KGL Operating Manual – VS 3010 BS
2018-07-02
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1.
2.
3.
t0 OFF Comp. Z1 and t0 OFF Comp. Z2
- t0 threshold for compressor disable in Z1 and Z2
The t0 threshold must be greater than the manually set value on the LP cutout.
Incorrect parametrisation can result in high impairments of the function.
5.4 Start-up of speed-controlled condenser fans / compressors
For the control of speed-regulated fans or compressors, a frequency converter (referred to as FC in the
following) or speed controller is required in addition to the controller. Various other measures, particularly for
interference suppression of the system, are required for the cabling of a system with FCs / speed controllers:
All inputs and outputs of low-voltage signals of the controller must be contacted using shielded
cables. Correct design of this shielding is particularly important for systems with FCs / speed
controllers. In the case of inadequate shielding, high impairments of the measured values can
occur due to the high interference emission of FCs / speed controllers.
Care must be taken with all analogue inputs and outputs that there is no connection between
the sensor cables and the signal ground or shielding.
Analogue inputs and outputs are sensitive to external supply and reverse polarity! When
connecting the pack controller to the control input of the FC /speed controller, the correct
polarity
ensured. FCs / speed controllers also frequently provide a power
must be strictly
supply for sensors or potentiometers, using which the speed can be specified.
This supply must
be connected to any analogue output of the controller. In the event of
never
incorrect connection between the controller and the FC / speed controller, components in the
controller can be permanently damaged.
5.4.1 Procedure for the start-up of a system
Compliance with safety measures: The following circuit diagrams are simplified diagrams from the VS
3010 BS to the FC (using the example of the smd series from Lenze) and to the speed controller
(using the example of the ADR series from Micro Nova).
Detailed safety measures (e.g. interlocks) are not shown in the simplified diagrams and must
strictly
be taken into account for the installation.
The following signals from the pack controller are available for the correct control of the FC / speed controller:
1. Enable FC / speed controller
Z1: In the case of compressor combined control, the Z1 frequency converter is enabled via the relay output for
compressor 1 (terminals 13/14).
In the case of combined compressor control, the Z2 frequency converter is enabled via the relay output for
Z2:
compressor (x+1) (x = number of Z1 compressor stages).