A3GZ50-AB02-35 Operating instructions ebm-papst Mulfingen GmbH & Co. KG Bachmühle 2 D-74673 Mulfingen Phone +49 (0) 7938 81-0 Fax +49 (0) 7938 81-110 [email protected] www.ebmpapst.com 1. SAFETY REGULATIONS AND NOTES Please read these operating instructions carefully before starting to work with the device. Observe the following warnings to prevent malfunctions or physical damage to both property and people. These operating instructions are to be regarded as part of this device. If the device is sold or transferred, the operating instructions must accompany it. These operating instructions may be duplicated and forwarded for information about potential dangers and their prevention. Translation of the original operating instructions CONTENTS 1. SAFETY REGULATIONS AND NOTES 1 1.1 Levels of hazard warnings 1 1.2 Staff qualification 1 1.3 Basic safety rules 1 1.4 Electrical voltage 1 1.5 Safety and protective functions 2 1.6 Electromagnetic radiation 2 1.7 Mechanical movement 2 1.8 Emission 2 1.9 Hot surface 2 1.10 Transport 2 1.11 Storage 2 1.12 Disposal 3 2. PROPER USE 3 3. TECHNICAL DATA 4 3.1 Product drawing 4 3.2 Nominal data 5 3.3 Data according to ErP directive 5 3.4 Technical features 5 3.5 Mounting data 5 3.6 Transport and storage conditions 5 4. CONNECTION AND START-UP 6 4.1 Connecting the mechanical system 6 4.2 Connecting the electrical system 6 4.3 Connection in terminal box 7 4.4 Factory settings 8 4.5 Connection screen 9 4.6 Checking the connections 10 4.7 Switch on device 10 ; Check the electrical equipment of the device at regular intervals, refer to chapter 6.2 Safety test. 4.8 Switching off the device 10 ; Replace loose connections and defective cables immediately. 5. INTEGRATED PROTECTIVE FUNCTIONS 10 6. MAINTENANCE, MALFUNCTIONS, POSSIBLE CAUSES AND REMEDIES 11 DANGER Electrical load on the device Risk of electric shock 6.1 Cleaning 12 6.2 Safety test 12 → Stand on a rubber mat if you are working on an electrically charged device. 1.1 Levels of hazard warnings These operating instructions use the following hazard levels to indicate potentially hazardous situations and important safety regulations: DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Compliance with the measures is mandatory. WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Exercise extreme caution while working. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damage of property. NOTE A potentially harmful situation can occur and, if not avoided, can lead to property damage. 1.2 Staff qualification The device may only be transported, unpacked, installed, operated, maintained and otherwise used by qualified, trained and authorised technical staff. Only authorised specialists are permitted to install the device, to carry out a test run and to perform work on the electrical installation. 1.3 Basic safety rules Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device. Observe the following when working on the unit: ; Do not make any modifications, additions or conversions to the device without the approval of ebm-papst. 1.4 Electrical voltage WARNING Terminals and connections have voltage even with a unit that is shut off Electric shock → Wait five minutes after disconnecting the voltage at all poles before opening the device. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 1 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions CAUTION In the event of failure, there is electric voltage at the rotor and impeller The rotor and impeller are base insulated. WARNING Rotating device Long hair, loose items of clothing and jewellery could become entangled and pulled into the device. You could be injured. → Do not touch the rotor and impeller once they are installed. → Do not wear any loose clothing or jewellery while working on rotating parts. CAUTION If control voltage is applied or a speed setpoint is stored, the motor automatically restarts, e.g. after a power failure. Danger of injury → Keep out of the danger zone of the device. 1.8 Emission → When working on the device, switch off the mains supply voltage and secure the latter from being switched on again. WARNING Depending on the installation and operating conditions, a sound pressure level greater than 70 dB(A) may arise. Danger of noise-induced hearing loss → Wait until the device stops. → Take appropriate technical safety measures. → After working on the device, remove any used tools or other objects from the device. → Protect operating personnel with appropriate safety equipment, e.g. hearing protection. 1.5 Safety and protective functions DANGER Missing safety device and non-functioning safety device If there is no safety device, you could be seriously injured, for example if you reach into the running device or your hands are sucked into it. → Operate the device only with a fixed and isolating safety protection and a fixed guard grille. The guard must withstand the kinetic energy of a fan blade detaching at maximum speed. → The device is a built-in component. You, the owner/ operator, are responsible for providing adequate protection for the device. → Shut down the device immediately if you detect a missing or ineffective protective feature. 