User manual

TMCM-6110 Hardware Manual (V1.10 / 2012-JAN-25) 12
Copyright © 2011, TRINAMIC Motion Control GmbH & Co. KG
4.4 Power supply
For proper operation care has to be taken with regard to power supply concept and design. The board offers
2000uF / 35V electrolytic buffer capacitors and additionally about 120uF / 35V ceramic capacitors for supply
voltage filtering.
It is important that the power supply voltage (V
DRIVER
and V
DIGITAL
) is kept below the upper limit of 28V DC.
Otherwise the on-board electronics might be seriously damaged! Especially, when the selected operating
voltage is near the upper limit a regulated power supply is highly recommended.
Power
connector
V
DIGITAL
V
DRIVER
SMBJ28A
1000µF
GND
1000µF
GND
6x TMC260
(stepper driver ICs)
GND
SK36
SMBJ28A
100µF
GND
Supply of other circuits
via on-board regulators
GND
V
DIGITAL
on I/O connector 0 + 1
V
DIGITAL
on Reference switch connector 0-5
Figure 4.4: TMCM-6110 power supply concept
4.5 Communication
4.5.1 RS485
For remote control and communication with a host system the TMCM-6110 provides a two wire RS485 bus
interface. For proper operation the following items should be taken into account when setting up an RS485
network:
1. BUS STRUCTURE:
The network topology should follow a bus structure as closely as possible. That is, the connection
between each node and the bus itself should be as short as possible. Basically, it should be short
compared to the length of the bus.
c:>
node
1
node
n
- 1
node
n
Host
Slave Slave Slave
RS485
termination
resistor
(120 Ohm)
termination
resistor
(120 Ohm)
}
keep distance as
short as possible
Figure 4.5: RS485 bus structure