56
1.43
Katherm HK
Ready-to-install trench heaters with EC tangential fan
Assembly and installation instructions
The bus cables between the CAN-bus cards must be linear.
Disconnect the unit before adjusting the terminal resistors.
A terminal resistor must be connected between terminals "+" and "-”
on the first and last CANbus card in a bus line.
Resistance of terminal resistor: 120 Ohm.
Bus communication between the units with CAN bus cards is solely via
the CAN bus.
The tLAN bus communication between the units used in single-circuit
controls is not connected.
Refer to the technical data sheet for the CANbus cards for the
connection conditions for the CANbus cards.
A flush-mounted back box is required for the KaController.
Connect the KaController to the nearest KaControl as per the wiring
diagram. The maximum bus length between the KaController and the
KaControl unit is 30 m.
Connecting a KaController to it automatically converts the respective
KaControl into the master unit in the control circuit.
18.2 Terminal resistors in a CAN-bus system
18.3 Bus connections between the units
18.4 KaController
** Lay shielded, paired
cables, e.g. UNITRONIC®
BUS LD 2x2x0.22 or of
the same value, separate-
ly from power cables!
Mains power
230V/50 Hz
Mains power
230V/50 Hz
3
2**
3**
2**
3
Master
unit
#1
Flush-mounted back box
Slave unit
#2
Bus connection 30 m
Maximum length
Summary of Contents for Katherm HK Series
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