- Screw unit electrical control cabinet
General configuration:
The following are the dimensions of the electric control cabinet of our conventional screw unit (horizontal cabinet, double
door) for customers” reference when making the unit frame type. The dimensions of the box for paired machines refer to two
parallel units. For special needs, please contact the application technology department of our factory.
Default configuration of the electric control cabinet: PLC (Siemens), touch screen (Kunlun state), motor protector (NEW
FOCUS, compressor running three-phase current display, phase loss, overload protection, fault current lock), analog acquisi
tion module (NEWFOCUS, temperature, pressure signal acquisition module), pressure sensor (NS), temperature sensor
(NTC10K), AC contactor, thermal relay, intermediate relay (Schneider), plastic case (Chint/LS) if the customer uses a full
liquid type or barrel pump for liquid supply, explanation and communication are required when ordering. For special needs,
please contact the application technology department of our factory.Analog quantity collection, display and control: suction temperature, antifreeze temperature, oil temperature, pipeline oil
temperature, exhaust temperature: compressor lubricating oil temperature; compressor exhaust temperature (optional.
according to system needs); pipeline oil temperature (optional, according to system needs) *Switch value protection: Cool
ing water cutoff protection; Refrigeration cutoff protection: Compressor oil pressure difference protection: Compressor oil
flow switch protection: Compressor high voltage pressure control protection: Compressor low pressure pressure control
protection; Compressor oil level protection; Compressor module protection; Compressor overload protection; External
refrigeration signal (normally open); External chain fault (system normally open and normally closed can be set); Phase
sequence protection; Emergency stop; Compressor phase loss, overload; Fan overload/water pump overload; Refrigeration
pump overload. *Output control points: compressor loading and unloading solenoid valve: compressor start (direct start, star
delta or split coil start); refrigeration liquid line solenoid valve (according to the system); economizer solenoid valve (accord
ing to the system); oil cooling bypass solenoid valve (heating or cooling according to the system requirements); condensation
fan, condensate water pump; fault alarm output; oil heating. * Direct power supply points: compressor module power supply;
oil pressure power supply; oil return solenoid valve.
- Compressor rated power and factory set protection current.
- The electrical control cabinet of the parent divided int.
- Single screw condensing compressor unit electrical control cabinet.
- Electric control cabinet for two parallel screw condensing compressor
units. - Three parallel screw condensing compressor unit electrical control cabinet.
- Four parallel screw condensing compressor unit electrical control cabinet.
- Five parallel screw condensing compressor unit electrical control cabinet.
- Two-stage machine, equipped with screw condensing compressor unit and electric control cabinet (mostly for low-temperature quick freezing).
Standard configuration with touch screen remote access function, computerised centralised monitoring.
Please note when ordering. It will involve an increase in the order price.
