E1 Series Servo Drive User Manual Specification
4-12 HIWIN MIKROSYSTEM CORP.
4.4 Selecting no-fuse breaker (NFB)
While using no-fuse breaker for current shunt, its rated capacity should be 1.5 to 2.5 times of the rated
current of the servo drive and the inrush current of the servo drive must be considered as well. Refer to
the instructions below to select no-fuse breaker.
(1) While using one servo drive:
I
B = C×In
(2) While using two or more servo drives, but do not power on at the same time:
I
B = (ΣIn-InMAX)×K＋CMAX InMAX
(3) While using two or more servo drives, and power on at the same time:
I
B = C1×In1＋C2×In2＋‧‧‧‧＋CN×InN
Note:
I
B
: The rated current of no-fuse breaker
I
n
: The rated current of the servo drive
I
nMAX
: The largest rated current of servo drive while using servo drives of different specifications
C: Multiple for the rated current of the servo drive
The multiple is usually 1.5 to 2.5. (Note: If users are not sure about the multiple, please use 1.5.)
C
MAX
: Multiple for the largest rated current of servo drive while using servo drives of different specifications
K: Demand rate (Note: If users are not sure about the demand rate, please use 1.)
Example:
If five ED1--04- and one ED1--10- are used:
We assume C and C
MAX
are 2.
Do not use multiple servo drives at the same time: I
B
= (2.9×5+6.58x1–6.58)×1+6.58×2=27.66 A
rms
Use multiple servo drives at the same time: I
B
= 2×2.9+2×2.9+2×2.9+2×2.9+2×2.9+2×6.58=42.16 A
rms
To Next Page
Loading...
Need help?
General
