Etel DSC2P - Page 123

ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05 Chapter C: System functions
Operation & Software Manual
Direct Drives & Systems 123
If the motor is on the limit switch, it moves back the distance given by parameter K48.
K40 = 11:
Same as K40 = 10 but with a negative movement.
K40 = 12, 13, 14 or 15:
Homing with a multi-reference mark is realized. The motor needs to find only two successive reference marks
to determine its absolute position (the ’0 machine’ is always positioned at the same place regardless the two
ref. marks found). If the motor finds one reference mark followed with a mechanical end stop (K40 = 12 or 13)
or with a limit switch (K40 = 14 or 15) the reference mark is not considered and the motor starts the homing in
the opposite direction.
K40 = 16, 17, 18 or 19:
They are specific homings where a reference mark is detected by the controller only if DIN2 input is set to 1.
Remark: When a DSCDM is used with K40 = 16, 17, 18 and 19, the HOME NOT POSSIBLE error
(M64=69) will appear if bits# 2 and 3 of parameter K58 are equal to 0. The same error will occur
with K40 = 18 and 19 if bits# 0 and 1 of parameter K58 are equal to 0 while bit# 3 = 1.
K40 = 20:
Homing with a multi-reference mark. The motor moves the distance defined by parameter K46 to find 2
successive ref. marks. If the motor does not find two successive ref. marks (or a mechanical end stop) during
this movement, the MULT IDX SEARCH error (M64=61) will appear on the LCD display.
MOTOR
Positive limit switch
Motor braking distance (variable)
Negative limit switch
Ref. mark status depending on motor position
Positive limit switch status
Negative limit switch status
Motor braking distance (if K48=0)
Motor braking distance (variable)
Ref. mark
I
MOTOR
Motor braking distance (variable)
The ’0 machine’ is found
0
0
The '0 machine' is found
MOTOR
K46
0
0