REXROTH IndraDrive C User Manual

11-8 Control Circuits for the Mains Connection Rexroth IndraDrive
DOK-INDRV*-SYSTEM*****-PR02-EN-P
Note: The pickup current of the auxiliary relay for control of the
mains contactor flows via the emergency stop circuit. In order
that the mains contactor picks up reliably, the total resistance
of the emergency stop circuit taking effect between
connections X3/1 and X3/9 has to be below 45 Ω!
Due to the DC bus short circuit, motors with permanent magnet excitation
can be shutdown with deceleration even if the electronic system of the
drive is disturbed. In order to trigger a DC bus short circuit in such a case,
the Bb contacts of the drive controllers have to be connected in series
with the control contact and wired in the E-Stop circuit. The DC bus short
circuit only triggers in the case of drive failure. If E-Stop is actuated,
asynchronous drives therefore are braking, too.
When the Bb contacts of the supply unit are connected in series with
the control contact in the E-Stop circuit, the DC bus dynamic brake is only
triggered in the case of a supply unit error.
In the case of E-Stop or when the monitors of the supply unit trigger (e.g.
mains failure), the electronic system of the drives shuts them down
according to the error reaction that was set.
WARNING
Personal injury caused by uncontrolled axis
motion!
The DC bus short circuit protects machines in the case of
drive errors. By itself it cannot assume the function of
personal protection. In the case of errors in the drive and
supply unit, uncontrolled drive motion can occur even
when the DC bus short circuit has been activated.
Asynchronous machines do not brake when the DC bus
has been short-circuited. Personal injury can occur
according to the machine design.
⇒ Provide additional monitors and protective devices on
the installation side.
⇒ Use the Integrated Safety Technology by Rexroth.
When the E-Stop pushbutton is actuated, the mains contactor in the
supply unit drops out. The E-Stop relay or an auxiliary contact of the
mains contactor switches off the drive enable signals. The drives are shut
down according to the error reaction set in the drive controller.
The mains contactor is switched off and the DC bus short circuit triggers
when there is a drive error message by the supply unit (Bb1 contact), an
error message by the control unit (servo error) or a limit switch has been
passed.
Features
Operating Principle

REXROTH IndraDrive C Specifications

General

Protection Class	IP20
Voltage Range	200 V to 480 V
Input Voltage	200 to 480 VAC
Control Modes	Speed, Torque, Position
Communication Interfaces	PROFIBUS, CANopen, Ethernet
Feedback Systems	Resolver, incremental encoder, absolute encoder