Emerson Dixell GDS66M, Installing And Operating Instructions

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1592038710 Gas Leak Detector Modbus GB 01.12.2016 GDS41M-GDS66M-GDI41M-GDI66M 12/28
4.1 WIRING AND SETTINGS
ITEMS DESCRIPTION
Enclosure Access
To open the standard sensor enclosure, turn the cable clamp
1/2 turn counter-clockwise to loosen the internal gland nut,
depress the clip on top of the enclosure and open.
Reverse to close.
(Note: For the IP66 enclosure, use the four bolts on the front
cover.)
Power
12-24V AC/DC, connect at positions 0V and +V at connector
block CN1.

For AC: Jumper A is on, D is off. (See Figures)

For DC: Jumper A is off, D is on. (See Figures)
Default factory setting is DC.
Use 2 wires, typically 1 mm
2
(minimum).
Output
Connect two wires to terminal block CN2 positions 0V and V or I
for voltage or current, respectively:

Connect 4-20mA at CN2 positions 0V and I

Connect voltage output at CN2 positions 0V and V
Not use a common ground for these connections.
Relay Set Point
P1 sets the trip point for the relay and audible alarm using the 0-
5V scale (measure at test points 0V and alarm test point REF1).
Default factory setting is 50% of the range.
Time Delay
A time delay for the operation of the relay and audible alarm can
be selected using jumpers JP5 and JP6.
Default factory setting is zero.
Audible Alarm
The audible alarm can be disabled using jumper JP3.
Default factory setting is enabled.
4.2 OPERATION AND STABILIZATION
On powering up, the Gas Sensor will sense for the presence of gas after an initial warm-up delay
of 5 minutes. The green LED will flash at 1 second intervals during the warm-up.
In an alarm condition:
•
green LED stays on and the red LED is on
•
audible alarm operates (if not disabled and after delay, if set).
•
relay output activates (after a delay, if set)
•
V and I output changes proportionally with gas concentration.
In a fault condition:
•
green LED will be off and the red LED will be on
•
voltage/current fault output will activate:
o
2mA on the 4-20mA output
o
0.5V on the 1-5V output
o
1.0V on the 2-10V output.
The typical time to stabilize the Gas Sensors is 1÷3 minutes.