23
isoUG425_D00220_00_Q_DEEN / 04.2016
For UL applications
:
Only use 60/70°C copper lines! For UL and CSA applications, it is mandatory to
use fuses rated over 5 A to protect the supply voltage.
Wiring diagram legend
5. Error codes
If a device error occurs, the following error codes are displayed:
Terminal
Connections
A1, A2
Connection to the supply voltage via fuse (line protection). If sup-
plied from an IT system, both lines have to be protected by a fuse.
E, KE
Connect each terminal separately to PE.
The same wire cross section as for A1, A2 is to be used.
L+, L–
Connection to the DC system to be monitored
T/R
Connection to the external combined test and reset button
11, 14
Alarm relay K1 terminal
11, 24
Alarm relay K2 terminal
A, B
RS-485 communication interface with switchable termination
resistor
Error
code
Meaning
E.01
The connection between terminals E or KE and earth is interrupted
E.02
The polarity of the DC system to be monitored is false.
E.05
Measurement error/invalid calibration for the current software
version
E.08
A calibration error was detected during the device test
E.xx
Device error - Contact Bender Service
Summary of Contents for ISOMETER isoUG425
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