User Manual

TMCM-1311 V1.2 Hardware Manual (Rev. 1.12 / 2013-JUL-05) 9
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3.2.3 Encoder Connector
A dedicated encoder input connector is available. Connector type is JST PH series 8pin with 2mm pitch.
The following encoders are supported in incremental A/B/N interface configuration:
- encoders with incremental differential (RS422) output signals with or without zero/index channel
- encoders with incremental single ended (TTL or open collector) output signals with or without
zero/index channel
8
1
Pin
Label
Direction
Description
1
GND
Power (GND)
Signal and system ground
2
+5V
Power
(supply output)
+5V output for external circuit
3
A+
Input
Encoder channel A+ input
(differential, non-inverting)
4
A-
Input
Encoder channel A- input
(differential, inverting)
5
B+
Input
Encoder channel B+ input
(differential, non-inverting)
6
B-
Input
Encoder channel B- input
(differential, inverting)
7
N+
Input
Encoder zero / index channel input
(differential, non-inverting)
8
N-
Input
Encoder zero / index channel input
(differential, inverting)
Table 3.3 Encoder connector (configuration for encoders with incremental A/B/N output)
For encoders with +5V supply the required +5V output is also available via this connector (max. 100mA
per connector).
3.2.3.1.1 Differential A/B/N Encoder Signals
For differential encoder signals connect all differential signals (A+ and A-, B+ and B- and optional N+ and
N-) to the respective connector input pins. Usually on-board line termination should be also installed for
differential signals. Therefore, close all three jumpers for the 120R line termination of the respective
differential encoder input.
Place jumpers for
proper temrination
Figure 3.3 Encoder input termination
3.2.3.1.2 Single Ended A/B/N Encoder Signals
For single ended encoders (TTL or open collector signals) connect the encoder signals A, B and optional
N to the positive / non-inverting differential inputs of the encoder connector A+ / B+ / N+.
NECESSARY CONNECTIONS
Encoder sign.
Encoder connector
Pin
Label
Description
A
3
A+
Encoder channel A+ input (differential, non-inverting)
B
5
B+
Encoder channel B+ input (differential, non-inverting)
N/I (optional)
7
N+
Encoder zero / index channel input (differential, non-inverting)
Table 3.4 How to connect single ended encoders
The pins A-, B-, and N- of the encoder connector may be left unconnected.
Please refer to the encoder manufacturer data
sheet for the correct interface settings.