With the new ER41 series from BLEMO, you get a frequency converter for all applications in mechanical and plant engineering.
Frequency converters for speed control of DS asynchronous motors and synchronous motors, 0.75 to 2600 kW, 380 to 690 V, 3~Protection class IP21 to IP55.
Put together your desired configuration and request a quote directly. If you require higher performance, low-harmonics functions, or 690 V, simply contact us by email.
The ER41 is available as a control cabinet version ER41 K with protection class IP21 or IP23, and as a protected version ER41 G with protection class IP54 or IP55. Depending on requirements, we supply the devices as V1 without load break switch or as V2 with integrated load break switch.
All devices are delivered ex works with painted circuit boards. From 90 kW upwards, tinned copper rails for aggressive air are also included; these are optional for lower power ratings. This allows the ER41 to be designed to suit the environment and remain reliable even in continuous operation.
The ER41 is a new product series from BLEMO® that can be used for all applications in mechanical and plant engineering. Below you can configure the ER41 according to your ideas and request a quote directly from us.
If you are interested in higher power ratings, low harmonics, or 690V, please send us your request by email to info@blemo.com.
A BLEMO frequency converter can be controlled using a Siemens PLC via Profinet or Profibus-DP.
This requires an additional communication card, which you will find in the frequency converter catalog.
Please note that not all frequency converters support this bus communication.
Connection to Profibus-DP or Profinet is possible with the ER24 and ER41.
Minimum settings for bus operation (direct control of the QW addresses of the ER24 / ER41):
– First, set up the slave ER24 / ER41 xyz in the TIA Portal. Please install the GSD or GSDxml device file beforehand.
– Then select a telegram type in the HW configuration of the ER24 / ER41 and move it to the I/O field.
In this example, we are using telegram 102, which consists of 6 PZDs.
PZD stands for “process cyclic data.” PZDs are data that are to be exchanged cyclically.
This includes status words, target speeds, etc. (see image “EA assignment of PZDs”).
The following four channels are already preset and do not need to be changed. The result during operation can be seen in the “Observation table” image
– The first reserved QW of the PZD address must be used to send the control word (according to Drivecom standard: 16#0006, Stop 16#0007, Motor run 16#000F)
– The second double word sends the target speed (rpm).
– The first IW is read out to read the status word of the ER24 / ER41s frequency converter.
– The second double word is read out to read the current ACTUAL speed (rpm).
– The words should then be declared as variables (see image “Variable declaration”).
– In the frequency converter, the setpoint source fieldbus must be set (see image “Settings ER24 / ER41 setpoint source bus”).
– The addressing of the ER24 / ER41 in the bus must also be set. This naturally differs depending on the bus type.
For Profibus-DP, the address is set to 1-126 (see image “Settings Profibus Addressing ER24 / ER41”),
for Profinet, an address is assigned via PLC: DCP or an address setting in the ER24 / ER41 menu: fixed IP (see image “Settings Profinet Addressing ER24 / ER41“).
+10V on AI1 and ground on COM.
In principle, it is possible to operate a low-power motor with a higher-power frequency converter.
This depends on the ratio between the motor and converter power.
Experience shows that the ratio should not exceed 1:4.
For example, it is not recommended to operate a 0.75 kW motor with a 30 kW BLEMO frequency converter.
This combination can be used for testing purposes, but the motor phase monitoring must be deactivated.
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