INM 5500 Rev 11
37
6.3 Pulse, Vibration and Foundation Fieldbus modules
Single and dual channel modules are available to transfer vibration probe signals from a
hazardous area to a safe one. Similarly, pulses from a switch,
proximity detector, current pulse
transmitter or voltage pulse transmitter, located in the hazardous area,
can be safely transferred
to the safe area.
6.3.1 MTL5531 - Vibration Transducer Interface
Single channel
The MTL5531 repeats a signal from a vibration sensor in a hazardous area, providing an output
for a monitoring system in the safe area. The interface is compatible with 3-wire, eddy-current
probes and accelerometers or 2-wire current sensors, and selection of the mode is made with
a switch located on the side of the module
Hazardous area Safe area
6
5
4
3
2
1
7
8
9
10
11
12
13
14
COM
SIG
V–
Vibration
transducer
Vibration
transducer
Vs–
Vs+
20 to 35V dc
–ve
0V
Monitor
3-
wire
2-
wire
2
1
3
Terminal Function
1
Transducer power V–
2 Signal
3 Common
11 Signal output –ve
12 Signal output 0V
13 Supply –ve
14 Supply +ve
OFF position
ON position
2-/3-wire
2-/3-wire transducer setting switch
Mode SW
2-wire (3.3mA)* OFF
3-wire (20mA) ON
* Note: When using 2-wire sensors,
ensure that terminals 1 and 2 are linked
as shown in the wiring diagram above.
WARNING - Revision status 05 and below*
To enable optimum heat dissipation the recommended orientation for mounting is
with the module vertical, i.e. with the vents in the case at the top and bottom. This
enables air to flow through the module.
In any other orientation, i.e. with the module horizontal, then the maximum ambient
temperature is limited to:
• Close packed = 45°C
• Minimum of 10mm spacing = 55°C
Eaton produce the MS010 DIN rail module spacer for this purpose
(packs of 5 - see Section 4.3)
*Revision status is the 2 digits after the +++ in the barcode number
Figure 6.17:
Top label
for MTL5531
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