IRIS IRMA MATRIX 2 Installation Manual page 33

33/74 IRMA MATRIX R2 CAN Installation manual
released
If cables in direct proximity to H couplers are tied up, ensure that the connections are not
bent. There is the risk of the connectors becoming wedged which will result in interruption
of the contact and destruction of the plug-in connection in operation.
Therefore the tightening of e.g. a cable clip is permitted only on the solid base body of the
H coupler or at a distance of approx. 15 cm from the plug-in connectors.
Generally the beginning and the end of the maximum IRMA CAN BUS must be fitted with a
resistor (terminator). For this purpose use a termination cable and a termination connector.
Their functionality is identical.
Rev. 1.6 2018-09
• The termination connector (m) of the CAN type is connected to the open end of
the last coupler if the power supply and the IRMA gateway are located at the
beginning of the CAN BUS (see e.g. Fig. 44, p. 69).
• In the event of the installation of the IRMA gateway in the middle of the line, the
termination connector is connected to the last H coupler (see e.g. Fig. 45, p. 70).
• The termination cable K-A21-M12CAN-TRoP-XX-32cm is installed between the
IRMA gateway and the M12 cable system of the CAN type if the power supply and
the IRMA gateway are located at the beginning of the installation (see e.g. Fig. 44,
p. 69).