Lenze E94AxHE Servo Drives 9400 HighLine (Firmware 01-37) - Manual (Page 164)

9400 HighLine | Parameter setting & configuration
Basic drive functions
Homing
164 Firmware 1.37 - 09/2006
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9.5 Homing
The basic function "Homing" serves to transfer the measuring system to the physically
possible travel range of the controller.
r The reference (e.g. zero position of the drive axis in the machine measuring system) can
be defined by reference search or reference setting.
r In case of reference search, the drive travels according to the defined homing mode to
detect the reference in the measuring system independently.
r In case of reference setting in the homing mode "100: Set reference directly" or via
control input HM_bLoadHomePos the drive can also be referenced manually when the
motor is at standstill. The measuring system is set according to the home position
parameterised in C02642 or applied to the input HM_dnHomePos_p.
Note!
The encoder position is stored safe against mains failure in the memory module
and is therefore known to the drive control even after the mains has been
switched.
Behaviour of the home position after mains switching
If the home position/information is to be available after mains switching as well,
the setting C02652 = "1: Keep" is required.
• One further condition for keeping the home position/information after
mains switching is the compliance with the maximally permissible angle of
rotation of the encoder which can be set in C02653 .
• When resolvers or single-turn absolute value encoders are used and the
mains is switched off (24-V supply off), the drive may only be moved by ½
motor revolution since otherwise the home position will get lost due to the
ambiguity of the encoder information.
A renewed reference setting is only required in case of a renewed commissioning
or in case of service (e.g. when drive components are exchanged).