Motor Power Company DUET_FL 48/10, Руководство пользователя

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Page 182
The servo positioning controller is connected to the 48 V intermediate circuit (DC bus) supply and to
the 24 V logic supply. A shared reference potential (GND) is used. A central star point near the power
supply units for all GND connections reduces the "ground bouncing" effects between the controllers.
The motor has to be connected through the FASTONs [X301] to [X303] on the circuit board of the
DUET_FL.
The DUET_FL controls an optional holding brake through connector [X3]. The encoder and the
temperature sensor have to be connected through the recessed connector [X2] on the circuit board.
The DUET_FL-48/10 FB has an additional integrated brake chopper. It is therefore possible to connect
the braking resistor through the FASTONs [X304] and [X305] on the circuit board as shown below right
in Figure 43: Connection to power supply, control and motor
. Normally, the braking resistor is installed
on the mounting plate for the electronics housing.
If the analog inputs are used to assign setpoints, we recommend using shielded and twisted cables
for AINx / #AINx, even if the control does not provide any differential signal. Connection of #AINx to the
0V reference potential at the control system prevents common-mode interferences which are caused
by high currents flowing through the power stage and the external cables. The shield prevents the
penetration of interferences and should be connected on both ends (to the housing of the DUET_FL
servo positioning controller and to the housing of the control system).
The CAN bus should be cabled in the same way as the analog inputs. A terminating resistor of 120
Ω
/
1% has to be installed at both ends of the CAN bus network. The individual nodes of the network are
always connected in line so that the CAN cable is looped through from controller to controller.
In the case of the DUET_FL 48/10 and DUET_FL 48/10 IC (above right in the picture), it may be
necessary to connect two cables to one pin of connector [X1]. This is not necessary in the case of the
DUET_FL 48/10 FB (below right) since there are already two connectors, [X401] and [X402], for the
CAN bus.
The DUET_FL 48/10 FB has a separate connector, [X5], for the serial service interface. On all the
other DUET_FL variants, it is connected through [X1].
The signals for the digital IOs DINx and DOUTx do not need a shield to protect them against
interferences, but a shielded cable between the DUET_FL servo positioning controller and the control
system improves the EMC behaviour through out the entire system and particularly in view of radiated
interferences. At least the control signals DIN9 (controller enable) and DOUT0 (ready for operation)
have to be connected between the SPC and the controller.
Make sure that the DUET_FL servo positioning controller is completely connected prior to switching on
the power supply for the intermediate circuit (DC bus) and the logic system. If the power supply
connections are reversed, if the power supply is too high or if the connections of the intermediate
supply and the logic supply are mixed up, the DUET_FL servo positioning controller may be
permanently damaged.
User Manual DUET_FL „DUET_FL 48/10“ Version 1.1 Motor Power Company