TX6351 • TX6352 User Manual
28 P5536.1600 rev B
P5536.1600 rev B 29
3.4.3 5 to 15 Hz Output Signal
A square wave, frequency variable output that
is proportional to the measured value.
A pull up resistor may be required at the
monitoring device.
3.4.4 Contact Output Signal
Dual independent output contacts for remote
signalling and control. Setpoint values for
GENERAL alarm and HIGH alarm are setup
during manufacture to prescribed levels
appropriate to the type of gas intended to be
monitored; determined by the gas sensing
module.
The setpoints may be adjusted to preference.
Checkpoint
The relay contacts are clearance compatible
for use with other intrinsically safe circuits
emanating from diff erent IS power sources.
Section 4.4.3
3.4.5 RS485 Data Output Signal
RS485 serial data output with analogue signal
intelligence.
Use in conjunction with a PC for data display
and setpoint alarm warnings.
Up to 32 sensors acting as slaves can
communicate with the master unit on a single
data cable.
The address code of the sensor is marked on
the duty label of the sensor.
Physical layer: RS485
Protocol:
Trolex proprietary
Connection mode: Modbus
Number of points: 32
Maximum distance:
1,000 m
Recommended cable (specifi ed in BS5308 Part
1) for locally powered sensors:
•
1 twisted pair
•
0.5 mm
2
•
Overall screen
Recommended cable for sensors that are
powered through the data cable:
•
2 twisted pair
•
0.5 mm
2
•
Individual/overall screen
www.trolex.com
www.trolex.com
