Stepper Control Outputs - Models Nxe100-16Xxdx - Baldor NXE100-1608Dx Installation Manual

4.3.3 Stepper control outputs - models NXE100-16xxDx

The stepper control outputs are available on connectors X2 and X3, as shown in section 4.1.1.
There are four sets of stepper motor control outputs, operating in the range 60 Hz to 5 MHz. Each
of the step (pulse) and direction signals from the NextMove e100 is driven by DS26LS31 line
drivers, providing RS422 differential outputs. It is recommended to use separate shielded cables
for the step outputs. The shield should be connected at one end only.
The STEPPERDELAY keyword allows a 0 - 4.25 μs delay to be introduced between state
changes of the step and direction outputs. The FREQ keyword can be used to directly control the
output frequency, between 60 Hz and 5 MHz. Values less than 60 Hz will produce no output - see
the Mint help file.
The DS26LS31 drivers are static sensitive devices. Take appropriate ESD
precautions when handling the NextMove e100. When connecting the outputs to
single ended inputs as shown in Figures 17 and 18, do not connect the STEPx- or
NOTICE
DIRx- outputs to ground; leave them unconnected.
NextMove e100
Step
Output
Dir
Output
GND
Figure 17 - Stepper output - typical connection to a Baldor MicroFlex
NextMove e100
Step
Output
Dir
Output
GND
Figure 18 - Stepper output - typical connection to a Baldor FlexDrive
MN1941
DS26LS31
STEP0+
STEP0-
DS26LS31
DIR0+
DIR0-
DGND
Shield
DS26LS31
STEP0+
STEP0-
DS26LS31
DIR0+
DIR0-
DGND
Shield
Flex+Drive
'X2'
3
Twisted pairs
5
1
6
Connect shields at
one end only
'X2'
3
Twisted pairs
5
1
6
Connect shields at
one end only
II II
or MintDrive
www.baldormotion.com
'X3'
MicroFlex / servo amplifier
10 Step
11 DGND
9
Dir
II
'X9'
FlexDrive / servo amplifier
1 Pulse+
Pulse
6
GND
2
Dir+
Dir
7
GND
II
,
Input / Output 4-13