NORD Drivesystems BU0280 - Manual (Page 71)

7 DeviceNet data transmission
BU 0280 GB Subject to technical amendments 71
PZD3: “Bus function Actual value 2" (SK 200E: (P543[02]) or SK 500E (P544)) and
PZD4: “Bus function Actual value 3" (SK 200E: (P543[03]) or SK 500E (P545))
7.2.4 The status machine
The frequency inverter passes through a status machine“. The changes between various states are
triggered by the respective control commands in the process data control word. The actual status is returned
in the process data status word.
After switching on, the frequency inverter is in Switch-on disabled
status. This status can only be ended by
transmitting the “ Shut down (Off 1)” command.
The answer to a master telegram normally does not yet contain a reaction to the control command. The
controller has to check the answers from the slaves as to whether the control command has been carried
out.
The following bits indicate the status of the frequency inverter:
Status Bit 6
Switch-on
disable
Bit 5
Emergency
stop
Bit 4
Disable
voltage
Bit 3
Fault
Bit 2
Operation
enabled
Bit 1
Standby
Bit 0
Ready for
switch-on
Not on standby 0 X X 0 0 0 0
Switch-on disabled 1 X X 0 0 0 0
Ready for switch-on 0 1 1 0 0 0 1
Activated 0 1 1 0 0 1 1
Operation enabled 0 1 1 0 1 1 1
Error 0 X X 1 0 0 0
Error active 0 X X 1 1 1 1
Emergency stop active 0 0 1 0 1 1 1