Galil DMC-2X00 - Manual (Page 52)

INCO
M
IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8
ABOR
T
LSCOM
FLSA RLSA HOMEA FLSB RLSB HOMEB
Additional Limit
Switches(Dependent on
Number of Axes)
(ALATCH) (BLATCH) (CLATCH) (DLATCH)
Figure 3-1. The Optoisolated Inputs.
NOTE: Controllers with 5 or more axes have IN[9] through IN[16] also connected to INCOM.
Using an Isolated Power Supply
To take full advantage of opto-isolation, an isolated power supply should be connected to the input
common. When using an isolated power supply, do not connect the ground of the isolated power to the
ground of the controller. A power supply in the voltage range between 5 to 24 volts may be applied
directly (see Figure 3-2). For voltages greater than 24 volts, a resistor, R, is needed in series with the
input such that
1 mA < V supply/(R + 2.2K
Ω
) < 11 mA
42
• Chapter 3 Connecting Hardware
DMC-2X00