Mollet DF Series User manual

M LLET
Füllstandtechnik
M LLET
Füllstandtechnik
12/19 DF30-BA
©
by MOLLET
01
DF30
Competence in rotation
MOLLET D-74706 Osterburken Tel. [phone] Fax [phone] Operating instruction
Page
Index
1. Description 03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Electrical connection 04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Switching logics and function displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04
Operating instructions
Safty instructions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 02
5. Setting of the sensitivity 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Maintenance and servicing 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05
9. Disposal 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Installation 03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Utilization 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06
EU-Declaration of Conformity
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07
Operating instructions
Level limit switch for bulk goods
Rotary blade level indicator
Thank you for having decided for our product.
You have decided for a first class branded product, a rotary blade level
indicator from the company MOLLET.
C o n g r a t u l a t i o n , w e f e l i c i t a t e t o y o u r g o o d c h o i s e .
Functionality, versatileness, long service life and design
It satisfies highest international standards:
DF

M LLET
Füllstandtechnik
02 DF30-BA 12/19
©
by MOLLET
DF30
Operating instruction MOLLET D-74706 Osterburken Tel. [phone] Fax [phone]
Rotary blade level indicator
Level limit switch for bulk goods
1.8 Switch off the power supply, before opening the device (touchdangerous voltage).
1.7 The device may put into operation with built-in cap-sealing and when it is closed, only (touchdangerous voltage).
1.6 Protect the signal contacts from voltage peaks when inductive loads are connected.
1.1 The installation, initial operation and maintenance may be done by a qualified expert with electrical know-how only.
permissible only with the attached pins.
Safety instructions
1.2 The connection of the single components as like as measuring blade, anti-buckling protection, shaft extension are
1.3 For the electrical connection take notice of the local and statutory rules and regulations and/or the VDE 0100.
1.4 Before electrical connection, compare the supply voltage with the details at the data plate.
1.5 A fuse (with max. 4 A) has to be connected in series to the voltage supply.
2.3 The cable gland and the plug screw were screwed on at the factory. Please check if the cable gland or the plug screw
Cable entry
ATTENTION
entry during transportation and storage. When the indicator is brought into the dusty area it has to be installed
immediately at its designated place, the PE sealing disc has to be removed, a cable has to be pulled into the cable gland
and the pressure screw has to be screwed on to maintain the type of protection.
2.1 The level indicator will be delivered with a cable gland M20x1.5.
2.2 The second drill-hole is closed with a plug screw M20 1.5. Optional a further cable gland can be delivered.x
have loosened during the mounting or the transportation. If so, tighten it again.
2.4 The cable gland will be delivered with a PE sealing disc. With it, the level indicator is protected against dust and dirt
Excessive screw on may injure the type of protection.
Read and follow these safety instructions first and take notice of the operating instructions.
special conditions and instructions for safe application
first an take notice of the operating instructions.
By use in explosive hazardous areas read and follow the
off the attached
explosive protection information

process connection
measuring
blade
control head
(housing with motor and switch)
cable gland
001-0136
001-0746
M LLET
Füllstandtechnik
DF30
12/19 DF30-BA
©
by MOLLET
03
MOLLET D-74706 Osterburken Tel. [phone] Fax [phone] Operating instruction
Rotary blade level indicator
Level limit switch for bulk goods
- Inspect if the delivery is complete.
The delivery volume is different, depending on the
options.
- Read and follow the safety instructions and the
operating instructions before mounting the device!
Put the level indicator together with the sealring at
the provided position in the silo or container wall
and screw it tightly by means of appropriate tool s.
2. Installation
2.1 Preparation
Thread connection
2.2 Mounting
2.3 Mounting of the measuring blades
Attention!
During beating
the pin into the
shaft, you have to
support the shaft
with an adequate
counterpart.
2.4 Orientation of the housing
After mounting, the housing has to be orientated by
turning in such a away, that the cable gland is directed
towards the cable duct.
Cable gland in direction
to the cable duct
Attention!
Ensure that the cable is
fixed tightly in the cable
gland.
If the bulk material is reaching the measuring blade,
the rotation will be hindered and it will be stopped.
The rotating measuring blade, projecting into the silo
or container, is driven by a gearmotor.
The return torque turns the pivoted motor from its end
position and actuates the signal switch. A second
switch turns the motor off.
If the filling level of the bulk material sinks, the blade
becomes freely again and a spring will turn back the
motor into its original end position.
Thereby the motor will be turned on again and the
signal switch will be switched back.
Operating instructions
1. Description
1.1 Intended use
The electromechanical level limit switch is monitoring
the filling level of bulk goods in silos, bunkers,
containers, hoppers, weighers, etc..
1.2 Construction
1.3 Function
74706 Osterburken
rotary blade level
indicator
Name
Type DF
Response delay approx. 1.20 sec.
see data plateBulk goods temperature
see data platePressure range
1.5 Materials
aluminium
or stainless steel 1.4301
Process connection
stainless steel 1.4301 Measuring blade
Ambient temperature -20 °C ... +70 °C
Manufacturer MOLLET
Maintenance none
1.4 Technical data
Füllstandtechnik GmbH
1 U/min Measuring blade speed
stainless steel 1.4301 Blade shaft
NBR, blackSealing ring R0
R1
R2
R5
(order code)
Viton/Teflon/VA
NBR, white, FDA conform
Teflon
Housing aluminium
or stainless steel 1.4401
Industriepark RIO 103Address

