Omron SYSDRIVE MX2 SERIES, User Manual

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6 Vector Control and Applied Functions
6 - 42 Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
z Origin search mode 2
This mode provides a method to improve the processing time and accuracy of origin search by
switching between two frequency settings in the origin search mode.
In the Origin Search Mode 2 Frequency (P071), set a high frequency to move to the proximity of the
origin in a short time.
In the Origin Search Mode 1 Frequency (P070), set a low frequency to improve the accuracy of the
stop position.
The figure below shows the operation of the origin search mode 2, where the horizontal axis of the
upper graph represents the position and the lower graph represents the time, respectively.
(1) When the origin search startup signal (C001 to C007 = 70: ORG) turns ON, the
inverter accelerates in the direction set in the Origin Search Direction Selection
(P069) for the set acceleration time. Do not input the RUN command. Doing so acti-
vates the simple position control function.
(2) The inverter operates at the Origin Search Mode 2 Frequency (P071).
(3) When the origin search limit signal (C001 to C007 = 69: ORL) turns ON, the inverter
decelerates for the set deceleration time.
(4) The inverter operates in a direction opposite to that set in the Origin Search Direc-
tion Selection (P069) at the Origin Search Mode 1 Frequency (P070).
(5) When the origin search limit signal (C001 to C007 = 69: ORL) turns OFF, the inverter
switches to the DC injection braking mode.
(6) Turn OFF the origin search startup signal (C001 to C007 = 70: ORG). The Current
Position Monitor (d030) is cleared to zero and starts counting the current position
again.
(1)
(2)
(3)
ON
ON
(4)
(1)
(2)
(3)
(5) DB
ON
ON
(4)
(5)
DB
Origin Search Mode 2 Frequency (P071)
ORG input
ORL input
Output
frequency
Origin
Position
Origin Search Mode 1 Frequency (P070)
Origin Search Mode 2 Frequency (P071)
Origin Search Mode 1 Frequency (P070)
Time
ORG input
ORL input
Output
frequency