Requirements For The Compliance With The Ul Standards; 24 Vsupply; Power Supply And Ul Fuse Rating - Infranor Gem Drive GD1 Series Installation Manual

GD1 – Installation Guide
4.9 – REQUIREMENTS FOR THE COMPLIANCE WITH THE UL STANDARDS
The UL listing requires the following conditions to be fulfilled by the installer of the drives.
4.9.1 – 24 V
SUPPLY
The end user has to provide a 24 V
supply input, protected by a 4 A UL listed fuse.
4.9.2 – P
OWER SUPPLY AND
The fuse type recommended for drive application is semiconductor protection fuses. 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 range A60Q.
On GD1-230/cc-PS-R and GD1-400/cc-PS-R drives (power supply inside), the fuse ratings must be the
following:
GD1
FERRAZ
For a multiaxis application with N drives, the fuse rating is calculated by the formula given in the table above. But
a rating of 20 A must not be exceeded.
36
isolated power supply (i.e. with an isolation transformer for the auxiliary
DC
UL
FUSE RATING
400/0.5 TO 20
A60Q20-2
MULTIAXIS
N
∑
0.3 X Irated amplifier
1
Part 1 – Chapter 4 – Connections