January 2012 6.16 The Control Loop 875
Basic settings:
Ensure that the clamping or brakes activate when an emergency stop is
effected.
To enable drives use the input configured as -ES.B. on the PL 62xx or
UEC 11x PLC system module.
Ensure via Module 9159 (drive controllers are switched off) that the
clamping or brakes activate before the drive controllers (current and speed
controllers) are switched off.
Before switching off the drives, save the positions of axes with common
encoders.
Ensure that all control components are wired correctly. (HEIDENHAIN
recommends always wiring the system according to the basic circuit
diagram of the MANUALplus 620.) Registered customers can download the
current basic circuit diagram from the HESIS-Web Including Filebase on the
Internet at http://hesis.heidenhain.de.
If you are using axis groups, assign the axis to the axis group required for
drive enabling in MP_driveOffGroup.
To switch on the drive controller:
With PP_AxDriveOnRequest, switch the drive motor on (see "Opening the
position control loop" on page 848).
Use NN_AxDriveOn to check the status of the drive motor.
If drive enabling through X150/X151 is missing, the drive motor will always be
switched off and the position controller will be informed accordingly.
If drive enabling of axis groups is used, the PLC program should perform a
plausibility test to see if all axes used are defined in MP_driveOffGroup.
If MP_driveOffGroup is configured incorrectly, the drive motor might not
switched be off correctly!
If drive enabling is missing, the error message 8B40 No drive release
<axis> appears.
If you do not want to use drive enabling for axis groups, but rather just
global drive enabling through -ES.B, remove the optional parameter
MP_driveOffGroup from the configuration of your machine.
The MANUALplus 620 monitors the time between the switch-on of the
drive controller (via Module 9161) and the READY signal of the power
module (via the PWM cables). If the READY signal is missing after the
waiting time has passed, the error message 8B40 No drive release
<axis> appears. In MP_ampReadyWaitTime you preset the permissible
waiting time.
If the readiness signal is reset at the PWM outputs, the drive controllers
(current and speed controllers) are switched off. Normally, the error
message MOVEMENT MONITORING IN <AXIS> B is output through the
position control loop. Subsequently, the PWM signal release is switched
off by the reset signal.
To Next Page
Loading...
