BLEMO ER21 User Manual

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BLEMO Frequenzumrichter Frequency Inverter

ER21 user manual

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ENGLISH

IT NEUTRAL POINT CONNECTION : In the event of use on a 3-phase network with a voltage greater than 460V ±10 % with an isolated or high-impedance system (IT), the internal EMC filter capacitors which are connected to ground must be disconnected. Consult BLEMO Frequenzumrichter product support who are the only people qualified to perform this operation. When the speed controller is powered up, the power elements and some of the control components are connected to the line supply. It is extremely dangerous to touch them. The cover of the speed controller must remain closed.

In general, the speed controller power supply must be disconnected before any operation on either the electrical or mechanical parts of the installation or machine. After the BLEMO-ER21 has been switched off and the red LED has gone out, wait for 10 minutes before working on the equipment. This is the time required for the capacitors to discharge. The motor can be stopped during operation by inhibiting start commands or the speed reference while the speed controller remains powered up. If personnel safety requires prevention of sudden restarts, this electronic locking system is not sufficient : fit a device to remove the power circuit.

The speed controller is fitted with safety devices which, in the event of a fault, can shut down the speed controller and consequently the motor. The motor itself may be stopped by a mechanical blockage. Finally, voltage variations, especially line supply failures, can also cause shutdowns. If the cause of the shutdown disappears, there is a risk of restarting which may endanger certain machines or installations, especially those which must conform to safety regulations.

In this case the user must take precautions against the possibility of restarts, in particular by using a low speed detector to cut off power to the speed controller if the motor performs an unprogrammed shutdown.

The products and equipment described in this document may be changed or modified at any time, either from a technical point of view or in the way they are operated. Their description can in no way be considered contractual. This speed controller must be installed and set up in accordance with IEC international standards and with national standards. Bringing the device into conformity is the responsibility of the systems integrator who must observe the European Union directives, especially the EMC directive. 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). It is the responsibility of the end user to ensure that the machine meets these standards.

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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 Configuration____________________________________________________________________ 76 Settings________________________________________________________________________ 84 Maintenance ____________________________________________________________________ 89 Faults - Causes - Remedies ________________________________________________________ 90 Configuration/Settings Tables_______________________________________________________ 92

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Steps for Setting Up the Speed Controller

1 - Delivery of 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 :

• The line supply, ensuring that it is

volt free

• The motor, ensuring that the terminal configuration corresponds to the supply voltage

• The control via the logic inputs

• The speed reference via the logic or analog inputs

4 - Switch on the speed controller, but do not give a run command 5 - Configure :

• The nominal frequency (bFr) of the motor, if it is other than 50 Hz

• The parameters of the I/O menu, and drC menus but if the factory configuration of the speed controller is not suitable for the application

6 - Set the following in the Set menu :

If the speed controller factory settings are not suitable :

• The acceleration (ACC) and deceleration (dEC) ramps

• The minimum (LSP) and maximum (HSP) speeds

• The motor thermal protection current (ItH)

• Other parameters as required, if the factory configuration has been changed

7 - Start the speed controller

Practical recommendations

• To help with programming the speed controller, fill in the configuration and settings tables (page 92), in particular when the factory configuration has been changed.

• Programming the BLEMO-ER21 can be made easier by internal sequence selections and interlocks. In order to gain the maximum benefit from this, it is recommended that the menus are accessed in the following order :

1) - I/O 2) - drC 3) - Set Not all steps are necessary in every case.

Caution : A check must be made to ensure that the functions which have been programmed are compatible with the wiring layout used.

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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

- Ramps : 3 seconds

- Low speed : 0 Hz

- High speed : 50 Hz.

- Frequency loop gain : standard

- Motor thermal current = nominal speed controller current

- Standstill injection braking current = 0.7 x nominal speed controller current, for 0.5 seconds

- Constant torque operation, with sensorless flux vector control

- Automatic adaptation of the deceleration ramp in the event of overvoltage on braking

- Switching frequency 4 kHz

- Logic inputs :

• LI1, LI2 : 2 directions of operation, 2-wire control

• LI3, LI4 : 4 preset speeds (0 Hz, 10 Hz, 15 Hz, 50 Hz)

- Analog inputs :

• AI1 (0 + 10 V) : speed reference

• AI2 (0 + 10 V) or AIC (0, 20 mA) : summing AI1

- Relay R2 :

• speed reference reached

- Analog output AO (0 - 20 mA) :

• motor frequency

If the above values are compatible with the application, the speed controller can be used without changing the settings.

Labels

The speed controller is supplied with labels which are stored under the hinged cover :

• 1 label fixed inside the hinged cover : wiring diagram

• 3 self-adhesive labels to be fixed near the speed controller if required : programming of the main parameters, meaning of the fault codes and customer settings (blank label).

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Speed Controller References

Single phase supply voltage (1) U1...U2 : 200…240 V 50/60 Hz

3-phase supply voltage (1) U1...U2 : 200…230 V 50/60 Hz

3-phase supply voltage (1) U1...U2 : 380…500 V 50/60 Hz

Motor Line supply BLEMO-ER21-...-K Power

indicated on plate (2)

Line current (3)

Max. prosp. line Isc

Line current

Max. transient current (4)

Power dissipated at nominal load

Reference

at U 1 at U 2

kW HP A A kA A A W

0.37 0.5 7.3 6.1 1 3.3 3.6 32

ER21-0.37K

0.75 1 9.8 8.2 1 4.8 6 45

ER21-0.75K

1.5 2 16 13.5 1 7.8 10.9 75

ER21-1.5K

2.2 3 22.1 18.6 1 11 15 107

ER21-2.2K

3 - 17.6 15.4 5 13.7 18.5 116

ER21-3.0K

4 5 21.9 19.1 5 17.5 24.6 160

ER21-4.0K

5.5 7.5 38 33.2 22 27.5 38 250

ER21-5.5K

7.5 10 43.5 36.6 22 33 49.5 343

ER21-7.5K

Motor Line supply BLEMO-ER21-...-K Power

indicated on plate (2)