1.6 Electromagnetic radiation NOTE Electrical or electromagnetic interferences after integrating the device in installations on the customer's side. Translation of the original operating instructions → Protect long hair by wearing a cap. → Verify that the entire setup is EMC compliant. 1.7 Mechanical movement DANGER Rotating device Body parts that come into contact with the rotor and impeller can be injured. → Secure the device against accidental contact. → Before working on the system/machine, wait until all parts have come to a standstill. DANGER Flying parts Missing safety devices may cause balancing weights or broken fan blades to be ejected at high speeds, causing bodily harm. → Take appropriate safety measures. → Also observe the requirements of local agencies. 1.9 Hot surface CAUTION High temperature at the electronics enclosure Danger of burn injuries → Ensure that sufficient protection against accidental contact is provided. 1.10 Transport WARNING Transport of fan Injuries from slipping or falling. → Only transport the fan in its original packaging. → The fans must always be transported and handled such that they cannot tip. This is particularly necessary to observe in the case of devices that stand "vertically" (with horizontal axes). # Transport the fan "lying flat", in other words with the axis vertical. → Secure the fan(s) with a lashing strap, for example, so that nothing slips or tips; this is especially important if stacking multiple fans. → Also take into consideration potential wind forces. 1.11 Storage WARNING Storing the fan Injuries from slipping or falling. → The fans must always be stored and handled such that they cannot tip. This is particularly necessary to observe in the case of devices that stand "vertically" (with horizontal axes). # Store the fan "lying flat", in other words with the axis vertical. → Secure the fan(s) with a lashing strap, for example, so that nothing slips or tips; this is especially important if stacking multiple fans. → Also take into consideration potential wind forces. ; Store the device, partially or fully assembled, in a dry and weatherproof manner in the original packing in a clean environment. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 2 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions ; Protect the device from environmental impacts and dirt until the final installation. ; We recommend storing the device for a maximum up to one year to guarantee proper operation and longest possible service life. ; Even devices explicitly suited for outdoor use are to be stored as described prior to being commissioned. ; Maintain the storage temperature, see chapter 3.6 Transport and storage conditions. ; Please make sure that all screwed cable glands are fitted with dummy plugs. 2. PROPER USE The device is exclusively designed as a built-in device for conveying air according to its technical data. Any other usage above and beyond this does not conform with the intended purpose and constitutes misuse of the device. Customer equipment must be capable of withstanding the mechanical and thermal stresses that can arise from this product. This applies for the entire service life of the equipment in which this product is installed. Proper use also includes: ● Use the device in power systems with earthed neutral (TN/TT power systems) only. ● Only using the device in stationary systems. ● Carrying out all maintenance. ● Moving air with a density of 1.2 kg/m³. ● Using the device in accordance with the permitted ambient temperature, see chapter 3.6 Transport and storage conditions and chapter 3.2 Nominal data. ● Operating the device with all protective features in place. ● Minding the operating instructions. 1.12 Disposal When disposing of the device, please comply with all relevant requirements and regulations applicable in your country. Improper use Translation of the original operating instructions Using the device in the following ways is particularly prohibited and may cause hazards: ● Operating the device with an imbalance, e.g. caused by dirt deposits or icing. ● Operation in medical equipment with a life-sustaining or lifesaving function. ● Operation with external vibrations. ● Moving solids content in flow medium. ● Painting the device ● Connections (e.g. screws) coming loose during operation. ● Opening the terminal box during operation. ● Standing or walking on the device ● Moving air that contains abrasive particles. ● Moving highly corrosive air, e.g. salt spray mist. Exceptions are devices that are intended for salt spray mist and protected accordingly. ● Moving air that contains dust pollution, e.g. suctioning off saw dust. ● Operating the device close to flammable materials or components. ● Operating the device in an explosive atmosphere. ● Using the device as a safety component or for taking on safetyrelated functions. ● Operation with completely or partially disassembled or modified protective features. ● In addition, all application options that are not listed under proper use. