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8.1.6
Inverter operating commands
The converter is operated using various inputs, such as control cable terminal block inputs,
control words via fieldbus, signal generators etc. Further information can be found under
"Configuring operating sources (Page 83)"
The commands have the following functions:
• "Controller enable"
The power unit in the converter, consisting of IGBTs, is only active when the controller is
enabled. As well as the options for enabling the controller via the software, control cable
terminal -A1-X2:8 must also be controlled. If you deactivate this function, the output
semiconductor is blocked immediately and the motor coasts to a stop.
• "Speed on"
Use this command for controlled shutdown of a motor. The motor passes through a brake
ramp during shutdown. The converter is immediately ready for a restart after the braking.
• "Reset"
Acknowledge an active error using the "Reset" command. The converter also takes into
account a shutdown using functions "Emerg. stop" or "Off1" and "Off2".
• "Off1 (NC)" and "Off2 (NC)"
– Initiate controlled braking with the "Off1" command. This command is initiated by
– Controlling "Off1" and "Off2" via the control cable terminal strip is realized using an NC
Installation and Operating Instructions for LOHER DYNAVERT I Series 7
Operating Instructions, 10/2022, 4BS0745-002
software. Initiate an immediate block with the "Off2" command. An optional main
contactor drops out. Acknowledge the converter before restarting using the "Reset"
command. When restarting, the converter must first be pre-charged.
(normally closed) contact.
Operation
8.1 Operation
81
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