Eaton MTL4516 - MTL4532 - Pulse Isolator

INM 4500/4600 Rev 12
38
DRAFT - 22 March 2018 DRAFT - 22 March 2018
6.3.2 MTL4532 - Pulse Isolator
Pulse & 4/20mA current outputs
The MTL4532 isolates pulses from a switch, proximity detector, current pulse transmitter
or voltage pulse transmitter located in a hazardous area. It is ideal for applications
involving high pulse rates and fast response times, by repeating the pulses into the safe
area, and the transistors used on the pulse output will switch +ve or –ve polarity signals.
It may be used immediately in simple or legacy mode, or it may be software configured
for more specific applications - see next page for either option. With configuration, an
analogue output proportional to frequency is available, together with a relay output,
which may act as an alarm.
Note: For reliable, long-term operation the load on the output switching relay should not
be less than 50mW, e.g.10mA at 5VDC.
Hazardous area Safe area
6
5
4
3
2
1
4/20
mA
3-wire
current
pulse
4/20
mA
–
+
3-wire
voltage
pulse
5
4
1
2-wire
current
pulse
Voltage
pulse
Current
pulse
5
1
Inhibit
Load
Alarm
4/20mA
Configuration
socket
–
+
1
4
+
Pulse
–
+
Pulse
Vs–
Vs+
20 to 35V dc
4
3
V
4/20
mA
3
1
3
9
8
7
12
11
10
13
14
Terminal Function
1 Common input –ve
2 Switch/proximity input +ve
3 Current pulse input +ve
4 Transmitter supply +ve
5 Voltage pulse input +ve
6 Inhibit input +ve
7 Pulse output +ve
8 Pulse/Current output –ve
9 Current output +ve
11 Alarm/Current output –ve
12 Alarm
13 Supply –ve
14 Supply +ve
Vsp SW1 SW2
3V ON ON
6V ON OFF
12V OFF OFF
OFF position
ON position
1 2 3 4
SW1 SW2 SW3 SW4
Vsp Vsp LFD Mode
LFD SW3
OFF OFF
ON ON
Switches located on the edge of the module define the mode of operation.
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


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Figure 6.22:
Top label for
MTL4532