16
Rev. 1.0
0006302013
TSM24S/Q Hardware Manual
+86-400-820-9661
3.3.3 X3/X4/X5/X6 Digital Input
While the STEP and DIR inputs are designed for high-speed digital input operation, the X3/X4/
X5/X6 input are designed for low speed digital input operation between 5 and 24 volts optically
Isolated Single-ended input. They can be used with sourcing or sinking signals, 5 to 24 volts. This
allows connection to PLCs, sensors, relays and mechanical switches. Because the input circuits
are isolated, they require a source of power. If you are connecting to a PLC, you should be able
to get power from the PLC power supply. If you are using relays or mechanical switches, you will
need a 5-24 V power supply.
What is COM?
“Common” is an electronics term for an electrical connection to a common voltage. Sometimes
“common” means the same thing as “ground”, but not always. In the case of the TSM24 drives, if
you are using sourcing (PNP) input signals, then you will want to connect COM to ground (power
supply -). If you are using sinking (NPN) signals, then COM must connect to power .
Note: If current is flowing into or out of an input, the logic state of that input is low or
closed. If no current is flowing, or the input is not connected, the logic state is high or
open.
The diagrams below show how to connect X3/X4/X5/X6 input to various commonly used devices.
5-24VDC
0VDC
XCOM
X3
X4
X5
X6
User Control
Drives
5-24VDC
XCOM
X3
X4
Drives
0VDC
+
-
NPN
Sensor
5-24VDC
XCOM
X3
Drives
+
-
PNP
Sensor
0VDC
