Emerson 2120 Quick Start Manual page 11

December 2016
4.5 NAMUR electronics (light blue label)
Ex
Ex
High level, dry = on
Dry On
0.3
1
3
10
30
Seconds Delay
-
+
>2.2 mA
LED on continuously
Note
This cassette is suitable for Intrinsically Safe applications and requires an isolating
barrier. See "Product Certifications" on page 15
This electronics cassette is also suitable for non-hazardous (safe) area
applications. It can only be interchanged with the 8/16 mA cassette.
Do not exceed 8 Vdc.
- +
8V
dc
1 2
I = 2.2 ... 2.5 mA
ON
I = 0.8 ... 1.0 mA
OFF
I
< 1.0 mA
FAULT
-
+
A certified intrinsically safe
isolating amplifier to IEC 60947-5-6
Wet On
0.3
1
3
10
30
-
+
<1.0 mA
LED flashes each
second
OPERATION MODE
Dry On Wet On
Dry On Mode
Dry
Wet
0.3 0.3
1
1
3
3
10
Dry 10
Wet 30
30
Seconds Delay
Wet On Mode
-
+
>2.2 mA
LED on continuously
for Intrinsically Safe approvals.
Quick Start Guide
EN 50227 / NAMUR
Low level, wet = on
Dry On Wet On
0.3 0.3
1
1
3
3
10
10
30
30
Seconds Delay
-
<1.0 mA
LED flashes each
second
+
11