E:
T:
0113 286 0166
F:
0113 287 8178
GDS TECHNOLOGIES LTD
|
FUSION POINT
|
ASH LANE
|
GARFORTH
|
LEEDS
|
LS25 2GA
|
UK
www.gds-technologies.co.uk
T E C H N O L O G I E S
Technical Sheet
ref C1714
TECHNICAL
Not for use in hazardous zone areas
Sensor Type
Flammable – catalytic
Toxic, Oxygen – electrochemical
Refrigerant – semiconductor
CO2 – infrared
Power Supply
18 to 30vDC optional 90~260vAC
Consumption
1.2 W
Alarm Relays
Signal Relay
1 SPCO volt free contact 3A @ 230vAC
Global A1/A2/A3
A2/A3 only option latched/unlatched –
selectable N/E – N/D
Mains Relay
A2 (mains option only)
Permanent mains N/E – N/C – solenoid valve
Alarm N/D (valve closed)
Indicators
Power (Green LED)
Gas alarm – Green LED to Red
Alarm 1
Slow flash + intermittent sounder
Alarm 2
Rapid flash + high rate sounder
Alarm 3
Co constant sounder
Fault
Amber + slow intermittent sounder
Sounder
85dB @ 10cm
Permanent mute option
Ambient Temp
Operation: -5 to +50°C
Storage: +5 to +55°C
Protection
Standard Sensor – IP42
Weatherproof – IP64
Dimensions
Standard
L 83mm x H 83mm x D 36mm
Weatherproof
L 145mm x H 145mm x D 60mm
Options
Duct sensor probe – L27mm x 28mm diameter
Factory Settings
Alarms - latched
Mains Relay - normally energised
Signal Relay - normally de-energised - Active AL1,
AL2, AL3
Testing/
Press and hold the reset button for 15 seconds
Maintenance
the relay will
activate the LED will flash and the
sounder will toggle ON/OFF. If the sensor is
connected to the Defender control panel the alarm
will be displayed on that zone. Releasing the test
button will return the sensor to normal operating
mode. To ensure that the sensor responds correctly
to the presence of gas it should be exposed to test
gas at six monthly intervals.
For further details contact your product supplier
service technician.
Adjustments
Sensor zero in clean air – turn zero pot until the
green zero LED is ON. Calibration – FSD = 4v
measured at (TP2/3) Fig. 2 and (TP2/4) fig. 3 adjust
using gain pot for test gas value.
NOTE: Link selection must be made with power off.
This document is not contractual and the equipment specification may be modified at any time without prior notice.
Fig 1:
Mains Input PCB
PCB 317
+24V
SIG 0V
Output
Gas Valve
Mains
Supply
90~ 260V
AC
Mains
Input
Relay
L
N
E
E
N
L
Fig 2
NC
C
NO
NC
C
NO
Zero
LED
Zero
LED
Relay NE
Latch
Latch
Unlatch
Unlatch
No link
A1 unlatch alarm
A1 A2 A3
A1
A2
A3
Alarms
Alarms
Mute
Mute
J4
J4
+
Sig
_
+
Sig
_
J3
J3
RV1
Reset
Sounder
Sounder
Reset
J2
J2
J22
J30
program
J30
program
Oxygen
Sensor
Sensor
LED
LED
J5
J9
J18
J13
J24
J11
J11
J10
J20
J9
J14
J7
J15
J19
J17 J16 J21 J27
J1
EOL
J1
EOL
TP3
TP2
J10
RV2
RV2
RV1
Spare
Spare
DC In
socket
