2 - Fagor Automation

How to install an external Ballast resistor with internal 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.
Always install it vertically
Re L+
Ballast resistor connection terminals.
Re L+
Internal
thermostat
160 °C
Tk connection terminals of
the internal thermostat.
Diagram Take either one of the two pins to + 24
V DC of the external 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
Tk
Tk
the contact.
+ 24 V DC
PLC INPUT
Take 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.
F. H8/14
Installing the external Ballast resistor with internal thermostat and with no
fan.
Installation
INSTALLATION
Connection between modules 8.
DDS
HARDWARE
Ref.1307
285