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4.3.2 CREF and digital inputs
Pin 7 (CREF) controls the sense of all the digital inputs (X3 pins 9 to 17) and should be
permanently wired, dependent on the user requirements:
Active high: connect 0V to pin 7.
The digital inputs will be active when a voltage of +24VDC (greater than 12VDC) is applied to
them and will sink a current of approximately 5mA each.
Active low: connect +24VDC to pin7.
The digital inputs will be active when grounded (less than 2V) and will source a current of
approximately 5mA each.
The +24VDC supply is from a customer supplied 24VDC supply that should have a continuous
current capability of 1.75A.
The sense of the inputs can be configured in Mint WorkBench or controlled individually in Mint
using the keyword INPUTACTIVELEVEL.
See section 3.8 for more information about Drive Enable.
4.3.3 Special functions on DIN4 and DIN5 - pulse and direction inputs
DIN4 and DIN5 can be configured using the MASTERSOURCE keyword to behave as pulse
and direction inputs:
DIN4 is used as the pulse input. The pulse frequency controls the speed of the motor.
H
DIN5 is used as the direction input. The state of the direction input controls the direction of
H
motion. A positive voltage will result in forward motion. If DIN5 is grounded, movement will
be in the opposite direction.
Note: If DIN4 and DIN5 have been configured as pulse and direction inputs, the
alternative pulse and direction inputs, available on connector X9, cannot be used.
See the Mint keyword MASTERSOURCE.
FlexDrive
'X3'
14
DIN4
CREF
7
Active high:
Figure 28 - X3 pulse and direction / fast digital input circuit
4-6 Input / Output
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
II
4k7
33pF
DINx=+24VDC (±20%)
CREF=0V
1k
HCPL2231
DGND
Active low:
DINx=0V
CREF=+24VDC (±20%)
www.baldormotion.com
Vcc
10k
to CPU
MN1902
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