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 3 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions 3. TECHNICAL DATA 3.1 Product drawing Translation of the original operating instructions All measures have the unit mm. 1 2 3 4 5 Direction of air flow "A" Depth of screw max. 25 mm Cable diameter: min. 4 mm, max. 10 mm, tightening torque: 4±0.6 Nm Cable diameter: min. 9 mm, max. 16 mm, tightening torque: 6±0.9 Nm Tightening torque 3.5±0.5 Nm Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 4 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com Operating instructions A3GZ50-AB02-35 Operation mode Motor bearing Technical features 3.2 Nominal data Motor M3G200-LA Phase Nominal voltage / VAC Nominal voltage range / VAC Frequency / Hz 3~ 400 380 .. 480 Type of data definition Speed / min-1 Power input / W Current draw / A Max. back pressure / Pa Min. ambient temperature / °C Max. ambient temperature / °C ml 645 4100 6.5 180 -25 50/60 60 ml = Max. load · me = Max. efficiency · fa = Running at free air cs = Customer specs · cu = Customer unit Touch current acc. IEC 60990 (measuring network Fig. 4, TN system) Electrical leads Motor protection Subject to alterations 3.3 Data according to ErP directive Installation category Efficiency category Variable speed drive Specific ratio* * A Static Yes 1.00 Protection class Specific ratio = 1 + pfs / 100 000 Pa Actual Overall efficiency ηes / % Efficiency grade N Power input Ped / kW Air flow qv / m³/h Pressure increase total psf / Pa Speed n / min-1 45.4 48 3.87 40145 151 650 Request 2013 33.4 36 Request 2015 37.4 40 Translation of the original operating instructions Data definition with optimum efficiency. The ErP data is determined using a motor-impeller combination in a standardised measurement configuration. 3.4 Technical features Mass Size Surface of rotor Material of electronics housing Material of blades Number of blades Blade angle Direction of air flow Direction of rotation Type of protection Insulation class Humidity class Mounting position Condensate discharge holes 65 kg 1250 mm Coated in black Die-cast aluminium, coated in black Die-cast aluminium, coated in black 5 0° "A" Counter-clockwise, seen on rotor IP 54 "F" F5 Shaft horizontal or rotor on top On the stator side Product conforming to standard Approval S1 Ball bearing - Output 10 VDC, max. 10 mA - Output 20 VDC, max. 50 mA - Output for slave 0-10 V - Input for sensor 0-10 V or 4-20 mA - External 24 V input (programming) - External release input - Alarm relay - Integrated PID controller - Motor current limit - PFC, passive - RS485 MODBUS RTU - Soft start - Control input 2-bit - Control interface with SELV potential safely disconnected from the mains - Over-temperature protected electronics / motor - Line undervoltage / phase failure detection <= 3.5 mA Via terminal box Reverse polarity and locked-rotor protection I (if protective earth is connected by customer) EN 61800-5-1; CE C22.2 Nr.77 + CAN/CSA-E60730-1; EAC; UL 1004-7 + 60730 For cyclic speed loads, note that the rotating parts of the device are designed for maximum one million load cycles. If you have specific questions, contact ebm-papst for support. 3.5 Mounting data ; Secure the mounting screws against accidentally coming loose (e.g. by using self-locking screws). Strength class for mounting screws 10.9 You can obtain additional mounting data from the product drawing if necessary. 3.6 Transport and storage conditions ; Use the device in accordance with its protection type. Max. permissible ambient motor temp. (transp./ storage) Min. permissible ambient motor temp. (transp./storage) +80 °C -40 °C Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 5 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions NOTE Interferences and failures are possible Maintain a distance to the power supply line when routing the control lines of the device. 4. CONNECTION AND START-UP 4.1 Connecting the mechanical system NOTE Imbalance Reduced service life of the device → Ensure a sufficiently large clearance. Recommendation: clearance > 10 cm (separate cable routing) → Do not hold or transport the device by the blades. Use cloth cable loops, for example, to move the device using a crane. NOTE Water penetration into leads or wires Water enters at the cable end on the customers side and can damage the device. → After installation, ensure that the impeller can move easily and the blades of the impeller are not deformed or bent and do not scrape anywhere. → Make sure that the cable end is connected in a dry environment. CAUTION Cutting and crushing hazard when removing the fan from the packaging → Carefully remove the device from its packaging, holding it by the centre of the blades only. Make sure to avoid any shock. → Wear safety shoes and cut-resistant safety gloves. ; Check the device for transport damage. Damaged devices must no longer be installed. ; Install the undamaged device according to your application. 4.2 Connecting the electrical system DANGER Electric voltage on the device Electric shock → Always install a protective earth first. 