Description
20
UM-PRORUNNER_mk9-2.0-EN
The movement of the carrier is restricted by the limit switches S10 and S11. When one of
the limit switches is triggered, the machine must stop and the mechanical locking device
must extend.
At each level two sensors are installed, by default B1 and B2 at bottom level and B3 and
B4 at top level. When the carrier is moving and one of the sensors is activated, the carrier
speed must be reduced to low speed. Once the second sensor is also activated, the
carrier must stop.
When the carrier is positioned at a certain level both sensors are activated. When a
product is placed on or removed from the carrier, the carrier can move due to the
elongation of the belts. This can be detected when one of the sensors becomes inactive.
To keep the carrier at the correct level, move the carrier in the direction of the inactive
sensor.
4.2.1
Connection unit
A
Connection unit
B
Additional connection unit
The sensors in the column are wired through
the cable tray in the column to the connection
unit in the drive section.
When the machine is configured to stop at
more than two levels, an additional connection
unit is installed (B).
4.3
Motor
The motor drives the movement of the carrier. It is necessary to control this motor with a
frequency inverter for controlled start/stop and optimum adjustment of the vertical speed.
EMC directives must be observed and the device should be installed in accordance with
the manufacturer specifications.
If a braking resistor has been connected, it might be necessary to change some
parameters of the frequency inverter. Please consult your frequency inverter supplier for
detailed instructions, because these changes depend on the inverter brand.
B
A
Note
When using a frequency inverter for hoisting applications, a braking resistor
must be installed in order to dispense the energy that is generated by the drive
motor when moving down. If there is no braking resistor, the energy causes too
high voltage inside the frequency inverter.