Analog Inputs - Allen-Bradley Ultra1500 2092-DA1 User Manual

2-10 Ultra1500 Connector Data
Publication 2092-UM001D-EN-P — July 2005

Analog Inputs

The Ultra1500 has two single-ended analog inputs. One is dedicated as the
command input for Analog Velocity mode, and the second is dedicated as the
command input for Analog Current mode. The two inputs are identical, and
Figure 2.6 shows the configuration of the analog input.
Figure 2.6
Analog Input Configuration
Ultra1500 Drive
+12V
4.7 kΩ 4.7 kΩ
VCMD+
VCMD-
Logic Ground
The following table provides a description of the analog input specifications.
Parameter Description
VCMD
Resolution
Number of states that the input signal is divided into
(to the number of bits)
[which is 2
ICMD
Resolution
Input Open circuit impedance measured between the
Impedance positive (+) input and analog common.
Input Signal
Voltage applied to the input
Range
-12V
4.7 kΩ
-
+
TL072
0.01 µF
4.7 kΩ
].
Minimum Maximum
16 bits —
12 bits —
19 kΩ —
-10V +10V