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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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