Operating Instructions
Zero-3 / 5-Channel Motor Controller
CNC-STEP e.K. ▪ Siemensstrasse 13-15 ▪ 47608 Geldern ▪ Germany
Page 23
Support: +49 (0)2831/91021-50
12.10.2012
5 .1 . 1
Opening the housing
Remove the aluminum profiles on the top left side by unscrewing one of the round-head
screws on the front and rear wall respectively.
Loosen the screw of the housing cover and remove it.
If possible, leave the side elements, the front panel and rear panel in place.
5 .1 . 2
Changing fuses
The fuses are located in two plastic fuse holders
(green components on the right in the picture).
Start by removing the upper section of the fuse
holder and check the fuse with a continuity tester.
Then replace the fuse if necessary and place the
top part of the holder back in the PCB.
Caution! Use only fuses with the same value
(slow-blow 8A) and rated for the voltage used
(250V~). If the fuse trips frequently the connected
external consumer has excessive current
consumption or is defective. Never install fuses with higher amperage!
