www.baldormotion.com
5-32 Backplanes
MN1928
5.3.10 Stepper axes outputs 4-5 (NES002-503 only)
Location
X5
Mating connector: Weidmüller Omnimate BL 3.5/5
Pin Name
Description
NextMove ES
96-pin
connector
5 DGND
Digital ground
a3
4 DOUT11
Direction output 5
c22
3 DOUT10
Step (pulse) output 5
c16
2 DOUT9
Direction output 4
b13
1 DOUT8
Step (pulse) output 4
a13
Stepper axes outputs 4-5 on the backplane are
not
buffered by the opto-isolator
card; they are connected directly to the NextMove ES outputs.
When an output is activated, it is grounded through the ULN2003, which can sink up to 50 mA
per output (all outputs on, 100% duty cycle). If an output is used to drive a relay, a suitably
rated diode must be fitted across the relay coil, observing the correct polarity. This is to protect
the output from the back-EMF generated by the relay coil when it is de-energized.
STEP4
NextMove ES
ULN2003
Mint
STEP4
74AHCT244
DGND
GND
User
supply
24 V
User
supply
GND
Backplane
1
96
pin
connector
‘X5’
5
Output Load
Figure 44 - Stepper output - STEP4 shown
1
5
CAUTION
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
