| BasicTop® Digital 10 - 30 VDC PNP/NPN |
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BasicTop®
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Application
BasicTop is intended for remote signalling of the open and
closed position of an air-operated valve. Direct activation with the
built-in solenoid valve which is connected to a common air supply line and
operated by individual electrical signals to the valves. The BasicTop can
be fitted on ARC, SRC, LKLA-T for LKB and other butterfly and ball valves.
Working principle
BasicTop is fitted on the top of the valve actuator and is
connected with one cable and one tube for air supply. When the solenoid
valve is activated, the compressed air will activate the actuator. The red
activator stem (extension) in the centre of the Top Unit will activate a
sensor and transmit the actual position back to the control center.
Inductive proximity sensors 10-30 VDC PNP or NPN are
available.
The sensors/solenoids are standardized and therefore the
electrical data are identical.
All sensors are EMC approved according to:
- - EN 50081-1, Generic emission standard, commercial and light
industry
- - EN 50082-2, Generic immunity standard, industrial environment
- - pr EN 60947-5-2, Product family standard: Proximity sensors
All test requirements are met.
The pull-up or pull-down resistance in the input stage of the PLC must
ensure a proper reading of the signal from the sensors.
Standard design
BasicTop is delivered in a carton including assembly
instructions. The BasicTop consists of the following main components:
- - The base to fasten on top of the actuator including sensor
arrangement with solenoids.
- - A cover
- - The activator stem (extension)
- - The cable gland
- - A plastic bag with air fittings (air fitting for valve and top
unit has to be ordered separately from Ordering Leaflet)
- - Air tube
Materials
| All black plastic parts: |
Polyamide PA 6, reinforced. |
| Red plastic parts: |
Polyacetal POM. |
| Steel parts: |
Stainless steel 1.4301 (304) and 1.4404 (316). |
| Seals: |
Nitrile (NBR), FPM. |
| Sensors: |
Moulded in thermo-setting plastic. |
Inductive proximity sensors
The type of sensor is a non-contact electronic sensor. It
consists of an oscillator creating high frequency electromagnetic fields
which radiate from the sensing face of the sensor.
Every approaching conductive metal (damping target) causes a reduction of
the electromagnetic field.
The result is a current change of the output of the sensor.
Technical Data
* Air input and output
| Max. pressure: |
1000 kPa (10 bar) |
| Max. particles of dirt: |
0.01 mm |
| Max. oil content: |
1.0 ppm |
| Dewpoint of compressed air: |
≥ 10°C below ambient temperature |
| Max. water content: |
0.0075 kg/kg air |
| Air connection: |
R 1/8" (BSP) OD 6 mm tube |
* Environment
Temperature
| Working: |
IEC 68-2-1/2 |
-5°C to +55°C |
| Storage: |
IEC 68-2-1/2 |
-40°C to +85°C |
| Temperature change: |
IEC 68-2-1/4 |
-25°C to +70°C |
| Vibrations: |
IEC 68-2-6 |
10-55 Hz, 0.7mm |
| (working) |
|
50-500 Hz, 10g. |
| |
|
3 x 30 minutes |
| Protection class: |
|
IP67 |
| Droptest: |
IEC 68-2-32 |
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Humidity
| Cyclic humidity: |
IEC 68-2-30 |
+25°C / +55°C |
| (Storage/working) |
|
12 cycles |
| Constant humidity: |
IEC 68-2-3 |
+40°C, 504 hg |
| (working) |
|
93% R.H. |
* Solenoid valves
| Type: |
Bürkert type 301-C-1.2-1.6-3/2 |
| Available voltage: |
24 V DC |
| Power consumption: |
DC: 4W |
| Protection: |
Not connected to earth |
| Optional function: |
Manually operated |
Inductive proximity sensors
| Signal output: |
Digital PNP or NPN |
| Supply voltage: |
10-30 VDC |
| Operational current: |
0-100 mA |
| Switching frequency: |
1000 Hz |
| No-load supply current: |
15 mA |
| Off-state current: |
0.5 mA |
| Voltage drop: |
3 V |
Reverse polarity protection
Signals
| |
NPN |
PNP |
| Activated sensor |
0 |
1 |
| Non-activated sensor |
1 |
0 |
Electrical connections
- - +10-30 VDC (common) sensors
- - Output signal
- - Output signal
- - - (0) VDC (common) sensors
- - - (0) VDC (common) solenoids
- - + 24 VDC solenoid 1
- - + 24 VDC solenoid 2
Cable gland max. PG7 (ø6,5 - 8) mm.
Dimensions
Fig. 2. Dimensions
Ordering
Please state the following when ordering:
- - Solenoid valve(s): quantity (1 or 2)
- - PNP or NPN signals
Note!
For further details, see also instruction manual 70843. |