4.2.1 Prerequisites ; Check whether the data on the type plate agree with the connection data. ; Before connecting the device, ensure that the supply voltage matches the operating voltage of the device. ; Only use cables designed for current according to the type plate. For determining the cross-section, follow the basic principles in accordance with EN 61800-5-1. The protective earth must have a cross-section equal to or greater than the outer conductor crosssection. We recommend the use of 105°C cables. Ensure that the minimum cable cross-section is at least AWG26/0.13 mm². → Check the protective earth. Earth wire contact resistance to EN 61800-5-1 DANGER Incorrect insulation Risk of fatal injury from electric shock Compliance with the impedance specifications to EN 61800-5-1 for the protective earth circuit must be verified in the end application. Depending on the installation situation, it may be necessary to install an additional protective earthing conductor via the additional protective earth connection point available on the device. The protective earth connection point is located on the housing and has a protective earth symbol and a bore hole. → Use only cables that meet the specified installation requirements for voltage, current, insulation material, load etc. → Route cables such that they cannot be touched by any rotating parts. Translation of the original operating instructions Connect the device only to circuits that can be switched off using an all-pole disconnecting switch. DANGER Electrical load (>50 µC) between mains wire and protective earth connection after switching of the supply when switching multiple devices in parallel. Electric shock, risk of injury → Make sure that sufficient protection against accidental contact is provided. Before working on the electrical connection, the connections to the mains supply and PE must be shorted. CAUTION Electrical voltage The fan is a built-in component and features no electrically isolating switch. → Only connect the fan to circuits that can be switched off with an all-pole separating switch. → When working on the fan, you must switch off the installation/machine in which the fan is installed and secure it from being switched on again. 4.2.2 Power supply connection, fuse protection Assignment of conductor cross-sections and the fuse protection required for them (overload protection only, no device protection). Nominal voltage 3/PE AC 380 - 480 VAC 3/PE AC 380 - 480 VAC 3/PE AC 380 - 480 VAC 3/PE AC 380 - 480 VAC Safety fuse VDE 16 A UL 15 A Automatic circuit breaker VDE C16A Wire crosssection mm² 1.5 Wire crosssection *AWG 16 20 A 20 A C20A 2.5 14 25 A 25 A C25A 4.0 12 32 A 30 A C32A 6.0 10 * AWG = American Wire Gauge Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 6 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions 4.2.3 Idle current Because of the EMC filter integrated for compliance with EMC limits (interference emission and interference immunity), idle currents in the mains cable can be measured even when the motor is at a standstill and the mains voltage is switched on. ● The values lie in a range of typical < 350 mA. ● The effective power in this operating state (readiness for operation) is simultaneously at typical < 6 W. 4.2.4 Residual current operated device Only universal (type B or B+) RCD protective devices are permitted. Like frequency inverters, RCD protective devices cannot provide personal safety while operating the device. When switching on the power supply of the device, pulsed charge currents from the capacitors in the integrated EMC filter can lead to the RCD protective devices triggering without delay. We recommend residual current devices with a trigger threshold of 300 mA and delayed triggering (super-resistant, characteristic K). 4.3.2 Connecting cables with terminals WARNING Terminals and connections have voltage even with a unit that is shut off Electric shock → Wait five minutes after disconnecting the voltage at all poles before opening the device. ; Remove the cap from the screwed cable gland. Remove the cap only in those places where cables are inserted. ; Insert the line(s) (not included in the standard scope of delivery) into the terminal box. ; First connect the "PE" (protective earth) connection. ; Connect the lines to the corresponding terminals. Use a screwdriver to do so. During the connection work, ensure that no cables splice off. 4.2.5 Leakage current For asymmetrical power systems or if a phase fails, the leakage current can increase to a multiple of the nominal value. 4.2.6 Locked-rotor protection Due to the locked-rotor protection, the start-up current (LRA) is equal to or less than the nominal current (FLA). 4.3 Connection in terminal box 4.3.1 Preparing connection lines for the connection Translation of the original operating instructions Strip the cable just enough so that the screwed cable gland is tight and the terminals are relieved of strain. Tightening torque, see chapter 3.1 Product drawing. Fig. 2: Connecting the wires to terminals Fig. 1: Recommended stripping lengths in mm (inside the terminal box) Legend: CL = control lines ; Seal the terminal box. 4.3.3 Cable routing No water may penetrate along the cable in the direction of the cable gland. Fans installed in upright position When routing the cable, ensure that the screwed cable glands are arranged at the bottom. The cables must always be routed downwards. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 7 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com Operating instructions A3GZ50-AB02-35 Fig. 3: Cable routing for fans installed upright. 