Grundfos CRE Installation And Operating Instructions Manual
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Summary of Contents for Grundfos CRE
- Page 1 GRUNDFOS INSTRUCTIONS CRE, CRIE, CRNE CRKE, SPKE, MTRE, CHIE 1 & 3 phase Installation and operating instructions...
- Page 2 Grundfos or an authorized service station for instructions. Any defective product to be returned to Grundfos or a service station must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be included if so instructed.
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Page 3: Table Of Contents
CONTENTS 6.3.4 Selection of fault, operating or ready signal relay 6.3.5 Blocking of the buttons on the pump Page 6.3.6 Allocation of pump number Symbols used in this document 6.3.7 Selection of function for digital input General 6.3.8 Setting of stop function 6.3.9 Setting of sensor Installation 6.3.10 Duty/standby... -
Page 4: General
2. General Grundfos E-pumps are pumps fitted with frequency-controlled standard motors for single-phase or three-phase mains connection. Pumps without factory-fitted sensor: The pumps have a built- in PI controller and can be connected to an external sensor enabling control of for instance pressure, differential pressure, temperature, differential temperature or flow in the system in which the pumps are installed. -
Page 5: Additional Protection
3.3.3 Additional protection If the supply cable is damaged, it must be If the pump is connected to an electric installation where an earth replaced by the manufacturer, the manufacturer's leakage circuit breaker is used as additional protection, this service partner or similarly qualified persons in circuit breaker must be marked with the following symbol: order to avoid a hazard. -
Page 6: Electrical Connection - Three-Phase Pumps, 0.75-7.5 Kw
3.5.2 Protection against electric shock – indirect contact The pump must be earthed and protected against indirect contact in accordance with national regulations. NC C NO N PE L Protective earth conductors must always have a yellow/green (PE) or yellow/green/blue (PEN) colour marking. As the leakage current of 4 kW to 7.5 kW motors is >... -
Page 7: Overvoltage Protection
3.6 Other connections 3.5.5 Overvoltage protection The pump is overvoltage-protected through built-in varistors The connection terminals of external potential-free contacts for between the phases and between phases and earth. start/stop and digital function, external setpoint signal, sensor signal, GENIbus and relay signal are shown in fig. 8. 3.5.6 Supply voltage If no external on/off switch is connected, short- 3 x 380-480 V +-10 %, 50/60 Hz, PE. -
Page 8: Electrical Connection - Three-Phase Pumps, 11-22 Kw
3.7 Electrical connection – three-phase pumps, The leakage current of the motor can be found in section 14.2 Leakage current. 11-22 kW 3.7.4 Motor protection The user or the installer is responsible for the The pump requires no external motor protection. The motor installation of the correct earthing and protection incorporates thermal protection against slow overloading and according to valid national and local standards. -
Page 9: Other Connections
3.8 Other connections 3.9 Signal cables The connection terminals of external potential-free contacts for • Use screened cables having a cross-sectional area of min. start/stop and digital function, external setpoint signal, sensor 0.5 mm² and max. 1.5 mm² for external on/off switch, digital signal, GENIbus and relay signal are shown in fig. -
Page 10: Setting The Pump
4. Setting the pump The remote control R100 offers additional possibilities of setting and status displays, see section 6. Setting by means of R100. 4.1 Pumps without factory-fitted sensor 4.3 Factory setting The pumps have been factory-set to uncontrolled operation. Pumps without factory-fitted sensor: The pumps have been In uncontrolled-operation mode, the pump will operate factory-set to uncontrolled operation. -
Page 11: Setpoint Setting
21. 6. Setting by means of R100 The pump is designed for wireless communication with the Grundfos remote control R100. Fig. 21 Pump performance setting, uncontrolled-operation mode 5.2 Setting to max. curve duty Fig. - Page 12 0. GENERAL 1. OPERATION 1. OPERATION 2. STATUS 3. INSTALLATION 5.1.1 5.2.1 5.3.1 5.1.2 5.2.2 5.3.2 5.1.3 5.2.3 5.3.3 5.2.4 5.3.4 5.1.4 5.2.5 5.3.5 5.2.6 5.3.6 5.3.7 5.3.8 5.3.9 5.3.10 Only three-phase pumps up to 7.5 kW 5.3.11 Fig. 25 Menu overview...