Line current (3)

Max. prosp. line Isc

Line current

Max. transient current (4)

Power dissipated at nominal load

Reference

at U 1 at U 2 at 380

to 460V

at 500V

kW HP A A kA A A A W

0.75 1 3.9 3.5 5 2.3 2.1 3.5 33

ER21-0.75/4K

1.5 2 6.5 5.7 5 4.1 3.8 6.2 61

ER21-1.5/4K

2.2 3 8.4 7.5 5 5.5 5.1 8.3 81

ER21-2.2/4K

3 - 10.3 9.1 5 7.1 6.5 10.6 100

ER21-3.0/4K

4 5 13 11.8 5 9.5 8.7 14.3 131

ER21-4.0/4K

5.5 7.5 22.1 20.4 22 14.3 13.2 21.5 215

ER21-5.5/4K

7.5 10 25.8 23.7 22 17 15.6 25.5 281

ER21-7.5/4K

11 15 39.3 35.9 22 27.7 25.5 41.6 401

ER21-11.0/4K

15 20 45 40.8 22 33 30.4 49.5 543

ER21-15.0/4K

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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 :

• Up to 12 kHz derate by 10%

• Above 12 kHz derate by 20%.

(3) Typical value for a 4-pole motor and a maximum switching frequency of 4 kHz, with no additional line choke.

(4) For 60 seconds.

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Mounting

Dimensions and weights

Mounting recommendations

Install the unit vertically, at ± 10°.

Do not place it close to heating elements.

Leave sufficient free space to ensure that the air required for cooling purposes can circulate from the bottom to the top of the unit.

BLEMO-ER21-...-K

ammbmmcmmGmmHmm2 Ømm4 Ømmweight

-0.37K, -0.75K

105 130 140 93 118 5 1.8

-1.5K, -0.75/4K, -1.5/4K

130 150 150 118 138 5 2.5

-2.2K, -3.0K, -4.0K, -2.2/4K, -3.0/4K, -4.0/4K

140 195 163 126 182 5 3.8

-5.5K, -7.5K, -5.5/4K, -7.5/4K

200 270 170 180 255 6 6.1

-11.0/4K, -15.0/4K

245 330 195 225 315 6 9.6

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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).

• from 40°C to 50°C :• d >= 50 mm : remove the prot ective cover from the top of the speed controller, as shown below (the degree of protection becomes IP20). If the cover is left on, derate the nominal speed controller currentnominal speed controller current by 2.2 % for every °C above 40°C.

• d = 0 : remove the protective cover from the top of the speed controller, as shown below (the degree of protection becomes IP20), and derate the nominal speed controller current by 2.2 % for every °C above 40°C .

• from 50°C to 60°C :• d >= 50 mm : remove the prot ective cover from the top of the speed controller, as shown below (the degree of protection becomes IP20), and derate the nominal speed controller current by 3 % for every °C above 50°C.

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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.

BLEMO-ER21-...-K ∆bmmØ

-0.37K, -0.75K, -1.5K,

-2.2K, -3.0K, -4.0K,

-0.75/4K, -1.5/4K, -2.2/4K,

-3.0/4K, -4.0/4K

48 4

-5.5K, -7.5K,

-5.5/4K, -7.5/4K, -11.0/4K,

-15.0/4K

79 4

4 Ø screws for fixing EMC clamps

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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).

- Control

- Power (1 or 2 terminals depending on the rating)

- Ground screw for motor cable (on low ratings only)

Power terminals

Specifications of power terminals

BLEMO-ER21-...-K Maximum connection capacity Tightening torque in Nm

AWG mm

-0.37K, -0.75K AWG 14 2.5 0.8

-1.5K, -0.75/4K, -1.5/4K AWG 12 3 1.2

-2.2K, -3.0K, -4.0K,

-2.2/4K, -3.0/4K, -4.0/4K

AWG 10 5 1.2

-5.5K, -7.5K,

-5.5/4K, -7.5/4K

AWG 5 16 2.5

-11.0/4K, -15.0/4K AWG 3 25 4.5

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Wiring

Functions of power terminals

Arrangement of the power terminals

Do not remove the connector linking terminals P0 and PA.

Terminal Function For BLEMO-ER21-...-K

BLEMO-ER21 ground terminal All ratings L1 L2 Supply for power terminals

All ratings

L3 3-phase only PO DC bus + polarity All ratings PA Output to braking resistor All ratings PB Output to braking resistor All ratings PC DC bus - polarity All ratings U

V W

Output to motor All ratings

BLEMO-ER21 ground terminal -5.5K, -7.5K, -5.5/4K, -7.5/4K,

-11.0/4K, -15.0/4K

ER21-0.37K, -0.75K, -1.5K, -2.2K :

ER21-3.0K, -4.0K, -0.75/4K, -1.5/4K, -2.2/4K, -3.0/4K, -4.0/4K :

ER21-5.5K, -7.5K, -5.5/4K, -7.5/4K, -11.0/4K, -15.0/4K :

For the motor ground, use the ground screw provided on the heatsink or on the EMC plate.

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Wiring

Control terminals

Arrangement, specifications and functions of the control terminals

Terminal

Function

Electrical specifications

R1A R1B R1C

Common point C/O contact (R1C) of R1 fault relay

Min. switching capacity

• 10 mA for 5 V

Max. switching capacity on inductive load (cos

= 0.4 and L/R = 7 ms) :

• 1.5 A for 250 V

and 30 V=

R2A R2C

N/O contact of R2

programmable relay COM I/O common AI1 Analog voltage input Analog input 0 + 10 V

• impedance 30 k

Ω

• resolution 0.01 V

• precision ± 4.3%, linearity ± 0.2%, of max. value

• Sampling time 4 ms max.

