Visatron VN 115 / 93 User manual

VISATRON
Operating Instructions
Article No.: 10980
Edition: 04 W
VN 115 / 93
VN 116 / 93
VN 215 / 93
D - 66440 Blieskastel / Saar / Germany . Industriering 14 . Airport Saarbrücken
++ 49 (0) 6842 - 508 / - 0 Telephone / - 260 Fax . eMail: [email protected]
SCHALLER-AUTOMATION
INDUSTRIAL AUTOMATION TECHNOLOGY KG

06. 04

It is recommended to read this instruction manual before
commencing the repair, assembly or commissioning of the oil mist
detector system!
CAUTION: The manufacturer’s warranty will become void if these
instructions are not followed!
When oil mist shutdown on engine occurs, operator must follow
engine maker’s instruction!
Unless notified to the contrary, these operating instructions are
applicable for:
VN 115 / 93
VN 116 / 93
VN 215 / 93
In case of an oil mist alarm, the oil mist
detector (OMD) must be in condition to react
within the next few seconds and shut down
the engine, in order to minimise immediate or consequential
damages!
More Information can be found in SCHALLER AUTOMATION‘ S Oil
Mist Vademecum which SAB provides free of charge.
!
!Safety Signs
in general
Safety Signs
electrical
Safety Signs
parts are sensitive
to electrostatic
discharge
Operating Instruction VN 93
06. 04

1. Produktbeschreibung
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Installation
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Inbetriebnahme / Betrieb
Commissioning / Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Funktionsprüfung / Wartung
Performance Test / Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Störungen und Störungsbeseitigung
Malfunction and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Reparatur
Repairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7. Ersatzteile / Service - Box
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Service- Adressen
Service adresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9. Optionen
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10. Prospekte, Druckschriften, usw.
Brochures, Leaflets etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. Allgemeines
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12. Notizen
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inhalt,
Index
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xx
Betriebsanweisung Visatron VN 93 / Operating Instruction Visatron VN 93
06. 04

Product Description
Oil mist detectors protect large diesel engines of all applications from heavy
consequential damage as a result of overheating.
Application
With the VISATRON oil mist detectors of the type VN 115 / 93 and 116 / 93, a header
pipe sampling system is used for suction extraction of the crankcase atmosphere
from each crankcase compartment; whereas an individual compartment suction pipe
system is required for the type VN 215 / 93.
Application of the different VISATRON® devices and suction systems:
VN 115 / 93
- Basic design, suitable for the monitoring of trunk piston diesel engines with in-line
and V cylinder arrangements, running at medium and high speed.
- Damage detection through a header pipe sampling system without localisation of
the point of damage.
VN 116 / 93
- Design with a higher sensitivity, suitable for the monitoring of trunk piston diesel
engines with in-line and V cylinder arrangements, running at medium and high
speed.
- Damage detection through a header pipe sampling system with a display of the
crankcase compartment half (left or right side of the position of the detector) in
which overheating damage has arisen.
- The header pipe sampling system is the same as in the VN 115 / 93, so the
VN 116 / 93 can replace the VN 115 / 93 without modification of the suction system
if localisation of damage (i. e. left or right side of engine) is called for.
1. 01
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Operating Instruction Visatron VN 93
06. 04

1. 02
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VN 215 / 93
- Device with the highest sensitivity, suitable for the monitoring of large four stroke
and crosshead engines running at medium and slow speed.
- Damage selection through the individual compartment suction pipe system, with
display of the compartment with the overheating damage.
Options
Available for all devices as an option in the package (option must be ordered with the
particular OMD, not separately)
- Serial RS 485 interface
- Built-in history storage device for storing events with the data and time
Connection to a PC is possible with this option. The trend of the opacity (oil mist
concentration) can be graphically displayed through this PC with the DIEMOS
software that can also be provided as an option.
Furthermore, the interface makes it possible to drive the remote display. The history
storage device is for storing events in the detector, such as the appearance of an
alarm with the date and time. These data can subsequently be read out through the
serial interface.
06. 04

