Group Drive; Speed Sensor Connection; Connection Of A Brake Resistor - BONFIGLIOLI Act 201 Operating Instructions Manual

5.4.3.4
For a group drive (several motors at one frequency inverter) the total length must be
shared in the number of motors according to the table values. A group drive with
synchronous servomotors is not possible.
Use a thermocouple for monitoring (for example PTC resistor) at each motor to avoid
damage.
5.4.3.5
Install the speed sensor lines physically separate from the motor cables. Comply with
the manufacturer's data of the speed sensor.
Install the shielding near to the frequency inverter and keep the speed sensor lines as
short as possible.
5.4.4
The connection of a brake resistor is done via terminal X2.
Danger!
•
•
Caution!
Note:
38
38

Group drive

Speed sensor connection

Connection of a Brake Resistor

Switch off power supply before connecting or disconnecting the brake
resistor cables. Dangerous voltage may be present at the motor terminals
and the terminals of the brake resistor even after the frequency inverter
has been disconnected safely from power supply. Wait for some minutes
until the DC link capacitors have discharged before starting to work at the
unit.
The unit may only be connected with the power supply switched off.
Make sure that the frequency inverter is discharged.
The brake resistor must be equipped with a temperature switch. The tem-
perature switch must disconnect the frequency inverter from mains supply
if the brake resistor is overloaded.
Rb1
T1
Keep the brake resistor lines as short as possible.
Operating Instructions ACTIVE
Operating Instructions ACTIVE
X2
Rb1 Rb2
L1 L2 L3
K1
R
b
Rb2
X1
T2
K1
06/07
06/07