5.16
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;
fi
t a bridge between
the
“
GND
”
terminal and the
“
PE
”
connection (terminal for shield).
5.17
Accesories main swithc Zenec
Main switch for ECblue fans with "100%-function"
Type: Zenec
Part.-No. 349068
Housing protection class: IP65
0
Switches off the fan (lockable)
Auto
Controlmode
100%
Fan runs independent of the preset signal at full speed (100 %-
function)
You can
fi
nd further details in the operating instructions for the Zenec
switch.
To download, go to
www.ziehl-abegg.com
and in the Search key box
enter the type designation
“
Zenec
”
.
search key
Zenec
Assembly instructions
ECblue BASIC-MODBUS, ECblue BASIC
Electrical installation
L-BAL-F079D-GB 2044 Index 002
Part.-No.
37/80
