Grundfos CUE Series Service Instructions Manual
  1. Manuals
  2. Brands
  3. Grundfos Manuals
  4. DC Drives
  5. CUE Series
  6. Service instructions manual

Grundfos CUE Series Service Instructions Manual

Hide thumbs Also See for CUE Series:
Table of Contents

Advertisement

Quick Links

GRUNDFOS INSTRUCTIONS
CUE
Service instructions

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CUE Series and is the answer not in the manual?

Questions and answers

Related Manuals for Grundfos CUE Series

Summary of Contents for Grundfos CUE Series

  • Page 1 GRUNDFOS INSTRUCTIONS Service instructions...

  • Page 2: Table Of Contents

    4.6 Setting the type code 4.7 Fault finding using PC Tool E-Products 1.2 Notes Upgrading the firmware The symbols and notes below may appear in Grundfos Additional information installation and operating instructions, safety instructions and 6.1 Special service tools service instructions.

  • Page 3: About The Service Instructions

    If the fault cannot be remedied by means of these instructions, or you require technical assistance, contact Grundfos. If it has been proven that the fault is in CUE, contact Grundfos. Spare parts can be found in Grundfos Product Center, GPC or in GSK, Grundfos Service Knowledge.

  • Page 4: Type Identification

    2. Type identification 2.1 Nameplate CUE can be identified by means of the nameplate. Text Description CUE (product name). T/C (type code) 202P1M2T5E20H1BXCXXXSXXXXAXBXCXXXXDX T/C: CUE202P1M2T5E20H1BXCXXXSXXXXAXBXCXXXXDX T/C: CUE202P1M2T5E20H1BXCXXXSXXXXAXBXCXXXXDX Prod. no. Product number: 12345678 Prod. no: 12345678 Prod. no: 12345678 S/N: 123456G234 S/N: 123456G439 1.5 kW (400V) / 2 Hp (460V) 1.5 kW (400V) / 2 Hp (460V)

  • Page 5: Schematic Diagram

    2.3 Schematic diagram Supply Filter Ext. I/O, relays Sensors External control circuit Fig. 2 Schematic diagram 2.4 Terminals The physical position of the terminals depends on the enclosure of CUE. See the CUE installation and operating instructions. 2.4.1 Mains and motor connection The wires in the terminal box must be as short as possible.
  • Page 6 2.4.3 Connection of signal relays Terminal Function Common NO 1 NO 2 Normally open contact NC 1 NC 2 Normally closed contact Fig. 5 Terminals for signal relays in normal state (not activated) 2.4.4 Wiring diagram, MCB 114 Terminal Type Function +24 V out Supply to sensor...

  • Page 7: Fault Finding

    When CUE has been reset to factory setting, go through the startup guide. Contacting Grundfos State these pieces of information when you contact Grundfos to get help for fault finding: • nameplate data of the pump or system which CUE controls or is part of •...

  • Page 8: Fault Finding Using Alarm And Warning Codes

    Grundfos Service. • If the voltage is okay, check if there is minimum 4 mA or 1 V between terminals 54 and 55. If yes, contact Grundfos Service. 2. Sensor is defective or sensor cable is missing. If the cable is missing, or the sensor is defective, contact Grundfos Service.
  • Page 9 Re-establish the voltage supply to CUE according to the nameplate. If the fuses blow again or the alarm cannot be reset, contact Grundfos Service. • Check for unbalance between the phases by reducing the load. If the fault disappears by reducing the...
  • Page 10 Record the value of the following parameters and contact Grundfos: 15-40 FC Type 15-41 Power Section Hardware 15-42 Voltage Contact Grundfos Service. mismatch 15-43 Software Version 15-45 Actual Type code String 15-49 SW ID Control Card 15-50 SW ID Power Card...
  • Page 11 • Check that the option is properly installed. Internal fault • Check for loose or missing wiring. • Contact Grundfos Service. • Check the ribbon cable between the No feedback from the heat sink temperature sensor. power card and the gate drive card.
  • Page 12 • Check the parameter 1-86. parameter 4-13 Motor Speed High Limit [RPM]. AMA calibration The AMA does not work. Contact Grundfos Service. failed AMA check U The setting of motor voltage, motor current and Check the settings in parameters 1-20 to 1- and I motor power is presumably wrong.
  • Page 13 Remedy Type code The load and speed combination demands a motor Voltage limit Contact Grundfos Service. voltage higher than the actual DC link voltage. • Check that the ambient operating temperature is within the limits. Control Card Control card overtemperature: The cut-out •...
  • Page 14 Clock fault See parameter group 0-7. failed. Locked rotor The rotor is blocked. Contact Grundfos Service. Derag limit fault The deragging feature failed during execution. Check the pump impeller for blockage. The fan is not operating. The fan monitor checks...
  • Page 15 Alarm Description Cause Remedy Type code This alarm is only for multi-drive systems. It is equivalent to alarm 46, Power card supply. The report value in the alarm log indicates which drive module generated the alarm: Power card 1: Left drive module. Check the steps for alarm 46.
  • Page 16 • If the warning does not disappear, contact Grundfos Service. See section 4.4 Checking the intermediate voltage. The D-end motor bearing is too hot. The motor Clean the motor.
  • Page 17 Alarm Description Cause Remedy Type code Sensor 1 (terminal 54): The analog input signal has fallen below these control values for more than 500 ms: Type: 4-20 mA: Alarm under 2 mA (reset over 3 mA). Type: 2-10 V: Alarm under 1 V (reset over 1.5 V). The types 0-20 mA and 0-10 V are not monitored.
  • Page 18 1. Using PC Tool E-Products, check which warning or alarm if a low or high limit is exceeded. function is being monitored. The function can only be set by means of Grundfos Limit 2 2017 2. Check in the pump system whether the PC Tool E-Products.

