Baldor Nextmove ESB, Installation Manual

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Input / Output 4-5 MN1924
4.2.2 Analog outputs
The four analog outputs are available on connector X13, as shown in section 4.1.1.
H
Four independent bipolar analog outputs.
H
Output range: ±10VDC (±0.1%).
H
Resolution: 12-bit (accuracy ±4.9mV).
H
Output current: 10mA maximum.
H
Update frequency: 10kHz maximum (adjustable using the
LOOPTIME
keyword, factory
default 1kHz).
MintMT and the Mint Motion Library use analog outputs Demand0 to Demand2 to control servo
axes 0 to 2 respectively. The Demand3 output may be used as general purpose analog
output. See the
DAC keyword in the MintMT help file.
The analog outputs may be used to drive loads of 1k Ω or greater. Shielded twisted pair cable
should be used. The shield connection should be made at one end only.
NextMove ESB
Demand0
Demand
±100%
120k
30k
-
+
AGND
100pF
TL084
47R
1
2
+12V
-12V
‘X13’
Figure 5 - Analog output - Demand0 shown
NextMove ESB
Demand0
AGND
1
2
13
12
MicroFlex / servo amplifier
AIN0+
AIN0-
Connect overall shield at
one end only
3 Shield
Servo
amplifier
±10VDC
demand
input
-
+
‘X3’ ‘X13’
Figure 6 - Analog output - typical connection to a Baldor MicroFlex