4.4 Factory settings Factory settings with which the device is pre-set by ebm-papst. PWM controlling PWM controlling 01 100 8 Yes Analogue (linear) Positive (heating) Positive (heating) Translation of the original operating instructions Control mode parameter set 1 Control mode parameter set 2 Fan / device adress Max. PWM / % Min. PWM / % Save set value to EEPROM Set value control Control function parameter set 1 Control function parameter set 2 Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 8 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions Translation of the original operating instructions 4.5 Connection screen No. KL 1 KL 1 KL 1 PE KL 2 KL2 Conn. 1 2 3 1 2 Designation L1 L2 L3 PE NO COM KL2 KL 3 KL 3 KL 3 KL 3 3 1 2 3 / 10 4 NC RSA RSB GND Ain1 U KL 3 5 + 10 V KL 3 6 Ain1 I KL 3 7 Din1 KL 3 8 Din2 KL 3 9 Din3 KL 3 11 Ain2 U KL 3 12 + 20 V KL 3 13 Ain2 I KL 3 14 Aout Function / assignment Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz Mains supply connection, supply voltage 3~380-480 VAC; 50/60 Hz Earth connection, PE connection Status relay, floating status contact; normally open; close with error Status relay; floating status contact; changeover contact; common connection; contact rating 250 VAC / max. 2 A (AC1) / min. 10 mA Status relay, floating status contact; break with error Bus connection RS-485, RSA, MODBUS RTU; SELV Bus connection RS-485, RSB, MODBUS RTU; SELV Signal ground for control interface; SELV Analogue input 1, set value: 0-10 V, Ri = 100 kΩ, parametrisable curve, only usable as alternative to input Ain1; SELV Fixed voltage output 10 VDC, +10 V ±3%, max. 10 mA, short-circuit-proof, power supply for external devices (e.g. potentiometer), SELV Analogue input 1, set value: 4-20 mA; Ri = 100 Ω, parametrisable curve, only usable as alternative to input Ain1 U; SELV Digital input 1: enabling of electronics, enabling: open pin or applied voltage 5-50 VDC disabling: bridge to GND or applied voltage <1 VDC reset function: triggers software reset after a level change to <1 VDC; SELV Digital input 2: parameter set switch 1/2, according to EEPROM setting, the valid/used parameter set can be selected via bus or via digital input DIN2. Parameter set 1: open pin or applied voltage 5-50 VDC Parameter set 2: bridge to GND or applied voltage <1 VDC; SELV Digital input 3: controller function of integrated controller, according to EEPROM setting, the controller function of the integrated controller is normally/inversely selectable per bus or per digital input normal: open pin or applied voltage 5-50 VDC inverse: bridge to GND or applied voltage <1 VDC; SELV Analogue input 2, actual value: 0-10 V, Ri = 100 kΩ, parametrisable curve, only usable as alternative to input Ain2; SELV Fixed voltage output 20 VDC, +20 V +25/-10%, max. 50 mA, short-circuit-proof, power supply for external devices (e.g. sensors); SELV Analogue input 2, actual value: 4-20 mA, Ri = 100 Ω, parametrisable curve, only usable as alternative to input Ain2 U; SELV Analogue output 0-10 VDC, max. 5 mA, output of the current motor level control coefficient / motor speed parametrisable curve; SELV Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 9 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com A3GZ50-AB02-35 Operating instructions 4.6 Checking the connections 5. INTEGRATED PROTECTIVE FUNCTIONS ; Make sure that the power is off (all phases). ; Secure it from being switched on again. The integrated protective functions cause the motor to switch off automatically in case of faults described in the table. ; Check the correct fit of the connection lines. Malfunctions ; Screw the terminal box cover closed again. Terminal box tightening torque, see chapter 3.1 Product drawing. ; Route the connecting cables in the terminal box so that the terminal box cover closes without resistance. ; Use all plug screws (the entire number). In doing so, insert the screws manually to avoid damage to the thread. ; Make sure that the terminal box is correctly closed and sealed and that all screws and screwed cable glands are properly tightened. 4.7 Switch on device The device may only be switched on if it has been installed properly and in accordance with its intended use, including the required safety mechanisms and professional electrical connection. This also applies for devices which have already been equipped with plugs and terminals or similar connectors by the customer. Rotor position detection error Locked rotor Line under-voltage (mains input voltage outside of permitted nominal voltage) Phase failure Description / Function of safety feature An automatic restart occurs. ; After the blockage is removed, the motor restarts automatically. ; If the mains supply voltage returns to permitted values, the motor restarts automatically. A phase of the supply voltage fails for at least 5 s. ; If all phases are correctly supplied again, the motor automatically restarts after 10 40 s. WARNING Hot motor housing Fire hazard → Ensure that no combustible or flammable materials are located close to the fan. ; Inspect the device for visible external damage and the proper function of the protective features before switching it on. ; Check the air flow paths of the fan for foreign objects and remove any that are found. ; Apply the nominal voltage to the voltage supply. ; Start the device by changing the input signal. 