Lenze 9400 - Manual (Page 416)

11 Basic drive functions
11.6 Homing
416
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
11.6 Homing
With the basic function "Homing" the measuring system of the machine is transmitted to the
controller within the travel range that is physically possible.
• The reference (e.g. zero position of the drive axis in the machine measuring system) can be
defined by reference search or reference setting.
• In case of reference search, the drive travels according to the defined homing mode to detect
the reference in the measuring system independently.
• In the reference point, the home position parameterised in C02642 is set as the current
position. Afterwards, an absolute positioning to the target position parameterised in C02643
takes place (if C02641 = "0").
• If the reference is set in the homing mode "100: Set reference directly" or via the control input
HM_bLoadHomePos, the drive can also be referenced manually if the motor is at standstill. The
measuring system is set by means of the home position parameterised in C02642 or applied at
the input HM_dnHomePos_p.

Danger!
During homing, specially assigned profile parameters are active. If they have not been
set correctly, the drive can engage in uncontrolled movement!

Note!
Normally homing is only required once during commissioning of systems for which the
machine cycle can be represented in the display area of the encoder, e. g. if multiturn
absolute value encoders or singleturn absolute value encoders/resolvers are used during
the machine cycle on one motor revolution.
• 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 ( 421)
• 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).
• When multipole resolvers ( C00080 > 1) are used, a renewed homing is required after
mains switching due to the ambiguity of the evaluated position.