Assembly
34
11.00 | EGN | Assembly and Operating Manual | en | 389056
5.2.2.3 External protection
CAUTION
Risk of damage to the controller!
If the power circuit of the controller is too high or not protected,
the controller may be damaged.
•
Protect the power circuit of the ECM controller with maximum
6 A.
The power circuit of the ECM controller must be protected by the
customer.
The following three alternatives for ensuring external fuse
protection are possible:
• Protection by means of an external, fixed fuse.
• Protection via current limiting of the supplying power supply
unit
• Protection via a motor protection switch
Protection by means of an external, fixed fuse.
The fuse must comply with the technical data given in the
following table.
The following fuse manufactured by ESKA is recommended:
Manufacturer's code
520.525
Symbol
ZCS-6.3A
Type
safety fuse
Characteristics
fast-acting
Type:
ceramic, miniature fuse
Switching capability [kA]
1.5
Rated current [A]
6.3
Rated voltage [VAC]
250
Tripping characteristic
2.1 I
n
: max. 30 Min.
2.75 I
n
: min. 10 ms,
2.75 I
n
: max. 2 s,
4 I
n
: min. 3 ms,
4 I
n
: max. 300 ms,
10 I
n
: max. 20 ms
Maximum voltage drop [mV]
200