1. 03
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Operating Instruction Visatron VN 93
06. 04
Function description
All VISATRON® devices continuously draw the atmosphere from every compartment
in the crankcase area through the suction system. The suction vacuum required is
generated through a wear- free air jet pump in the device, fed with compressed air
(drive air), and is consequently independent of the power supply.
The sample flow, consisting of the sucked-in atmosphere of the crankcase
compartment, is guided through an optical channel for measuring turbidity. The
turbidity of the sample flow is measured by the absorption of infrared light.
% Opacity is used as the dimensional unit of the turbidity; 100% Opacity means total
absorption, and 0% Opacity means no absorption. Oil mist becomes explosive from
a concentration of approx. 50 mg of atomised oil in 1 litre of air and up, which
corresponds to an opacity of approx. 40%.
The sensitivity, i.e. the opacity that is required to trigger an alarm, can be set at 10
different levels in all devices.
A slow increase in the operating opacity or the contamination of the optics is
com-pensated in the microprocessor system up to a maximum safety alarm
threshold.
The contamination is strongly limited through scavenging air chambers that are
supplied with fresh air and are located in front of the optics.
The VN 93 series is distinguished from the VN 87 series through the following
features:
- Scavenging air chambers are not supplied with fresh air from the engine room, but
instead with forced air, so fumes from a fire in the machine room cannot lead to an
alarm.
- The measuring head heating unit for the avoidance of precipitating condensation
water in the device, which can be delivered as an option to the VN 87, is integrated
in the measuring head of the VN 93.
- An optional RS 485 interface with a history storage device permits the connection of
the VN 93 to the ship's computer or PC.
- A pre-alarm relay, programmable in the sensitivity, is activated before an engine
stop will be triggered by a high concentration of oil mist.
- The possibility of a calibration with fresh air exists for the types VN 116 / 93 and
VN 215 / 93. It permits the measurement of the absolute opacity.

Design
The air jet pump, the connector plug, the pipe connector box (VN 115 / 93) or the
valve box (VN 116 / 93 and VN 215 / 93) and the shock-absorbing mounting plate for
the actual measuring head are supported on a sturdy base plate.
The opacity measurement path and the electronics with microprocessor control are
located in the measuring head.
Three wear-free light sensitive buttons are provided for the operation and display:
2 pieces of 7-segment displays, each with 4 digits, 1 LED chain and 3 further LEDs
to display the operating state.
Measuring head
Pipe
connector
box
Connector
plug of
measuring
head
Inspection cover
Base plate
Display and light
sensitive buttons
VN 115 / 93
1. 04 Operating Instruction Visatron VN 93
06. 04
1. 04 / 1
Short form
operation
instruction
Air jet pump
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RS 485
Connector

VN 116 / 93
VN 215 / 93
1. 05
Operating Instruction Visatron VN 93
06. 04
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1. 05 / 1
1. 05 / 2
Air jet pump
Short form
operation
instruction
Display and
light sensitive
buttons
Display and
light sensitive
buttons
Short form
operation
instruction
Measuring head
Valve box
Connector plug
of measuring
head
Inspection cover
Base plate
Pipe
connecting
flange
Display
damaged
compartment
Connector
plug of
valve box
Base plate
Measuring head
Valve box
Connector plug
of measuring
head
Inspection cover
Pipe connector
flange
Display of
damaged
compartment
side
Connector
plug of
valve box
RS 485
Connector
RS 485
Connector

1. 06
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ödskhgölskfhlklgkhllghotot Operating Instruction Visatron VN 93
VISATRON® VN 115 / 93
The detection of damage takes place through a header pipe sampling system without
localisation of the point of damage.
The mixture of atmosphere from the crankcase passes from all individual
compartments via the header pipe through the detector´s pipe connector box into the
opacity measurement path in the housing of the measuring head.
The alarm threshold can be set at 10 levels, in a range from 0.5% to 25% Opacity.
VISATRON® VN 116 / 93
The detection of damage takes place through a header pipe sampling system with a
display of the crankcase compartment half in which the overheating damage has
arisen.
The mixture of atmosphere from the crankcase passes from all individual
compart-ments via the header pipe through the valve box into the opacity
measurement path, in the housing of the measuring head.
If the opacity of the mixture of atmosphere from the crankcase exceeds 10% of the
alarm threshold that has been set, a so-called damage check starts. The valves in
the valve box are switched over according to a certain algorithm during the damage
check, until the half of the crankcase compartments with the overheating damage
has been found.
The alarm threshold can be set at 10 levels, in a range from 0.7% to 28% Opacity.
The increased sensitivity, in comparison with the VN 115 / 93, results from the fact
that an alarm is triggered if the difference in opacity, between the two halves of the
crankcase compartment, exceeds 20% of the alarm threshold that has been set.
VISATRON® VN 215 / 93
Damage selection takes place through an individual compartment suction pipe
system (the OMD is directly connected to each compartment) with a display of the
compartment in which the overheating damage has arisen.
Damage selection takes place as in the VN 116 / 93. The wear and tear free reed
valves are switched over according to a certain algorithm during the damage check,
until the compartment with the damaged location has been found.
06. 04