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Page 13: Menu Operation
Displays in general 6.1.3 Fault indications In the explanation of the functions, one or two displays are shown. One display: Pumps without or with factory-fitted sensor have the same function. Two displays: Pumps without or with factory-fitted sensor have different If the pump is faulty, the cause will appear in this display. -
Page 14: Display Of Actual Setpoint
6.2.1 Display of actual setpoint Tolerance: ±10 % This display shows the actual pump input power from the mains supply. The power is displayed in W or kW. Without sensor With pressure sensor The pump power consumption can also be read from this display. The value of power consumption is an accumulated value calculated from the pump’s birth and it cannot be reset. -
Page 15: Selection Of External Setpoint Signal
Setting the PI controller: 6.3.3 Selection of external setpoint signal For most applications, the factory setting of the controller constants K and T will ensure optimum pump operation. In the following cases, a change of the setting can be useful or necessary. -
Page 16: Selection Of Function For Digital Input
6.3.7 Selection of function for digital input 1. The pump will check the flow regularly by reducing the speed for a short time, thus checking the change in pressure. If there is no or a small change in pressure, the pump will detect a low flow. -
Page 17: Setting Of Sensor
6.3.9 Setting of sensor 6.3.11 Setting of min. and max. curves Without sensor With pressure sensor The operating range can be changed as follows: • The max. curve can be adjusted within the range from maximum performance (100 %) to min. curve. The setting of the sensor is only carried out in the case of •... -
Page 18: Digital Input
7.2 Digital input Actual setpoint By means of the R100, one of the following functions can be selected for the digital input: Upper value of • Min. curve. sensor measuring range • Max. curve. Setpoint set on pump • External fault. or with the R100 •... -
Page 19: Bus Signal
9. Bus signal The pump enables serial communication via an RS-485 input. The communication is carried out according to the Grundfos bus protocol, GENIbus protocol, and enables connection to a building management system or another external control system. Via the bus signal, it is possible to remote-set pump operating parameters, like setpoint, operating mode, etc. -
Page 20: Indicator Lights And Signal Relay
11. Indicator lights and signal relay The pump incorporates an output for a potential-free signal via an internal relay. The operating condition of the pump is indicated by the green and The signal output can be set to fault, operating or ready indication red indicator lights on the pump control panel, fig. -
Page 21: Megging
13.1 Supply voltage Bus input 1 x 200-240 V ±10 %, 50/60 Hz, PE. Grundfos bus protocol, GENIbus protocol, RS-485. Cable: 0.5 - 1.5 mm² / 14-12 AWG. Screened 3-core cable: 0.5 - 1.5 mm² / 28-16 AWG. Maximum cable length: 500 m. -
Page 22: Inputs/Output
Bus input = 250 Ω. DC 0-20 mA/4-20 mA, R Grundfos bus protocol, GENIbus protocol, RS-485. Tolerance: +0 %/–3 % at maximum current signal. Screened 3-core cable: 0.5 - 1.5 mm² / 28-16 AWG. Screened cable: 0.5 - 1.5 mm². -
Page 23: Other Technical Data
During storage/transport: –30 ° C to +60 ° C. environmentally sound way: Relative air humidity 1. Use the public or private waste collection service. Maximum 95 %. 2. If this is not possible, contact the nearest Grundfos company or service workshop. Sound pressure level Single-phase pumps: <70 dB(A). - Page 24 25 A / Inverse time Bussmann NOS* 40 A 40 A / Inverse time Bussmann NOS* Line reactors are normally not required for use with 3-phase Grundfos MLE and MGE motors. – 40 A 40 A / Inverse time Bussmann NOS*...
- Page 27 U.S.A. Canada México GRUNDFOS Pumps Corporation GRUNDFOS Canada Inc. Bombas GRUNDFOS de México S.A. de C.V. 17100 West 118th Terrace 2941 Brighton Road Boulevard TLC No. 15 Olathe, Kansas 66061 Oakville, Ontario Parque Industrial Stiva Phone: +1-913-227-3400 L6H 6C9 Aeropuerto...
- Page 28 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence L-MLE-TL-02 4/07 Repl. L-MLE-TL-02 8/04 www.grundfos.com...
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