Infranor CD1-k, Installation Manual

Page: 34 / 40

34
Chapter 4 – Connections
CD1-k – Installation Guide
4.3 - POWER SUPPLY AND UL FUSE RATING
The fuse type recommended for motor applications is of class RK5. The maximum short-circuit power of the
mains must not exceed 5000 Arms at a voltage of 480 V, when protected by a UL fuse of type RK5 and A60Q40
for 400/70 and 400/90 ratings.
On CD1k-400/I amplifiers, the fuse ratings must be the following:
CD1-k 400/1.8 to 7.2 400/14 400/30 and 45 400/70 and 90 Multiaxis
BUSSMANN
Class RK5
Type FRS-R FRS-R-4 FRS-R-8 FRS-R-20
FERRAZ
A60Q40
∑
N
1
amplifier rated
I × 3 , 0
LITTELFUSE
Class RK5
Type FLSR-ID FLSR2ID FLSR8ID FLSR20ID
FERRAZ
A60Q40
∑
N
1
amplifier rated
I × 3 , 0
For a multiaxis application with N amplifiers, the fuse rating is calculated by the formula given in the table above.
But a rating of 20 A must not be exceeded on 400/1.8 A to 14 A amplifiers and 40 A must not be exceeded on
400/30/45/70 A and 90 A amplifiers (see
chapter 4, section 1.5 ).
On CD1k-230/I amplifiers, the fuse ratings must be the following:
CD1-k 230/2.5 to 10.5 230/16.5 Multiaxis
BUSSMANN
Class RK5
Type FRN-R FRN-R-6 FRN-R-9
∑
N
1
amplifier rated
I × 3 , 0
LITTELFUSE
Class RK5
Type FLNR-ID
FLNR6ID FLNR9ID
∑
N
1
amplifier rated
I × 3 , 0
For a multiaxis application with N amplifiers, the fuse rating is calculated by the formula given in the table
above. But a rating of 20 A must not be exceeded on 230 V amplifiers (see
chapter 4, section 4.6 ).