(No control
unit)
DC In
socket
(No control
unit)
Zero
Gain
Gain
Zero
J5 N/E Relay
+
Sig
_
+
Sig
_
J8
J8
PCB 271
F
T
PCB 277
W
Y
P
W
Y
P
Relay
Relay
No link
A1 unlatch
Sensor Volts
J5 + J9 = 2V
J5 = 3V
J9 = 4V
J5 / J9 Open = 5V
Relay
Spare
To Controller
Links
Links
Spare
To Controller
Relay
J35
J22
J21
J20
J19
J5
J2
K8
K7
K6
K5
SW1
VR1
J30
J3
J29 J32 J33 J34
J1
J15
J6
J7
Z1
Z2
Z3
Z4
Z4
J10
J28
J12
J13
J14
J16
Z1 Z2 J3 J4
J17
J36
J18
D98
F7
Zone enable -
fi t link to activate
Zone
enable
links
Z1 - Z4
Spare Links
EOL
A1/A2
latch
unlatch
No link
Lo unlatch
To Combi System
S5
Reset
S1
Test
S2
Inhibit
S3
S4
PC comms
via hyperterminal
Link for relay A2 only
Program
Right - Left
Display Text
Reset
PCB 278
Contrast Adjust
Mains
Z1
Zone 1-4 SENSOR INPUTS
Z2
Z3
Z4
+
-
DC O/C 0V
24v Hi Lo 0v
+
SIG 0V
+
SIG 0V
+
SIG 0V
+
SIG 0V
L N E
Flt
Global
relay
Mains
selector
115/230
1A
Antisurge
Fuse
24v output 100mA max
Sink when inhibit on
Sink when buzzer on
0V
Relay
A1
(Z1)
Relay
A2
(Z2)
Relay
A3
(Z3)
Relay
Flt
(Z4)
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
NO
NE
NE
NE
NE
1
4
23
Fig. 1
Fig. 2
Fig. 3
TP2
TP4
Flammable Sensor
Fig 3
NC
C
NO
NC
C
NO
Zero
LED
Zero
LED
Relay NE
Latch
Latch
Unlatch
Unlatch
No link
A1 unlatch alarm
A1 A2 A3
A1
A2
A3
Alarms
Alarms
Mute
Mute
J4
J4
+
Sig
_
+
Sig
_
J3
J3
RV1
Reset
Sounder
Sounder
Reset
J2
J2
J22
J30
program
J30
program
Oxygen
Sensor
Sensor
LED
LED
J5
J9
J18
J13
J24
J11
J11
J10
J20
J9
J14
J7
J15
J19
J17 J16 J21 J27
J1
EOL
J1
EOL
TP3
TP2
J10
RV2
RV2
RV1
Spare
Spare
DC In
socket
(No control
unit)
DC In
socket
(No control
unit)
Zero
Gain
Gain
Zero
J5 N/E Relay
+
Sig
_
+
Sig
_
J8
J8
PCB 271
F
T
PCB 277
W
Y
P
W
Y
P
Relay
Relay
No link
A1 unlatch
Sensor Volts
J5 + J9 = 2V
J5 = 3V
J9 = 4V
J5 / J9 Open = 5V
Relay
Spare
To Controller
Links
Links
Spare
To Controller
Relay
J35
J22
J21
J20
J19
J5
J2
K8
K7
K6
K5
SW1
VR1
J30
J3
J29 J32 J33 J34
J1
J15
J6
J7
Z1
Z2
Z3
Z4
Z4
J10
J28
J12
J13
J14
J16
Z1 Z2 J3 J4
J17
J36
J18
D98
F7
Zone enable -
fi t link to activate
Zone
enable
links
Z1 - Z4
Spare Links
EOL
A1/A2
latch
unlatch
No link
Lo unlatch
To Combi System
S5
Reset
S1
Test
S2
Inhibit
S3
S4
PC comms
via hyperterminal
Link for relay A2 only
Program
Right - Left
Display Text
Reset
PCB 278
Contrast Adjust
Mains
Z1
Zone 1-4 SENSOR INPUTS
Z2
Z3
Z4
+
-
DC O/C 0V
24v Hi Lo 0v
+
SIG 0V
+
SIG 0V
+
SIG 0V
+
SIG 0V
L N E
Flt
Global
relay
Mains
selector
115/230
1A
Antisurge
Fuse
24v output 100mA max
Sink when inhibit on
Sink when buzzer on
0V
Relay
A1
(Z1)
Relay
A2
(Z2)
Relay
A3
(Z3)
Relay
Flt
(Z4)
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
NO
NE
NE
NE
NE
1
4
23
Fig. 1
Fig. 2
Fig. 3
TP2
TP4
Toxic/Oxygen Sensor
