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UD10 DISPLAY UNIT
C2401
orientAtion
The device must be mounted in a vertical position only,
with the GT3000 pointing down.
4.3
BLACK
RED
Sensor Connector
Output Loop
Connector
4-20 mA +
P1-3
4-20 mA –
P1-2
SHIELD
P1-1
P1
J2
COM
J2-3
J2-2
RS485 A
J2-1
RS485 B
MODBUS
Connector
Power Supply Connector
UD10 Wired to GT3000 Detector with Sensor Termination box
SEE NOTE 1
SENSOR TERMINATION BOX
J3
HIGH ALARM COM
J4-1
HIGH ALARM NC
J4-2
HIGH ALARM NO
J4-3
AUX ALARM COM
J4-4
J4-5
AUX ALARM NC
AUX ALARM NO
J4-6
J4-7
LOW ALARM COM
J4-8
LOW ALARM NC
LOW ALARM NO
J4-9
FAULT COM
J4-10
J4-11
FAULT NC
FAULT NO
J4-12
J4
P2
NOTE 1
NOTE 2
liVe mAintenAnce
The sensor module on the GT3000 Gas Detector
can be hot swapped, i.e. replaced without
removing power or de-classifying the area. To
replace a GTX Transmitter connected to the UD10
with a new transmitter or a different detector type,
the area must be de-classified.
Removing the sensor module with power applied
will result in a fault condition until a new sensor
module of the same type is installed.
replacing an oxygen sensor, this action will also
result in an alarm condition as the decreasing
4-20 mA signal passes through the alarm range.
Inhibit response devices to prevent unwanted
actuation.
For complete information regarding sensor replacement
with the GT3000 Gas Detector, refer to the GT3000
instruction manual number 95-8616.
b-2
GREEN
GT3000
GAS DETECTOR
GROUND THE SHIELD AT THE DISPLAY
UNIT END ONLY.
HOUSINGS MUST BE ELECTRICALLY
CONNECTED TO EARTH GROUND.
noTe
noTe
When
95-8618
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