+10 Power supply for potentiometer

1 to 10 k

Ω

+10 V (+ 8 % - 0), 10 mA max, protected against short-circuits and overloads

AI2

AIC

Analog voltage input

Analog current input

AI2 or AIC are assignable.

Use either, but not both.

Analog input 0 + 10 V, impedance 30 k

Ω

or Analog input X - Y mA. X and Y can be programmed from 0 to 20 mA, impedance 450

Ω

Resolution, precision, and sampling time of AI2 or AIC = AI1.

AO Analog output Output can be programmed for 0 - 20 mA or 4 - 20 mA

• Precision ± 6% of the max. value, max. load impedance 800

Ω

LI1 LI2 LI3 LI4

Logic inputs Programmable logic inputs

• + 24 V power supply (max. 30 V)

• Impedance 3.5 k

Ω

• State 0 if < 5 V, state 1 if > 11 V

• Sampling time 4 ms max.

+ 24 Logic input power

supply

+ 24 V protected against short-circuits and overloads, min. 19 V, max. 30 V. Max. customer current available 100 mA

- Maximum connection capacity

1.5 mm

- AWG 16

- Max. tightening torque :

0.5 Nm

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Wiring

Wiring diagram for factory settings

(1) Line choke, if used (single phase or 3-phase). (2) Safety relay contacts, for remote indication of the speed controller status. (3) Internal +24 V. If an external +24 V source is used, connect the 0 V from that source to the COM terminal, and do not use the + 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.

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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" device must be used, which will operate even in the presence of DC components. If the installation has several speed controllers on the same line, each controller must be earthed separately. If necessary, fit a line choke (consult the catalogue).

Keep the power cables separate from circuits in the installation with low level signals (detectors, PLCs, measuring apparatus, video, telephone).

Control

Keep the control circuits and the power cables apart. For control and speed reference circuits, we recommend using shielded twisted cables with a pitch of between 25 and 50 mm, connecting the shielding to ground at each end.

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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.

• Ensure maximum separation between the power supply cable (line supply) and the motor cable.

Installation diagram

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Wiring

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. 5 - Attachment and connection to ground of the shielding of cables 6, 7 and 8 as close as possible to the

speed controller :

- strip the shielding

- use cable clamps of an appropriate size on the parts from which the shielding has been stripped, to

attach them to the casing 1.

The shielding must be clamped onto the casing sufficiently tightly to create a good contact.

- types of clamp : stainless steel.

6 - Shielded cable for connecting the motor, with shielding connected to ground at both ends.

This shielding must be unbroken, and if there are intermediate terminals, they must be in EMC

shielded metal boxes. 7 - Shielded cable for connecting the control.

For applications which require a large number of conductors, small cross-sections must be used

(0.5 mm

). The shielding must be connected to ground at both ends. This shielding must be unbroken, and if there are intermediate terminals, they must be in EMC shielded metal boxes.

8 - Shielded cable for connecting the braking resistor, if used. The shielding must be connected to

ground at both ends. This shielding must be unbroken, and if there are intermediate terminals, they must be in EMC shielded metal boxes.

9 - Ground screw for the motor cable with low ratings, as the screw on the heatsink is inaccessible.

Note :

• If an additional input filter is used, it is mounted on the speed controller, and connected directly to the line supply by an unshielded cable. Connection 3 on the speed controller is then made using the filter output cable.

• Although there is an HF equipotential ground connection between the speed controller, the motor and the cable shielding, it is still necessary to connect the PE protective conductors (green-yellow) to the appropriate terminals on each of the devices.

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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" function has been activated

- Via a logic input when this input is assigned to the "fault reset" function

Speed controller thermal protection

Functions :

Thermal protection by thermistor fitted on the heatsink or integrated in the power module.

Indirect protection of the speed controller against overloads by current limit. Typical tripping points :

- motor current = 185 % of nominal speed controller current : 2 seconds

- motor current = maximum speed controller transient current : 60 seconds.

Speed controller ventilation

The fan is powered automatically when the speed controller is unlocked (operating direction + reference). It is powered down a few seconds after the speed controller is locked (motor speed < 0.5 Hz and injection braking completed).

Motor thermal protection

Function :

Thermal protection by calculating I2t

Caution : The motor thermal state memory is reset to zero when the speed controller is switched off.

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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. On power-up or a manual fault reset or after a stop command, the motor can only be powered once the "forward", "reverse" and "DC injection stop" commands have been reset. If the automatic restart function is configured (parameter Atr in the drC menu), these commands are taken into account without a reset being necessary.

3-wire control :

Run (forward or reverse) and stop are controlled by 2 different logic inputs. LI1 is always assigned to the stop function. Stop occurs on opening (state 0). The pulse on the run input is memorized until the stop input is opened. On power-up or a manual fault reset or after a stop command, the motor can only be powered once the "forward", "reverse" and "DC injection stop" commands have been reset.

Ramp switching :

1st ramp : ACC, DEC ; 2nd ramp : AC2, DE2

This can be activated in 2 ways :

- By activating a logic input LIx or by detection of an adjustable frequency threshold Frt.

Step by step operation (JOG):

Low speed operation pulse If the JOG contact is closed, then the operating direction contact activated, the ramp is 0.1 s whatever the ACC, dEC, AC2 and dE2 settings. If the operating direction contact is closed, then the JOG contact activated, the configured ramps are used.

The minimum time between 2 JOG operations is 0.5 seconds Parameter which can be accessed in the adjust menu :

- JOG speed

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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).

To unassign the logic inputs, the following order must be observed : PS8 (LIz), then PS4 (LIy), then PS2 (LIx).

