FlexLink Spiral Elevator - Manual (Page 41)

Mounting, installation, adjustment
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Page 35 of 68 5478EN-3
5.4 Integration in a (transport) system
The Spiral Elevator is a machine that is integrated in a system of
conveyors. This means that an input and output are to be connected to it.
If the Spiral Elevator is to be fitted into an existing situation, this usually
gives more problems with the installation than in a completely new
situation.
5.4.1 Frequency control
The operating conditions are optimal when the speed of the Spiral Elevator
is equal to the speeds of the in-feed and out-feed conveyors or machines.
If a speed difference does exist this can lead to product twisting at the
transfers and wear of the high friction conveyor plates.
If there are speed differences which are unavoidable, these should be kept
bellow 15% and the preferred arrangement is as follows:
• Spiral Elevator up to 15% faster than in-feed conveyor or machine
speed.
• Out-feed conveyor or machine speed to be up to 15% faster than
Spiral Elevator.
The speeds can be tuned by using a frequency controller within the control
system if desired.
If a frequency controller is used for the speed control, ramp-up and ramp-
down settings should be set such that the Spiral Elevator chain does not
'snatch' or 'jerk' on starting or stopping.
.
Note! For the correct setting of the frequency controller the
technical specification supplied with the unit should be followed.