EL51xx series overview

Number of channels

2

1

2

2

1

Encoder type, incremental

Differential RS422

Yes

Yes

Yes

No

Yes

Single-ended TTL

Yes

Yes

Yes

Yes

Yes

OpenCollector

Yes

Yes

Yes

Yes

Yes

Counter / pulse generator

Yes

Yes

Yes

Yes

Yes

Number of digital inputs per channel

2

2

1

1

2

Number of digital outputs per channel

No

No

No

No

2

Encoder operating voltage 5 V_DC, 12 V_DC, 24 V_DC switchable

Yes

Yes

Yes

Yes

Yes

Encoder output current per channel

0.3 A

0.3 A

Sum
current 0.3 A

Sum
current 0.3 A

0.3 A

Cut-off frequency

20 million increments/s, corresponds to 5 MHz

20 million increments/s, corresponds to 5 MHz

20 million increments/s, corresponds to 5 MHz

4 million increments/s, corresponds to 1 MHz

20 million increments/s, corresponds to 5 MHz

Reset counter value via

Zero pulse C

Yes

Yes

No

No

Yes

Latch input

Yes

Yes

Yes

Yes

Yes

Set counter value via

PLC variable

Yes

Yes

Yes

Yes

Yes

Zero pulse C

Yes

Yes

No

No

Yes

Latch input

Yes

Yes

Yes

No

Yes

Gate/Latch input

No

No

Yes

Yes

No

Save counter value via

Zero pulse C

Yes

Yes

No

No

Yes

Latch input

Yes

Yes

Yes

No

Yes

Gate/Latch input

Yes

Yes

No

Yes

Yes

Lock counter value via

PLC variable

Yes

Yes

Yes

Yes

Yes

Gate/Latch input

Yes

Yes

Yes

Yes

Yes

Switching at comparison values
(Counter / Frequency / Period value)

No

No

No

No

Yes

Detect counting direction

Yes

Yes

No

No

Yes

Detect reversion of rotation

Yes

Yes

No

No

Yes

Frequency measurement

Yes

Yes

Yes

Yes

Yes

Period value measurement

Yes

Yes

Yes

Yes

Yes

Velocity, speed calculation

Yes

Yes

Yes

Yes

Yes

Duty cycle evaluation

Yes

Yes

No

No

Yes

Microincrements

Yes

Yes

No

No

Yes

Timestamp function

Yes

Yes

No

No

Yes

Adjustable interference pulse filters

Yes

Yes

Yes

Yes

Yes

Plausibility check

Yes

Yes

Yes

Yes

Yes