B-1
Sequencing Logic
AC30V series Variable Speed Drive
Appendix B:
Sequencing Logic
Drive State Machine
DS402
The sequencing of the AC30V is based on the DS402 / DriveCOM / IEC 61800-7 standard as used by most industrial fieldbusses. This allows it
to be easily controlled and monitored by a PLC using the standards’ Control Word and Status Word.
SEQUENCING STATE
The sequencing state of the unit is indicated by an enumerated value given by the
0678 Sequencing State
parameter.
Value
DS402 Sequencing State
Description
0
NOT READY TO SWITCH ON
Not ready to switch on. The drive is initialising or being configured.
1
SWITCH ON DISABLED
The Drive will not accept a switch on command
2
READY TO SWITCH ON
The Drive will accept a switch on command.
3
SWITCHED ON
The Drive will accept an Operation Enable (Run or Jog) command.
- Power stage of the Drive is ready to operate.
- Voltage has not yet been applied to the motor terminals.
4
OPERATIONAL ENABLED
Normal operational state of the drive. This state includes Running, Jogging,
Stopping (Disabling Operation) and Shutting Down (Switching Off).
- Voltage applied to the motor terminals.
5
QUICKSTOP ACTIVE
Emergency stop (Fast stop) is active
6
FAULT REACTION ACTIVE
The Drive is processing a trip event
7
FAULTED
The Drive is tripped awaiting trip reset