Reference switching :

Two references are switched (AI1 reference and AI2 or AIC reference) by a command on a logic input. This function automatically assigns AI2 or AIC to speed reference 2

Connection diagram

Contact open, reference = AI2 or AIC Contact closed, reference = AI1

If AI2/AIC is assigned to the PI function, operation combines both functions, (see page 68)

2 preset speeds 4 preset speeds 8 preset speeds Assign : LIx to PS2 Assign : LIx to PS2, then LIy to PS4 Assign : LIx to PS2, then

LIy to PS4, then LIz to PS8 LIx speed reference LIy LIx speed reference LIz LIy LIx speed reference 0 Reference (min = LSP) 0 0 Reference (min = LSP) 0 0 0 Reference (min = LSP) 1 HSP 0 1 SP2 0 0 1 SP2

1 0 SP3 0 1 0 SP3 1 1 HSP 0 1 1 SP4

1 0 0 SP5

1 0 1 SP6

1 1 0 SP7

1 1 1 HSP

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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 :

Braked stop with the current deceleration ramp time divided by 4 within the limits of the braking possibilities. Fast stop occurs when the logic input assigned to this function opens (state 0).

Fault reset :

Clears the memorized fault and resets the speed controller if the cause of the fault has disappeared, except for OCF (overcurrent), SCF (motor short-circuit), EEF and InF (internal faults) faults, which require the controller to be powered down. The fault is cleared when the logic input assigned to this function changes from 0 to 1.

Forced local mode when using the serial link :

Changes from line control mode (serial link) to local mode (control via the terminal block).

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Configurable I/O Application Functions

Analog input application functions

Input AI1 is always the reference.

Assignment of AI2/AIC

(AI2 = 0, +10 V or AIC = X-Y mA, X and Y can be configured from 0 to

20mA)

Summing speed reference :

The frequency reference from AI2/AIC can be summed with AI1.

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 :

- regulator proportional gain (rPG)

- regulator integral gain (rIG)

- PI feedback multiplication coefficient (FbS) : is used to adjust the max. value of the feedback so that it corresponds to the max. value of the PI regulator reference.

- reversal of the direction of correction (PIC) : if PIC = no, the motor speed increases when the error is positive, if PIC = YES, the motor speed decreases when the error is positive.

"Manual - Automatic" operation with PI

This function combines the PI regulator and reference switching by a logic input. The speed reference is given by AI1 or by the PI function, depending on the state of the logic input.

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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.

Current threshold reached (CtA) :

The relay contact is closed if the motor current is greater than or equal

to the current threshold set by Ctd in the adjust menu.

Thermal state reached (tSA) :

The relay contact is closed if the motor thermal state is greater than or equal

to the thermal state threshold set by ttd in the adjust menu.

Analog output AO application functions

Analog output AO is a current output, which can be configured for 0 - 20 mA or 4 - 20 mA.

Motor current (code OCr) :

supplies the image of the motor rms current.

20 mA corresponds to twice the nominal motor thermal current Ith.

Motor frequency (code rFr) :

supplies the motor frequency calculated by the speed controller.

20 mA corresponds to the maximum frequency (parameter tFr).

Motor torque (code OLO) :

supplies the image of the motor torque as an absolute value.

20 mA corresponds to twice the nominal motor torque (typical value).

Power (code OPr)

: supplies the image of the power supplied to the motor by the speed controller.

20 mA corresponds to twice the nominal speed controller power.

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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.

Priority functions (functions which cannot be active at the same time) :

Stop functions take priority over run commands. Speed references via logic command take priority over analog references.

DC injection

braking

Summing input

PI regulator

Reference switching

Freewheel stop

Fast stop

JOG operation

Preset speeds

DC injection braking



Summing input

n n

PI regulator

n n n

Reference switching

n n

Freewheel stop

 

Fast stop



JOG operation



Preset speeds

n n



Incompatible functions Compatible functions N/A



The function marked with the arrow takes priority over the other.

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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.

In power switching via line contactor

- Avoid operating contactor KM1 frequently (premature ageing of the filter capacitors). Use inputs LI1 to LI4 to control the speed controller.

- These instructions are vital for cycles < 60 s, otherwise the load resistor may be damaged.

User adjustment and extension of functions

If necessary, the display and the buttons can be used to modify the settings and to extend the functions described in the following pages. It is very easy to return to the factory settings. There are three types of parameter :

- display : values displayed by the speed controller

- adjustment : can be changed during operation or when stopped

- configuration : can only be modified when stopped and no braking is taking place. Can be displayed during operation.

Check that changes to the current operating settings do not present any danger. Changes should preferably be made with the speed controller stopped.

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Programming

Functions of the keys and the display

Pressing or does not store the choices.

Store, save the displayed choice :

The display flashes when a value is stored.

Normal display, with no fault present and no startup :

- 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

- FSt : Fast stop command

• Red LED : powered up (DC bus voltage)

• 4 seven-segment displays

• Enters a menu or a parameter, or saves the displayed parameter or value

• Returns to the previous menu or parameter, or increases the displayed value

• Exits a menu or parameter, or aborts the displayed value to return to the previous value in the memory

ENT

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ENGLISH

Programming

Access to menus

Access to parameters

Example :

(1) Configure bFr at the 1

power-up, using the same procedure as for the other parameters, as

described above.

Caution

, bFr can only then be modified after a return to "factory settings".

Subsequent power ups

1st power-up after factory configuration

Display of speed controller status

Drive

I/O

Nominal motor frequency : 50 Hz (factory setting) or 60 Hz

-bFr

rdY

---- -

SEt-

drC-

SUP-

ENT

bFR configuration (1)

ENT

ESC

I-0-

Settings

Display

Wait 3 seconds

If it is not possible to access the " SEt-", "drC-" or "I-O-" menus, the speed controller is protected by an access code. A remote display module option or PC software is necessary to access these menus, together with knowledge of the code. See SUP- menu page 87.

