Bonfiglioli Vectron EM-IO-04 module KTY temperature measurement and digital port configuration

2.3 Temperature sensor type selection (dip switch S3)

S3 Position Mode Sensor Type Measurement Capability

Right side (OFF) EM-MPTC PTC thermistor (DIN 44081) or bimetallic temperature sensor (normally closed contact) limit monitoring (switch quantity)

Left (ON) EM-KTY KTY84/130 temperature sensor continuous temperature measurement (analog quantity)

Motor temperature monitoring - detailed explanation of core differentiation functions

The most significant feature of EM-IO-04 is its dual temperature monitoring capability: it supports both PTC switch limit protection and KTY continuous temperature measurement.

3.1 PTC/bimetallic temperature sensor limit monitoring (S3=right side)

When S3 is placed on the right side (EM-MPTC mode), the module evaluates the resistance change of PTC thermistor or bimetallic temperature sensor (normally closed contact). The rated response resistance value of PTC is>2.4k Ω (in accordance with DIN 44081).

Operation mode (parameter 570) - consistent with EM-IO-02/03:

Application of Mode Function Engineering

Only display a warning when overheating occurs, without triggering a shutdown

12. Immediately report fault F0400 and stop the machine freely

13 fault shutdown, delayed for 1 minute, short-term overheating tolerance

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

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

3.2 KTY Temperature Sensor Continuous Temperature Measurement (S3=Left) - Core New Function

This is the core function that distinguishes EM-IO-04 from EM-IO-01/02/03. When S3 is placed on the left side (EM-KTY mode), the module evaluates the KTY84/130 temperature sensor and achieves continuous temperature measurement from -20 ° C to 200 ° C.

Technical specifications of KTY84/130 sensor:

Resistance value at 100 ° C: 1000 Ω

Temperature coefficient of resistance: 0.61%/K (at 100 ° C ambient temperature)

Resistance range: 424 Ω~1722 Ω (corresponding to measurement range of -20 ° C~200 ° C)

Temperature measurement parameterization:

Select mode 22- Temp. Meas. with EM-KTY through parameter 465 (Operation Mode) to enable KTY temperature measurement.

The actual temperature value can be read through parameter 226 (Winding Temperature).

The maximum allowable winding temperature is set through parameter 617 (max. Temp. Windings), with a range of 50 ° C~200 ° C and a factory value of 150 ° C.

KTY temperature over limit response mode (parameter 570):

Mode Function Engineering Description

Only display a warning when the maximum. Temp. Windings are exceeded

22 fault shutdown immediately reports fault F0400

23 fault shutdown, delayed for 1 minute, short-term over temperature tolerance

24 fault shutdown, delayed for 5 minutes, suitable for motors with high thermal inertia

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

The engineering value of KTY temperature measurement:

Continuous temperature display: Operators can monitor the temperature of the motor winding in real time and predict the risk of overheating

Optimization of control parameters: Temperature values can be used to synchronize temperature related control parameters (such as stator resistance compensation in magnetic field orientation control)

Trend analysis: Judging the motor load status or cooling system efficiency through temperature change trends

Accurate protection: Compared to PTC's switch protection, KTY can achieve more precise over temperature protection threshold setting

Digital port configuration

4.1 Port mode switching

The digital port of terminal X410B. 3 can switch function through parameter 558 (Operation Mode):

Mode Function Description

0-input digital input can be used as a control signal source (such as start/stop)

1-output digital output can be used as a status indicator or to control external devices

When used as a numerical input (mode 0):

The operation mode is selected through parameter 559 (Operation Mode Output)

Can be linked to any parameterized input function inside the frequency converter

Signal source numbers: 320 (EM-S1IND), 520 (EM-S1IND inverted)

As a digital output (Mode 1):

The operation mode selection is the same as the digital output of the inverter body

Output characteristics: High level=24V, Imax=40mA, PLC compatible

PNP/NPN Logic Selection - Expanding Application Flexibility

The digital inputs EM-S2IND (X410A. 3) and EM-S3IND (X410A. 6) of EM-IO-04 support selecting PNP (high level effective) or NPN (low level effective) logic through parameters, which is the only module in the EM-IO series that has this function.

Logical selection (through numerical input operation mode):

The mode function is applicable to sensor types

0-HIGH-switching PNP input, high level (≥ 13V) effective standard PNP type proximity switch, photoelectric sensor

1-LOW switching NPN input, low level (≤ 5V) effective NPN sensor, PLC output

Signal source number:

EM-S2IND: 321 (positive logic)/521 (negative logic)

EM-S3IND: 322 (positive logic)/522 (negative logic)

Engineering value: This feature enables EM-IO-04 to be directly compatible with the vast majority of industrial sensor types on the market, without the need for external level conversion circuits, significantly simplifying on-site wiring.