Bonfiglioli Vectron EM-ENC-05 Full Function Expansion Module Integration Guide

Smax=three hundred thousand Hz×sixty s/min nmax

S max=300000Hz× n max 60s/min 

Minimum line requirement: To ensure low-speed stability, the signal should be updated at least every 2ms

Smin=five hundred Hz×sixty s/min four×nmin

S min=500Hz× 4×n min 60s/min

2.4 Actual speed source switching

Select the feedback source for the speed controller through Actual Speed Source 766 (Chapter 5.3.4):

1: Use the encoder input of the basic device (default)

2: Use the second encoder input of EM-ENC-05

Chapter 3: Bipolar Analog Input Configuration

The analog input of EM-ENC-05 provides a bipolar range of ± 10V/± 20mA, 12 bit resolution, and can be flexibly configured through hardware and software.

3.1 Voltage/Current Mode Switching (DIP Switch S3) (Chapter 5.1.2)

S3=OFF (right side): Voltage input mode (± 10V, input impedance 100k Ω)

S3=ON (left side): Current input mode (± 20mA, input impedance 250 Ω)

3.2 Programmable signal characteristic curve

The process of simulating input mapping to reference values is defined by two linear characteristic curves (Chapter 5.1.3):

Characteristic Point X1/Y1 564/565: Coordinates of the first point (input signal% → output reference%)

Characteristic Point X2/Y2 566/567: Second Point Coordinates

3.3 Operation Mode 562 (Chapter 5.1.4)

1- Bipolar: Mapping complete ± 100% input to ± 100% output.

11- Monopolar: The negative input signal is mapped to 0.

21- Monopolar 2-10V/4-20mA: Suitable for standard industrial signals, the lower limit of the input range is fixed at 20% (2V/4mA).

101- Bipolar Absolute Value: Bipolar input is mapped to unipolar output (in absolute value).

3.4 Tolerance Bands and Error Behavior (Sections 5.1.6, 5.1.7)

Tolerance Band 560: Set zero dead zone to prevent frequent direction switching caused by noise.

Error/Warning Behavior 563：

1 (Warning): A warning is issued when the signal is below 1V/2mA.

2 (Stop): When the signal is lost, perform the stop action 2 to slow down and stop the machine.

3 (Fault tripping): Immediately stop freely and report an error when the signal is lost.

3.5 Analog Input Calibration (Chapter 5.1.8)

Perform two-stage calibration through Adjustment 568:

Apply 0V (or 0mA) input and execute Adjustment=1.

Apply 10V (or 20mA) input and execute Adjustment=2.

Chapter 4: Bipolar Analog Output Configuration

EM-ENC-05 provides ± 10V bipolar analog output, which can flexibly map different actual values (Chapter 5.2).

4.1 Operation Mode 584

0-Off: Output off (0V, used for calibration)

41- EM-S1INA, absolute value: Output the absolute value of the analog input (0~10V)

100-10V: Fixed output of 10V (for calibration)

101-133: Signed output mode (-10V~+10V)

201-254: Absolute actual value output with a range of 2V~10V (including wire breakage monitoring)

4.2 Zero bias and amplification factor (Chapter 5.2.4)

Offset 585: Zero offset (percentage of ± 10V full-scale, ± 100%)

Amplification 586: Magnification factor (5%~1000%)

Calibration Example:

Select mode 0-Off, measure the output voltage, and fill in Adjustment 587.

Select mode 100-10V, measure the output voltage, and fill in Adjustment 587 again.

Repeat validation, and if the deviation is significant, recalibrate (with an optimal accuracy of approximately ± 40mV).

Chapter 5: CAN System Bus and Virtual Link

EM-ENC-05 integrates the complete CAN system bus function (Chapter 4), based on the CANopen protocol (CiA DS301), to achieve real-time data exchange and distributed control between frequency converters.

5.1 Node Address and Baud Rate Configuration

Node-ID 900 (Chapter 4.5): Set the node address (range -1~63). -1 is disabled (factory default), 0 is master mode. Only one main station is allowed in the network.

Baud Rate 903 (Chapter 4.4): Supports baud rate settings from 50 kbps to 1000 kbps.

5.2 Bus Terminal Resistance Configuration (DIP Switches S1 and S2) (Chapter 4.1)

Passive terminal: S1=ON, S2=OFF (standard 120 Ω terminal)

Active terminal: S1=ON, S2=ON (improves signal edge through bias circuit, suitable for long-distance bus)

Key rule: Active terminals are only allowed to be activated at one location in the network, and other terminal nodes must use passive terminals.

5.3 NMT State Machine and Network Startup Sequence

EM-ENC-05 follows the CANopen NMT state machine (Sections 4.7, 4.8.1):

Pre Operational: Power on default state, only SDO is available.

Operational: Activate PDO communication to achieve real-time data exchange.

Stopped: All communication is prohibited.

The master station switches all slave stations to the Operational state by sending the Start Remote Node command (command word 0x01, node ID 0x00 broadcast).

5.4 PDO Channel and Virtual Link

EM-ENC-05 supports three sets of PDO channels (Chapter 4.11.5) and achieves data mapping through the "source target" linking method:

TxPDO (send): Select the data source (control word, reference value, analog input value, etc.) through parameters 946-977.

RxPDO (receive): Map the received data to available source numbers (700-729).

Chapter 6: Reference Channel Expansion

Both the analog input and encoder input of EM-ENC-05 can be used as reference value sources for the frequency converter (Chapter 5.4). By selecting Reference Frequency Source 475: