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BLEMO ER21 User Manual

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BLEMO Frequenzumrichter
Frequency Inverter
ER21
user manual

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Summary of Contents for BLEMO ER21

  • Page 1 BLEMO Frequenzumrichter Frequency Inverter ER21 user manual...
  • Page 2 The specifications contained in this document must be applied in order to comply with the essential requirements of the EMC directive. The BLEMO-ER21 must be considered as a component : it is neither a machine nor a device ready for use in accordance with European directives (machinery directive and electromagnetic compatibility directive).

  • Page 3: Table Of Contents

    Table of Contents Steps for Setting Up the Speed Controller _____________________________________________ 50 Factory Configuration _____________________________________________________________ 51 Speed Controller References _______________________________________________________ 52 Mounting _______________________________________________________________________ 54 Wiring _________________________________________________________________________ 57 Basic Functions__________________________________________________________________ 64 Configurable I/O Application Functions________________________________________________ 65 Setup - Preliminary Recommendations________________________________________________ 71 Programming ___________________________________________________________________ 72 Local control option _______________________________________________________________ 74 Remote Display Module Option _____________________________________________________ 75...

  • Page 4: Steps For Setting Up The Speed Controller

    • Check that the speed controller reference printed on the label is the same as that on the delivery note corresponding to the purchase order. • Remove the BLEMO-ER21 from its packaging and check that it has not been damaged in transit. 2 - Fit the speed controller and attach its labels (page 51) 3 - Connect the following to the speed controller : •...

  • Page 5: Factory Configuration

    Factory Configuration Factory settings The BLEMO-ER21 is factory-set for the most common operating conditions: - Display : speed controller ready (when stopped), motor frequency (when running) - Line supply : 50 Hz. - Motor voltage : 230 V or 400 V, depending on product...

  • Page 6: Speed Controller References

    Speed Controller References Single phase supply voltage (1) U1...U2 : 200…240 V 50/60 Hz Motor Line supply BLEMO-ER21-...-K Power Line Max. Line Max. Power Reference indicated on current (3) prosp. current transient dissipated plate (2) line Isc current (4) at nominal...
  • Page 7 Speed Controller References (1) Nominal supply voltages : min. U1, max. U2. (2) These power ratings are for a maximum switching frequency of 4 kHz, in continuous operation. The switching frequency is adjustable from 2 to 15 kHz. Above 4 kHz derate the nominal speed controller current. The nominal motor current should not exceed this value : •...

  • Page 8: Mounting

    Mounting Dimensions and weights BLEMO-ER21-...-K 2 Ø 4 Ø weight -0.37K, -0.75K -1.5K, -0.75/4K, -1.5/4K -2.2K, -3.0K, -4.0K, -2.2/4K, -3.0/4K, -4.0/4K -5.5K, -7.5K, -5.5/4K, -7.5/4K -11.0/4K, -15.0/4K Mounting recommendations Install the unit vertically, at ± 10° . Do not place it close to heating elements.
  • Page 9 Mounting Mounting and Temperature Conditions Free space in front of the unit : 10 mm minimum. • from -10°C to 40°C : • d >= 50 mm : no special precautions. • d = 0 (speed controllers mounted side by side) : remove the protective cover from the top of the speed controller, as shown below (the degree of protection becomes IP20).
  • Page 10 Mounting Electromagnetic compatibility EMC plate supplied with the speed controller Fit the EMC plate used for equipotential earthing on the holes of the BLEMO-ER21 heatsink using the 2 screws provided, as shown in the drawing opposite. ∆b BLEMO-ER21-...-K Ø -0.37K, -0.75K, -1.5K, -2.2K, -3.0K, -4.0K,...

  • Page 11: Wiring

    Wiring Access to terminals To access the terminals, undo the screws on the cover and tilt. Diagram : Example showing ER21-0.37K The speed controllers have a removable plastic cable gland with knock-outs for running cables through, if required (control and braking resistor).
  • Page 12 For the motor ground, use the ground screw provided on the heatsink or on the EMC plate. ER21-3.0K, -4.0K, -0.75/4K, -1.5/4K, -2.2/4K, -3.0/4K, -4.0/4K : For the motor ground, use the ground screw provided on the heatsink or on the EMC plate.
  • Page 13 Wiring Control terminals Arrangement, specifications and functions of the control terminals - Maximum connection capacity 1.5 mm - AWG 16 - Max. tightening torque : 0.5 Nm Terminal Function Electrical specifications Common point C/O contact Min. switching capacity (R1C) of R1 fault relay •...
  • Page 14 + 24 terminal on the speed controller. Note : Fit interference suppressors to all inductive circuits near the speed controller or coupled to the same circuit (relays, contactors, solenoid valves, etc) Choice of associated components : See BLEMO-ER21 catalog.
  • Page 15 Wiring Wiring recommendations Power Observe the cable cross-sectional areas recommended in the standards. The speed controller must be earthed, in order to comply with regulations concerning high leakage currents (over 3.5 mA). When the use of an upstream "residual current device" for protection is required by the installation standards, a "type B"...
  • Page 16 Wiring Electromagnetic compatibility Principle • Grounds between speed controller, motor and cable shielding should have "high frequency" equipotentiality. • Use shielded cables with shielding connected to ground at 360° at both ends for the motor cable, braking resistor (if used) and control-command cables. Conduit or metal ducting can be used for part of the shielding length, provided that there is no break in continuity.
  • Page 17 1 - Sheet steel grounded casing supplied with the speed controller, to be fitted as indicated on the diagram. 2 - BLEMO-ER21 3 - Non-shielded power supply wires or cables. 4 - Non-shielded wires for the output of the safety relay contacts.

