3 BASIC FUNCTION
3.20 Halt [G] [WG]
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3
3.20
Halt [G] [WG]
Halt defined in CiA 402 enables temporary stop of the servo motor.
When 1 is set in Bit 8 (HALT) of [Controlword (Obj. 6040h)], the servo motor decelerates to a stop with the deceleration time
constant of [Profile deceleration (Obj. 6084h)] or [Homing acceleration (Obj. 609Ah)], and then the state remains as
"Operation Enable" (Servo-on), in accordance with the setting of [Halt option code (Obj. 605Dh)]. When Halt Bit is set to 0
during the deceleration stop operation, the servo motor decelerates to a stop and returns to the operable state.
• This function can be used in the profile mode (pp/pv/tq) and homing mode (hm). The other control modes
can be operated regardless of the Halt Bit status.
• In the profile torque mode (tq), [Torque demand value (Obj. 6074h)] is set to 0 regardless of [Halt option
code (Obj. 605Dh)]. The amount of torque change at this time can be set using [Torque slope (Obj. 6087h)].
Objects for setting
For details on the objects, refer to the User's Manual (Object Dictionary).
*1 Available on servo amplifiers with firmware version A5 or later.
The following table shows descriptions of [Halt option code (Obj. 605Dh)].
Timing chart
Index
Sub
Object
Name
Description
605Dh
VAR
Halt option code
Setting for executing the Halt function
Refer to the following table for the description.
6084h
VAR
Profile deceleration
Deceleration at arrival to target position (acc units)
609Ah
VAR
Homing acceleration
Acceleration/deceleration time constant at homing (acc units)
Setting value
Description
1
The servo motor decelerates to a stop in accordance with [Profile deceleration (Obj. 6084h)] during the profile mode (pp/pv) and in
accordance with [Homing acceleration (Obj. 609Ah)] during the homing mode (hm), and the servo motor remains as "Operation Enabled
(servo-on)".
2
(not currently
supported)
After deceleration to a stop in accordance with [Quick stop deceleration (Obj. 6085h)], the state remains as "Operation Enabled". (Servo-
on is maintained.)
3
(not supported)
After deceleration to a stop by limiting the current, the state remains as "Operation Enabled". (Servo-on is maintained.)
4
(not supported)
After deceleration to a stop by limiting the voltage, the state remains as "Operation Enabled". (Servo-on is maintained.)
HALT
([Controlword
(Obj. 6040h)] bit 8)
t
t
Servo motor speed
Deceleration time
set with Halt option
code