KGL Operating Manual – VS 3010 BS
2018-07-02
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In the case of a negative control error, the speed of all loaded fans is reduced to the minimum speed + 20%. If
the pressure value continues to remain below the setpoint, fan stages are unloaded at intervals. Switching
back from operation by power supply to normal operation is not performed until the tc setpoint has been
undercut. Finally, the speed controller is disabled via the first fan output S1 of the pack controller when the
speed has reduced to 0. If a minimum speed > 0 of the speed controller has been input using the parameter
Min. Fan speed (menu 3-3-1), the speed is reduced after a configurable time (parameter basetime OFF Fan 1
menu 3-2-2-2) and the fan output S1 is switched off.
Enable fan stages (parameter Enab.Cond. screen 3-1)
The enabling of the fan stages is directly assigned to the fan relay stages. Using a disable of the fan stage 1,
the speed controller with the connected fans can thus be disabled. If the first stage is disabled, the fan control
operates as a step controller with the steps 2 to n-1.
The following maximum numbers of stages can be disabled or enabled:
Base module: 3 fan stages
Configuration with one SIOX extension module: 7 fan stages
The stage No. cond. 1 cannot be configured for operation by power supply. It is not displayed on the
operator terminal, the store computer and in the LDSWin PC software.
4.5.8 Control algorithm for combined control - stages type of control
The fan regulation is performed using a fan that is controlled by a speed controller. Other stages connected to
the mains power supply can be loaded or unloaded individually.
Depending on the expansion stage of the controller, the following numbers of fan stages can be controlled for
the regulation:
Controller in the base module: 3 fan stages
Configuration with one SIOX extension module: 7 fan stages
With fan combined control, the possible fan configuration, depending on the expansion stage, is accordingly
one fan less than with step control. This is due to the fact that the fan output after the last configured fan output
(No.Cond.Stages XX, menu 3-1) is used for the switching to the operation by power supply: