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Rockwell Automation Publication 2198-RM003A-EN-P - February 2020
Chapter 2
Replacement Considerations
Analog Inputs
This section describes analog inputs for Ultra3000 (Non-Sercos) and
Kinetix 5100 servo drives.
compares the analog inputs of these two
drives.
The Ultra3000 drive analog COMMAND input can receive a position, velocity,
or current command signal. A 14-bit A/D converter digitizes the signal. The
characteristics of this input are shown in
.
Kinetix 5100 servo drives support two analog inputs (COMMAND1 and
COMMAND2) as shown in
. The analog COMMAND1 (T-REF)
input receives a torque reference signal and the COMMAND2 (V-REF) input
receives a position or speed command signal. A 16-bit A/D converter digitizes
the signal, however, the effective resolution is 15 bit due to noise. For details see
the Kinetix 5100 Single-axis EtherNet/IP Servo Drives Users Manual,
publication
Figure 5 - Ultra3000 Analog Input Circuit
Table 23 - Analog Inputs Parameters Comparison
Parameter
Ultra3000 Drives
Kinetix 5100 Drives
Analog Inputs Resolution
14 bits
15 bits min
Analog Inputs Impedance
20 kΩ
Approx
.
12 kΩ typical
Analog Inputs Voltage
-10…+10V
-10…+10V
Analog Inputs Scan Time
0.0625 ms
0.0625 ms max
Offset Error
50 mV
50 mV max
Gain Error
1%
1% max
Propagation Delay
100 μS
100 μS max
Ultra3000 Drive
10k W
10k W
20k W
20k W
1000 μF
1000 μF
0.01 mF
C
COMMAND -
0.01 mF
10k W
10k W