VN 115 / 93
VN 116 / 93
VN 215 / 93
VN 115 / 93
VN 116 / 93
VN 215 / 93
VN 115 / 93
VN 116 / 93
VN 215 / 93
1. 07
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Operating Instruction Visatron VN 93
Technical Data
Suction System
The maximum number of sampling points for both systems
(header pipe and individual) =10. Suction pressure measured against atmospheric
pressure is 60 - 80 mm. The measurement is performed with a U-pipe manometer
on the measuring head. The U-pipe manometer is a component available on
request.
VN 115 / 93, VN 116 / 93
2 header pipes (22 x 2 mm) with branch pipes (10 x 2 mm) to the crankcase
compartments are to be installed for VN 115 / 93 and VN 116 / 93
VN 215 / 93
Individual pipes (14 x 2 mm) from each compartment to the OMD for VN 215 / 93
Sensitivity
VN 115 / 93
Alarm threshold 2% Opacity* (see brief description of the VN 115 / 93), adjustable in
10 levels from 0.5% to 25% Opacity. (1% Opacity corresponds to approx. 0.2 mg of
oil mist per litre of crankcase atmosphere; explosion limit 50 mg/l at ignition
temperature of approx. 500 C)
*Factory setting
VN 116 / 93, VN 215 / 93
Damage Check-start threshold 0.24% Opacity* (see brief description of the
VN 116 / 93), adjustable in 10 levels from 0.07% to 2.8% Opacity. Differential alarm
threshold 0.49% Opacity* (see brief description of the VN 116 / 93), adjustable in 10
levels from 0.14% to 5.6% Opacity. Safety alarm threshold 2.44% Opacity*
(see column 5, brief description of the VN 115 / 93), adjustable in 10 levels from
0.7% to 28% Opacity.
*Factory setting
Power Supply
Electric Power Supply
Voltage: 24 V DC + 30/- 25%, 24 V battery or power supply unit
Note: In case of battery operation, provide a direct power supply from the battery
terminals to the VISATRON®- device!
Current consumption: max. 3 A, starting current 4 A, fuse 4 A semi time lag.
Electromagnetic compatibility: interference radiation EN 55011, resistance to
interference EN 50082/2 (interference immunity industry).
Drive Air for the Suction System
Suction vacuum measured against the atmosphere of 60 - 80 mm is required.
The measurement is performed with a U- tube manometer on the measuring head.
The U- tube manometer is a component of the service box (see accessories).
Air pressure required at the inlet of the jet pump approx. 0.6 bar. Air consumption
max. 1.0 Nm3 / h (m3 at atmospheric pressure). The drive air can be taken from the
pneumatic engine control system or from the starting air system. A pressure
regulation unit (see device list) can be delivered as an option for pressure reduction;
max. primary air pressure 12 bar (additional 30 bar pressure regulator is also
available).
06. 04

