Operating Instructions
Zero-3 / 5-Channel Motor Controller
CNC-STEP e.K. ▪ Siemensstrasse 13-15 ▪ 47608 Geldern ▪ Germany
Page 15
Support: +49 (0)2831/91021-50
12.10.2012
4 .3 . 1
Motor connectors (X1, X2, Y, Z)
Pin no. Signal
1+6
Motor winding A+
2+7
Motor winding A-
3+8
Motor winding B+
4+9
Motor winding B-
5
Ground, shield
For motors with 3A or higher current a wire gauge of at least 0.5mm² (AWG 20) must be used and
both pins must always be connected for each wire. For motors with lower current, 0.34mm² and one
pin are sufficient. Shielding can be connected to either pin 5 or the sheet metal collar of the
connector. The motor outputs are short-circuit proof (interturn fault and short circuit).
4 .3 . 2
Control signals (ST)
The limiting switch and the E-stop switch are connected at this connector. All switches connect
ground with the respective input. The E-stop switch must be NC (normally closed). The limit switch
can be an NC or NO (normally open) contact switched to ground. The polarity can be selected in
the software (e.g. WinPCNC or Mach3).
Pin no. Signal
1
Limit switch C or tool probe
2
Limit switch X
3
Limit switch Y
4
Limit switch Z
5
E-stop switch (closed = OK, open = stop)
6
Unused (optional 12V sensor provision)
7
Optional brake +24V
8
Optional brake for ground
9
Ground, shield
