Functional Safety HiC2027**, KCD2-STC-(Ex)1.2O.**
Operation
20
17-
03
19
Proof Test Procedure
1. Put out of service the entire safety loop. Protect the application by means of
other measures.
2. Prepare a test set-up, see figures below.
3. Test the devices. Verify the current values as given in table below.
4. Set back the device to the original settings for the application after the test.
Figure 5.1
Proof test set-up for HiC2027**
Step
No.
Input value (mA)
Configuration
Current source/current sink
(mA)
Voltage source (V)
1
20.0
20.0
±
0.4
5.0
±
0.1
2
12.0
12.0
±
0.4
3.0
±
0.1
3
4.0
4.0
±
0.4
1.0
±
0.1
4
23.0
23.0
±
0.4
5.75
±
0.1
5
0
< 0.2
< 0.1
Table 5.1
Steps to be performed for the proof test
HiC2027
+
-
+
-
10a
9a
SL1
8a
7a
1a
1b
SL2
5a
5b
1a, 1b
2a, 2b
-
+
Termination Board
2
5
1
4
12
15
11
14
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
I
II
-
+
-
+
Multimeter
(mA/V)
Multimeter
(mA/V)
Signal calibration
4 mA to 20 mA
I
supply
24 V DC
Power
supply
Tip
The easiest way to test HiC devices is by using a stand-alone HiCTB**-SCT-***-
**-** termination board. In this test, it is not necessary to disconnect the wiring of
the existing application. Faults in a subsequent wiring can be avoided.
