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Table of Contents
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Summary of Contents for GEA GSC TP
- Page 1 GSC TP Sequence Control for Packages Operating Manual (Translation of the original text) E_301510_2...
- Page 2 LEGAL NOTICE This documentation has been written in all con- science. However, the manufacturer cannot be held responsible, neither for any errors occurring in this documentation nor for their consequences. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
- Page 3 Hint! Stands for an important tip whose attention is important for the designa- ted use and function of the device. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
- Page 4 Operating Manual | Sequence Control for Packages GSC TP GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
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Page 5: Table Of Contents
Explanation of the parameters of sequence control options EXAMPLES FOR THE SEQUENCE CONTROL OF PACKAGES Conditions for capacity increase Conditions for capacity decrease Variable capacity demand - example 1 Variable capacity demand - example 2 GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... - Page 6 Operating Manual | Sequence Control for Packages GSC TP GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
- Page 7 Calculating the step time fig. 3 fig. 4 Conditions for capacity increase fig. 5 Conditions for capacity decrease fig. 6 Variable capacity demand - example 1 fig. 7 Variable capacity demand - example 2 GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
- Page 8 Operating Manual | Sequence Control for Packages GSC TP GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
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Page 9: Parameters
Load pulse secs Pulse time for capacity increase. Unload pulse secs Pulse time for capacity decrease. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 10: Fig. 1 Hysteresis, Neutral Zone
Neutral zone Hysteresis Time characteristic of process value Time characteristic of the 3-step-controller outputs Time characteristic of the pulse generator Time character of the pulsed outputs to the capacity control solenoid valves GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 11: Reciprocating Compressor Capacity Control
Hint! The minimum step time between capacity steps is always 15 seconds. The way the step time is calculated illustrated by example in the following diagram. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 12: Explanation Of The Parameters Of Sequence Control Options
For screw compressors with Vi, the value for the part-load should be set not higher than 70%. Compressor must be able to reach this capacity, sequence control Maximum may force compressor towards maximum and to hold this capacity. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... - Page 13 Used to start and stop compressors in sequence, must be larger Neutral zone than local control neutral zone (see 1.1). The value refers to the combination of active cylinder or the control slide position and speed of compressor drive motor. GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
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Page 14: Examples For The Sequence Control Of Packages
Important information about the diagrams fig.3 "Control" Reference to the explanation of the parameters in Chapter 1.1 (Local control) "Sequence" Reference to the explanation of the parameters in Chapter 1.2 (Sequence options) GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 15: Conditions For Capacity Increase
Operating Manual | Sequence Control for Packages Examples for the sequence control of Packages GSC TP Conditions for capacity increase fig.4: Conditions for capacity increase GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 16: Conditions For Capacity Decrease
Examples for the sequence control of Packages Operating Manual | Sequence Control for Packages GSC TP Conditions for capacity decrease fig.5: Conditions for capacity decrease GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 17: Variable Capacity Demand - Example
Operating Manual | Sequence Control for Packages Examples for the sequence control of Packages GSC TP Variable capacity demand - example 1 fig.6: Variable capacity demand - example 1 GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... -
Page 18: Variable Capacity Demand - Example 2
Examples for the sequence control of Packages Operating Manual | Sequence Control for Packages GSC TP Variable capacity demand - example 2 fig.7: Variable capacity demand - example 2 GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014... - Page 19 Operating Manual | Sequence Control for Packages Examples for the sequence control of Packages GSC TP GEA Refrigeration Germany GmbH | E_301510_2 | Generated 17.12.2014...
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