ELM3004-0000

What does this module do?

It is a 4-channel analogue input terminal designed for measuring voltage signals, with an input range up to ±30 V. Each channel can be used independently for capturing analogue measurements in an EtherCAT terminal station.

How many analogue input channels are available?

There are four analogue input channels, allowing four separate voltage signals to be measured within one terminal.

What signal types can be connected?

It is intended for analogue voltage measurement. Typical applications include reading sensor conditioners or other devices that provide a voltage output within the supported range (up to ±30 V).

What is the maximum input range?

The terminal is specified for voltage inputs up to ±30 V.

Is this suitable for measuring both positive and negative voltages?

Yes. The ±30 V range indicates it can measure bipolar voltage signals (both positive and negative), provided the connected signal remains within the specified limits.

Can I use the channels for different signals at the same time?

Yes. The four channels are intended to be used independently, so you can measure four separate voltage sources simultaneously (within the allowable input range and wiring rules).

Where is this terminal typically used?

It is commonly used in industrial measurement and automation panels where analogue voltage signals need to be acquired via an EtherCAT terminal station, for example in test rigs, monitoring systems, and machine instrumentation.

Does the terminal require shielded cabling?

Shielding is often recommended in industrial environments to reduce electrical noise on analogue signals. A compatible shield connection accessory is available for the ELM series (ZS9100-0002, for cable shield diameter 7 mm) when you need a structured shield termination.

How is it integrated into an EtherCAT station?

It is installed as a terminal within an EtherCAT I/O slice/terminal assembly. Once mounted and wired, it is detected as part of the EtherCAT station and mapped as analogue input channels in the controller configuration.

What should I consider when selecting a sensor or signal source for it?

Confirm that the sensor or source provides a voltage output that stays within ±30 V under all operating conditions, and account for noise, grounding, and cable routing so the measured signal remains stable and accurate.

Can it be used for high-noise environments such as near motors and drives?

Yes, but good installation practice is important: use appropriate shielding where needed, keep analogue signal cables separated from power cables, and ensure proper grounding to minimise interference.

Does it occupy multiple channels in the controller I/O map?

Yes. It appears as four separate analogue input values (one per channel) in the I/O mapping. In many configurations you can also access additional status information per channel, depending on the controller setup and mapping options.