SEt-

ESC

-YYY

-UUU

100

101

ESC

ENT ENT

ENT

ESC

Parameter Value or assignment

Next parameter

1 flash (save)

ESC

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ENGLISH

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-.

– STOP/RESET button : controls the stopping of the motor and the clearing (resetting) of any

faults The first press on the button stops the motor, and if DC injection standstill braking is configured, a second press stops this braking.

The reference given by the reference potentiometer is summed with analog input AI1. Installing this option requires special factory setting of certain functions :

• I/O :

-tCC = OPt not reassignable

-LI1 = no not reassignable

-LI2 = PS2 reassignable

-LI3 = PS4 reassignable

-LI4 = PS8 reassignable

• Drive : Atr = no, only reassignable at YES

This option cannot be removed once it has been fitted. The option must be connected with the speed controller powered down, otherwise it will trip on an InF fault.

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Remote Display Module Option

This module can be mounted on the door of the wall mounted or floor-standing enclosure. It has a cable with connectors, which is connected to the speed controller serial link (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 :

• FWD/RV : reversal of the direction of rotation

• RUN : motor run command

• STOP/RESET : motor stop command or fault reset The first press on the button stops the motor, and if DC injection standstill braking is configured, a second press stops this braking.

View of the front panel : View of the rear panel :

4-character display

Connector

Access switch :

• position : settings and configuration not accessible

• position : settings accessible

• position : settings and configuration accessible

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Configuration

I/O assignment menu

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.

2-wire control : The open or closed state of the input controls running or stopping. Wiring example : LI1 : forward LIX : reverse

3-wire control (pulse control) : one pulse is all that is needed to control start-up. Wiring example : LI1 : stop LI2 : forward LIx : reverse

Changing the assignment of tCC returns the logic inputs to

factory setting :

• tCC = 2C : LI1 : "Forward", cannot be reassigned LI2 : rrS ("Reverse") LI3 : PS2 LI4 : PS4

• tCC = 3C : LI1 : Stop, cannot be reassigned LI2 : For ("Forward"), cannot be reassigned LI3 : rrS ("Reverse") LI4 : JOG

• tCC = OPt : LI1 : no, cannot be reassigned LI2 : PS2 LI3 : PS4 LI4 : PS8

-LCC

Parameter only accessible with the remote display module option : no - YES Enables control of the speed controller using the STOP/RESET, RUN and FWD/REV buttons on the display module. The speed reference is then given by parameter LFr in the SEt- menu. Only the freewheel, fast stop and DC injection stop commands remain active on the terminal block. If the speed controller / display module link is broken, the speed controller locks on an SLF fault.

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Configuration

I/O assignment menu (continued)

(1) Assigning this function displays the corresponding settings in the SEt- menu so that they can be adjusted.

Code Assignment Factory

setting

-LI2

-LI3

-LI4

Logic inputs no : not assigned 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. Function active when the input is powered down. dCI : DC injection braking IdC, peak limited at 0.5 ItH after 5 seconds

if the command is maintained FSt : fast stop. Function active when the input is powered down. FLO : forced local mode rSt : fault reset rFC : reference switching (when the input is powered down the speed reference is

AIC/AI2 or that generated by the PI function if it is assigned)

• If tCC = 3C, LI2 = For (forward), cannot be reassigned.

• If a function is already assigned to another input it still appears, but its storage using is inactive.

• The 4 or 8 preset speeds must be configured in the following order of assignment : PS2 then PS4 then PS8. They must be cancelled in the reverse order (see

Configurable I/O

Application Functions

)

rrS PS2 PS4

-AIC

Analog input AIC / AI2 no : not assigned. SAI : summing with AI1 PII : PI regulator feedback, the PI reference being internal adjustment parameter rPI (1) PIA : PI regulator feedback, the PI reference being automatically assigned to AI1 (1)

• SAI can only be assigned if a logic input is assigned to rFC (reference switching).

• PII and PIA cannot be assigned if a logic input is assigned to JOG or to PS2.

• If a logic input LIx is assigned to rFC (reference switching) and AIC is assigned to PII or PIA, the speed reference is taken on AI1 if LIx = 0 and is the output of PI if LIx = 1.

SAI

ENT

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Configuration

I/O assignment menu (continued)

Code Assignment Factory

setting

-CrL

-CrH

Minimum value on input AIC, adjustable from 0 to 20 mA. Maximum value on input AIC, adjustable from 4 to 20 mA. These two parameters are used to configure the input for 0-20 mA, 4-20 mA, 20-4 mA, etc.

If the input used is AI2, these parameters remain proportionally active : 4 mA

2 V

20 mA

10 V

For a 0 - 10 V input, configure CrL at 0 and CrH at 20.

4 mA 20 mA

-AO

Analog output no : not assigned. OCr : motor current. 20 mA corresponds to twice the nominal motor thermal

current ItH. rFr : motor frequency. 20 mA corresponds to the maximum frequency tFr. OLO : motor torque. 20 mA corresponds to twice the nominal motor torque. OPr : power supplied by the speed controller. 20 mA corresponds to twice the nominal motor power.

rFr

-AOt

Analog output 0 : 0-20 mA configuration 4 : 4-20 mA configuration

Frequency

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Configuration

I/O assignment menu (continued)

(1) Assigning this function displays the corresponding settings in the SEt- menu so that they can be adjusted.

Code Assignment Factory

setting

-r2

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. The contact is closed if the motor current is greater than

or equal to the threshold set by Ctd (1). SrA : speed reference reached. The contact is closed if the motor frequency is greater than or equal to the speed reference. tSA : thermal threshold reached. The contact is closed if the motor thermal state is greater than or equal to the threshold set by ttd (1).

