Beckhoff EP23xx EtherCAT Box Selection Troubleshooting

Object 8001: 0n - Safe State Value

The specific values for defining the safety state are: False corresponds to output disconnection (0V), and True corresponds to output conduction (24V).

Engineering suggestion: For hazardous actuators (such as holding brakes and emergency stop valves), the safety status should be activated and the safety value should be set to False to ensure that the load automatically loses power when communication is interrupted.

3.2 Behavior during output short circuit

EP2316 can detect short circuits to ground or power in the output channel. Two modes can be configured through object F800:01- Disable shut off:

False (default): If any output is short circuited, all outputs of the module will be immediately latched off. After troubleshooting, it is necessary to reactivate through the Reset outputs bit (rising edge) in the process data.

True: Only the faulty channel itself is turned off, while other channels are working normally. After the short circuit is eliminated, the channel will automatically resume output without the need for manual reset.

In addition, object F800:11- Switch off time (default 1000 ms) defines the time the module waits before attempting to reconnect the output after a short circuit occurs. During the waiting period, we will check if the short circuit has been eliminated.

3.3 Peripheral power supply UpUp

Behavior when missing

The high level of digital output is determined by UpUp

Provide. when UpUp

When lost, even if the output process data is still "1", the actual output pin is also 0V. The module will detect this "output set value does not match the actual level" as a fault and set the Diag Input n and Error Channel y of the corresponding channel in the process image.

Reset method:

Manual: Send a rising edge to the Reset outputs variable.

Auto: Set F800:01=TRUE (note that this will also change the short-circuit behavior mode). when UpUp

After recovery, all outputs are automatically reactivated.

Special conditions for installation in explosion-proof areas (ATEX/IECEx)

If the module needs to be installed in Zone 2 (gas) or Zone 22 (dust) explosive environments, the following mandatory requirements must be followed (from section 4.4 of the document):

Mechanical protection

The module must be installed inside the BG2000-0000 protective casing to prevent mechanical shock and electrostatic discharge risks.

ambient temperature

The allowable working range is 0 ℃~+55 ℃ (standard products are -25 ℃~+60 ℃). Beyond this range, it cannot be used in explosion-proof areas.

Transient overvoltage limit

Measures must be taken to prevent the rated voltage from being superimposed by transient disturbances exceeding 40%, such as those caused by the shutdown of large contactors. Suitable surge suppressors can be used.

Electrostatic protection

The surface of the shell can only be wiped with a damp cloth, and dry wiping is strictly prohibited to avoid static electricity accumulation and ignition in hazardous environments.

Live insertion and removal restrictions

Bus plugs, sensor/actuator connectors, and address dip switches must be plugged in or adjusted only when the power supply is disconnected or when there is no explosive gas confirmed.

Temperature at cable entry point

If the temperature at the cable inlet exceeds 70 ℃ or the branch point exceeds 80 ℃, a cable with higher temperature resistance must be selected.

UV protection

The equipment must not be exposed to ultraviolet radiation (such as direct sunlight) and must be installed in a suitable protective cover.

After meeting the above conditions, the module will be marked with Ex ec IIC T4 Gc or Ex tc IIIC T135 ° C Dc.

Key points and common problems of installation wiring

5.1 Connector tightening torque

Connector type torque

M8 0.4 Nm

M12 0.6 Nm

7/8″ 1.5 Nm

It is recommended to use a Beckhoff ZB8801-0000 torque wrench with the corresponding socket to avoid damaging the plastic casing due to excessive torque.

5.2 Functional Earth

For EPxxxx-002x and EPxxxx-0042 wide body modules, both mounting holes are also functional grounding connection points. The module must be grounded using a low impedance method (such as directly installed on a grounded metal plate) to discharge high-frequency interference currents. If installed on non-metallic surfaces, it should be separately connected to the grounding busbar through a braided ground wire.

5.3 Power supply current limitation and voltage drop

M8 power connector: Maximum total current of 4A, exceeding it can cause the connector to overheat.

7/8 "power connector (EP2339-0042): maximum total current of 16A.

When providing long-distance power, cable voltage drop needs to be considered. For example, using an M8 cable with a length of 2m and a 0.34mm ² core, the voltage drop at a full load of 4A 24V is about 0.5V. It is important to ensure that the voltage reaching the module is not less than 24V -15%=20.4V.

5.4 Inductive load protection

When driving inductive loads such as relays and solenoid valves, a high-voltage back electromotive force will be generated at the moment of shutdown. Although the module integrates a freewheeling diode internally, the switching time is relatively long (which can cause the valve to turn off delayed). It is recommended to directly parallel a freewheeling diode (1N4007 or similar) or RC absorption circuit at both ends of the load to accelerate current decay and protect the output transistor.