7I76 6
CONNECTORS
TB3 STEP/DIR, ENCODER AND RS-422 CONNECTOR
TB3 has a mix of signals including step/dir channel 4, an encoder interface, a RS-
422 interface, and 5V power supply terminals TB3 is a 24 terminal 3.5 MM pluggable
terminal block with supplied removable screw terminal plugs.
TB3 CONNECTOR PINOUT
TB3 PIN SIGNAL TB3 PIN SIGNAL
1 GND 13 IDX+
2 STEP4- 14 IDX-
3 STEP4+ 15 GND
4 DIR4- 16 RS-422 RX+
5 DIR4+ 17 RS-422 RX-
6 +5VP 18 RS-422 TX+
7 ENCA+ 19 RS-422 TX-
8 ENCA- 20 +5VP
9 GND 21 +5V 5V supply power
10 ENCB+ 22 +5V 5V supply power
11 ENCB- 23 GND
12 +5VP 24 GND
Note: 5VP pins are PTC short circuit protected 5V output pins for field wiring.
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