Siemens SINUMERIK 802D sl Function Manual page 23

Position measuring system 1 (V380x 0001.5)
A position measuring system may be connected to the spindle. In this case the signal for the
spindle has to be set.
Axes always require this signal. In this case, a position measuring system must be installed.
Controller enable (V380x 0002.1)
When the controller enable is activated for the drive, the position control loop of the
axis/spindle is closed. The axis/spindle is then subject to position control.
When the controller enable is removed the position control loop and, with a delay, the speed
control loop of the axis/spindle are opened.
IS "Position controller active" (V390x 0001.5) is set to 0 signal (checkback).
Activation:
The controller enable for the drive can be set and removed from the following places:
1. From the PLC user program with interface signal "Controller enable" (in normal cases)
2. The controller enable is cancelled internally by the control when certain faults occur in the
3. By the control if the following event occurs: IS "EMERGENCY STOP" (V2600 0000.1) is
Removal of controller enable for a moving axis/spindle:
● The spindle is braked to standstill with rapid stop taking account of MD36610
● The position control loop of the axis/spindle is opened. Checkback signal to PLC with IS
● As soon as the actual speed has reached the zero speed range, the drive controller
● Notice: If the setting for the controller enable shutdown delay is too small the controller
● The actual position value of the axis/spindle continues to be acquired by the control.
This axis/spindle state cannot be changed until after "Reset".
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Application: Removal of controller enable before clamping an axis/spindle.
machine, the drive, the position measuring system or the control (when faults occur)
Application: The traversing axes must be brought to a standstill by a rapid stop due to a
fault.
active
AX_EMERGENCY_STOP_TIME (duration of the braking ramp in error states). Alarm
21612 "Controller enable reset during movement" is then triggered.
"Position controller active" (V390x 0001.5) = 0 state. The timer for the controller enable
delay time (MD36620 SERVO_DISABLE_DELAY_TIME (shutdown delay of controller
enable)) is also started.
enable is removed. Checkback signal to PLC with IS "Speed controller active" (V390x
0001.6) = 0 state. The controller enable of the drive is removed at the latest after the time
set in MD36620 SERVO_DISABLE_DELAY_TIME has expired.
enable will be removed even though the axis/spindle is still moving. The axis/spindle is
then stopped abruptly with setpoint 0.
Various Interface Signals (A2)
1.2 Signals from PLC to NCK
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