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6 .3
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
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
MTL5531
PWR
Figure 6 .17:
Top label
for MTL5531
37
Pulse, Vibration and Foundation Fieldbus modules
MTL5531 - Vibration Transducer Interface
Hazardous area
COM
Vibration
3-
SIG
wire
transducer
V–
3
Vibration
2-
2
wire
transducer
1
Terminal
Function
Transducer power V–
1
2
Signal
3
Common
11
Signal output –ve
12
Signal output 0V
13
Supply –ve
14
Supply +ve
2-/3-wire transducer setting switch
Mode
2-wire (3 .3mA)*
3-wire (20mA)
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
In any other orientation, i .e . with the module horizontal, then the maximum ambient
Eaton produce the MS010 DIN rail module spacer for this purpose
*Revision status is the 2 digits after the +++ in the barcode number
Safe area
6
7
5
8
4
9
3
10
–ve
2
11
1
12
0V
13
14
20 to 35V dc
OFF position
ON position
2-/3-wire
* Note: When using 2-wire sensors,
SW
ensure that terminals 1 and 2 are linked
OFF
as shown in the wiring diagram above.
ON
enables air to flow through the module .
temperature is limited to:
• Close packed = 45°C
• Minimum of 10mm spacing = 55°C
(packs of 5 - see Section 4 .3)
Monitor
Vs–
Vs+
INM 5500 Rev 11
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