INM 5500 Rev 11
76
10 .4 .3 Testing
Make the safe- and hazardous-area connections shown in figure 10.7 and carry out the
following procedure:
a Set the current source or sink to 12mA
b Adjust each trip potentiometer until the associated LED just
extinguishes.
c With sources of 11.5mA and 12.5mA carry out the following
checks:
Table 10 .5
Current
High alarm
Low alarm
Relay
Relay
LED
11 - 12
8 - 9
10 - 11
7 - 8
LED
11 - 12
8 - 9
10 - 11
7 - 8
11.5mA
On
closed
open
Off
open
closed
12.5mA
Off
open
closed
On
closed
open
Figure 10.7: Test circuit for MTL5314