ECKELMANN VS 3015 CT, Инструкция по эксплуатации, Страница: 39 / 219

Firmware V1.41 V1 08.11.2022 39/219
activated on the speed controller following expiry of the cycle time or when all compressors are idle via a relay
output of the controller according to the following sequence.
Base load rotation with 2 running compressors (C1 + C2) Base load rotation with 1 running compressor (C1 or C2)
Reduce speed to minimum value
Disconnect compressor from the mains power supply
Reduce speed to 0 Reduce speed to 0
Switch off speed controlled compressor Switch off speed controlled compressor
3 seconds delay 3 seconds delay
Base load rotation Base load rotation
3 seconds delay 3 seconds delay
Switch on compressor at the mains power supply
Switch on speed controlled compressor Switch on speed controlled compressor
Increase input signal (0..10 V) by 2 V / sec until the speed before
switching is reached. Increase input signal (0..10 V) by 2 V / sec until the speed before
switching is reached.
If the cycle time for the base load rotation is specified as "—", no rotation is performed, even if all compressors
are idle. If the cycle time is set to "—", the status of the relay output ("Switching of FC compressor") for the
base load rotation retains the status it received at the time of the data input even in the event of a power failure.
If there is any fault (motor overload cut-out or oil pressure switch) for the speed-controlled compressor (C1 or
C2), any base load rotation is only performed once on the still available fixed-speed compressors. No base load
rotation is performed if the compressor with the fault is on the mains power supply.
Fault on Base load rotation output Perform base load rotation
Compressor 1 ON NO
OFF YES
Compressor 2 ON YES
OFF NO
The relay output 9 (terminals 1/2) is used for the switching of the FC compressor.
5.4.6 Load shedding
In order to prevent any defined energy consumption being exceeded, it may be necessary to initiate a forced
shutdown of consumers. The digital input 19 (terminals 86/87) is provided in the pack controller for load
shedding. The unloading of compressors is immediate after setting the input.
For single-stage compressors, a compressor is switched off by the load shedding input. For capacity-controlled
compressors, one capacity stage of a compressor is switched off by the load shedding input. If a capacity-
controlled compressor should be completely unloaded via a load shedding input, the parameter
Verd.mLabw.AUS (menu 3-1) must be set to “Y”. This parameter is only displayed for capacity-controlled
compressors. Refer to the following table for the effect of the digital load shedding input:
Number of disabled stages
Number of activated load
shedding inputs Parameter Verd.mLabw.AUS set to
"N" Parameter Verd.mLabw.AUS set to "Y"
2 stages per compressor 3 stages per compressor
None 0 0 0
1 1 2 3