• No TEACH-IN required
• Function indicators visible from all directions
• Insensitive to printing, colors, and shining surfaces
• Material weight from 10 g/m 2 up to over 2000 g/m 2
• Very wide material spectrum, finest papers up to thin sheet metals as well as plastic- and metal foils
• Perpendicular or inclined sensor mounting relative to the sheet plane possible
• Programmable
Technical parameters          Â
| General specifications | |
| Sensing range | 20 ... 60 mm , optimal distance: 45 mm |
| Transducer frequency | 395 kHz |
| Indicators/operating means | |
| LED green | indication: single sheet detected |
| LED yellow | Indication: No sheet detected (Air) |
| LED red | indication: double sheet detected |
| Electrical specifications | |
| Operating voltage U b | 18 ... 30 V DC , ripple 10 % SS |
| No-load supply current I 0 | < 80 mA |
| Time delay before availability t v | < 500 ms |
| Input | |
| Input type |
Function input 0-level: -U B ... -U B + 1V 1-level: +U B - 1 V ... +U B |
| Pulse length | ≥ 100 ms |
| Impedance | ≥ 4 kΩ |
| Output | |
| Output type | 3 switch outputs NPN, NC |
| Rated operating current I e | 3 × 100 mA , short-circuit/overload protected |
| Voltage drop U d | ≤ 2 V |
| Switch-on delay T on | approx. 15 ms (shorter response time on request) |
| Switch-off delay T off | approx. 15 ms (shorter response time on request) |
| Pulse extension | min. 120 ms programmable |
| Ambient conditions | |
| Ambient temperature | 0 ... 60 °C (32 ... 140 °F) |
| Storage temperature | -40 ... 70 °C (-40 ... 158 °F) |
| Mechanical specifications | |
| Connection type | cable PVC , 2 m |
| Core cross-section | 0.14 mm |
| Protection degree | IP67 |
| Material | |
| Housing | nickel plated brass; plastic components: PBT |
| Transducer | epoxy resin/hollow glass sphere mixture; polyurethane foam |
| Mass | 150 g |
| General information | |
| Supplementary information |
Switch settings of the external programming adapter: "output load": pull-up "output logic": inv |
Diagrams          Â
Dimension      Â
Additional information      Â
Connection       Â
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 Description of sensor functions
The ultrasonic double sheet monitor is used for double sheet detection in all situations in which the automatic distinction between double and single sheets is required in order to protect machines or avoid waste production. The double-sheet monitor is based on the ultrasonic through-beam principle. The following can be detected:
- No sheet, i.e. air,
- Individual sheet
- Double sheet
A microprocessor system evaluates the signals. The appropriate switch outputs are set as a result of the evaluation. Changes in ambient conditions such as temperature and humidity are compensated for automatically. The interface electronics is integrated into a compact M18 metal housing together with a sensor head.
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Switching on
The sensor is equipped with 6 connections. The functionality of the connections is described in the following table. The function input
(PK) is used to assign parameters to the sensor. (See Output pulse extension, Alignment aid and Program selection). During normal
operation, the function input must always be securely connected with +U B or -U B , to avoid possible interference or improper functionality.
| Colour | Switching on | Comments |
| BN | +U B | Â |
| WH | Switch output for single sheets | Pulse width corresponds to the event |
| BK | Switch output for double sheets | Pulse width corresponds to the event |
| GY | Switch output for air | Pulse width corresponds to the event |
| PK | -U B /+U B |
Function input for parameter assignment/ pulse prolongation |
| BU | -UB | Â |
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Normal mode
The sensor is working in normal mode if the function input (PK) is applied to -U B or +U B when the power source (Power-On) is supplied,
as shown in the output pulse extension table (see below).
Displays:
LED yellow:Â Â Â Â Â Detection of air
LED green: Â Â Â Detection of single sheets
LED red: Â Â Â Â Â Detection of double sheets
Switch outputs:
The switch outputs are only active in normal operation!
White:Â Â Â Â Â WHÂ Â Â Â Single sheet output
Black:Â Â Â Â Â BK Â Â Â Double sheet output
Gray:Â Â Â Â Â Â GYÂ Â Â Â Â Â Air output
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Procedure for assigning parameters
It is possible to switch to additional parameter assignment modes from the display mode:
        Alignment mode -->
        Program selection mode -->
        Alignment aid mode --> (for checking)
When the function input (PK) is applied to -U B (for > 500 ms), the mode changes. When the "Program selection" mode is active, swit-
ching on function input (PK) on to +U B (for > 500 ms) selects the next program level.
Disconnecting the power supply causes the system to exit the current mode with the selected program change.
The switch outputs are not active while parameters are being assigned to the sensor!
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