GDS XDI-15/30J Manual

XDI win –15/30J
( )
TOXIC/OXYGEN GAS SENSOR – TRANSMITTER
Electrochemical cells – Oxygen/Toxic gases
Transmitter: PCB 337 | Software version: V2.2.5 ➝ | Single magnet setup
Reference documents
C1 144 Equipment Installation Guidelines
C1770 Wiring & Terminations for Sensors and Panels
G973 Gas Sensor Locations
C1548 Aspirated Sensor
Sensors
The positioning of sensors depends upon the type of gas to be
monitored and its density with respect to air. See G973
Heavier than air gases
(Carbon Dioxide, Hydrogen Sulphide) –
locate at 15 to 20 cm from floor level.
Lighter than air gases
(Ammonia, Hydrogen Cyanide) –
locate at 5 to 10cm from the ceiling.
All equipment should be mounted away from direct heat and in
accordance with its IP rating.
Cell replacement / transmitter calibration
New sensors are supplied ready to connect to the system with all
jumpers inserted. This procedure shows how to recalibrate as part
of a routine maintenance or cell replacement.
1. If bench testing the PCB see section E3
2. Using a digital mV meter measure across test pins TP2/3 and
adjust Zero pot RV2 (course adjust) until LED D9 goes green
for 4mA (zero) = 4mV (sensor bridge zero)
3. Apply a known test gas to the sensor (e.g. 100ppm CO)
for 1 minute at a flow rate of 1 litre to give a 13mA = 1 1mV
across test pins TP2/3, adjust gain pot RV4 for correct mV
reading.
4. For display and relay set up see sections B or E
Fig. 1 Transmitter
TP1
ov
ADD
(W)
J12
Address
D2 D3
Fault/Inhibit
Amber LED
CONTRAST
U14
VR1
RV2
ZERO
Zero Pot
(4mA)
J14
TP10
J13
J16
O2
J15
+
Insert jumper J16
when using Oxygen Cells
win
(
(P) (Y)
TP3
TP2
J4 J3
J1
TEST
EOL
RELAYS
Toxic/Oxygen
Can Sensor
PCB 337
D5
J17
DISPLAY D10
J7 JTAG
J11
GAIN
J19
J18
D9
-
O2
RV4
INV
Gas Status LED
SENSOR
GAIN
CELL
Gain Pot (20mA)
)
Setting/adjusting using display board
push buttons or single magnet
On power up the unit will be inhibited for a 120 second
warm up period displayed as a countdown on the display
(this may be overridden by pressing 1).
Carry out procedure A. To access the menu press 2
(equipment SN will be displayed) followed by the entry
code 231, pressing 1 or 3 will allow travel through the menu
and adjustment of settings, pressing 2 enables access into
the selected menu field and on completion pressing 2 will
confirm your selection.
Menu
1. Exit
2. Inhibit – relays and 4~20mA signal output to 2mA
3. Address – CANbus sensor address (Combi)
4. Zero/span (fine adjust)
5. Alarm levels set – valve/direction (rising/falling)
6. Exit
7. Delay to alarm (relays) 0~255s
A 8. Relay off delay 0~255s
Default setting 0 seconds
9. Normally energised/de-energised relays
Default setting de-energised
10. LED/relay test
1 1. Exit
12. Set 4 and 20mA output – calibrate
13. Display gas reading decimal point setting
14. Gas type selection
15. Gas range select
16. Exit
17. Dead band setting, OFF, Display only, full signal ±
2.5% of scale reading. Default setting OFF
18. Relay operation select – relay 1, 2, 3
19. Select mA input signal fault trip level (toxic/oxygen
4~20mA input only). Default setting 2.5mA
20. Software version / product serial number
J9 + J10
Power supply
(select sink/source)
4-20mA Pins (mV)
15 to 30Vdc 24v nominal
output (y)
Initial power ON – 120s inhibit warm up period
Outputs
4-20mA Input
3 wire 4~20mA (Direct)/4 wire CANbus (Addressable)
Logging
S
GDS Terminal
Connection
(Micro USB B)
Requires
Options
Technical Sheet ref C1882Cv1
Intervals – variable time
Roll over/stop
Storage – 2,880 readings
USB A to USB micro B cable
(GDS part No. 160-51 1)
PC or laptop (dedicated)
GDS Terminal
(download from GDS website)
3 Relays
SPCO 3A (none inductive) @ 30vDC
www.gds–technologies.co.uk
Doc No. 194D28C
B
C