User Manual

TMCM-1180 and PD86-1180 Hardware Manual (V1.05 / 2013-JUL-26) 17
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4.3.7 Encoder Connector
A 2mm pitch 5 pin connector is used for connecting the Encoder.
Mating connector housing: PHR-5
Mating connector contacts: SPH-002T-P0.5S
1 5
Pin
Label
Description
1
ENC_A
Encoder A-channel
2
ENC_B
Encoder B-channel
3
ENC_N
Encoder N-channel
4
GND
Power and signal ground
5
+5V_output
+5V output for encoder power supply (max. 100mA)
Table 4.7 Encoder connector
100pF
GND GND
2k2
2k2
2k2
0.1A
2k2 2k2 2k2
+5V
+5V +5V +5V
GND
GND GND
1
1
1
1
1
ENC_A
ENC_B
ENC_N
Figure 4.13 Internal circuit of encoder interface
Keep the electronics free of (metal) particles! The encoder uses a magnet at the end of the
motor axis in order to monitor position. The magnet naturally attracts especially tiny
metal particles. These particles might be held on the top side of the PCB and even worse
– start moving in accordance with the rotating magnetic field as soon as the motor starts
moving. This might lead to shorts of electronic contacts / wires on the board and totally
erratic behavior of the module! Use compressed air for cleaning the module if necessary.