GDS GasVac LG-1, Руководство по эксплуатации

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T E C H N O L O G I E S
XDI-XDIWIN – 15/30J
PRIME SENSOR – Infrared
Technical Sheet
ref C1698 Issue Bv.3
Power Supply
15 to 30Vdc 24v nominal
Outputs
3 wire 4~20mA / 4 wire CANbus
Relays
Low alarm SPCO
(when High alarm SPCO 0-5A @ 30Vdc
fitted) Fault alarm SPCO
Inhibit option during servicing
Logging Intervals - variable time
Roll over/stop
Storage - 2,880 readings
Requires RS232 lead
PC or laptop (dedicated)
Hyperterminal (download from GDS website)
Set up procedure:
New sensors are supplied ready to connect to the system. The
following procedure is for full set up and where the sensor cell
has been replaced - only sections 5, 6, 7, 9 and 11 need to be
carried out. Voltage measurements are made wrt AG unless
otherwise specified.
1. Insert jumpers J20 and J6 position SO for 4-20mA source
output.
2. Turn sensor voltage potentiometer anti-clockwise
(minimum voltage).
3. Connect sensor to J2 terminal W-white Y-yellow P-pink.
4. Connect 24V + and 0V to JP10, short the 4~20mA
terminal by inserting test link at J9.
5. Measure the sensor voltage at SV and adjust by turning
sensor volts pot for the correct reading 3.5v DC.
DO NOT EXCEED THE REQUIRED VOLTAGE
OTHERWISE PERMANENT DAMAGE WILL OCCUR.
6. Rotate 20mA pot fully anti-clockwise (minimum span).
7. When in clean air the sensor bridge is zeroed by adjusting
zero pot until the dual colour LED D1 is off.
8. Connect PC hyper terminal using RS232 Combi adaptor
(part no. 160-510 and lead part no. 160-515) at 4800
baud connected to J3 and initialise the sensor using (C)
calibration mode, then shift + ($) command from the
keyboard.
9. Using a digital mV meter measure across test pins TP8/9
and adjust 4mA pot for 4mA (zero) = 4mV
10. Then press (Z) on the PC to zero the reading.
11. Apply a known test gas to the sensor (50% F.S.D.) for 1
minute at a flow rate of 1 litre to give a 12mA = 12mV
across test pins TP8/9, adjust 20mA pot for correct mV
reading.
12. When using a PC press (S) to enter span mode and using
(H) or (L) adjust for the correct reading.
13. Press (space) to exit span and then (X) to exit the calibration
mode.
An example of continuous data output to the PC from a
Flammable sensor is shown below and is the format for other
gas types.
O , H and L represent the Over
Range High and Low alarms
respectively.
D indicates if a duplicate address
is detected
F indicates a fault present
I shows that this sensor has its alarms inhibited
under the O H L the ^ ^ v represent the direction of the
alarms. L is falling and H and O are rising. A(*) under the
letter(s) OHLDFI represents a detected state so in this example
the sensor would be in high alarm and a fault present.
‘Gas val 35.6’ represents the value of the gas present at the
sensor head. Pressing (R) on the PC causes a reset to occur.
Gas type with address and serial number are then output to the
PC together with alarms and calibration date.
A full command list via PC is available by pressing the letter (P)
which will relist on the PC.
14. Connect the sensor to a Combi alarm panel and ensure
that it reports in correctly.
Note:- Fit the end of line (EOL) link J1 if the sensor is to be
installed at the end of the sensor cable.
15. If front panel display board is fitted via connector J5 and
U12 adjust contrast for LCD contrast.
16. Remove J9 test link for normal operation.
17. Insert link J12 to enable the bridge fault detection.
(4-20mA output falls to 2mA in fault).
18. Ensure J29 address link is removed (this is only used when
changing address from a Panel).
Flam %LEL
O H L D F I
^^v
-*--*-Gas val = 35.6
Command Use
A = Set CAN address Sets the CAN address
G = Select gas type Select the gas type from a list
Z = Zero Press when no gas on sensor to give zero
S = Span Use when calibration gas applied,
H and L change reading
D = Enter calibration date Enter the calibration date
Y = Toggle auto zero Auto zero is ON or OFF, small drift is cleared
H = Set high alarm Sets the high alarm threshold
L = Set low alarm Sets the low alarm threshold
O = Set over range alarm Sets the over range alarm threshold
P = List command List these commands on screen
X = Exit calibration mode Exit this PC mode
$ = Initialise this sensor Use on new PCB to set gas type to Flam
U = Alarm direction Sets rising or falling alarms
R = Range Allows a change in maximum value
N = Decimal points Toggles between 1 and 2 decimal places
E = Edit user gas text Choose gas description
B = Toggle deadband Deadband of 2.5% can be on or off
F = Toggle fault Input External fault input contact can be disabled
# = Normally energised Low /high alarm relays and fault relay can be
made normally energised
V= View gas log From current log, display how many historical
readings to display, up to 2880
% = Clear gas log Set all 2880 log readings to 0.00
I = Log interval Choose how many seconds between each log
reading and whether the log will roll over or
stop at 2880 (60 second interval and 2880
readings = 48 hours)