4.8 Switching off the device Switching off the device during operation: ; Switch off the device via the control input. ; Do not switch the motor (e.g. in cyclic operation) on and off via power supply. Translation of the original operating instructions Switching off the device for maintenance work: ; Switch off the device via the control input. ; Do not switch the motor (e.g. in cyclic operation) on and off via power supply. ; Disconnect the device from the supply voltage. ; When disconnecting, be sure to disconnect the earth wire connection last. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 10 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com Operating instructions A3GZ50-AB02-35 6. MAINTENANCE, MALFUNCTIONS, POSSIBLE CAUSES AND REMEDIES Insufficient cooling Do not perform any repairs on your device. Return the device to ebmpapst for repair or replacement. WARNING Terminals and connections have voltage even with a unit that is shut off Electric shock → Wait five minutes after disconnecting the voltage at all poles before opening the device. CAUTION If control voltage is applied or a speed setpoint is stored, the motor automatically restarts, e.g. after a power failure. Danger of injury → Keep out of the danger zone of the device. → When working on the device, switch off the mains supply voltage and secure the latter from being switched on again. Ambient temperature too high → Wait until the device stops. → After working on the device, remove any used tools or other objects from the device. If the device remains out of use for over four months, we recommend switching the device on for at least four hours at full speed to allow any condensate to evaporate and to move the bearings. Translation of the original operating instructions Malfunction/error Impeller running roughly Motor does not turn Possible cause Imbalance in rotating parts Mechanical blockage Mains supply voltage faulty Faulty connection Motor winding broken Possible remedy Clean the device; if imbalance is still evident after cleaning, replace the device. If you have attached any weight clips during cleaning, make sure to remove them afterwards. Switch off, deenergise, and remove mechanical blockage. Check mains supply voltage, restore power supply. Important! The error message resets automatically. The device starts up again automatically without advance warning. De-energise, correct connection, see connection diagram. Replace device Unacceptable operating point (e.g. counterpressure is too high) Improve cooling. Let the device cool down. To reset the error message, switch off the mains supply voltage for a min. of 25 s and switch it on again. Alternatively, reset the error message by applying a control signal of <0.5 V to DIN1 or by short circuiting Din1 to GND. Reduce the ambient temperature. Let the device cool down. To reset the error message, switch off the mains supply voltage for a min. of 25 s and switch it on again. Alternatively, reset the error message by applying a control signal of <0.5 V to DIN1 or by short circuiting Din1 to GND. Correct the operating point. Let the device cool down. To reset the error message, switch off the mains supply voltage for a min. of 25 s and switch it on again. Alternatively, reset the error message by applying a control signal of <0.5 V to DIN1 or by short circuiting Din1 to GND. If you have any other problems, contact ebm-papst. Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 11 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com Operating instructions A3GZ50-AB02-35 6.1 Cleaning NOTE Damage to the device during cleaning. Malfunction possible → Do not clean the device using a water jet or high-pressure washer. → Do not use any cleaners containing acids, bases or solvents. → Do not use any pointed or sharp-edged objects to clean. 6.2 Safety test NOTE High-voltage test The integrated EMC filter contains Y capacitors. Therefore, the trigger current is exceeded when AC testing voltage is applied. Translation of the original operating instructions → Test the device with DC voltage when you carry out the high-voltage test required by law. The voltage to be used corresponds to the peak value of the AC voltage required by the standard. What has to be tested? Check the protective casing against accidental contact for damage and to ensure that it is intact Check the device for damage to blades and housing Mounting the connection lines Check the insulation of the wires for damage Tightness of screwed cable gland Condensate discharge holes for clogging, as necessary Weld seams for crack formation How to test? Frequency Visual inspection At least every 6 months Which measure? Repair or replacement of the device Visual inspection At least every 6 months Replacement of the device Visual inspection At least every 6 months Visual inspection At least every 6 months Fasten Visual inspection At least every 6 months Retighten, replace if damaged Open bore holes Visual inspection At least every 6 months Visual inspection At least every 6 months Replace wires Replace device Item no. 51475-5-9970 · ENG · Revision 82539 · Release 2014-05-08 · Page 12 / 12 ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com