Mitsubishi Electric M800VW Series Programming Manual page 547

M800V/M80V Series PLC Programming Manual (2/2)
13 Spindle Control
13.10 Spindle Position Control (Spindle/C Axis Control)
 Speed pattern during zero point return
 The zero point return from a spindle stop accelerates at a constant slope until it reaches the zero point return speed (#3112
cax_spd) and then decelerates at a constant slope and stops at the zero point (Z phase). (Refer to the following figure
"During Stop")
 The zero point return from a state of spindle operation operates as follows. (Refer to the following figure "During Rotation")
- When "#3106 zrn_typ/bitD" (Interpolation mode selection 1(zero point return initiated during rotation)) is set to "0"
The zero point return decelerates to a stop to the zero point (Z phase) at a constant inclination.
- When "#3106 zrn_typ/bitD" (Interpolation mode selection 1(zero point return initiated during rotation)) is set to "1"
The zero point return accelerates/decelerates to the zero point return speed with linear acceleration/deceleration pat-
tern ("#3001 slimt1" and subsequent, "#3101 sp_t1" and subsequent) and then decelerates to a stop to the zero point
position at a constant inclination.
When the spindle rotation speed is lower than the zero point return speed or when the zero point return speed is "0", the
zero point return stops at the zero point position without accelerating/decelerating to the zero point return speed.
 When the Z-phase is not detected, it will be detected by the following operations:
- For the case that "#3106 zrn_typ/bit3" (Phase Z signal detection ON) is set to "0" (Invalid)
The Z-phase will be detected by rotating the spindle at the speed set in "#3112 cax_spd" (Spindle C axis zero point
return speed).
After detecting the Z-phase, the C axis zero point return operation is performed.
- For the case that "#3106 zrn_typ/bit3" (Phase Z signal detection ON) is set to "1" (Valid)
The Z-phase will be detected by rotating the spindle at the speed set in "#3109 zdetspd" (Z-phase detection speed).
After detecting the Z-phase, the C axis zero point return operation is performed at the speed set in "#3112 cax_spd"
(Spindle C axis zero point return speed).
[When #3106 zrn_typ/bitD = 0]
At a standstill
Speed
#3001 slimt1
Zero point return
speed
#3112 cax_spd
#3115 sp2_t1
*SVFn
Zero point return direction #3106 zrn_typ/bitA-9 (short-
cut/forward run/reverse run)
[When #3106 zrn_typ/bitD = 1]
At a standstill
Speed
#3001 slimt1
Zero point return
speed
#3112 cax_spd
#3115 sp2_t1
*SVFn
Zero point return direction #3106 zrn_typ/bitA-9 (short-
cut/forward run/reverse run)
IB-1501668-B
#3001 slimt1
Zero point
Zero point return
(Z-phase position)
speed
#3112 cax_spd
Time
*SVFn
#3001 slimt1
Zero point
Zero point return
(Z-phase position)
speed
#3112 cax_spd
Time
*SVFn
526
Rotating
Speed
#3115 sp2_t1
Zero point return direction #3106 zrn_typ/bitA-9 (short-
cut/forward run/reverse run)
Rotating
Speed
#3115 sp2_t1
Zero point return direction #3106 zrn_typ/bitA-9
(shortcut/forward run/reverse run)
Zero point
(Z-phase position)
Time
Zero point
(Z-phase position)
Time