SrA

-Add

Address of the speed controller when it is controlled via the serial link. Adjustable from 1 to 31.

-bdr

Serial link transmission speed :

9.6 = 9600 bits / s or 19.2 = 19200 bits / s Modification of this parameter is only taken into account after the speed controller has been powered down then powered up.

19.2

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Configuration

Drive menu

The parameters can only be modified with the speed controller stopped and locked, except for Frt, SFr, nrd and SdS, which can be adjusted with the controller running.

Drive performance can be optimized by :

- entering the values given on the rating plate,

- performing an auto-tune operation (on a standard asynchronous motor)

Code Assignment Adjustment

range

Factory setting

-UnS

Nominal motor voltage marked on the rating plate. The adjustment range depends on the speed controller model : ER21-0.37K ... 7.5K ER21-0.75/4K ... 15.0/4K

200 to 240V 380 to 500 V

230 V 400 V if bFr = 50 460 V if bFr = 60

-FrS

Nominal motor frequency marked on the rating plate. 40 to 400 Hz 50 / 60Hz

acc. to bFr

-tUn

Auto-tuning Only active for V/F ratios : n and nLd (Uft parameter)

- no : (factory parameters of standard IEC motors)

- donE (auto-tuning already done) : use the parameters of the auto-tune which has already been done

- YES : starts auto-tuning When autotuning is completed, rdY is displayed. On returning to tUn, donE is displayed. If the fault tnF appears, check that the motor is connected correctly. If the connection is correct, the motor is not suitable : use the L or the P ratio (Uft parameter). Caution : Auto-tuning operation will only be performed if no command has been activated. If a "freewheel" or "fast stop" function is assigned to a logic input, this input must be set to 1 (active at 0).

no-donE-YES no

-tFr

Maximum output frequency 40 to 400 Hz 60 / 72 Hz

(1.2 x bFr)

drC-

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Configuration

Drive menu (continued)

Code Assignment Adjustment

range

Factory setting

-UFt

Selection of the type of voltage / frequency ratio

- 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

L - P - n - nLd n

-brA

Activating this function automatically increases the deceleration time, if this has been set at too low a value for the inertia of the load, thus avoiding the controller going into ObF fault. no : function inactive. YES : function active. This function may not be compatible with position control on a ramp or with the use of a braking resistor.

no - YES YES

-Frt

Ramp switching frequency When the output frequency becomes greater than Frt, the ramp times taken into account are AC2 and dE2. If Frt = 0, the function is inactive. This parameter does not appear if a logic input is assigned to the ramp switching function rP2.

0 to HSP 0 Hz

-SFr

Switching frequency The switching frequency can be adjusted to reduce the noise generated by the motor. Above 4 kHz, the speed controller output current must be derated :

• up to 12 kHz : derated by 10 %

• above 12 kHz : derated by 20 %.

2 to 15 kHz 4.0

-nrd

This function randomly modulates the switching frequency to reduce the motor noise. no : function inactive. YES : function active.

no - YES YES

Parameter can be adjusted during operation

drC-

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Configuration

Drive menu (continued)

Code Assignment Adjustment

range

Factory setting

-Atr

Automatic restart, after locking on a fault, if the fault has disappeared and the other operating conditions permit the restart. The restart is performed by a series of automatic attempts separated by increasingly longer waiting periods : 1 s, 5 s, 10 s, then 1 min for the following attempts. If the restart has not taken place after 6 min, the procedure is aborted and the speed controller remains locked until it is powered down then powered up. The following faults permit this function : OHF, OLF, USF, ObF, OSF, PHF, OPF, SLF. The speed controller fault relay remains activated if this function is active. The speed reference and the operating direction must be maintained. This function can only be used in 2-wire control (tCC = 2C).

Check that any accidental start does not present any danger to personnel or equipment.

- no : Function inactive

- YES : Function active

- USF : Function only active for the USF fault

no - YES USF

-OPL

Enables the motor phase failure fault. (Inhibition of the fault if a switch is used between the speed controller and the motor : no). no : function inactive. YES : function active.

no - YES YES

-IPL

Enables the line supply phase failure fault. 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). At low load, single phase operation does not cause damage.

no - YES YES

-StP

Controlled stop on loss of line supply : Controls the stopping of the motor when there is a loss of line supply, following a ramp which automatically adapts according to the kinetic energy restored. no : function inactive. YES : function active.

no - YES no

drC-

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Configuration

Drive menu (continued)

Code Assignment Adjustment

range

Factory setting

-FLr

Enables a smooth restart after the following events :

- loss of line supply or power off

- fault reset or automatic restart

- freewheel stop or injection stop with logic input no : function inactive. YES : function active.

no - YES no

-drn

Lowers the tripping threshold of the USF fault in order to operate on a line supply with 40% voltage drops. no : function inactive. YES : function active :

• A line choke must be used.

• The performance of the speed controller can no longer be guaranteed when operating at undervoltage.

no - YES no

-SdS

Scale factor for the display parameter SPd (-SUP menu), used to scale a value in proportion to the output frequency, the machine speed or the motor speed. For example : 4-pole motor, 1500 rpm at 50 Hz :

-SdS = 30

-SPd =1500 at 50 Hz

1 to 200 30

-FCS

Return to factory settings no : no YES : the next display will be InIt then bFr (start of the menus)

no - YES no

Parameter can be adjusted during operation

drC-

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Settings

Adjust menu

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.

(1) In is the nominal speed controller current shown in the catalogue and on the speed controller rating plate.

Code Assignment Adjustment

range

Factory setting

-LFr

Speed reference via the display module. This parameter appears with the remote display module option if control of the speed controller via the display module is enabled : LCC parameter in IO- menu.

