PRODUCT INFORMATION. EFC / EFCe. EFC / EFCe. Extension of production programme Electronic Frequency Control systems
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1 Extension of production programme Electronic Frequency Control systems 1
2 The systems Electronic Frequency Control Continuously variable speed control using frequency converter technology The EFC-System is optionally available for all Pluscom compressors HG(HA)12P, 22P, 34P. NEW: EFCe-systems are optionally available for the compressors of the series HG4 bis HG8. With the EFC system Bock offers the most efficient means of adapting the capacity of the compressor to current refrigeration plant requirements: Progressively adjustable speed control using frequency converter technology. Up to 25 % less power consumption! EFC-systems are compactly mounted on the compressor, wired and connected ready for use. It is activated by a pressure transducer mounted on the suction side. The adjustment range can be set individually. EFCe systems are also optimally adjusted to the compressor at the factory and programmed with the necessary control settings. Due to their size, however, they are not directly on the compressor but are instead intended to be set up individually. The device is controlled via a pressure sensor arranged on the intake side, or via an external control signal. The trigger for the system (start/stop) is via a pump down pressostat. The control range can be adjusted on an individual basis. The device is designed for mounting on the wall or switch cabinet. Thanks to the oil pump lubrication all Bock compressors are ideal for speed control, in particular also for low frequencies. Versions EFC/EFCe Electronic Frequency Control Continuouslyvariable speed control for Bock compressors For single compressors For duplex-compressors EFC EFCe EFC EFCe For compressor racks (max. 4 compressors) HG(HA)12P: EFC 2.2 HG(HA)22P: EFC 4.0 HG(HA)34P: EFC 7.5 with pressure transducer control signal 4-20 ma HG4: EFCe 11, 15, 18.5 HG5: EFCe 15, 18.5, 30 HG6: EFCe 30, 37 HG7: EFCe 45, 55, 75 HG8: EFCe 90 with pressure transducer control signal 4-20 ma DHG(DHA)12P: EFC 2.2 DHG(DHA)22P: EFC 4.0 DHG(DHA)34P: EFC 7.5 with pressure transducer control signal 4-20 ma DHG4:EFCe 11, 15, 18.5 DHG5:EFCe 15, 18.5, 30 DHG6:EFCe 30, 37 DHG7:EFCe 45, 55, 75 DHG8:EFCe 90 with pressure transducer control signal 4-20 ma HG(HA)12P: EFC Rack HG(HA)22P: EFC Rack HG(HA)34P: EFC Rack -Control signal 0-10V with pressure transducer -with ERC4 rack control for installation in the switch cabinet 1) Possible configurations : -External control signal 4-20 ma without pressure transducer -External control signal 0-10 V without pressure transducer 1) Only possible ex-works! Electronic ERCRack Control Principal regulating and control device for each compressor of the rack 2
3 At a glance The advantages: Set for immediate connection on delivery and optimally prefed with data for the relevant compressor Fully variable adjustment of the refrigerating capacity on demand No high energy, high-wear start/stop operation Up to 25% less power consumption Reduced mechanical compressor load for longer service life Always optimum machine pressures and operating conditions Lower pressure losses in the heat exchangers Lower cooling down and heating up losses throughout the system Reduced start-up current at full torque Start-up current with and without EFC/EFCe Engine performance factor (cos ϕ) with and without EFC/EFCe Further advantages of the EFC system: Already wired for immediate connection and compactly mounted on the compressor No additional wiring required Takes up no space in the switchboard Part windings and star-delta circuits no longer required Needs no screened supply lines to the compressor Control module also included for simple adjustment of the EFC-System With the auxiliary module ERC4 also suitable for racks COP behaviour with EFC/EFCe Further advantages of the EFCe system: No power contactor and/or soft start necessary on the EFCe to trigger controlled compressors Easy adjustment of the EFCe system by means of full graphic display (operating unit) EFCe system fulfils the requirements of safety category 3 in EN (safe stopp function) Start/stop behaviour with and without EFC/EFCe Capacity control in rack operation (4 compressors / of which 1 compressor with EFC) 3
