The following table describes the instrument states and the transitions.
States of the status machine
State
Description
Not ready for switch-on
PMCtendo DD4 is not ready for switch-on. No operation readiness (BTB) is sig-
naled from the amplifier software.
Switch-on inhibited
PMCtendo DD4 is ready for switch-on. Parameters can be transferred, DC-link
(DC-bus) can be switched on, motion functions cannot be carried out yet.
Ready for switch-on
DC-link voltage must be applied. Parameters can be transferred, motion
functions cannot be carried out yet.
Ready for operation
DC-link voltage must be switched on. Parameters can be transferred, motion
functions cannot be carried out yet. Output stage is switched on (enabled).
Operation enabled
No error present. Output stage is switched on, motion functions are enabled.
Fast stop activated
Drive has been stopped, using the emergency stop ramp. Output stage is
switched on (enabled), motion functions are enabled.
Error response active/error
If an instrument error occurs, the PMCtendo DD4 changes to the instrument
state “Error response active”. In this state, the power stage is switched off
immediately. After this error response has taken place, it changes to the state
“Error”. This state can only be terminated by the bit-command “Error-reset”.
To do this, the cause of the error must have been removed (see ASCII
command ERRCODE).
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User manual PROFIBUS DP PMCtendo DD4
6 Process data channel