mycnc:mycnc_et7
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mycnc:mycnc_et7 [2019/09/12 10:36] – ivan | mycnc:mycnc_et7 [2021/05/10 16:46] – ivan | ||
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===== myCNC-ET7 CNC controller ===== | ===== myCNC-ET7 CNC controller ===== | ||
+ | |||
+ | ^^myCNC-ET7 controller specifications^^ | ||
+ | | Number of motor outputs | 6 | | ||
+ | | Motor driver outputs | pulse-dir, differential line driver outputs compatible with EIA RS-422 Standard | | ||
+ | | Maximum pulse frequency | 3 MHz | | ||
+ | | Binary inputs | 16x galvanic isolation, PNP/NPN sensor compatible | | ||
+ | | Encoder inputs | 3x incremental encoder inputs, | ||
+ | | Binary outputs | 5x - pluggable relays 10A, NO/NC contacts; 11x - open collector, 24V, 0.25A | | ||
+ | | PWM outputs | 3x - open collector, 24V, 0.25A | | ||
+ | | ADC inputs | 2x - 0...10V range, differential inputs, fully galvanic isolated (for plasma arc voltage measure, THC control), 6x - 0...3V range | | ||
+ | | DAC output | 1x - 0...10V (for spindle speed control and relative applications)| | ||
+ | | RS485/RS422 | 1x RS422 full duplex serial communication OR 2x RS485 half-duplex serial communication | | ||
+ | | External operator panel connector | up to 25 external keys, up to 2 rotary encodersup to 2 double-axes joysticks OR up to 4 potentiometers (shared with 4x ADC inputs) | | ||
+ | | Power supply outputs for control computer | 2x DC-DC converters 5V 1.5A | | ||
==== ET7 top view ==== | ==== ET7 top view ==== | ||
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Power Supply 24V DC and +24V and GND pins are shown on a picture below. | Power Supply 24V DC and +24V and GND pins are shown on a picture below. | ||
- | {{hardware:et7: | + | {{:mycnc: |
+ | //NOTE: Depending on the board revision version, the +5/+5V power supply in the top left corner may actually be | ||
+ | a +5/+12V power supply (on older boards).// | ||
==== Pulse-Dir outputs ==== | ==== Pulse-Dir outputs ==== | ||
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{{hardware: | {{hardware: | ||
- | Encoder inputs connector pinout is shown on a picture | + | Encoder inputs connector pinout is shown in the diagram below: |
- | {{hardware:et7: | + | {{:mycnc: |
+ | |||
+ | //NOTE: Depending on the board revision version, the +5/+5V power supply in the top left corner may actually be | ||
+ | a +5/+12V power supply (on older boards).// | ||
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myCNC-ET7 controller has 8 ADC inputs. | myCNC-ET7 controller has 8 ADC inputs. | ||
* 6 ADC inputs 0-5V range | * 6 ADC inputs 0-5V range | ||
- | * 2 ADC inputs with galvanic isolation for save and convenient connection of Arc Voltage signal from Power station. Galvanic isolated ADC inputs are 0..10V, so High Voltage Arc signal **CANNOT** be connected directly to ADC inputs, **voltage divider is NEEDED**. | + | * 2 ADC inputs with galvanic isolation for save and convenient connection of Arc Voltage signal from Power station. Galvanic isolated ADC inputs |
The 0-5 V ADC inputs schematic is shown below: | The 0-5 V ADC inputs schematic is shown below: | ||
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{{: | {{: | ||
- | Non-isolated ADC inputs have a 0...5V Range. Connector with non-isolated ADC inputs also has the GND and +5V DC output pins for convenient potentiometer connection. Picture below shows an example for potentiometer connected to ADC2 input. | + | Non-isolated ADC inputs |
{{: | {{: | ||
- | < | + | < |
+ | The silk printing naming for inputs ADC0 and ADC01 are switched. | ||
Please consult the above schematics for the ADC0/ADC1 input locations.</ | Please consult the above schematics for the ADC0/ADC1 input locations.</ | ||
+ | |||
+ | A voltage divider can be used for plasma cutting arc. In the range of 0-300V, a voltage divider with a 1:25 ratio may be used (a 1:20 ratio can be used for voltages up to 240V). An example diagram for voltage divider connection is available below: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | For example, using the standard // | ||
+ | |||
+ | Similarly, for ADC0 (with a range of 0-5V), a voltage divider with a 1:50 ratio is required (for voltages up to 300V). On older models of the myCNC-ET7 controller (prior to 2020), the range on the ADC0 inputs was similarly 0-12V, however due to user convenience the two ADC ports can now be used for a variety of power sources and voltage dividers. | ||
==== Jumpers J1, J2, J3 and J4 ==== | ==== Jumpers J1, J2, J3 and J4 ==== | ||
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==== Connection Examples ==== | ==== Connection Examples ==== | ||
+ | |||
+ | ===Stepper driver connection (4 axes)=== | ||
+ | |||
+ | {{: | ||
+ | |||
=== 3-wire NPN sensor connection example (external power supply)=== | === 3-wire NPN sensor connection example (external power supply)=== | ||
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11. If " | 11. If " | ||
- | 12. Remove all jumpers (J4, J5) and restart the board. | + | 12. Remove all jumpers (J5, J6) and restart the board. |
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{{: | {{: |