Usb-Interface; Potential At Control Voltage Connections - Helios FU Comfort Sinus Manuel De Montage Et D'utilisation

Installation and Operating Specification FU Comfort Sinus
Information
•
Except the data link "A (D+)", "B (D-)" the "ID1 - ID2" and the "GND" connection may no further cable
cores of the data line be used.
•
The connections for the automatic addressing "ID1" and "ID2" are not directly connected with each
other. These may not be bridged; any order of connection is possible.
•
When using the automatic addressing, no repeaters can be used because these do not pass the
signal through to the addressing.
•
If a repeater is necessary and automatic addressing should be carried out, only the repeater of the
Z-G-1NE type can be used, only it can relay the addressing signal.
5.14

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!
5.15

Potential at control voltage connections

The connections for the control voltage (< 30 V) relate to the common GND potential (exception: relay
contacts are potential-free). There is a potential isolation between the connections for the control
voltage and the PE conductor. It must be ensured that the maximum external voltage at the con-
nections for the control voltage cannot exceed 30 V (between the "GND" and "PE" conductor
terminals). A connection to the PE conductor potential can be made if required; fit a bridge between
the "GND" terminal and the "PE" connection (terminal for shield).
L-BAL-E304-GB 2004 Part.-No.
21/139
Electrical installation