Beckhoff EL2535-0050 | EtherCAT Terminal, 2-channel PWM output

Optimized control of proportional valves with PWM

The EL2535-xxxx output terminals are specially designed for the precise

control of single and double-coil proportional valves and proportional

solenoid valves. They regulate the output current through pulse width

modulation (PWM) of the supply voltage and are electrically isolated

from the E-bus. The current values (0 to maximum output current)

are specified by the automation device through a 16-bit value. 

The output stages are protected against overload and short circuit.

Each EtherCAT pulse width current terminal contains two channels

whose signal state is indicated by LEDs. The light emitting diodes

simplify local diagnosis by displaying typical load and wiring faults.

The EL2502-0010 output terminal modulates the pulse width of a binary

signal, and outputs it electrically isolated from the E-bus.

The mark/space ratio is preset by a 16-bit value from the automation device.

The output stage is protected against overload and

short-circuit. The EtherCAT Terminal contains two channels whose signal

state is indicated by LEDs. The LEDs are driven in time with

the outputs, and show the duty factor by their brightness.

The EL2502-0010 supports EtherCAT distributed clock timestamps in

order to influence switching on, off and over of a PWM signal with

microsecond precision

The EL2212 digital output terminal connects the binary control signals

from the automation device on to the actuators at the process level

with electrical isolation. The multi-timestamp features allow each

EtherCAT cycle to capture as many events per channel as were

preloaded in the internal buffer.

The EL2212 supports the particularly fast switching of inductive loads,

such as valves or relays. 24 to 72 V DC supplies are connected to the

power contacts and passed through to the load when switched on.

After an adjustable waiting period the terminal begins to control

channel-wise the current in order to protect the load.

The switching process can be positioned exactly using the timestamp.

The switch-off process is also accelerated considerably by the pole 

reversal of the voltage. The two channels are independently controllable.

The EL2202/EL2202-0100 digital output terminal connects the

binary control signals from the automation device on to the

actuators at the process level with electrical isolation.

This terminal benefits from very small output delay and is therefore

suitable for signals requiring particularly fast output.

The EtherCAT Terminal has a push-pull output that can be actively

switched to 24 V, 0 V or high-impedance.

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