 1
AL A R M 2 AL A R M 3
F U S E
AUX O/ P
KEYPAD CON NEC TO R
R ESET
A B A B + IN -
O/P1 O/P2 O/P3 S2
O UT PU TS
P R2 P R3 P R1 P R4 P R5 P R6
- + - + - +
PF
WH IT E WI RE
3K3
PSU BATT
+24V DC OUTPUT 4-20mA I NPUT GND +24V DC OUTPUT 4-20mA I NPUT GND
CO M NC NO CO M NC NO CO M NC NO CO M NC NO CO M N C NO CO M NC NO
CO M NC NO
A C / L IV E A C / N E U T R A L E A R TH D C O UT P U T +2 4 V D C O U T P U T 0 V
POWER SUPPLY
IN PUT: 200-240VAC 0.45A OU TPUT: +24VDC 1.5A
F A C TO R Y W IR E D
SENSOR INPUT +24V DC
mA 0V/
Ear th
SENSORINPUT
+24V
DC
mA 0V/
Ear th
GN D E a rthGN D E a rth
AM 0 0 1 Ve r 2
Sp an Ze r o
+2 4 V
I ou t GN D Ea r th
Relay
Contact
GND
E arth
GND
E arth
GND
E arth
GND
E arth
CH 1 On CH 2 On CH 3 On C H 4 On C H 5 On C H 6 On
CH 7 On CH 8 On
GND
E arth
GND
E arth
2400 FRONT PANEL 2400 BACK PANEL
+ IN -
S1

Gas Detection (Australia) Pty Ltd Page 8 of 24 M-GDA-2400-16/01/2017 Rev 8
TITL E
DA TE
C ON N EC TI ON D ET A ILS OF 4 020 B OA R D JU L 201 6 JN 4 020 -0 01-00 1
24 V IN PUT D C
BA TTERY SUP PL Y INP UT
V OL TA GE FR EE R EL AY CO N TA CT S
N O R M A L L Y O P E N N O R M A LL Y C L O S E D C OM M O N
NO RM O P E N
NO RM C L O S E D
CO M M O N
4020 CONTROL UNIT
SENSOR 1 SENSOR 2
FAULT RELAY
S E N S O R 1
A L A R M R E L A Y S
A L A R M R E L A Y S
N O T U S E D
RS485
4-20mA OR 0 -10V O/PS
+ - + - + -
ALARM 1
ALARM 2
ALARM 3
FUSE
A UX O/P
KE Y PA D CO NN ECTO R
RESET
A B A B
+ IN - + IN -
O /P 1 O /P 2 O /P 3 S1 S2
OUTPUTS
PR2 PR3 PR1 PR4 PR5 PR6
- + - + - +
PF
P SU B AT T
+2 4V D C OUT PU T 4-20 m A INP U T GND +2 4V D C OUT PU T 4-20 m A INP U T GND
C O M N C N O C O M N C N O C O M N C N O C O M N C N O C O M N C N O C O M N C N O
C O M N C N O
A UX ILIA R Y V O L TA G E O UTP UT
2

