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4-6 Input / Output
MN1901
4.2.3 Analog outputs, bipolar - X4
Location
Connector X4
Pins
4
5
Name
AOUT0
AOUT1
Mint keyword
AUXDAC.0
AUXDAC.1
Description
Two independent assignable outputs.
Output range: ±10VDC.
Resolution: 8-bit with sign (accuracy ±78mV).
Output current: 1mA maximum.
Update interval:
Immediate - Software (Mint programs)
1ms, 2ms - DAC monitoring
The two programmable analog outputs can be used to provide the status of various control
conditions. DAC monitoring is the process where the value of a selected parameter can be
monitored by the MintDrive
II
, and the analog output used to produce a voltage proportional to
the value. DAC monitoring can be controlled by various Mint keywords. These begin with the
letters
DACMONITOR
..., for example
DACMONITORMODE
. The update interval for DAC
monitoring is affected by the Mint
LOOPTIME
keyword. See the Mint help file for details.
10k
LF412
AGND
MintDrive
II
68.1k
75k
-15V
+15V
300k
-
+
300k
0.47nF
Internal
2.5V
reference
AGND
PWM
signal
AOUT0
AGND
4
6
‘X4’
Figure 30 - X4 analog output circuit - AOUT0 shown
Note:
When power is applied to the MintDrive
II
, or during firmware download, the analog
outputs may swing to +2V for a period of about 0.25s, before settling at 0V.
4
5
6
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