SICK MAIHAK MaihakMBA 200 Operating Instructions Manual
Title
MaihakMBA 200
Rotating Bin-Level Indicator
Installation
Operation
Maintenance
OPERATING INSTRUCTIONS
Analyzers and Process Instrumentation
Bin-level Indicator MaihakMBA 200
Document information
Document ID
Title: Operating Instructions MaihakMBA 200
Order No.: 8 011 417
Version: 1.2
Stand: 2006-02
Subject
Product name: MaihakMBA 200
Hardware: all versions
Manufacturer
SICK MAIHAK GmbH
Nimburger Str. 11 · 79276 Reute · Germany
Phone: +49 7641 469-0
Fax: +49 7641 469-11 49
E-Mail: info.sick-maihak@sick.de
© SICK MAIHAK GmbH. All rights reserved.
Explanation of warning symbols
Hazard (general)
Hazard by voltage
Contents
1Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Optional equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Protective roof / deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Assembly (if required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3.1 Operational conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3.2 Installation position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3.3 Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3.4 Temperatures of the distance tube . . . . . . . . . . . . . . . . . . . . 7
3.4 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.1 Important safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.2 Protection against explosion . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4.3 Type 210 (230 VAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4.4 Type 220 (24 VAC/DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4.5 Type 230 (42/115/230 VAC) . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.5 DIP switch settings for type 220/230 . . . . . . . . . . . . . . . . . . . 9
3.6 Closing the housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6.1 Closing the cable glands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6.2 Closing the cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hazard in explosion-hazardous locations
Hazard by high temperature or hot surface
Warning levels
CAUTION
Hazard or unsafe practice which could result in personal injury or
property damage.
WARNING
Risk or hazardous situation which could result in severe personal
injury or death.
Explanation of information symbols
Technical risk for this device or its function (general)
Technical risk for this device by voltage
or other electrical hazards
Supplementary information
Nice to know
4 First Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Function test at first start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1 Check the operative function . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.2 Check for triggering by the bulk material . . . . . . . . . . . . . 10
5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 Recommended maintenance work . . . . . . . . . . . . . . . . . . . . . 10
5.2 Preventive function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.3 Safety information on opening . . . . . . . . . . . . . . . . . . . . . . . . 10
5.4 Removing the unit head (repair note) . . . . . . . . . . . . . . . . . . . 10
6 Fault indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ATEX certificate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2
MaihakMBA 200 Operating Instructions 8 011 417/2006-02 (V1.2) ©SICKMAIHAKGmbH
Bin-level Indicator MaihakMBA 200
1
Product overview
80 °C
ATE X
Zone 20/21
(Option)
200 °C
80 °C
200 °C
350 °C
500 °C
800 °C
MaihakMBA 200 Operating Instructions 8 011 417/2006-02 (V1.2) ©SICKMAIHAKGmbH
3
2
Product description
2.1 Unit components
1. Unit head: contains the motor
drive and electronic components.
Three different types available.
1
2. Process connection: thread or
flange. Attached to the outer wall of
the bulk materials container. Holds
2
the unit head on the outside and
the protective tube (if provided) on
the inside. Many versions available
for individual adaptation to the
3
actual container.
4
3. Shaft: Connects the paddle to the unit head. Various
lengths available (large sizes divided in two sections)
and a flexible steel cable as the shaft.
4. Paddle: Stops the shaft rotation when the bulk material
surrounds the paddle. Solid/flexible/foldable versions
available with different size or material.
5. Protective tube (option): Covers the shaft inside the
container. Various lengths available. Versions: open tube
for vertical mounting (great lengths delivered in two
sections); tube for horizontal mounting with additional
shaft bearing at the end; angled shaft bearing with
horizontal tube and a vertical shaft.
Principle of operation
2.2
The electric motor in the head makes the shaft and the
paddle rotate slowly. When the bulk material surrounds the
paddle, the rotation is blocked. The counter-torque is used
to turn the motor mechanism against a switch which then
turns the motor off. The switch has a second contact
(potential-free) which is used for the status indication.
As soon as the bulk material releases the paddle again, a
spring pulls the motor mechanism back into the working
position. Thus the switch is released and the paddle starts
rotating again.
Optional equipment
2.3
General options
● Special seal (DTR): Protection against gases, vapours,
and abrasive bulk materials.
● Compensating membrane: Membrane which allows
diffusion of water-vapour and thus can balance out the
humidity inside the unit head. Moreover, the membrane
will burst if the pressure inside the unit head increases
strongly due to operational trouble, which allows the use
on containers with an internal pressure up to +1MPa
(option »10 bar«).
● Heating in the unit head: Allows ambient temperatures
down to –30 °C.
● Height adjustment: A clamping sleeve which guides the
protective tube of the extension arm and allows fixating
the extension arm at variable insertion depth.
Electronic options (only for type 220 and 230)
● Action monitoring: A Hall sensor in the unit head
monitors the shaft rotation. The error status is indicated
by means of a relay contact.
● Indicating LED light: Indicates the current status.
Bin-level Indicator MaihakMBA 200
2.4
Appropriate use
Range of application
MaihakMBA bin level indicators are rugged
electromechanical sensors, designed to detect the
presence of bulk material at the place of installation and
thus to control the filling of bulk material containers.
