www.baldormotion.com
5-24 Backplanes
MN1928
5.3.5.2 BPL010-503 - Active low inputs
The user power supply connection USR V+ is common to all inputs. To activate an input it
must be grounded to the 0 V side of the user power supply (USR GND). The internal pull-up
resistor on the NextMove ES allows the input to be left floating when inactive or not being
used.
DIN16
GND
Mint
INX(16)
+5 V
NextMove ES
Backplane & opto-isolator card
96
pin
connector
10k
74AHCT14
2k2
TLP521-4
USR V+
User
supply
24 V
User
supply
GND
‘X6’
6
1
Figure 34 - Digital input circuit (DIN16) with ‘active low’ inputs
Status-
MicroFlex / equipment output
NEC PS2562L-1
User
supply
GND
DIN16
Backplane & opto-isolator card
96
pin
connector
2k2
TLP521-4
User
supply
24 V
‘X3’
‘X6’
USR V+
3
2
6
1
Figure 35 - Digital input - typical connections from a Baldor MicroFlex
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ,
07045-0097 • (973) 335-1007 • Toll Free: (800) 922-1103
Fax: (973) 335-1661 • www.servosystems.com