4 Type key Electronic Frequency Control Installation variant 1) Capacity 2) Software 3) EFC e 15,0 / A1 1) Set-up variant e = for individual external installation (not mounted on the compressor) 2) Capacity 2,2 = 2,2 kw for HG(HA)12P 4,0 = 4,0 kw for HG(HA)22P 7,5 = 7,5 kw for HG(HA)34P 11.0 = 11.0 kw for HG4/ = 15.0 kw for HG4/ 465-4S, 555-4, and HG5/ 725-4, = 18.5 kw for HG4/ 555-4S, 650-4S, and HG5/ 725-4S, = 30.0 kw for HG5/ 830-4S, 945-4S, and HG6/ , S, , = 37.0 kw for HG6/ S, S 45.0 = 45.0 kw for HG7/ , S, = 55.0 kw for HG7/ S, = 75.0 kw for HG7/ S 90.0 = 90.0 kw for HG8/ S, , S, , S 3) Software A1 = control signal 4-20 ma with pressure transducer A2 = control signal 4-20 ma external (without pressure transducer) A3 = control signal 0-10V external (without pressure transducer) A4 = for duplex compressors, control signal 4-20 ma with pressure transducer A5 = for duplex compressors, control signal 4-20 ma external (without pressure transducer) A6 = for duplex compressors, control signal 1-10V external (without pressure transducer) A7 = for compressor racks (2 to 4 compressors), control signal 1-10V with pressure transducer including Electronic Rack Control (ERC) only EFC 4
5 Calculating the maximum possible frequency of the compressor under specific operating conditions: The following calculation is used to obtain the maximum possible frequency at the selected operating point: f max = f max P max x 50 Hz P e = maximum permissible frequency [Hz] Calculating the corresponding refrigerating capacity: Refrigeration capacity can be determined as a function of frequency from the following calculation:.. f operation x Q Q 0 50Hz o operation = 50 Hz. Q o operation = refrigerating capacity at the chosen operating point [W] P max P e f operation. Q o 50 Hz = frequency at the chosen operating point [Hz] = refrigerating capacity at the operating point at 50 Hz [W] (see performance data, compressors) Notes: As a rule, the maximum permissible power consumption of the compressor P max must not be exceeded. The maximum permissible frequency is always restricted in case of high evaporation temperatures associated with high condensing pressures with refrigerants R404A, R507, R407C, R22,... At the compressors HG12P/110-4 S, HG22P/190-4 S and HG34P/380-4 S you have to reduce the performance by about 5 Hz. Technical data EFC Unit designation EFC 2,2 EFC 4,0 EFC 7,5 Compressor models HG(HA)12P HG(HA)22P HG(HA)34P Protection IP 65 IP 54 IP 54 Max. output current under continuous load 6 A 9,5 A 19 A Max. output power 2,2 kw 4 kw 7,5 kw Input Output AC 400/500 V -3- PE 50/60 Hz 5,5/4,5 A 12,3/9,8 A 21,5/17,3 A AC 0-400/500 V -3- PE Hz Permissible control range Hz Hz Hz EFCe = maximum power consumption [kw] (see technical data, compressors) = power consumption at the operating point at 50 Hz [kw] (see performance data, compressors) Unit designation EFCe 11 EFCe 15 EFCe 18,5 EFCe 30 EFCe 37 EFCe 45 EFCe 55 EFCe 75 EFCe 90 Compressor models HG4/465-4 HG4/465-4S, HG4/555-4, HG4/650-4 HG5/725-4, HG5/830-4 HG4/555-4S, HG4/650-4S, HG5/725-4S, HG5/945-4 HG5/830-4S, HG5/945-4S, HG6/1080-4, HG6/1080-4S, HG6/1240-4, HG6/ HG6/1260-4S, HG6/1410-4S HG7/1620-4, HG7/1620-4S, HG7/ HG7/1860-4S, HG7/ HG7/ S HG8/2470-4S, HG8/2830-4, HG8/2830-4S, HG8/3230-4, HG8/3220-4S Protection IP 54 Max. output current under continuous load 24 A 32 A 37,5 A 61 A 73 A 90 A 106 A 147 A 177 A Max. output power 11 kw 15 kw 18,5 kw 30 kw 37 kw 45 kw 55 kw 75 kw 90 kw Input AC 380/500V (+/- 10%) 3-PE 50/60 Hz Output Permissible control range 1) AC 0-380/500V 3-PE Hz Hz Weight 23 kg 27 kg 45 kg 65 kg 104 kg 1) The specified control ranges may vary depending on the operating condition and system structure. 5
6 Dimensions Dimensional variations with the EFC system ca.455 (485) ca.480 (510) ca.480 (510) HG(HA)12P HG(HA)22P HG(HA)34P Dimensions in ( ) = HA version Dimensions in mm EFCe systems EFCe 11 EFCe 15 EFCe 18,5 EFCe 11 EFCe 15 EFCe 18,5 Dimensions in mm EFCe systems EFCe 30 EFCe 37 EFCe 45 EFCe EFCe EFCe Dimensions in mm 6
7 EFCe systems EFCe 55 EFCe 75 EFCe 90 EFCe 55 EFCe 75 EFCe 90 Dimensions in mm Scope of supply EFC Basic equipment with intermediate adapter mounted on compressor terminal box, programmed and assembled ready for operation EFC 2,2 für HG(HA)12P EFC 4,0 für HG(HA)22P EFC 7,5 für HG(HA)34P Pressure transducer for suction pressure based speed control (Configuration based on design required) For possible designs see page 2 Incl. engine monitoring Programming and reaout hand-held terminal with connecting cable Scope of supply EFCe Basic device with full graphic display and pre-programmed with basic settings for the corresponding compressor Pressure sensor for suction-pressure-dependent speed control (extra item) Accessories for wall mounting the EFCe Bock relay and terminal module 7
8 Bock Kältemaschinen GmbH Benzstraße 7 D Frickenhausen Telefon Telefax mail@bock.de Art.Nr Gb Subject to change without notice 8
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