Bonfiglioli Vectron EM-IO-03 Expansion Module Dual Analog Output and PTC Configuration

2.3 Analog input voltage/current mode switching

The dip switch S3 on the module is configured with analog input signal type:

S3=OFF (right side): Voltage signal (± 10V)

S3=ON (left side): Current signal (± 20mA)

S1 and S2 switches are used for configuring the terminal resistance of the system bus.

Detailed explanation of dual-mode analog output configuration

3.1 Voltage output (EM-S1OUTA) configuration

The voltage output is located at terminal X410B. 4, with a range of ± 10V and low output impedance, suitable for connecting devices with high impedance inputs.

Operation mode (parameter 584):

Mode Function Application Scenarios

0-Off output off (0V) debugging or disabling

41 Absolute value EM-S1INA analog input signal absolute value, 0~10V monitoring input signal

100-10V fixed 10V output calibration

101~141 signed mode, -10V~10V bidirectional speed/position given

201~254 actual absolute value, 2~10V industrial instrument output

Zero adjustment (parameter 585) and amplification factor (parameter 586):

Offset: Set zero offset as a percentage of 10V full scale (-100%~+100%)

Magnification factor: Set the gain as a percentage of full scale (5%~1000%)

Calibration steps:

Set parameter 584=0 (Off), measure output voltage, input parameter 587

Set parameter 584 to 100 (10V), measure the output voltage, and input parameter 587 again

Return parameter 584=0, verify if the output is 0V (± 40mV accuracy)

3.2 Current Output (EM-S2OUTA) Configuration - Core Differentiation Function

The current output is located at terminal X410A. 3, with a range of 0 (4)~20mA, suitable for connecting industrial standard current loop equipment such as valve positioners, recorders, PLC analog input modules, etc. Its overload and short-circuit protection characteristics ensure the safety of on-site wiring.

Operation mode (parameter 525):

Mode Function Application Scenarios

0-Off output off (0mA) debugging or disabling

41 Absolute value EM-S1INA analog input signal absolute value, 0~20mA monitoring input signal

100-20mA fixed 20mA output calibration

201~254 actual absolute value, 4~20mA standard industrial instrument output

Key Tip: Modes 201~254 limit the output range to 4~20mA instead of 0~20mA, which is particularly important for industrial applications that require detecting wire breaks - when the output is below 4mA, the receiving device can recognize it as a line fault.

Zero adjustment (parameter 526) and amplification factor (parameter 527):

Offset: Set zero offset as a percentage of 20mA full scale (-100%~+100%)

Magnification factor: Set the gain as a percentage of full scale (5%~1000%)

Calibration steps (similar to voltage output, using parameter 528):

Set parameter 525=0 (Off), measure output current, input parameter 528

Set parameter 525=100 (20mA), measure the output current, and input parameter 528 again

Return parameter 525=0, verify if the output is 0mA (± 16 μ A accuracy)

3.3 Typical Applications of Dual Analog Output

The dual analog outputs of EM-IO-03 can work simultaneously, achieving the following typical application scenarios:

Application scenario Voltage output (± 10V) Current output (4-20mA)

Master slave speed synchronization, main frequency converter speed given, slave frequency converter speed feedback

Process control valve opening instruction flow/pressure transmitter signal

Remote monitoring speed indication, current/torque indication

Test platform bidirectional speed given unidirectional load simulation

PTC motor temperature monitoring

EM-IO-03 inherits the PTC temperature monitoring function of EM-IO-02 and connects a PTC sensor that complies with DIN 44081 through terminal X410B. 1-2.

4.1 Operating Mode (Parameter 570)

Mode Function Engineering Description

Only display warning when overheating, without triggering shutdown

12. Immediately report fault F0400 and stop the machine freely

13 fault shutdown, delay for 1 minute, short-term overheating tolerable, continuous overheating before shutdown

14 fault shutdown, delayed for 5 minutes, suitable for processes with overheating during the start-up phase

15 fault shutdown, with a maximum tolerance delay of 10 minutes

Fault confirmation: F0400 can be confirmed through parameter 34 (Program) or a digital input signal linked to parameter 103.

4.2 Continuous temperature measurement through analog input

In addition to PTC switch monitoring, EM-IO-03 also supports continuous temperature measurement through analog input EM-S1INA (parameter 465, mode 2):

Temperature range: 0~200 ° C mapped to 0~10V or 0~20mA

Application scenario: Connecting PT100 transmitter to achieve full temperature monitoring throughout the process

CAN system bus configuration

The system bus function of EM-IO-03 is consistent with EM-IO-01/02, based on the CANopen protocol framework (CiA DS 301).

5.1 Terminal resistor configuration (dip switch S1/S2)

Passive terminal (S1=ON, S2=OFF): Conventional terminal matching

Active terminal (S1=ON, S2=ON): Improve the shape of CAN signal edges

Factory default: S1 and S2 are both OFF

5.2 Node ID and Baud Rate

Parameter Description Range Factory Value

900 Node-ID-1~63-1 (disabled)

903 Baud-Rate 3~8（50~1000 kBaud） —

Set rules:

Node ID=-1: System bus disabled

Node ID=0: defined as the main station (only one is allowed)