Ultrasonic sensor

UC2000-30GM-IUR2-V15

4

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Pepperl+Fuchs Group

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Synchronization

This sensor features a synchronization input for suppressing ultrasonic mutual interference ("cross talk"). If this input is not connected, the sensor

will operate using internally generated clock pulses. It can be synchronized by applying an external square wave. The pulse duration must be ≥

100 µs. Each falling edge of the synchronization pulse triggers transmission of a single ultrasonic pulse. If the synchronization signal remains low

for ≥ 1 second, the sensor will revert to normal operating mode. Normal operating mode can also be activated by opening the signal connection

to the synchronization input (see note below).

If the synchronization input goes to a high level for > 1 second, the sensor will switch to standby mode, indicated by the green LED. In this mode,

the outputs will remain in the last valid output state.

Note:

If the option for synchronization is not used, the synchronization input has to be connected to ground (0 V) or the sensor must be operated via a

V1 cordset (4-pin).

The synchronization function cannot be activated during programming mode and vice versa.

The following synchronization modes are possible:

1. Several sensors (max. number see technical data) can be synchronized together by interconnecting their respective synchronization inputs.

In this case, each sensor alternately transmits ultrasonic pulses in a self multiplexing mode. No two sensors will transmit pulses at the same

time (see note below).

2. Multiple sensors can be controlled by the same external synchronization signal. In this mode the sensors are triggered in parallel and are syn-

chronized by a common external synchronization pulse.

3. A separate synchronization pulse can be sent to each individual sensor. In this mode the sensors operate in external multiplex mode (see note

below).

4. A high level (+UB) on the synchronization input switches the sensor to standby mode.

Note:

Sensor response times will increase proportionally to the number of sensors that are in the synchronization string. This is a result of the multiplex-

ing of the ultrasonic transmit and receive signal and the resulting increase in the measurement cycle time.

Note on communication with the UC-30GM-R2 interface cable

The UC-30GM-R2 interface cable allows for communication with the ultrasonic sensor using

ULTRA3000 software. The cable creates a connection between a PC RS-232 interface and the

programming plug socket on the sensor. When connecting to the sensor, make certain the plug

is lined up correctly; otherwise no communication will be possible. The key of the cable’s plug

must be aligned to the groove of the socket on the sensor (not with the arrow symbol on the sen-

sor).

Programmable parameters with the ULTRA3000 software

• Evaluation limits A1 and A2

•Operation mode

• Sonic speed

• Temperature offset (The inherent temperature-rise of the sensor can be considered in the temperature compensation)

• Expansion of the unusable area (for suppression of unusable area echoes)

• Reduction of the detection range (for suppression of remote range echoes)

• Time of measuring cycle

• Acoustic power (interference of the burst duration)

• Sensitivity

• Behavior of the sensor in case of echo loss

• Behavior of the sensor in case of a fault

• Average formation via an allowed number of measuring cycles

• Selection of the parameter set, RS 232 or manually

Note:

When connected to a PC and running the ULTRA3000 software, the sensor can act as a long term data logger as well.

Green LED Red LED

Yellow LED A1

Yellow LED A2

During Normal Operation

- Temperature compensated

- with removed programming plug

Interference (e.g. compressed air)

On

Off

Off

Off

On

Flashing

Object in evaluation range

Object in evaluation range

remains in previous state

Object in sensing range

Object in sensing range

remains in previous state

During Sensor Programming

Evaluation limit A1:

Object detected

No object detected

Evaluation limit A2:

Object detected

No object detected

Operation mode:

Rising slope mode

Falling slope mode

Zero line mode

Flashing

Off

Flashing

Off

On

On

On

Off

Flashing

Off

Flashing

Off

Off

Off

Flashing

Flashing

Off

Off

Off

Flashing

Flashing

Off

Off

Flashing

Flashing

Flashing

Off

Flashing

Standby

Flashing

Off

remains in previous state

remains in previous state

A1

A2

E2

E3

LED

yellow

Dual-LED

green/red

LED

yellow

Evaluation limit 1

"Power on"/Disturbance

Evaluation limit 2

1

2

4

3

LED-window

V15-plug connector

(M12x1)

1: TXD

2: RXD

3: not used

4: GND

Temperature/program

connector

(PC connection via inter-

face cable UC-30GM-R2)

Groove