ACQ800-37 Hardware Manual
63
Planning the electrical installation
Before opening an output contactor (in DTC motor control mode)
Stop the drive and wait for the motor to stop before opening a contactor between the
output of the drive and the motor when the DTC control mode is selected. (See the
Firmware Manual
of the drive for the required parameter settings.) Otherwise, the
contactor will be damaged.
In scalar control, the contactor can be opened with the drive running.
Relay output contacts and inductive loads
Inductive loads (such as relays, contactors, motors) cause voltage transients when
switched off.
The relay contacts of the RMIO board are protected with varistors (250 V) against
overvoltage peaks. In spite of this, it is highly recommended to equip inductive loads
with noise attenuating circuits (varistors, RC filters [AC] or diodes [DC]) in order to
minimize the EMC emission at switch-off. If not suppressed, the disturbances may
connect capacitively or inductively to other conductors in the control cable and form
a risk of malfunction in other parts of the system.
Install the protective component as close to the inductive load as possible. Do not
install the protective components at the terminal block.
24 V DC
230 V AC
230 V AC
Varistor
RC filter
Diode
RO (NC)
RO (C)
RO (NO)
RO (NC)
RO (C)
RO (NO)
RO (NC)
RO (C)
RO (NO)
Relay outputs
Summary of Contents for ACQ800 Series
Page 1: ...Hardware Manual ACQ800 37 Drives 55 to 450 kW 75 to 550 hp ACQ800 ...
Page 4: ......
Page 12: ...12 ACQ800 37 Hardware Manual Safety instructions ...
Page 24: ...24 ACQ800 37 Hardware Manual About this manual ...
Page 52: ...52 ACQ800 37 Hardware Manual Mechanical installation ...
Page 78: ...78 ACQ800 37 Hardware Manual Electrical installation ...
Page 84: ...84 ACQ800 37 Hardware Manual Motor control and I O board RMIO ...
Page 92: ...92 ACQ800 37 Hardware Manual Installation checklist and start up ...
Page 106: ...106 ACQ800 37 Hardware Manual Maintenance 3 4 5 6 8 7b 7a ...
Page 107: ...ACQ800 37 Hardware Manual 107 Maintenance 9 10 11 View from back ...
Page 123: ...ACQ800 37 Hardware Manual 123 Technical data Declaration of Conformity ...
Page 124: ...124 ACQ800 37 Hardware Manual Technical data ...
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