Datasheet

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com
Ultrasonic sensor UC2000-L2-I-V15
4
Release date: 2012-07-16 12:17 Date of issue: 2012-07-16 188199_eng.xml
Press and hold the programming key for 5 seconds to switch to the process for programming the sensor operating modes.
Programming the curve of the analog characteristic
1. The green LED is now flashing. The number of flashes indicates the output function currently programmed:
1x: rising ramp
2x: falling ramp
3x: zero-point line
2. Briefly press the programming key to switch between the different curves and press again to select the required curve.
3. Press and hold the programming key for 2 seconds to save the selection and switch to the process for programming the sound cone.
Programming the shape of the sound cone
1. The red LED is now flashing. The number of flashes indicates the sound cone shape currently programmed:
1x: narrow
2x: medium
3x: wide
2. Briefly press the programming key to navigate through the different sound cone shapes in succession and press again to select the required
sound cone shape.
3. Press and hold the programming key for 2 seconds to save the selection and return to normal mode.
Reset Sensor to Factory Settings
The sensor has a feature to reset to factory settings
1. Disconnect the sensor from power supply
2. Press and hold the Programming Button
3. Connect Sensor to power supply (yellow and red LED flash simultaneously for 5 s then yellow and green LED flash simultaneously)
4. Release Programming Button
The sensor now operates with default factory settings.
Factory settings
See technical data.
Indicators
The sensor features three LEDs for indicating statuses.
#
Synchronization
This sensor features a synchronization input for suppressing ultrasonic mutual interference ("cross talk"). If this input is not connected, the sensor will operate freewheeling
using internally generated clock pulses. It can be synchronized by applying an external square wave or by means of appropriate programming via the serial interface. 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 output(s) will remain in
the last valid output state. When using the external synchronization feature, please refer to the software description.
Note:
If the option for synchronization is not used, the synchronization input has to be connected to ground (0V) or the sensor has to 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. Several sensors (max. number see technical data) can be synchronized together by interconnecting their respective synchronization inputs. Due to programming via the
sensors interface one sensor acts as a master device, all the others as slave devices. (see description of the interface) In this master / slave mode the sensors are triggered
in parallel and are synchronized by a common synchronization pulse, provided by the master device.
3. Multiple sensors can be controlled by the same external synchronization signal. In this mode the sensors are triggered in parallel and are synchronized by a common
external synchronization pulse. All sensors must be parameterized for external synchronization by means of the sensor interface. See software description.
4. A separate synchronization pulse can be sent to each individual sensor. In this mode the sensors operate in external multiplex mode. (See note below). All sensors must
be parameterized for external synchronization by means of the sensor interface. See software description.
5. A high level (+U
B
) or a low level (-U
B
)on the synchronization input switches the sensor to standby mode if it is parameterized for external synchronization.
Note:
Sensor response times will increase proportionally to the number of sensors that are in the synchronization string. This is a result of the multiplexing of the ultrasonic transmit
and receive signal and the resulting increase in the measurement cycle time.
Note:
The sensors syncronization input delivers an output current in case of low level and burdens with its input impedance in case of high level. Please pay attention that the syn-
chronizing device needs to have that driver capability:
driver current against +U
B
≥ n * high-level/input impedance (n = number of sensors to be synchronized)
Green LED Yellow LED Red LED
In normal mode
Fault-free function
Fault (e.g. compressed air)
On
Off
Object in the analog
characteristic range
retains previous sta-
tus
Off
On
When programming the limit values
Object detected
No object detected
Confirmation of successful programming
Warning in the event of invalid programming
Off
Off
Flashing 3x
Off
Flashing
Off
Off
Off
Off
Flashing
Off
Flashing 3x
When programming the operating mode
Programming the output function
Programming the sound cone
Flashing
Off
Off
Off
Off
Flashing