Installation
8.
Ref.1912
· 281 ·
DDS
HARDWARE
How to install AN external Ballast resistor with an external
thermostat and with no fan
WARNING. On top of the ER+TH modules, the air temperature can reach
values over 120°C/248°F. Therefore, the resistor should be mounted away
from the rest of the modules or even outside the electrical cabinet, always
vertically and away from cables and other temperature sensitive material.
F. H8/15
Installing AN external Ballast RESISTOR with external thermostat and with
no fan.
Ballast resistor connection
terminals.
Always install it vertically
Re L+
Diagram
Connect either one of the two pins to
+ 24 V DC
of the exter-
nal power supply of the electrical cabinet and the other one
to a
PLC input
.
Important
. Remember to manage the chosen PLC input in the
PLC program to generate an error when exceeding the limit
temperature (160 °C) detected by the sensor and to open the
Connect the Ballast resistor terminals to the Re and L+ terminals of the
terminal strip of the Ballast of the power supply or compact drive accordingly.
External thermostat
Element to connect with the
external thermostat
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