Festo EXCM-10, Repair Instructions

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48 / 52 Festo 7EXCMc_en
5 Homing
Every time the controller is restarted, and thus every time a repair is performed, it must be re-homed. Without successful
homing, positioning cannot be started (exception: jogging). Homing can be started via the control byte CPOS or through
selection of record 0 and always takes places to the axis zero point of the selected coordinate system. The stop is
detected by a motor shutdown in combination with a sharp rise in the motor current. After the fixed stop is reached,
a movement to zero is automatically performed in order to reach a permanently defined and unchangeable minimum
distance from the mechanical stop.
For more information on the homing procedure, see the “Commissioning” description . They can be found on the Festo
website (

www.festo.com ).
6 Cleaning and greasing
6.1 Cleaning
Note
The planar surface gantry normally does not need cleaning. It should only be cleaned in exceptional cases and taking
the following points into consideration.
Do
not clean the guide elements (e.g. guide rails).
– Festo recommends LOCTITE 7061 or an alternative suitable cleaning product for cleaning.
When using other cleaning agents, make sure that they do not corrode the non-metal parts of the planar surface
gantry. If in doubt, check the resistance of the non-metal parts with the help of the information on the Festo website
(
 www.festo.com ).
• Clean the planar surface gantry as required with a soft cloth.
• Avoid cleaning media that can damage the plastic components. Excessive friction or the use of grease-solvent
cleaning agents (e.g. soapsuds) will damage the grease layer.
6.2 Relubricating
Note
The planar surface gantries EXCM-10 and EXCM-30 are initially lubricated during production.
Subsequent lubrication is only required if the guide elements have been degreased.
Relubricate with the same lubricant used to lubricate on delivery.
• Relubricate as described in Chapter 6.2.1 on page 48 .
6.2.1 Lubrication
Note
At
each
lubrication nipple, insert a total grease quantity of 1.0 gram (in two doses of 2 × 0.5 gram) with the help of a
suitable grease gun.
1.
At the same time, lubricate each with half the specified quantity of lubricant.
2. Travel traverse and slide unit of the Y-axis 1 time over the entire stroke.
3. Perform steps 1 and 2 again.