  • Page 18: Basic Functions

    Basic Functions Fault relay, unlocking The fault relay is energized when the speed controller is powered up and there is no fault. It has a common point C/O contact. The speed controller is unlocked after a fault by the following operations : - Powering down the speed controller until the display and the red LED extinguish, then powering up again - Automatically when the "automatic restart"...

  • Page 19: Configurable I/O Application Functions

    Configurable I/O Application Functions Logic input application functions Direction of operation : forward / reverse Reverse operation can be disabled for applications with a single direction of motor rotation. 2-wire control : Run (forward or reverse) and stop are controlled by the same logic input, for which state 1 (run) or 0 (stop) is taken into account.
  • Page 20 Configurable I/O Application Functions Preset speeds 2, 4 or 8 speeds can be preset, and requiring 1, 2, or 3 logic inputs respectively. The following assignment order must be observed : PS2 (LIx), then PS4 (LIy), then PS8 (LIz). 2 preset speeds 4 preset speeds 8 preset speeds Assign : LIx to PS2...
  • Page 21 Configurable I/O Application Functions Freewheel stop Stops the motor by the resistive torque only. The motor power supply is cut. Freewheel stop occurs when the logic input assigned to this function opens (state 0). DC injection stop This can be activated in 2 ways : - by activation of a logic input assigned to this function (state 1) - automatically if the frequency is below 0.5 Hz Fast stop :...
  • Page 22 PI regulator : Can be assigned to AI2/AIC. Allows a sensor to be connected and activates the PI regulator. The reference is input AI1 or an internal reference rPI which can be adjusted via the BLEMO-ER21 keypad. Parameters which can be accessed in the adjust menu :...
  • Page 23 Configurable I/O Application Functions R2 relay application functions Frequency threshold reached (FtA) : The relay contact is closed if the motor frequency is greater than or equal to the frequency threshold set by Ftd in the adjust menu. Speed reference reached (SrA) : The relay contact is closed if the motor frequency is greater than or equal to the speed reference value.
  • Page 24 Configurable I/O Application Functions Function compatibility table The choice of application functions may be limited by the number of I/O and by the fact that some functions are incompatible with one another. Functions which are not listed in this table are fully compatible.

  • Page 25: Setup - Preliminary Recommendations

    Setup - Preliminary Recommendations Prior to powering up and configuring the speed controller - Power down the logic inputs (state 0) to prevent any accidental startup. Otherwise, an input assigned to the run command may cause the motor to start immediately when exiting the configuration menus.

  • Page 26: Programming

    Programming Functions of the keys and the display • Red LED : powered up • 4 seven-segment displays (DC bus voltage) • Enters a menu or a • Returns to the previous parameter, or saves the menu parameter, displayed parameter increases displayed value...
  • Page 27 Programming Access to menus Subsequent power ups power-up after factory configuration Nominal motor frequency : -bFr 50 Hz (factory setting) or 60 Hz bFR configuration (1) Display of speed controller status Wait 3 seconds ---- - SEt- Settings If it is not possible to access the " SEt-", "drC-" or "I-O-"...

  • Page 28: Local Control Option

    Local control option This option consists of a reference potentiometer and provides access to 2 additional buttons on the speed controller (see documentation provided with the option) : – RUN button : controls the switching on of the motor. The direction of operation is determined by parameter rOt in the settings menu SEt-.

  • Page 29: Remote Display Module Option

    (see the manual supplied with the display module). It has the same display and the same programming buttons as the BLEMO-ER21 with the addition of a switch to lock access to the menus and three buttons for controlling the speed controller •...

