Bender ISOMETER isoNAV685-D, Руководство пользователя

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Function Function
isoNAV685-D_D00215_02_M_XXEN/04.2017
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If the resistance value falls below a set response value
R
an
, the associated alarm relay
turns off, the LED ALARM 1 lights and the LCD shows the measured value. The error mes-
sage is saved. Pressing the RESET button resets the insulation fault message, provided
that the insulation resistance is at least 25 % above the preset response value. As
additional Information, the quality of the measuring signal and the time required to up-
date the measured value are shown on the display. A poor signal quality (1-2 bars) may
be an indication that the wrong measurement profile has been selected.
3.4 Interfaces
• Communication protocol Modbus TCP
• BCOM for Bender device communication via Ethernet
• Integrated web server for reading out measured values and for parameter setting
3.5 Self test
After switching on the supply voltage, the ISOMETER® automatically and continuously
checks all internal measuring functions, the components of the process control such as
the data and parameter memory, as well as the connections to the IT system and earth.
The self test can also be activated manually by means of the test button to check the func-
tions of the relays (depending on the configuration) or it can be selected via the "Control"
menu (refer to
“Control” on page 34 ).
The progress of the manual self test is shown on the LC display by a bar graph. Depending
on the conditions in the IT system being monitored, the self test is completed after
15…20 seconds. The device then returns to the standard mode (measurement mode)
and the actual measured value will be displayed after the measuring time has expired.
The display shows the message
Initial measurement
until the first valid value is meas-
ured (refer to “Initial measurement” on page 26 ).
If a fault is detected during the self test, the respective LEDs of the device light (refer to
“Alarm messages” on page 45 ). In addition, the respective message will be indicated on
the display and a previously programmed output will provide the respective signal.
The test has been run and the result was positive.
The test has been run and the result was negative.
The test is not available and is not carried out
(e.g. due to specific device settings).
The test is running.
TEST
√ Measurement
Coupling
Earth connection
Outputs
33 %
√