Baldor VS1GV21-1B, Installation & Operating Manual, Page: 30 / 204

4-14 Power Wiring MN765
4.14 Home (Orient) Switch Input
The Home or Orient function causes the motor shaft to rotate to a predefined home position {Home + Offset} (where
offset can be a “+” or “-” value). The homing function allows shaft rotation in the drive forward direction only until the
rising edge of the signal edge at terminal J2-6 of the encoder daughter board. The home position is located when a
machine mounted switch or the encoder C “Index” pulse is activated (closed). Home switch position is defined by a rising
signal edge at terminal J2-6 of the encoder daughter board. The shaft will continue to rotate in either direction to the user
defined offset value. The offset is programmed in the Level 2 Miscellaneous Homing Offset parameter (P#2308). The speed
at which the motor will “Home” or orient is set with the Level 2 Miscellaneous Homing Speed parameter (P#2307).
A machine mounted switch may be used to define the Home position in place of the encoder index channel. A differential
line driver output from a solid state switch is preferred for best noise immunity. Connect this differential output to terminals
J2-6 and J2-7.
A single ended solid-state switch should be wired as shown in Figure 4-13. Regardless of the type of switch used, clean
rising and falling edges at J2-6 are required for accurate positioning.
NOTE: A control may require dynamic brake hardware for Orient (Homing) function to work. The control may trip without
dynamic brake hardware installed.
Figure 4-13 Typical Home or Orient Switch Connections (Encoder Board)
6
7
8
9 Common
+5V
C
C+
J2
6
7
8
9 Common
+5V
C
C+
J2
Limit Switch (Closed at HOME)
5VDC Proximity Switch
+5V Input
Output
Common
See recommended tightening torques in Table A-2.