Mitsubishi Electric M800W Series, Connection And Set Up Manual

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M800W/M80W Series Connection and Setup Manual
25 Setting the Position Detection System
494 IB-1501268-K
The zero point initial setting is now complete. After initializing all axes, turn the power OFF and ON.
(*1) Low current limit value may prevent the basic movement of the axis. Do not set such a low value.
Set an appropriate value taking into account the acceleration torque and the friction torque.
When the current limit value is set too low, the servo error 3E (magnetic pole position detection error) may occur.
(*2) Depending on the setting value of the parameter "#2059 zerbas", the value set for "Zero-P" differ as shown in the
following figure.
- (7) to (9) in this diagram indicate steps of the operation procedure.
(Note 1) To change just the basic machine coordinate zero point, set "#0 Absolute posn set" and "#2 Zero-P", and then
turn the power OFF and ON.
(Note 2) If pressing against the machine end is attempted without passing the grip point once after turning the power
ON, the operation message "Not passed on grid" will appear. Return to a point before the last grid, and then
repeat from step of pressing against the machine end stopper.
(Note 3) If the first grid point is covered by the grid mask (#2028 grmask) as a result of return to the electric basic
position in the step (9), the axis stops at the next grid point.
Note that reference position shift amount (#2027 G28sft) is invalid.
(7) Press the axis against the machine
end stopper. State: [Stopper]
Machine end: Distance between the machine end stopper and the grid
point immediately before the stopper
(8) When the parameter "#2059 zerbas"
is set to "0", the axis pushes against
the machine end stopper and stops
when the current reaches its limit. State: [Complete]
Machine end: 0.000
Machine position: Current machine position
(9) When the parameter "#2059 zerbas"
is set to "1", the axis pushes against
the machine end stopper, and the
current reaches its limit, the axis
reverses and moves at the pushing
speed (#2055 pushf). Then the axis
stops at the first grid point.
Move the cursor to "Zero-P" with the [
↑ ] and [ ↓ ] keys. Input the distance
from basic machine coordinate
system zero point to the grid point
immediately preceding the machine
end stopper then press [INPUT].
State: [Complete]
Machine end: Distance from the machine end stopper to position
immediately preceding the grid point
Machine position: Current machine position
(7)
(8)
(9)
Basic machine coordinate
system zero point Reference
position
Zero return parameter
"#2037 G53ofs"
Grid point
(electric basic
position)
Machine end stopper
(mechanical basic
position)
"Machine end"
"#2 Zero-P" (#2059 zerbas=1)
"#2 Zero-P" (#2059 zerbas=0)
Start point