MHT258a (Engl.)5-39
■ Related items
・Parameter setting
Origin return action depends on basic parameter 71 to 79 setting.
Para. Name Setting range Initial value Change
71 Origin return pattern 1 : Pattern 1, 2 : Pattern 2
3 : Pattern 3, 4 : Pattern 4
1 Power
72 Origin return direction 0 : Positive,
1 : Negative direction
0 Power
73 Z-phase valid/invalid 0 : Valid
1 : Invalid
0 Power
74 Origin LS logic 0 : NO contact
1 : NC contact
0Always
75 Origin return speed 0.01 to Max. speed [r/min]
(in 0.01 steps)
500.00 Always
76 Origin detection creep speed 0.01 to Max. speed [r/min]
(in 0.01 steps)
50.00 Always
77 Origin shift quantity 1 to 2,000,000 (in increments of 1)
[x unit q’ty]
1000 Always
78 Origin return reversing quantity 1 to 79,999,999 (in increments of 1)
[x unit q’ty]
0Always
79 Origin return position 1 to ±79,999,999 (in increments of 1)
[x unit q’ty]
0Always
*After changing basic para. 71 to 73, power supply need be turned on again.
・Origin return action
At the ON edge of origin return [ORG] signal, the following operations are automatically carried out.
(a) At the ON edge of [ORG] signal, motor starts at “Origin return speed” (basic para. 75) in “Origin return direction” (basic para. 72)
(b) When the [LS] signal turns from off to on, speed is reduced to “Origin detection creep speed” (basic para. 76). While [LS] on, motor runs
at constant speed.
(c) The first encoder Z-phase signal is detected following the transition of [LS] signal from OFF to ON.
(d) The motor stops after rotating by “Origin shift q’ty” (basic para. 77) from the detection of Z-phase signal.
(e) The [PSET] signal turns on with the stopped position as “Origin return position” (basic para. 79). “Origin return complete” signal as the
control output signal turns on.
An origin return action can be selected out of 4 patterns in the “Origin return pattern” (basic para. 71).
Also, with the Z-phase input invalid (1) selected in the “Z-phase valid/invalid” (basic para. 73), motor can be stopped after running by the
“Origin shift q’ty” (basic para. 77) from the ON to OFF edge of [LS] signal.
The ON/OFF status of [LS] signal can be inverted using “Origin LS logic” (basic para. 74)
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