Gas Detection (Australia) Pty Ltd Page 9 of 24 M-GDA-2400-16/01/2017 Rev 8
TITLE DATE
2500 SERIES TOXIC AND OXYGEN SENSORS
CONNECTION DETAIL FOR AN AM001 (FOUR 4-20mA 2 WIRE SENSORS)
AM001-001-02 3
MAY 2016
REMOVE CONNECTOR TO ACCESS LINK LINKS TO BE IN TO ENABLE EACH CHANNEL IF LINK LEFT IN AND NO SENSOR CONNECTED FAULT WILL ACTIVATE
WARNING
DO NOT TAMPER OR ATTEMPT TO ADJUST THE TWO POTS. THEY ARE FACTORY SET.
CONNECT SENSORS 2,3,4 TO CH I/P'S 2,3,4 USING SAME WIRING DETAIL AS SHOWN FOR SENSOR 1 IN CH 1
LINK TO BE IN POSITION SHOWN FOR ALL LOOP POWERED 2500 SERIES TOXIC AND OXYGEN SENSORS LINKS TO BE OUT TO DISABLE UNUSED CHANNELS
THIS DIAGRAM SHOWS A FOUR SENSOR SYSTEM. CH On LINKS 1 TO 4 ARE IN TO ENABLE CHANNELS 1 TO 4. CH On LINKS 5 TO 8 ARE OUT TO DISABLE CHANNELS 5 TO 8.
TWIN CORE SCREENED CABLE
(WHEN LINK IS REMOVED PLACE ON ONE PIN SO IT DOES NOT GET LOST)
SENSOR INPUT
+24V DC
mA 0V/
Earth
SENSOR INPUT
+24V
DC
mA 0V/
Earth
GND EarthGND Earth
AM001 Ver 2
Span Zero
+24V
I out
GND
Earth
Relay
Contact
GND
Earth
GND
Earth
GND
Earth
GND
Earth
CH1 On CH2 On CH3 On CH4 On CH5 On CH6 On
CH7 On CH8 On
GND
Earth
GND
Earth
GND
Earth
CH6 On
LINK =

Gas Detection (Australia) Pty Ltd Page 10 of 24 M-GDA-2400-16/01/2017 Rev 8
TITL E
DA TE
CO NN E CT IO N DE TA IL S F O R 2 40 0 W IT H 4-2 0 mA IS O LA T E D O U TP UT
2400-002-01 1
AP R 2016
4020 CONTROL UNIT
SE N SO R 1 SE N SO R 2
F AU L T R E L AY
SENSO R 1
ALAR M R EL AYS
ALAR M R EL AYS
NO T U SED
R S 4 8 5
4 - 2 0 m A O R 0 - 1 0 V O /P S
+ - + - + -
AL A R M 1
AL A R M 2 AL A R M 3
F U S E
AUX O / P
KEYPAD CO N N EC TOR
R ESET
A B A B + IN - + IN -
O/P1 O/P2 O/P3 S1 S2
O UT PU TS
P R2 P R3 P R1 P R4 P R5 P R6
- + - + - +
PF
WHIT E W IRE
3 K3 ?
PSU B AT T
+ 24 V D C O UTPUT 4 -2 0m A I NP UT G ND + 24 V D C O UTPUT 4 -2 0m A I NP UT G ND
CO M N C NO CO M NC NO CO M N C NO CO M NC NO CO M NC NO CO M NC NO
CO M NC NO
25 00 S ER I ES TOXI C A N D OXY GEN SE N SO R S
C ON N EC T S E N S OR S 2 ,3 ,4 TO CH I/P 'S 2 ,3 ,4 U S ING S A M E WIRI N G D ET AI L A S S HOWN FOR S E NS O R 1 I N C H 1
M A IN S I/P 22 0V 1 A FU S ED S U P PL Y
THIS DIA G RA M SHO W S A FO UR SE NSO R S YSTE M . CH On L INKS 1 TO 4 AR E IN TO EN ABLE CHA NNE LS 1 TO 4. CH On L INKS 5 TO 8 AR E O UT TO DIS ABLE CHA NNE LS 5 TO 8.
G D 6 90
4 - 2 0 m A 0 V O N V SD
FAC TO R Y W IR ED
A C / L IV E A C / NE UTRA L E A RTH DC O U TP U T + 24 V DC O U TP U T 0 V
PO W E R SU PPLY
SENSO R INPUT +24V DC
mA 0V/
Ear th
SENSO R INPUT
+24V
DC
mA 0V/
Ear th
GN D E arthGND E arth
AM 0 0 1 Ve r 2
Spa n Ze r o
+2 4 V
I ou t GN D
Ea r th
Relay
Contact
GND
E arth
GND
E arth
GND
E arth
GND
E arth
CH 1 On CH 2 On CH 3 On CH 4 On CH 5 On CH 6 On
CH 7 On CH 8 On
GND
E arth
GND
E arth
F AC T O R Y W IR E D