LSP to HSP

-rPI

PI reference This parameter appears if analog input AIC/AI2 is assigned to the internal PI function (AIC = PII).

0.0 to 100.0 %

0.0

-rOt

Direction of operation. This parameter appears if the "local control" option is present . It defines the direction of operation :

- forward : For, - reverse : rrS

For - rrS For

-ACC

-dEC

Acceleration and deceleration ramp times. Defined to range from 0 to nominal motor frequency (FrS)

0,0 to 3600 s

0.0 to 3600 s

3 s 3 s

-AC2

-dE2

2nd acceleration ramp time 2nd deceleration ramp time These parameters are accessible if the ramp switching threshold (Frt parameter in the drC- menu) is other than 0 Hz or if a logic input is assigned to ramp switching.

0,0 to 3600 s

0.0 to 3600 s

5 s 5 s

-LSP

Low speed 0 to HSP 0 Hz

-HSP

High speed : ensure that this setting is appropriate for the motor and the application.

LSP to tFr bFr

-ItH

Current used for the motor thermal protection. Set ItH to the nominal current marked on the motor rating plate. To disable thermal protection, increase the value to the maximum (ntH displayed).

0,50 to 1,15 In (1)

In (1)

The parameters in shaded boxes appear if the corresponding functions have been configured in the drC- or I-O- menus.

SEt-

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Settings

Adjust menu (continued)

(1) In is the nominal speed controller current shown in the catalogue and on the speed controller rating plate.

Code Assignment Adjustment

range

Factory setting

-UFr

Optimizes the torque at very low speed 0 to 100 % 20

-SLP

Adjusts the slip compensation around the value set by the nominal motor speed. This parameter only appears if parameter UFt = n in the drC- menu.

0.0 to 5.0 Hz According to controller output

-FLG

Frequency loop gain Linked to the inertia and the resistive torque of the driven mechanism :

- machines with high resistive torque or high inertia : gradually reduce the gain in the range 33 to 0

- machines with fast cycles, low resistive torque and low inertia : gradually increase the gain in the range 33 to 100. Too high a gain may result in operating instability.

0 to 100 % 33

-IdC

Level of DC injection braking current After 5 seconds the injection current is peak limited at 0.5 Ith if it is set at a higher value.

0.1 ItH to

In (1)

0.7 In (1)

-tdC

DC injection standstill braking time If the time is increased to 25.5 s, "Cont" is displayed. The DC injection is then continuous at standstill.

0 to 25,4 s Cont.

0.5 s

-JPF

Skip frequency prevents prolonged operation at a frequency range of 2 Hz around JPF. This function prevents a critical speed which leads to resonance. Setting the function to 0 renders it inactive.

0 to HSP 0 Hz

-JOG

Jog operating frequency 0 to 10 Hz 10 Hz

-rPG

PI regulator proportional gain 0,01 to 100 1

-rIG

PI regulator integral gain 0.01 to 100 / s 1 / s

-FbS

PI feedback multiplication coefficient 0.1 to 100 1

-PIC

Reversal of the direction of correction of the PI regulator : no : normal, YES : reverse

no - YES no

The parameters in shaded boxes appear if the corresponding functions have been configured in the drC- or I-O- menus.

SEt-

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Settings

Adjust menu (continued)

(1) In is the nominal speed controller current shown in the catalogue and on the speed controller rating plate.

Code Assignment Adjustment

range

Factory setting

-SP2

2 nd preset speed LSP to HSP 10 Hz

-SP3

3 rd preset speed LSP to HSP 15 Hz

-SP4

4 th preset speed LSP to HSP 20 Hz

-SP5

5 th preset speed LSP to HSP 25 Hz

-SP6

6 th preset speed LSP to HSP 30 Hz

-SP7

7 th preset speed LSP to HSP 35 Hz

-Ftd

Motor frequency threshold beyond which the contact on relay R2 closes 0 to HSP bFr

-Ctd

Current threshold beyond which the contact on relay R2 closes 0,1 ItH to

1.5 In (1)

-ttd

Motor thermal state threshold beyond which the contact on relay R2 closes 1 to 118 % 100 %

-tLS

Low speed operating time Following operation at LSP for a defined period, a motor stop is requested automatically. The motor restarts if the frequency reference is greater than LSP and if a run command is still present. Caution : value 0 corresponds to an unlimited period

0 to 25.5 s 0 (no time

limit)

The parameters in shaded boxes appear if the corresponding functions have been configured in the drC- or I-O- menus.

SEt-

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Settings

Display menu

(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. The second press on ENT exits the SUP- menu.

The following parameters can be accessed, with the speed controller stopped or running.

Code Parameter Unit

-FrH

Display the frequency reference Hz

-rFr

Display the output frequency applied to the motor Hz

-SPd

Display the value calculated by the speed controller (rFr x SdS) –

-LCr

Display the motor current A

-OPr

Display the power supplied by the motor, estimated by the speed controller. 100 % corresponds to the nominal speed controller power.

-ULn

Display the line voltage V

-tHr

Display the motor thermal state : 100% corresponds to the nominal thermal state. Above 118%, the speed controller triggers an OLF fault (motor overload)

-tHd

Display the speed controller thermal state : 100% corresponds to the nominal thermal state. Above 118%, the speed controller triggers an OHF fault (drive overheated) It can be reset below 70%.

-LFt

View the last fault which appeared. If there has been no fault, the display shows : noF. –

-CPU

Speed controller software version –

-COd

Parameter which can only be seen and accessed using a remote display module option or PC software. Access code : 0 to 9999. Value 0 (factory setting) does not prevent access. All other values lock access to the SEt-, drC- and I-O- menus. To lock access to the speed controller, the code can be incremented using (

s t

) then saved using (ENT).

• Do not forget to make a note of the code, as once it has been saved, it is no longer displayed.

