Rockwell Automation 57C421B Pulsetach Input Module/DCS 5000/AutoMax - Manual (Page 21)

3Ć7
12 14 2 15 17 3 18 20 4
+12
V
or
+5
V
GND
PULSE
ENCODER
VCC
A B Z
VCC VCC
SIGNAL
A
SIGNAL
B
SIGNAL
Z
+12
V
INPUT
+5
V
INPUT
+12
V
INPUT
+5
V
INPUT
+12
V
INPUT
+5
V
INPUT
PULSET
ACH
INPUT
MODULE
681 681 681
221 221 221
681 681 681
Figure 3.4 ĆTypical Pulsetach Connections for a SingleĆEnded Input with No
External PullĆUp Resistor