Gas Detection (Australia) Pty Ltd Page 11 of 24 M-GDA-2400-16/01/2017 Rev 8
GDA 2400 Setup and Configuration
Most systems are factory set up with the sensors ordered and this section will not
have to be followed
The GDA 2400 can be configured via a menu system. The menu system is navigated using the buttons
on the GDA 2400 front panel or keyboard interface.
Most systems are factory set up with the sensors ordered and this section will not
have to be followed.
The GDA 4020 sensor inputs can be configured via a menu system. The menu system is navigated
using the four buttons on the GDA 4020 front panel or keyboard interface. The screen is divided into
4 lines. The bottom line relates to the button underneath the display, or if using a keypad, the
button position on the key pad.
The following parameters are programmable by the user:-
1. Select Chan 1 or Chan 2
2. Select if it is ON or OFF
3. Input Location name
4. Input Gas name from list provided page 11.
5. Input the Units of measurement (ppm, %LEL, % VOL)
6. Select if the display is to show Value of gas level or OK whilst it is 20 % away from the alarm
level
7. Input the sensor Range
8. Alarm level 1 in preselected units (ppm, %LEL, % VOL)
9. Alarm level 2 in preselected units (ppm, %LEL, % VOL)
10. Alarm level 3 in preselected units (ppm, %LEL, % VOL)
11. Hysteresis
12. Sign Rising or Falling
13. Alarm Latched or unlatched
14. Alarm delay (seconds)
15. Relay on time (minutes )
ALL THE ABOVE IS REPEATED FOR BOTH CHANNELS IF BOTH SENSORS ARE ON

Gas Detection (Australia) Pty Ltd Page 12 of 24 M-GDA-2400-16/01/2017 Rev 8
The analogue outputs can be set to a number of functions as shown below.
OP
SENSOR
1
SENSOR
2
SCALED
SENSOR 1
SCALED
SENSOR 2
MAXIMUM OF
SENSOR 1 &2
AVERAGE OF
SENSOR 1 &2
OP1
YES
NO
YES
YES
YES
YES
OP2
NO
YES
YES
YES
YES
YES
OP3
NO
NO
YES
YES
YES
YES
In the scaled mode the 4-20mA update period can be set from 0-10 minutes. It will update the
4-20mA at the end of each update period with the value at the end of the period.
Each of the outputs can be set as a 4-20ma; 0-20ma or 0-10v.
IF 0-10v is used a 500R resistor must be connected across the output pins.
The above functions are set up on the Outputs menu (see page 16).
To enter the menu system power down the 4020 control board, hold in the two middle buttons ( < and
> ) then power up the control board while still holding the two buttons until two beeps are heard.
The functionality of the buttons changes slightly in some sub menus.
For purpose of clarity the button to be pressed is marked -
The first screen after entering menu system.
DO NOT ENTER TECH MODE: - A PASSWORD IS NEEDED. PLEASE CONTACT GDA.
IT IS FOR USE BY GDA TRAINED OPERATIVES
To Configure Sensor Inputs.
Enter Set Inputs to change all the sensor information required along with the alarm relay
information.
Enter Setup <>
Run < > Ent
Enter Tech Md <>
Run < > Ent
Enter Setup <>
Run < > Ent
Set Inputs <>
Exit < > Ent
Press Ent to enter
Setup menu
Press Ent to enter
Input Setup menu

