When the Combibox has reached maximum wear, the wear parts must
be replaced. Wear parts include the brake magnet, the armature, and the
clutch rotor. To order spare parts, provide the 11 digit part number, or the
following information:
1. Size and type of unit
2. Magnet voltage
3. Input style of unit (solid or hollow shaft, and bore size)
In order to replace worn parts with new parts, refer to the next page and
proceed as follows:
1. Open the terminal box and loosen all electrical connections to the clutch
and the brake.
2. Disassemble the Combibox housing by unscrewing the four bolts.
3. Replace the worn clutch rotor with the new rotor Avoid any contamination
of the friction lining. The clutch rotor is always on the input side of
the Combibox, the arrow on the housing points from the input to the
output.
4. Replace the armature and the brake magnet with the new parts. Use
LOCTITE when tightening all screws.
Clean friction surfaces with
pure alcohol before installation.
5. Wire the clutch and the brake terminals in the conduit box.
6. Assemble the Combibox and adjust the air gap as outlined above.
REPLACEMENT & REPAIR PROCEDURE
ELECTRONIC CONTROLS & ACCESSORIES
KEB Combitron 33.94 Rapid Switch
The combitron 33.94 provides a smooth 24VDC signal to the clutch/brake
unit through activation by proximity switches, photocells, mechanical relays,
etc. The 33.94 briefly overexcites the coils, which reduces switching times
for a given load by approximately 2/3’s. Extremely high cycle rates can be
achieved while maintaining the absolute accuracy necessary for complex
motion control applications.
Rectifiers
KEB rectifiers are the best in the industry and are varistor protected for
maximum safety when switching inductive loads. Bridge and half-wave
rectifiers are available for AC or DC side switching.
6
Combibox Instruction Manual