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5.11
USB-interface
Over the USB interface if necessary a software update can be made. For this a consultation with our
V-STE support department for control systems-ventilation technology is necessary.
For communication with a PC (Virtual COM Port) we make the necessary programs available on
request.
Danger due to electric current
Plug the jumper J1
to both PINs only for a software update via USB interface. The device will not
switch on if this jumper is plugged to both PINs!
Do not replug the jumper under voltage, observe the safety instructions!
5.12
Potential at control voltage connections
The control voltage connections (< 30 V) relate to the joint GND potential (Exception: relay contacts
are potential-free).
CXE/AV(E) 1~ 230 V, 2 ~ 400 V
There is a potential separation between the control voltage connections and the earthed conductor. It
must be ensured that the maximum external voltage at the control voltage connections cannot exceed
30 V (between
“
GND
”
terminals and
“
PE
”
earthed conductor). If necessary, a connection to the
earthed conductor potential can be established, install bridge between
“
GND
”
- terminal and the
“
PE
”
connection.
CXG-24AV(E)
In low voltage versions (24 V DC) there is
no potential separation
between supply voltage and
connections of the control voltage.
Operating Instructions
UNIcon MODBUS Master
Electrical installation
L-BAL-E255-GB 1901 Index 001
Part.-No.
16/121