PRODUCT INFORMATION
LIQUID CHILLER GRASSO DX R
200 ... 1600
_601011_pi_dxr_gbr_1_.doc
35
10 MODULAR
CONTROL
Type :
Grasso System Control
General
fig. 11: Display of the Grasso System Conrol (GSC)
Programmed control, that is adapted to specific requirements of Packages and Chillers.
The number of analogue and binary inputs and outputs is adapted the demand by selecting the appropriate
components.
Programming is carried out using defined and tested software modules that the contents of this documentation
and the enclosed drawings, sketches and diagrams are intended only for plant users and operating personnel.
Any changes in software modules are principally
not
allowed.
Package and Chiller control organization:
1.
Ensuring unit/chiller safety by monitoring of pressure and temperatures.
2.
Running a fail-safe startup and shutdown routine.
3.
Screw compressor capacity control, either manually or automatically.
4.
Automatic refrigerant injection into the evaporator (for chillers DX Series only).
Technical data
Model type:
Standard housing with an engineered modular Grasso configuration and a standard
terminal.
Power supply:
115/ 230 V AC, 50/ 60 Hz
Control and display unit:
Controls are installed in the door of the housing and labelled.
The terminal has a 4-line text display.
All analogue process data are displayed at the terminal.
Texts can be displayed in various languages.
Parameterization:
Process parameters are parameterized, after having entered a password, from the
controls at the terminal to adapt the controller to the process.
Behaviour after power
return:
Return to the state prior to power failure.
Elapsed-time meter:
Available software function.
Summary of Contents for Grasso DX RR 200
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