Gas Detection (Australia) Pty Ltd Page 13 of 24 M-GDA-2400-16/01/2017 Rev 8
Select Channel Number
Select Channel On/Off
Edit Location Name
Press Ent to edit
Channel 2
(Follows CHAN 1
menu sequence)
CHAN 2 <>
Exit < > Ent
CHAN 1 <>
Exit < > Ent
CHAN 1
On/Off <>
= ON
Exit < > nxt
CHAN 1
On/Off <>
= OFF
Exit < > nxt
CHAN 1
Location <>
=CHAN 1
Exit < > set
Press nxt to
turn
channel OFF
CHAN 1
Location
=CHAN 1<
BS dec inc Ent
BS = Back Space
dec = Decrement alpha numeric character
inc = Increment alpha numeric character
Ent = Enter character at cursor
Ent = A 2nd time saves location name
Press Exit to
return to prev.
menu
Press nxt
to turn
channel
ON
Press Ent to edit
Channel 1
Press set to
edit Location
name
Press >to
Edit Location
Press >to select
Gas name
Press Exit to
return to
Channel Edit
at any time

Gas Detection (Australia) Pty Ltd Page 14 of 24 M-GDA-2400-16/01/2017 Rev 8
Select Gas Name
Selectable Gases
Gas Name
Chemical Formula
CO
Carbon monoxide
CO
FLM
Flammable
H2S
Hydrogen sulphide
H2S
NH3
Ammonia
NH3
NO2
Nitrogen dioxide
NO2
Gas
Gas
R22
R22 Refrigerant
R123
R123 Refrigerant
R134
R134a Refrigerant
R407c
R407c Refrigerant
R410
R410a Refrigerant
Refrg
Refrigerant
O2
Oxygen
O2
CO2
Carbon dioxide
CO2
CHAN 1
Gas name <>
= CO
Exit < > nxt
Press nxt to cycle through
the 14 available gases
names
Press >to select Units

Gas Detection (Australia) Pty Ltd Page 15 of 24 M-GDA-2400-16/01/2017 Rev 8
Select Units of Measurement
Select Status
CHAN 1
Units <>
= ppm
Exit < > nxt
CHAN 1
Units <>
= %vol
Exit < > nxt
CHAN 1
Units <>
= %LEL
Exit < > nxt
CHAN 1
Status <>
= Value
Exit < > nxt
CHAN 1
Status <>
= OK
Exit < > nxt
CHAN 1
Range <>
= 200 ppm
Exit < > set
Press >to
select Status
Press nxt to
cycle through
Units ppm,
%vol, %LEL
Press >to
select Range
Press nxt to select
Status Value
Press nxt to
select Status OK

Gas Detection (Australia) Pty Ltd Page 16 of 24 M-GDA-2400-16/01/2017 Rev 8
Edit Range
Edit Alarm Levels
CHAN 1
Range <>
= 200 ppm
Exit < > set
CHAN 1
Range
= 200_ppm
Canc dec inc Ent
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Press >to
select Alarm
Levels
CHAN 1
Alarm lvl 1 <>
= 15 ppm
Exit < > set
CHAN 1
Alarm lvl 2 <>
= 30 ppm
Exit < > set
CHAN 1
Alarm lvl 3 <>
= 60 ppm
Exit < > set
CHAN 1
Alarm lvl 2
= 30_ppm
Canc dec inc Ent
CHAN 1
Alarm lvl 1
= 15_ppm
Canc dec inc Ent
CHAN 1
Alarm lvl 3
= 60_ppm
Canc dec inc Ent
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Press >to
select Alarm
Level 2
Press >to
select Alarm
Level 3
Press >to select
Hysteresis
Press set to edit
Range
Press set to edit
Alarm Level 1
Press set to edit
Alarm Level 2
Press set to edit
Alarm Level 3

