VDH MC3-SC, Руководство пользователя

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MC3-SC Stepped Controller
Document no.: 140744 version 1.3
Page 4 of 45
1 Functional specifications
The MC 3-SC is an 8-level stepper controller than can regulate a maximum of 8 compressors and 8
condenser fans up and down, based on the measured suction and discharge pressures and the
active setpoints.
There are two options for regulating up and down using the controller:
Compressor regulation: On/off switching
With of without valve lift (multi-stage compressor) or
frequency controlled.
Condenser regulation: On/off switching or frequency-controlled.
The controller can also decide which compressor or condenser should be switched on or off,
depending on the total number of operating hours, or based on capacity.
Compressors and condensers can also be removed from the controller, e.g. for maintenance or
faults.
Minimum and maximum pressure alerts, minimum and maximum pressure faults, minimum and
maximum temperature alerts and minimum and maximum temperature faults can be set for
monitoring the controller.
All the settings and operating options can be set to require a password for authorization.