iso415R-x_D00401_00_M_XXEN / 04.2021 17
ISOMETER® iso415R
4.1.2 ALARM LEDs
Display of prewarning AL1 and main alarm AL2.
4.1.3 VALUE DISPLAY LEDs
Measured value display insulation resistance in kΩ
4.1.4 Detent potentiometer response value prewarning
R
an1
The response value R
an1
can be set manually to the
scaled values with the detent potentiometer and
read from the Modbus register "Response value
R
an1
".
Changing the response value in the Modbus regis-
ter "Response value Ran1" is only possible in
switch position "Ext".
The last response value R
an1
stored via the inter-
face can be read from the Modbus register
"Response value Ran1_ext". It is applied to the re-
sponse value R
an1
when the setting is changed
from a manual value to "Ext".
iso415R
T / R
Ran2 (k
Ω
)
Ext 700 400 200
100
70
40
20
10
5
Ran1 (k
Ω
)
Ext 1k 700 400
200
100
70
40
20
10
1k
100
10
1
k
Ω
2
AL
1
ON
AC/DC
k
Ω
L1
L2
E
L1´
L2´
KE
11
12
14
B
A
-
+
LED
Operating state
AL1
PREWARNING
Lights permanently when the value falls below the prewarning
threshold R
an1
.
AL2
MAIN ALARM
Lights permanently when the value falls below the main alarm
threshold R
an2
.
iso415R
T / R
Ran2 (k
Ω
)
Ext 700 400 200
100
70
40
20
10
5
Ran1 (k
Ω
)
Ext 1k 700 400
200
100
70
40
20
10
1k
100
10
1
k
Ω
2
AL
1
ON
AC/DC
k
Ω
L1
L2
E
L1´
L2´
KE
11
12
14
B
A
-
+
LED
Operating state
1
Lights permanently
when the current measured value is
≤
1 k
Ω
.
10
•
Lights permanently
when the current measured value is
≤
10
k
Ω
.
•
Flashes synchronously with the yellow status LED
when the
system leakage capacitance C
e
has been exceeded.
100
•
Lights permanently
when the current measured value is
≤
100 k
Ω
.
•
Flashes synchronously with the yellow status LED
when there is
a connection fault of the system (L1/L2).
1k
•
Lights permanently
when the current measured value is
≤
1
M
Ω
.(1k = 1000 k
Ω = 1 MΩ)
•
Flashes synchronously with the yellow status LED
when there is
a connection fault to earth (E, KE).
iso415R
T / R
Ran2 (k
Ω
)
Ext 700 400 200
100
70
40
20
10
5
Ran1 (k
Ω
)
Ext 1k 700 400
200
100
70
40
20
10
1k
100
10
1
k
Ω
2
AL
1
ON
AC/DC
k
Ω
L1
L2
E
L1´
L2´
KE
11
12
14
B
A
-
+
