
21
BLuAC5-Si Hardware Manual
920-0035E
12/10/2014
Connecting to PLC with Sourcing (PNP) Outputs
(Most PLC’s use 24 volt logic)
BLUAC
Servo
Drive
+12-24V
GND
X2-
OUT1 X2+
X1-
OUT2 X1+
PLC
with
Sourcing
Outputs
R
R
BLU Servo
Master
Encoder
GND
DIR-
DIR+
STEP-
STEP+
GND
B-
B+
A-
A+
High Speed Digital Inputs
TheBLUAC5drivesincludetwohighspeedinputscalledX1andX2.Theyaccept5volt
single-ended or differential signals, up to 2 MHz. You can connect a master encoder to the
high speed inputs for following applications.
YoucanalsouseX1andX2forotherpurposessuchastriggering,homingandbranching.If
yoursignalsare5voltlogiclevel,theycanbeconnecteddirectlytoX1andX2.For12to24
volt signal levels such as those used by many PLCs, sensors and other motion control related
devices, you must add dropping resistors to prevent damage to the BLUAC5.
•For12voltlogic,add820ohm,1/4wattresistors
•For24voltlogic,use2200ohm,1/4wattresistors
WARNING: The maximum voltage that can be applied directly to a high speed input
terminal is 5 volts. Never apply high voltage AC to an input terminal.
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