User Manual

TMCM-1160 V1.01 Hardware Manual (Rev. 1.02 / 2013-JUL-23) 9
www.trinamic.com
Do not connect or disconnect motor during operation!
Motor cable and motor inductivity might lead to voltage spikes when the motor is
disconnected / connected while energized. These voltage spikes might exceed voltage
limits of the driver MOSFETs and might permanently damage them. Therefore, always
disconnect power supply before connecting / disconnecting the motor.
Keep the power supply voltage below the upper limit of 51V!
Otherwise the driver electronics will seriously be damaged! Especially, when the selected
operating voltage is near the upper limit a regulated power supply is highly
recommended. Please see also chapter 7 (operating values).
There is no reverse polarity protection!
The module will short any reversed supply voltage due to internal diodes of the driver
transistors.
3.2.2 Serial Communication Connector
The module supports RS485 and CAN communication via this connector.
CAN interface will be de-activated in case USB is connected due to internal sharing of hardware
resources.
A 2mm pitch 5-pin JST B5B-PH-K connector is used for serial communication.
1
5
Pin
Label
Description
1
CAN_H
CAN bus signal (dominant high)
2
CAN_L
CAN bus signal (dominant low)
3
GND
Module ground (system and signal ground)
4
RS485+
RS485 bus signal (non inverted)
5
RS485-
RS485 bus signal (inverted)
Table 3.3 Connector for serial communication
3.2.2.1 RS485
For remote control and communication with a host system the TMCM-1160 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 6.4 Bus structure
2. BUS TERMINATION:
Especially for longer busses and/or multiple nodes connected to the bus and/or high
communication speeds, the bus should be properly terminated at both ends. The TMCM-1160
does offer on-board termination resistors which can be activated with the help of a jumper. The
jumper has to be removed for units not connected to one end of the bus!