
TMCM-1633 Hardware Manual •Hardware Version V1.00 | Document Revision V1.01 •2021-Feb-03 9 / 22
4.1.1 Power supply requirements
The power supply should be able to deliver the required power and keep the supply voltage stable at
the desired maximum motor current. In no case should the supply voltage exceed the upper or lower
voltage limits. In order to be able to cope with high voltage spikes which might be caused by energy
fed back from the motor during deceleration a sufficient power supply capacitor should be added on the
baseboard close to the module. Depending on the motor and motor current please use a 4700uF or larger
capacitor with suitable voltage rating. Additionally, a suitable suppressor diode might be useful.
4.2 I/O, Interface and Encoder Connector
A double row 26pin header with 2.54mm pitch is used for connecting all GPIO, communication (CAN +
RS232) and encoder signals.
Pin Label Description Pin Label Description
1 +5V +5V analog reference as used
by the internal ADC. Max.
load 0.5mA
2 Velocity Analog input (0-10V), may be
used for velocity control in
stand-alone mode
3 Torque Analog input (0-10V), may be
used for torque / max. mo-
tor current control in stand-
alone mode
4 GND Supply input (power supply
and signal ground)
5 Dir_IN Digital input (+5V TTL). On-
board 10k pull-up resistor to
+5V. May be used as direction
input signal in stand-alone
mode
6 Tacho Digital output (open-drain).
May be used as tacho signal
output - e.g. toggles on each
hall sensor change
7 Stop_IN Digital input (+5V TTL). On-
board 10k pull-up resistor to
+5V. May be used as stop
input signal in stand-alone
mode
8 LED-Temp Digital output (open-drain).
Toggling with approx. 3Hz
when temperature pre-
warning is exceeded. Output
will be permanently pulled
low in case of overtempera-
ture of the driver stage
9 LED-Curlim Digital output (open-drain).
Will be pulled low in case cur-
rent limit has been reached
10 +5V +5V output (100mA max.) for
encoder and / or hall sensor
supply
11 GND Power supply and signal
ground
12 GND Power supply and signal
ground
13 Enc_A+ Encoder A channel (non-
inverting)
14 Enc_A- Encoder A channel (inverting)
15 Enc_B+ Encoder B channel (non-
inverting)
16 Enc_B- Encoder B channel (inverting)
17 Enc_N+ Encoder N+ channel (non-
inverting)
18 Enc_N- Encoder N channel (inverting)
19 CAN_L CAN bus signal (inverting) 20 RS232_RXD RS232 receive data input
21 CAN_H CAN bus signal (non-
inverting)
22 RS232_TXD RS232 transmit data output
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