  • Page 30: Configuration

    Configuration I/O assignment menu I-0- The parameters can only be modified when the speed controller is stopped and locked. The functions are defined in the section "Configurable I/O Application Functions". Code Assignment Factory setting -tCC Configuration of terminal block control : 2-wire or 3-wire control. 2C = 2-wire, 3C = -wire, OPt = presence of the local control option, operation is then identical to 3-wire control.
  • Page 31 Configuration I/O assignment menu I-0- (continued) Code Assignment Factory setting -LI2 Logic inputs -LI3 no : not assigned -LI4 rrS : reverse rotation (2 operating directions) rP2 : ramp switching (1) JOG : "step by step" operation (1) PS2 : 2 preset speeds PS4 : 4 preset speeds (1) PS8 : 8 preset speeds (1) nSt : freewheel stop.
  • Page 32 Configuration I/O assignment menu (continued) I-0- Code Assignment Factory setting -CrL Minimum value on input AIC, adjustable from 0 to 20 mA. 4 mA -CrH Maximum value on input AIC, adjustable from 4 to 20 mA. 20 mA These two parameters are used to configure the input for 0-20 mA, 4-20 mA, 20-4 mA, etc. Frequency If the input used is AI2, these parameters remain proportionally active : 4 mA...
  • Page 33 Configuration I/O assignment menu I-0- (continued) Code Assignment Factory setting Relay R2 no : not assigned FtA : frequency threshold reached. The contact is closed if the motor frequency is greater than or equal to the threshold set by Ftd (1). CtA : current threshold reached.
  • Page 34 Factory range setting -UnS Nominal motor voltage marked on the rating plate. The adjustment range depends on the speed controller model : ER21-0.37K ... 7.5K 200 to 240V 230 V ER21-0.75/4K ... 15.0/4K 380 to 500 V 400 V if...
  • Page 35 Configuration Drive menu drC- (continued) Code Assignment Adjustment Factory range setting -UFt Selection of the type of voltage / frequency ratio L - P - n - nLd n - L : constant torque for motors connected in parallel or special motors - P : variable torque - n : sensorless flux vector control for constant torque applications - nLd : energy saving, for variable torque applications...
  • Page 36 -IPL no : function inactive. YES : function active. This parameter does not exist on the ER21-0.37K, -0.75K, -1.5K and -2.2K for a single phase line supply. The fault is only detected if the motor is on-load (around 0.7 times the nominal power).
  • Page 37 Configuration Drive menu drC- (continued) Code Assignment Adjustment Factory range setting -FLr Enables a smooth restart after the following events : no - YES - loss of line supply or power off - fault reset or automatic restart - freewheel stop or injection stop with logic input no : function inactive.

  • Page 38: Settings

    Settings Adjust menu SEt- These adjustment parameters can be modified with the speed controller stopped or running. Ensure that changes made during operation do not present any danger. Changes should preferably be made with the speed controller stopped. Code Assignment Adjustment Factory range...
  • Page 39 Settings Adjust menu SEt- (continued) Code Assignment Adjustment Factory range setting -UFr Optimizes the torque at very low speed 0 to 100 % -SLP Adjusts the slip compensation around the value set by the nominal motor 0.0 to 5.0 Hz According speed.
  • Page 40 Settings Adjust menu SEt- (continued) Code Assignment Adjustment Factory range setting -SP2 preset speed LSP to HSP 10 Hz -SP3 preset speed LSP to HSP 15 Hz preset speed LSP to HSP 20 Hz -SP4 -SP5 preset speed LSP to HSP 25 Hz preset speed LSP to HSP...
  • Page 41 Settings Display menu SUP- (choice of parameter to be displayed during operation, view the last fault, speed controller software version and access code) The display chosen is saved by : - Pressing the ENT key once: the choice is temporary, it will be cleared at the next power up. - Pressing the ENT key twice : the choice is permanent.
  • Page 42 Settings Display menu SUP- (continued) Code Parameter ---- Display of speed controller status : the operating phase of the motor or a fault. - Init : Initialization sequence - rdY : Speed controller ready - 43.0 : Display of the frequency reference - dcb : DC injection braking in progress - rtrY : Automatic restart in progress - nSt : Freewheel stop command...

  • Page 43: Maintenance

    Maintenance Servicing The BLEMO-ER21 does not require any preventative maintenance. It is nevertheless advisable to carry out the following operations regularly : Check the condition and tightness of connections. Check that the temperature around the unit remains at an acceptable level and that the ventilation is effective (average service life of fans : 3 to 5 years depending on operating conditions).

  • Page 44: Faults - Causes - Remedies

    • The assignment of the "Fast stop" or "Freewheel stop" functions will prevent the controller from starting if the corresponding logic inputs are not powered up. The BLEMO-ER21 then displays "nSt" in freewheel stop mode and "FSt" in fast stop mode. This is normal since these functions are active at zero so that the controller will be stopped safely if there is a wire break.
  • Page 45 - transient phase fault - Reset - 3-phase ER21 used on a single - Use a 3-phase line supply. phase line supply -OPF - loss of a phase at the speed...

  • Page 46: Configuration/Settings Tables

    Configuration/Settings Tables Speed controller BLEMO-ER21........................Optional customer identification no. : ......................Software version (CPU parameter in the SUP menu) : .................. Optional access code : .......................... Local control option no Menu I-O- (inputs/outputs) Code Factory setting Customer setting Code Factory setting...
  • Page 47 Configuration/Settings Tables SEt- Menu (settings) Code Factory setting Customer setting Code Factory setting Customer setting Control Control -rPI -rOt -ACC -dEC -AC2 -dE2 -LSP -HSP -ItH -UFr -SLP -FLG -IdC -tdC -JPF -JOG -rPG -rIG -FbS -PIC -SP2 -SP3 -SP4 -SP5 -SP6 -SP7...
  • Page 48  BLEMO Frequenzumrichter Siemensstraße 4 D-63110 Rodgau – Dudenhofen Tel.: ++49 / 6106 / 82 95-0 Fax: ++49 / 6106 / 82 95-20 Web: www.blemo.com Mail: info@blemo.com...

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