Bender ISOMETER isoNAV685-D, Руководство пользователя

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Settings Settings
isoNAV685-D_D00215_02_M_XXEN/04.2017
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10.1 (1.9.6) Analogue
The following parameters can be set for the analogue output:
10.1 (1.9.6.1) Mode
The following values can be set for the operating mode of the analogue output
10.1 (1.9.6.2) Midscale
Select the appropriate midscale. The following parameters can be set:
Current output
•0-20 mA
Permissible load ≤ 600 Ω
•4-20 mA
Permissible load ≤ 600 Ω
•0-400 μA
Permissible load ≤ 4 kΩ
Voltage output
•0-10 V
Permissible load ≥ 1 kΩ
•2-10 V
Permissible load ≥ 1 kΩ
•Linear
The switching signal is linear to the insulation resistance in the indi-
cated measuring range.
•28 kΩ
•120 kΩ
The switching signal is analogue to the mid scale of 28 kΩ or 120 kΩ
on a measuring instrument.
M
+
X1 X1
A
M
+
X1 X1
V
10 kΩ 1 MΩ
I/U 20 mA / 400 µA
10 V
0 mA / 4 mA
0 V / 2 V
1 k
1 M
100
10
0 k
Ω
28 kΩ
120 kΩ
100 Ω 1 MΩ
I/U 20 mA / 400 µA
10 V
0 mA / 4 mA
0 V / 2 V
120 kΩ 28 kΩ
Calculation of the insulation resistance using the analogue output:
10.1 (1.9.6.3) TEST
The functional test of the analogue output can be activated or deactivated. In this way,
the analogue output is adjusted once for the entire range. This only applies to the manual
test and not to the cyclic device self test:
10.1 (1.9.6.4) Function
Select the appropriate setting for the analogue output. The following parameters can be
set.
Lower value
Analogue output A
1
0 mA
4 mA
0 µA
0 V
2 V
Upper value
Analogue output A
2
20 mA
20 mA
400 µA
10 V
10 V
•on
The manual test checks the analogue output function.
•off
The manual test does not check the analogue output function.
•Insulation value
Depending on the measured insulation value, an analogue current
or voltage signal is provided at the output.
•DC offset
Depending on the measured DC offset, an analogue current or volt-
age signal is provided at the output. This setting can only be used
when
Linear
is selected in the menu "Midscale".
R
F
= (A
2
- A
1
) * R
SKM
- R
SKM
A
3
- A
1
R
SKM
= 28 kΩ or 120 kΩ/midscale
A
3
= Measured value analogue output
R
F
= Insulation fault in kΩ
DC+ alarm
Symmetrical alarm
DC- alarm
0 %
25 %
50 % 75 % 100 %
0 V/2 V
0 mA/4 mA
0 µA
10 V
20 mA
400 µA