Beckhoff AX5000 Series Function Manual

I*t calculation in the AX5000 servo drive
Function description 45
Version: 1.5
9.1.1 Taking AX5206 as an example
The rated current for channel A is increased to 6.6 A and the peak current set to 11 A.
Reference values for the example calculation (channel A):
IDN Description Value
S-0-0112 Amplifier rated current 12.0 A (fixed)
P-0-0052 Time limitation for peak current 0
P-0-0090 Channel peak current 13.0 A (fixed)
P-0-0091 Channel rated current 6.0 A (fixed)
P-0-0092 (channel A) Configured channel peak current 11.0 A
P-0-0093 (channel A) Configured channel current 6.6 A ( > P-0-0091, therefore select this value)
t
max
Max. time for I
peak
7.0 s (fixed)
Calculation for channel A
Total overcurrent time area of the device:
Maximum possible time (P-0-0052
max
):
The set maximum current of 11 A can be provided for 10.18 sec.
After that the current is limited to P-0-0093 (6.6 A).
The maximum settable time in P-0-0052 is thus 10.18 s.
Calculation for channel B
There is a limitation in P-0-0093 for channel B in this example:
P-0-0093
max
= S-0-0112 – P-0-0093 (Ch. A) = 5.4 A
Reference values for the example calculation (channel B):
IDN Description Value
P-0-0052 Time limitation for peak current 0
P-0-0092 Configured channel peak current 11 A
P-0-0093
max
Configured channel current 5.4 A
Maximum possible time (P-0-0052
max
):
The set maximum current of 11 A can be provided for 9.50 sec.
After that the current is limited to P-0-0093 (5.4 A).
The maximum settable time in P-0-0052 is thus 9.50 s.
Note
Although a smaller value is set for P-0-0093, P-0-0093
max
is used in the calcu-
lation.

Beckhoff AX5000 Series Specifications

General

Control	EtherCAT
Protection Class	IP20
Feedback	Resolver, EnDat, Hiperface, SSI
Safety	STO (Safe Torque Off)
Relative Humidity	5% to 95%, non-condensing
Certifications	CE, UL, cUL
Operating Temperature	0…+45 °C