Pepperl+Fuchs KFD2-UT2 Series Sil Safety Manual page 23

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
RTD Input
Zone 0, 1, 2
Div. 1, 2
Figure 4.6
1. Connect RTD simulator to terminals, depending on the application:
• for 4-wire: terminals 1, 2, 5, 4 (channel I) and 7, 3, 6, 8 (channel II)
• for 3-wire: terminals 1, 5, 4 (channel I) and 7, 6, 8 (channel II)
• for 2-wire: terminals 1, 4 (channel I) and 7, 8 (channel II)
2. Connect current meter/digital multimeter (DMM) to the current output
terminals 11 and 14 (channel I) and 12 and 15 (channel II).
3. Set the RTD simulator sequentially to the temperature values
representing 4 mA, 12 mA, 20 mA and measure the output current.
4. Proof test is passed if the measured output values are within 2 % of the output
full scale. This means:
• 3.7 mA ... 4.3 mA
• 11.7 mA ... 12.3 mA
• 19.7 mA ... 20.3 mA
Additionally the loop diagnosis shall be tested to prove that the fault signalling via
the current output is working correctly. The output current in the event of a failure
depends on the device configuration. Please record this configuration and the
resulting expected fault signalling current in the test report. Example: if downscale
is configured, 2.0 mA ±1 % must be measured in the event of a failure. The red
LED must be blinking.
RTD:
Disconnect sequentially every single connection wire (2-, 4, depending on the
■
configuration). Verify that the output indicates a lead breakage.
Short circuit terminals 1 and 4 without disconnecting the wires or RTD
■
simulator. Verify that the output indicates a short circuit. For channel II apply
the short circuit between terminals 7 and 8.
1
2+
5-
4
7
3+
6-
8
Proof test set-up for HiD2082 (RTD)
HiD2082
11+
14-
12+
15-
ERR 24 V DC
mA
mA
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