• If a code other than 0 is configured, access to the menus requires a remote display module option or PC software.

To access the menus on a speed controller which is locked by a code, the code can be incremented using (

s t

) and confirmed with (ENT) :

• If the correct access code is displayed, it flashes, and code 0 can then be configured in order to access the menus.

• If an incorrect code is displayed, the speed controller returns to the initial display (rdY).

SUP-

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Settings

Display menu

(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

- FSt : Fast stop command

SUP-

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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).

- Remove any dust from the speed controller.

Assistance with maintenance

If there is a problem when starting up or during operation, firstly check that the recommendations relating to the environment, mounting and connections have been followed.

The first fault detected is memorized and displayed on the screen : the speed controller locks and fault relay R1 is tripped.

Clearing faults

Switch off the speed controller power supply in the event of a fault which cannot be reset. Wait for the LED and the display to go off completely. Find the cause of the fault in order to correct it. Restore the power supply : this will clear the fault if it has disappeared.

In some cases there may be an automatic restart after the fault has disappeared if this function has been programmed.

Display menu :

This is used to prevent and find the causes of faults by displaying the speed controller status and its current values.

Spares and repairs :

Consult BLEMO Frequenzumrichter product support.

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Faults - Causes - Remedies

Speed controller does not start, no fault displayed

• 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.

• On power-up or a manual fault reset or after a stop command, the motor can only be powered once the "forward", "reverse" and "DC injection stop" commands have been reset. If they have not been reset, the speed controller will display "rdY" but will not start. If the automatic restart function is configured (parameter Atr in the drC menu), these commands are taken into account without a reset being necessary.

Faults which cannot be reset automatically

The cause of the fault must be corrected before resetting by powering down and then powering up.

Fault

Probable cause

Remedy

-OCF

overcurrent

- ramp too short

- inertia or load too high

- mechanical blocking

- Check the settings.

- Check the motor/speed controller/load sizing.

- Check the state of the mechanism.

-SCF

motor short-circuit

- short-circuit or earthing at the speed controller output

- Check the cables connecting the speed controller to the motor, and the insulation of the motor.

-InF

internal fault

- internal fault - Check the environment (electromagnetic compatibility).

- Check that the "local control" option has not been connected or disconnected with the controller powered up.

- Send the speed controller to be checked/repaired.

-tnF

auto-tuning fault

- special motor or motor whose

power is not suitable for the speed controller

- Use the L or the P ratio.

-EEF

internal fault

- internal fault - Send the speed controller to be checked/repaired.

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Faults - Causes - Remedies

Faults which can be reset with the automatic restart function, after the cause has disappeared

Fault

Probable cause

Remedy

-OHF

speed controller overload

- I

t too high or

- speed controller temperature too high

- Check the motor load, the speed controller ventilation and the environment. Wait for the controller to cool before restarting.

-OLF

motor overload

- tripped by I

t motor being too high - Check the setting of the motor thermal protection,

check the motor load. Wait for the controller to cool before restarting.

-OSF

overvoltage in steady state or during acceleration

- line voltage too high

- disturbed line supply

- Check the line voltage.

-USF

undervoltage

- line supply too low

- transient voltage dip

- damaged load resistor

- Check the voltage and the voltage parameter.

- Reset.

- Send the speed controller to be checked/repaired.

-ObF

overvoltage during deceleration

- braking too sudden or driving load

- Increase the deceleration time.

- Install a braking resistor if necessary.

- Activate the brA function if it is compatible with the application.

-PHF

motor phase phase failure

- speed controller incorrectly supplied or a fuse blown

- transient phase fault

- 3-phase ER21 used on a single phase line supply

- Check the power connection and the fuses.

- Reset

- Use a 3-phase line supply.

-OPF

motor phase failure

- loss of a phase at the speed controller output

- Check the connections from the speed controller to the motor.

-SLF

serial link failure

- incorrect connection on the speed controller connector

- Check the serial link connection on the speed controller connector.

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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



yes



Menu (inputs/outputs)

Menu (drive)

Code

Factory setting Customer setting

Code

Factory setting Customer setting

-tCC

-LI2

rrS

-LI3

PS2

-LI4

PS4

-AIC

SAI

-CrL

4 mA mA

-CrH

20 mA mA

-AO

rFr

-AOt

0 mA mA

-r2

SrA

-Add

-bdr

19.2

Code

Factory setting

Customer setting Code

Factory setting

Customer setting

-UnS

V V

-FrS

Hz Hz

-tUn

-tFr

Hz Hz

-UFt

-brA

YES

-Frt

0 Hz Hz

-SFr

4.0 kHz kHz

-nrd

YES

-Atr

-OPL

YES

-IPL

YES

-StP

-FLr

-drn

-SdS

drC-

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Configuration/Settings Tables

Menu (settings)

Code

Factory setting

Customer setting Code

Factory setting

Customer setting

-rPI

0.0 % Control

-rOt

For Control

-ACC

3.0 s s

-dEC

3.0 s s

-AC2

5.0 s s

-dE2

5.0 s s

-LSP

0.0 Hz Hz

-HSP

Hz Hz

-ItH

A A

-UFr

20 % %

-SLP

Hz Hz

-FLG

33 % %

-IdC

A A

-tdC

0.5 s s

-JPF

0 Hz Hz

-JOG

10 Hz Hz

-rPG

-rIG

1 /s /s

-FbS

-PIC

-SP2

10 Hz Hz

-SP3

15 Hz Hz

-SP4

20 Hz Hz

-SP5

25 Hz Hz

-SP6

30 Hz Hz

-SP7

35 Hz Hz

-Ftd

Hz Hz

-Ctd

A A

-ttd

100 % %

-tLS

0.0 s s

The parameters in shaded boxes appear if the corresponding functions have been configured in the drC- or I-O- menus.

SEt-

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: [email protected]