Possible applications depend on the configuration of the
individual unit.
Design options
Variable design features are, for example:
● Paddle design, size, and material
5
● Shaft design and material
● Sealing of shaft against enclosure
The corresponding properties for the unit can expand or
restrict the range of possible applications (e.g. suitability for
a particular type of bulk material). Please note carefully the
specifications for your particular unit.
Specifications on the nameplate
● Unit type (for example, »210«) and version code
● Required mains power supply (for example, »230VAC
50/60 Hz«)
● Explosion protection class (for example, »II 1D …«),
including the enclosure protection class (for example,
»IP 65«) and maximum surface temperatures:
– The first temperature value applies to the unit head.
– The second temperature value applies to the
components protruding into the container.
● Allowable ambient temperature (T
example, »Z20«):
) and »Ex« zone (for
a
»extern« = for the unit head
»intern« = for components protruding into the container
Exemplary nameplate:
MaihakMBA 210 YAA1N1A00300AX
PN 214000-G 123456
SN 654321 05.03
230VAC 50/60Hz 10VA T
QA
Maihak AG D-22399 Hamburg Made in Germany
WARNING: Explosion hazard
An MaihakMBA bin level indicator may only be used in
explosion-hazardous locations if the individual
specifications of the unit allow this.
b
Check nameplate and accompanying papers.
b
Check whether the specifications of the ATEX
certification must be complied with (→ page 12).
CAUTION: Risks from inappropriate use
b
MaihakMBA bin level indicators are only to be installed
and put into operation by technicians who are suitably
qualified to carry out such work and are aware of the
possible dangers.
b
In addition to this manual, make sure that all local
regulations, technical rulings and internal-company
instructions that are valid at the place of use are
complied with.
b
Use the MaihakMBA bin level indicator only as it is
described and specified in this manual. Otherwise the
manufacturer’s warranty is no longer valid, and the unit
could be hazardous in use.
II 1D IP65 T98°C/T98°C
TÜV 03 ATEX 2275 X
T
Z20/extern: –15°C... +60°C
a
Z20/intern: –30°C... +80°C
a
0032
4
MaihakMBA 200 Operating Instructions 8 011 417/2006-02 (V1.2) ©SICKMAIHAKGmbH
Bin-level Indicator MaihakMBA 200
3
Installation
b
Do not remove, add, or change any of the components
in the instrument unless these changes are described
and specified in a manufacturer’s official information.
Otherwise the manufacturer’s guarantee becomes invalid,
and the certification for use in explosion-hazardous
locations (if provided) is no longer valid.
3.1 Protective roof / deflector
b
If at all possible, place the MaihakMBA unit in a position
where falling bulk material will not directly strike onto the
shaft or the paddle.
For heavy bulk materials that could damage the shaft or
the paddle:
b
If required, install a stable deflector or protective roof in
the container which protects the shaft and the paddle
against direct impact of falling bulk material.
3.2 Assembly (if required)
If shaft, paddle, and protective tube (if provided) were
shipped dismantled (for safe and easy transport):
b
Install the shaft: Guide the top end of the shaft into the
shaft sleeve of the unit head. Use a split-pin to connect
both parts (push it through and spread it out). – With
two-part shafts: Join both parts of the shaft in the same
way.
b
Assembling the protective tube (for divided protective
tubes): Take the locking screws out of the connecting
coupling sleeve. Screw one of the protective tube parts
into the coupling sleeve – up to about the middle of the
coupling sleeve. Then screw-in the other part from the
other side and firmly attach both parts of the protective
tube. – Recommendation: Now make two small
countersunk holes in the coupling sleeve, which will fix
the position of the locking screws (use a max. 3.2 mm
diameter drill guided through the screw holes of the
coupling sleeve). – Put in the locking screws and tighten.
b
Install the protective tube (for units with a protective
tube): Apply a threadlocking adhesive (such as »Loctite«)
to the thread of the protective tube and screw the
protective tube into the threaded sleeve, as far as it
goes.
b
Shortening the flexible cable shaft (if required): Remove
the tensioning weight from the end of the cable (undo
the locking screw and pull out the cable). At the place
where the cable must be cut, wrap some adhesive tape
firmly around the cable, to protect against wire particles
shooting from the cable. Wear protective goggles/
glasses. Then cut the cable with a suitable wire cutter or
a cutting disk. Remove the adhesive tape and attach the
tensioning weight again.
b
Install the paddle: Guide the flat end of the paddle into
the slot of the shaft and attach it with the split-pin
provided (push it through and spread it out).
If the bulk material is heavy or can form large clumps:
b
Install a stable protective roof within the container to
shield the shaft (and the extension arm) from the weight
of the bulk material.
b
Provide sufficient space between protective roof and
paddle to make sure that the bulk material can reach the
paddle.
1.
2.
● It may be necessary (or advantageous) to install the
paddle at the very end of the installation procedure.
● Recommendation: Apply a threadlocking adhesive
(such as »Loctite«) to all the locking screws.
1.
2.
3.
1 … 7 = order of assembly
5.
4.
7.
6.
1
3.
2.
MaihakMBA 200 Operating Instructions 8 011 417/2006-02 (V1.2) ©SICKMAIHAKGmbH
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