BLEMO ER21 Manual de usuario
BLEMO Frequenzumrichter
Frequency Inverter
ER21
user manual
46
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
a
mm b
mm c
mm G
mm H
mm 2 Ø
mm 4 Ø
mm weight
kg
-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 ∆b
mm Ø
mm
-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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