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4.3.2 Dog mode home position return
In this mode, instead of the encoder Z-phase(Fig. 4-6), the DOG signal is used to switch from
“home position returnspeed” PC04 to“creep speed” PC05.You can use parameter PD16 “prox
-
imity dog detection polarity” to specify whether a logical “1” or a logical “0” should be identifiedas
an active DOG signal.
As in ቢ above, the physical home position can be shifted in relation to the home (zero) position
of the encoder (Z-phase) with PC06 “home position offset (shift)”. In addition to this you can also
set a non-zero coordinate for the home position with PC07.
Conditions for the proximity dog signal:
The proximity dog signal (DOG) must fulfill the followingconditions to ensure that the Z-phase of
the encoder is detected during the activation period of the DOG signal:
Positioning with Digital Inputs Home Position Return
MR-J3-T 4-19
L
1
Ȅ
60
Ⴇ
2
L1 = Length of the DOG signal in [mm]
V = Home position return speed in [mm/min]
t
d
= Deceleration time in [s]
L
2
Ȅ 2 ႧͬS L2 = Length of the DOG signal in [mm]
ͬS = Distance for one rotation of the motor in [mm]
V
t
d