24
Rev. 1.0
10/19/2018
SSDC-A Hardware Manual
400-820-9661
3.1
Digital Inputs
3.1.1 X1, X2, X3 and X4 Digital Inputs
X1, X2: Optically isolated, differential, 5-24VDC; Minimum pulse width = 250ns, Maximum pulse
frequency = 2MHz;
X3, X4: Optically isolated, differential, 5-24VDC; Minimum pulse width = 100
μ
s, Maximum pulse
frequency = 5KHz
X1 can be configured as general purpose input
X2 can be configured as general purpose input
X3 can be configured as CW limit sensor input or general purpose input
X4 can be configured as CCW limit sensor input or general purpose input
Please use
Step-Servo Quick Tuner
software to configure the function of X1, X2, X3 and X4.
The diagrams below show how to connect the X1, X2, X3 and X4 to various commonly used
devices.
5 - 24V
Power Supply
Connecting a switch or relay to an input
+
-
Switch or Relay
(Closed: logic low)
SSDC
X1/2/3/4-
X1/2/3/4+
5 - 24V
Power Supply
Connecting a NPN type output to an input
SSDC
+
-
+
-
output
NPN type
output
NPN type
output
X1/2/3/4+
X1/2/3/4-
5 - 24V
Power Supply
Connecting a PNP type output to an input
SSDC
+
-
+
-
output
X1/2/3/4+
X1/2/3/4-