Gas Detection (Australia) Pty Ltd Page 17 of 24 M-GDA-2400-16/01/2017 Rev 8
Edit Hysteresis
Select Sign
Alarm Latch
Edit Alarm Delay
CHAN 1
Hysteresis
= 2 ppm
Canc dec inc Ent
CHAN 1
Hysteresis <>
= 2 ppm
Exit < > set
CHAN 1
Sign <>
= RISING
Exit < > nxt
CHAN 1
Sign <>
= FALLING
Exit < > nxt
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Press >to select
Sign
Press set to edit
Hysteresis
Press >to select
Sign
Press nxt to
select Sign Falling
Press nxt to
select Sign Rising
CHAN 1
Latch Alarm <>
= NO
Exit < > nxt
CHAN 1
Latch Alarm <>
= YES
Exit < > nxt
CHAN 1
Delay <>
= 2 Sec
Exit < > set
CHAN 1
Delay
= 2_Sec
Canc dec inc Ent
Press >to select
Delay
Press nxt to
select Yes
Press nxt to
select No
Press >to
select Delay
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Press >to select
Relay On Time
Press set to edit
Alarm Delay

Gas Detection (Australia) Pty Ltd Page 18 of 24 M-GDA-2400-16/01/2017 Rev 8
Alarm Relay On Time
CHAN 1
Relay On Time <>
= 0 Min
Exit < > set
CHAN 1
Relay On Time
= 0_Min
Canc dec inc Ent
CHAN 1
On/Off <>
= ON
Exit < > nxt
Set Inputs <>
Exit < > Ent
Canc = Cancels edit
dec = Decrease value (hold to decrease x10)
inc = Increase value (hold to increase x10)
Ent = Saves value (exits edit)
Press >to return
to select Channel
1 On/Off
Press set to edit
Alarm Relay On
Time
Press Ent to edit
Channel 2
(Follows CHAN 1
menu sequence)
Enter Setup <>
Run < > Ent
CHAN 2 <>
Exit < > Ent
CHAN 1 <>
Exit < > Ent
Press Exit to
return to Setup
menu
Press Exit to
return to Select
Channel
Press >to select
Channel 2
Press < or > to
select Channel
1
Press Exit to return
to Main Setup
Press Run to
Resume Normal
Operation

Gas Detection (Australia) Pty Ltd Page 19 of 24 M-GDA-2400-16/01/2017 Rev 8
Setting up of analogue outputs
(4-20ma 0- 20ma; 0-5v; 0-10v)
The analogue outputs can be used to drive ancillary equipment such as VSD inputs or inputs into
other BMS systems.
Select Output 1, 2 or 3
Set Outputs <>
Exit < > Ent
Enter Setup <>
Run < > Ent
Set Inputs <>
Exit < > Ent
Press Ent to enter
Setup menu
Press Ent to enter
Output Setup menu
Press >to change to
Output Setup menu
Output No 1 <>
Exit < > Ent
Output No 2 <>
Exit < > Ent
Press >to select
Output No. 2
Press < to select
Output No. 1
Press > to select
Output No. 3
Press Ent to edit
Output No. 1

Gas Detection (Australia) Pty Ltd Page 20 of 24 M-GDA-2400-16/01/2017 Rev 8
Select Output Type: Current or Voltage
IF 0-10v is used a 500R resistor must be connected across the output pins.
Output No 1
cur/volts out <>
=CURRENT
Exit < > nxt
Output No 1
cur/volts out <>
=VOLTAGE
Exit < > nxt
Output No 1
Mode <>
=OFF
Exit < > nxt
Press > to select
Mode of Output
No. 1
Press nxt to select
Voltage Output
Press nxt to select
Current Output
Press > to select
Mode of Output
No. 1
Output No 1
Mode <>
=Chan Out=In
Exit < > nxt
Output No 1
Mode <>
=MAX of 1 & 2
Exit < > nxt
Output No 1
Mode <>
=AVERAGE 1 & 2
Exit < > nxt
Press nxt to select
Chan Out=In
Press nxt to select MAX
of Chan 1 & Chan 2
Press nxt to select Average
of Chan 1 & Chan 2
Press nxt to select
Scaled Chan 1
Press Exit to return
to Output No.
Select screen
Press nxt to cycle through
output options