72
10.3.3 Testing
Remove all safe- and hazardous-area connections and apply 24V dc to terminals 13 and
14 as shown in figure 10.6. Check that the green power LED (on top of the unit) is on. Put
all switches in the On position. With no load, check for nominal current of 60mA ±5mA at
terminal 14. Correct operation of the communication modes is indicated by signals received
and/or transmitted.
dc supply
-
+
Figure 10.6: Test circuit for MTL5051
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