Applied Motion STAC6-C - Manual (Page 27)

27
STAC6 Hardware manual 920-0029 Rev. C
5/2/2012
Using High Speed Inputs with 12-24 Volt Signals
Most PLCs don’t use 5 volt logic. You can connect signal levels as high as 24 volts to the STEP and DIR
inputs if you add external dropping resistors, as shown below.
For 12 volt logic, add 820 ohm, 1/4 watt resistors
For 24 volt logic, use 2200 ohm, 1/4 watt resistors
WARNING: The maximum voltage that can be applied directly to a high speed input terminal
is 24 volts. Never apply high voltage AC to an input terminal.
STAC 6
Drive
+12-24V
GND DIR-
OUT1 DIR+
STEP-
OUT2 STEP+
PLC
with
Sourcing
Outputs
R
R
Connecting to PLC with Sourcing (PNP) Outputs (Most PLC’s use 24 volt logic)
STAC6
Drive
+12-24V DIR+
DIR DIR-
STEP+
STEP STEP-
PLC
with
Sinking
Outputs
R
R
Connecting to PLC with Sinking (NPN) Outputs (Most PLC’s use 24 volt logic)