Rockwell Automation Publication 2198-UM002E-EN-P - February 2018
323
Size Multi-axis Shared-bus Configurations
Appendix C
System Sizing Example
This example shows how a single Kinetix 5700 drive cluster meets the total bus
capacitance, power cable length, and 24V DC current limitations.
Figure 155 - Example DC-bus Group (single drive cluster)
Table 150 - System Sizing Example Data
For more information on motor and motor-brake specifications, refer to the
Kinetix Rotary Motion Specifications Technical Data, publication
.
MOD
NET
MOD
NET
MOD
NET
MOD
NET
2
1
1
4
I/O
I/O
2
1
2
1
2
1
1
I/O-A
6
5
10
1
I/O-B
6
5
10
1
I/O-A
6 1
I/O-B
6
5
10 5
10
UFB
UFB-A
UFB-B
UFB-A
UFB-B
D+
D-
D+
D-
D+
D-
MF-A
MF-B
MF-A
MF-B
D+
D-
MBRK
+
-
1
6
5
10
D+
D-
MF
MOD
NET
2
1
I/O
1
6
5
10
UFB
D+
D-
MF
MBRK
+
-
MOD
NET
MOD
NET
2
1
2
1
1
I/O-A
6
5
10
1
I/O-B
6
5
10
1
I/O-A
6 1
I/O-B
6
5
10 5
10
UFB-A
UFB-B
UFB-A
UFB-B
D+
D-
D+
D-
D+
D-
MF-A
MF-B
MF-A
MF-B
D+
D-
2198-D006-ERS
x
Dual-axis Inverters
2198-D020-ERS
x
Dual-axis Inverters
2198-S086-ERS
x
Single-axis Inverter
2198-S160-ERS
x
Single-axis Inverter
2198-P208 DC-bus Power Supply
In this example, only 1 drive cluster defines the DC-bus group.
Two drive clusters are possible by extending the DC-bus.
• Maximum motor power cable length: 400 m (1312 ft)
– Total motor power cable length is 337 m (1106 ft)
• Maximum supported capacitance: 13,000 μF
– Total system capacitance is 4840 μF
• Maximum 24V DC control power current: 52 A
– Total 24V DC control power current is 20.3 A
– The Coil Current column shows how much of the 24V
current is consumed by the motor brake circuit.
All of the total system values are within the acceptable range.
DC-bus Group
Cat. No.
Axis
Internal
Capacitance
μF
Cable Length
m (ft)
Servo Motor
24V DC Control Power Current Calculations
Servo Motor
Cat. No.
Brake Option
Yes/No
Brake Current
@ 24V DC
A
24V Current
(non-brake motor)
A
DC
Total Current
A
2198-P208
2050
N/A
N/A
N/A
N/A
1.9
1.9
2198-S160-ERS
x
1120
50
(164)
MPL-B980E
No
–
4.6
4.6
2198-S086-ERS
x
560
90
(295)
MPL-B660F
Yes
2.1
4.6
6.7
2198-D020-ERS
x
A
390
20 (66)
VPL-B1152F
No
–
1.4
1.4
B
15 (49)
VPL-B1152F
No
–
2198-D020-ERS
x
A
390
9 (30)
VPL-B1003C
Yes
0.50
1.4
2.4
B
90 (295)
VPL-B1003C
Yes
0.50
2198-D006-ERS
x
A
165
9 (30)
MPL-B310P
Yes
0.50
1.4
1.9
B
9 (30)
MPL-B310P
No
–
2198-D006-ERS
x
A
165
15 (49)
MPL-B310P
No
–
1.4
1.4
B
30 (98)
MPL-B310P
No
–
Totals 4840
337 (1106)
3.6
16.7
20.3