  • Page 19: Checking The Mains Components

    Overload alarms 48/16 49/13 short - 200 % 55/59 Overload, current The pump is overloaded, but the alarm is not active yet. 48/9 - 110 % CUE, 1 minute - 100 % CUE, max. 55/12 Overload, torque 48/10 Overload, thermal motor <= I (nameplate)

  • Page 20: Checking The Rectifier, Static Test

    4.1 Checking the rectifier, static test Always carry out the static test of the rectifier after each repair. Before beginning the test: 1. Switch off the mains supply. 2. Remove the supply cable. 3. Set the multimeter to diode test. The position of the terminals DC+ and DC- differs from enclosure to enclosure.

  • Page 21: Checking The Igbts, Static Test

    Measurements Step 1 Step 2 Step 3 Step 4 Indication + = positive test pin - = negative test pin Measurements Step 1 Step 2 Step 3 Step 4 Indication + = positive test pin - = negative test pin 4.2 Checking the IGBTs, static test Always carry out the static test of the IGBTs after each repair.
  • Page 22 Measurements Step 1 Step 2 Step 3 Step 4 Indication + = positive test pin - = negative test pin Measurements Step 1 Step 2 Step 3 Step 4 Indication + = positive test pin - = negative test pin Measurements Step 1 Step 2...

  • Page 23: Checking The Igbts, Dynamic Test

    4.3 Checking the IGBTs, dynamic test Always carry out the dynamic test of the IGBTs after each repair. Before beginning the test: 1. Remove the motor cable. 2. Set the multimeter to 1000 VAC. 3. Switch on the mains supply. 4.

  • Page 24: Checking The Current Sensor

    4.5 Checking the current sensor A defective current sensor sometimes shows itself as an earth fault alarm which cannot be reset even when the motor cable has been disconnected. Testing the current sensor 1. Disconnect the motor cable from the terminals of CUE. 2.

  • Page 25: Fault Finding Using Pc Tool E-Products

    Connecting the computer to CUE using PC Tool Link A Grundfos PC Tool Link is used for the physical connection between the computer and CUE. It converts RS485 used by CUE into USB used by the PC. PC Tool Link also gives a galvanic separation between CUE and the computer.

  • Page 26: Upgrading The Firmware

    5. Upgrading the firmware The firmware package is downloaded from Grundfos Technical Information found on Insite under "Toolbox". 1. Go to Grundfos Insite and select "Toolbox". 2. Select "GTI - Grundfos Technical information". 3. Select "Service Support Tools". 4. Select the CUE firmware.
  • Page 27 Appendix 1. Alarm code 38 Internal fault In case of alarm code 38, an additional code can be read via PC Tool E-Products. Inform Grundfos Service for a detailed fault remedy. Alarm code Description The serial port cannot be initialized. Serious hardware failure.
  • Page 28 2. Block diagrams 2.1 Block diagram, enclosure B1 Fig. 1 Block diagram, enclosure B1...
  • Page 29 2.2 Block diagram, enclosure B2 Fig. 2 Block diagram, enclosure B2...
  • Page 30 2.3 Block diagram, enclosure B3 Fig. 3 Block diagram, enclosure B3...
  • Page 31 2.4 Block diagram, enclosure B4 Fig. 4 Block diagram, enclosure B4...
  • Page 32 2.5 Block diagram, enclosures C1 to C4 Fig. 5 Block diagram, enclosures C1 to C4...
  • Page 33 GRUNDFOS Pumps (Hong Kong) Ltd. Turkey Norway BOMBAS GRUNDFOS DO BRASIL Unit 1, Ground floor GRUNDFOS POMPA San. ve Tic. Ltd. Sti. Av. Humberto de Alencar Castelo Branco, Siu Wai Industrial Centre GRUNDFOS Pumper A/S Gebze Organize Sanayi Bölgesi 29-33 Wing Hong Street &...
  • Page 34 96765701 1019 ECM: 1272347 www.grundfos.com...

Table of Contents

Save PDF