16
Rev. 1.0
09/06/2015
MSSTB-R/C Hardware Manual
400-820-9661
3.1 Digital Inputs
3.1.1 X1,X2,X3,X4 digital input signal
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 50
μs
, maximum pulse
frequency 10KHz
X1 can be used as CW limit input or general purpose input.
X2 can be used as CCW limit input or general purpose input.
X3 can be used as motor enable input or general purpose input.
X4 can be used as alarm reset input or general purpose input.
Please use STB Con
fi
gurator software for X1,X2,X3 and X4 function con
fi
guration.
Following graphs shows some common connection methods for the inputs:
MSSTB
Drive
Switch or Relay
(closed = logic Low)
X1/2/3/4-
X1/2/3/4+
-
+
5-24
VDC
Power
Supply
MSSTB
Drive
NPN
Output
X1/2/3/4-
X1/2/3/4+
output
+
–
5-24
VDC
Power
Supply
-
+
MSSTB
Drive
PNP
Output
X1/2/3/4+
output
+
–
X1/2/3/4-
5-24
VDC
Power
Supply
-
+
Connecting the inputs to a Switch or Relay
Connecting the inputs to a NPN type output
Connecting the inputs to a PNP type output
