Operating Instructions
Zero-4 / 5-Channel Stepper Controller
CNC-STEP GmbH & Co. KG ▪ Siemensstrasse 13-15 ▪ 47608 Geldern ▪ Germany
Page 26
Support: +49 (0)2831/91021-50
6/16/2021
5 .1 . 1
Open the chassis
•
Remove the left, upper aluminum profiles by turning out one of the round head screws on
the front and back walls.
•
Loosen the screw of the case lid and remove it.
•
Leave side panels, front panel, and back wall in your place if possible.
5 .1 . 2
Replacement of fuses
The fuses are in two plastic fuse holders (green
components in the picture on the right). First,
remove the top of the fuse holder and check the fuse
with a pass-through tester. If necessary, then replace
the fuse and reseat the top of the holder on the
circuit board.
Attention! Use only fuses with equal value
(sluggish 8A) and allow for the voltage used
(250V~). If the fuse triggers more often, the
connected consumer has too high a current
consumption, or there is a defect. Never use fuses with a higher current value!