1~
11 2 346
PE
AC
DC
1~
NL PE
11 2 346
346
346
3.4 Circuit diagram DC
3.3 Circuit diagram AC
3.2 Electrical connection
- Run the cable between housing and cable
protection, in order that the switches and the motor
will not be hampered at their necessary movement.
Caution!
- After the electrical connection the cap nut of the
cable gland has to be screwed and please ensure
that the cable is fixed strongly and tightly in the
cable screwing .
- Install the wiring and electrical connection in
compliance with the circuit diagrams.
During the whole working life, the switch may be used
in the same kind of circuit types, only.
When the switch has been used once with medium
switching capacity, it cannot be used any more for the
low switching capacity.
The signal contact is a multivoltage and multicurrent
switch. It is suitable for use in circuits with low currents
and low voltages as well as for medium currents with
control voltages up to 250 V ~AC.
3.1 Electrical data
3. Electrical connection
4 WDC
Supply voltage see data plate
Type of protection IP 66 acc. to DIN 60529
Connection clamps max. 1.5 mm²
Signal contact change-over contact
potentialfree
4 V DC ... 250 V ACSwitching voltage
Power consumption AC 4 VA
Cable entry cable gland M20 x 1.5
1mA ... 2ACapacity of the contact
M LLET
Füllstandtechnik
DF30
04 DF30-BA 12/19
©
by MOLLET
Switching logics
in case of mains voltage failure.
Attention!
Wiring of the level indicator
in a way that no undesirable
switching function can occur
Arrangement and colours of
the LEDs for function display
green
yellow green
4. Switching logics and function displays
= full = LED "ON"
Symbol signification
= under voltage = LED "OFF"
= empty
Level limit switch for bulk goods
Rotary blade level indicator
Operating instruction MOLLET D-74706 Osterburken Tel. [phone] Fax [phone]
001-0AP00
001-0AP02
001-0AP22
001-0AP20
001-0747

+
-

light
Works setting medium
strong
Spring arm
As occasion demands, the sensitivity of the level
indicator can be adjusted, referring to the characteristics
of the bulk goods, by shifting the spring arm.
5. Setting of the sensitivity
-

+
7. Maintenance and servicing
- Damaged parts, contacts or connections have to be
repaired immediately or being replaced with parts of
the same kind.
- Please ensure that the shaft of level indicators with
jib extension will not be buckled or bended.
- Violation against applicable law and standards.
7.1 Maintenance
6.3 Inexpert handling
- In case of intended use, the rotary blade level
indicator needs no maintenance.
- Remove, adding or change of assembling parts,
unless this has been described in the documents of
the manufacturer.
- Remove deposits and stickings from the blades or
wrinkles with a brush or with a scraper.
Don´t use any force and don´t damage the sealring
of the shaft.
8. Storage
- While storage, the level indicator has to be
protected from dust and humidity.
- The level indicator can be recycled.
7.2 Servicing
- Mounting of spare parts which are no original parts.
- The disposal applies to the valid environmental
guidelines according to the location of the carrier
and the local manufacturing conditions.
- Ignoring of the safety instructions and the operating
instructions.
- Inspect the assemblings inside of the container
about signs of wear and tear, in regular intervals.
Define the intervals of the control, depending on the
bulk goods characteristics.
- U the rotary blade level indicator in not
intended use.
tilization of
- Until the complete restoration of the proper function,
the rotary blade level indicator must not be used
any more.
9. Disposal
- Commissioning of the rotary blade level indicator
only, if the installation will be done correctly and if it
will be fixed tightly with the electrical contact.
6.2 Normal operation
6. Utilization
6.1 Putting into operation
- Operate the level indicator within the intended
temperature ranges for the ambient and bulk goods
temperature.
- Protect the inside of the control head from soiling.
- When the indicator has to be damaged, you have to
take the device out of operation immediately.
- During operation, the housing and the cable entry
must be closed tightly.
- Use the rotary blade level indicator in its intended
only. application
M LLET
Füllstandtechnik
DF30
12/19 DF30-BA
©
by MOLLET
05
MOLLET D-74706 Osterburken Tel. [phone] Fax [phone] Operating instruction
Three settings are possible:
1. light
for very light bulk goods
2. medium
suitable for almost all bulk goods
Fluidised bulk goods are lighter during filling and
draining process. This has to be taken appropriately
into consideration when setting the spring force and
selecting the size of the measuring blade.
3. strong
for sticking bulk goods
Rotary blade level indicator
Level limit switch for bulk goods
001-0229

process connection G1"
Ø14
2,2
process connection G1½"
without measuring blade
86x76
Ø9
3
31
process connection G1½
measuring blade T6V
250
92x88
M20x1.5
with measuring blade adapter M7 without housing (on mounting plate)
F1
M LLET
Füllstandtechnik
DF30
06 DF30-BA 12/19
©
by MOLLET
Dimensions
Mounting position vertical
Loadability of the blades F1 max. 50 Nm
Application instructions
Rotary blade level indicator
Level limit switch for bulk goods
Operating instruction MOLLET D-74706 Osterburken Tel. [phone] Fax [phone]
001-0136
001-0137
001-0135
001-0136

erklären in alleiniger Verantwortung, dass das Produkt:
declares under our sole responsibility, that the product:
Drehflügel-Füllstand-Grenzschalter / Rotary blade limit switch
Drehflügel-Füllstandanzeiger / Rotary blade level indicator
EU-Declaration of Conformity
Wir/We MOLLET Füllstandtechnik GmbH
EU-Konformitätserklärung
Industriepark RIO 103
D-74706 Osterburken
Tel. [phone] Fax [phone]
Je nach Ausführungsvariante angewandte harmonisierte Normen oder normative Dokumente:
DIN EN 1127-1:2019 DIN EN ISO 80079-36:2016 DIN EN ISO 80079-37:2016
DIN EN IEC 60079-0:2019 DIN E DIN EN 60079-1:2015 N 60079-7:2016
Typ/Type DF ...
DIN EN 61010-1:2011 DIN EN 60529:2014
DIN EN 60079-31:2014
Niederspannungsrichtlinie Low voltage directive 2014/35/EU
EU-Type Examination Certificate: IBExU04ATEX1001X
EG-Baumusterprüfbescheinigungsnummer:
Applied harmonized standards or normative documents
DIN EN 61326-1:2013 DIN EN 55032:2016 DIN EN 55024:2016
den folgenden Europäischen Richtlinien entspricht:
conforms with the following European directives:
Und die Geräte mit - Kennzeichnung entsprechen zusätzlich der folgenden Europäischen Richtlinie:

IBExU04ATEX1010X
IBExU04ATEX1033X
EMV-Richtlinie EMC directive 2014/30/EU
DIN EN IEC 61000-6-2:2019
And the devices with - marking conform additional with the following European directive:

ATEX-Richtlinie ATEX directive 2014/34/EU
Angewandte harmonisierte Normen oder normative Dokumente:
Depending on the design applied harmonized standards or normative documents:
Wolfgang Hageleit
IBExU04ATEX1034
Quality assurance: TÜV NORD CERT GmbH, 30159 Hannover (0044)
Osterburken, den 11.01.2020
Qualitätssicherung:
Ausgestellt von:.
Geschäftsführer / managing director
Issued by: IBExU Institut für Sicherheitstechnik GmbH, 09599 Freiberg (0637)
E KE-DFU
M LLET
Füllstandtechnik
Diese Erklärung darf nur unverändert weiterverbreitet werden.
This declaration is only allowed to hand out in unchanged form.
91_EUKE-DF_3_01-20
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