1. 08
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Signal Outputs and Displays
MAIN ALARM
ADJUSTMENT RANGE FOR THE SENSITIVITY: can be set at 10 levels.
REMOTE SIGNALLING: relay with 2 potential-free switch-over contacts, excitation
with a main alarm. Contact load max. 60V AC, 2 A, 120 VA / max. 60V DC, 2 A, 60 W.
WIRE- BREAK PROTECTION: bridging the contacts with 33 K ohm resistance. On
request, resistance with other value is available. 1 contact as n.o., the other as n.c.
DISPLAY ON THE DEVICE: blinking- illuminated red ALARM LED.
PRE-ALARM
ADJUSTMENT RANGE FOR THE SENSITIVITY: 40% to 100% of the main alarm
threshold.
REMOTE SIGNALLING: relay with potential- free switch contact, opens for a
pre-alarm. Contact load max. 60V AC, 2 A, 120 VA / max. 60 V DC, 2 A, 60 W.
DISPLAY ON THE DEVICE: permanently red alarm LED. The relay and LED switch
off again when the opacity has gone below the pre- alarm threshold.
FAIL - SAFE ALARM
REMOTE SIGNALLING: relay with potential-free switch-over contact, excitation when
the device is functioning trouble free. Contact load max. 60V AC, 2 A, 120 VA / max.
60 V DC, 2 A, 60 W.
DISPLAY ON THE DEVICE: illuminated green READY - LED when the device is
functioning trouble free.
DISPLAYS
2 x 4 digit, 7 segment display for presentation of internal device measurement
values.
OPACITY DISPLAY
REMOTE SIGNALLING: By the remote indicator, driven through the optional
RS 485 interface.
DISPLAY ON THE DEVICE: By LED chain with 12 LEDs, display of the opacity
relative to the alarm threshold in 12 steps, i.e. the main alarm is triggered when the
upper LED illuminates.
OPERATING CONTROLS
3 wear-free reflection light buttons for operation of the device.
SERIAL INTERFACE
Optional serial RS 485 interface for the output of operating data.
CABLE CONNECTIONS
1 PG screwed connection for the cable connection of the relay contacts
1 PG screwed connection for the cable connection of the power supply
1 plug connector for connection of a serial interface.
33 KΩ
33 KΩ
06. 04

MECHANICAL DATA
HOUSING AND BASE PLATE: cast aluminium.
SUPPORT PLATE FOR THE MEASURING HEAD: stainless steel plate with anti
vibration suspension
ALL SURFACES: lacquered, RAL 7035.
SPRINGS, BOLTS ETC.: stainless steel.
RUBBER PARTS FOR VIBRATION REDUCTION AND SEALS: oil resistant. Built- in
vibration reduction for protection of the electronics.
WEIGHT
VN 115 / 93 Net: 9,0 kg, Gross with special packing: 12,5 kg
VN 116 / 93 Net: 11 kg, Gross with special packing: 14,5 kg
VN 215 / 93 Net: 11 kg, Gross with special packing: 14,5 kg
Enviromental Conditions
SYSTEM OF PROTECTION IP 44.
OPERATING RANGE: 0C to 70C with the highest humidity.
STORAGE TEMPERATURE: -25C to +85C
Vibration: 4 G at fastening points
1. 09
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Operating Instruction Visatron VN 93
06. 04

Dimensional
diagrams
VN 115 / 93
VN 116 / 93
1. 10 Operating Instruction Visatron VN 93
06. 04
453
140
171
111
Pg 21
G 1/2 A
G 3/4 A
146
158 36
140
53
174 175
43
49
G 1/2
G 3/4
120,5
120
120
453
140
169
111
Pg 21
G 3/4 A
146
111
158 36
G 1/2 A
146
140
G 1/2
G 3/4
53
174 175
43
49
113,5
175
140
175
140
190
190
Clearance for elastically- suspended measuring head
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1. 10 / 1
1. 10 / 2
4 threaded or connecting bore holes for M8 screws
Attachment
approx.159
Option Protective cover
(see section 9)
Clearance for elastically- suspended measuring head
4 threaded or connecting bore holes for M8 screws
Attachment
approx.159
Option Protective cover
(see section 9)

Dimensional
diagrams
VN 215 / 93
1. 11
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Operating Instruction Visatron VN 93
453
140
171
111
Pg 21
G 1/2 A
G 3/4 A
10
146
140
53
174 175
43
49
111,
18
28
56
155
120
190
175
140
06. 04
1. 11 / 1
Clearance for elastically- suspended measuring head
4 threaded or connecting bore holes for M8 screws
Attachment
approx.159
Option Protective cover
(see section 9)
9
8
7
1
2
3
4
56

Installation
General
It is important to emphasize cleanliness during the assembly work!
Clean pipelines and fastening parts before assembly.
Lay pipes in a stress- free manner!
Installation position of the device:
Locate the oil mist detector in a vertical position!
Make sure not to install the device within the airflow of blowers or air deflectors.
Suction pipes VN 115 / 93 and VN 116 / 93 (see Fig. 2.01 / 1)
Material: Seamless steel pipes,
header (1) 22 x 2 mm (i.d. 18mm), max. length: 9 m
suction pipes (2) 10 x 2 mm (i.d. not less than 6mm)
Pipe Laying: Ascending to the device,
ascending gradient 2% to 4%, without sagging, avoid oil collection
(see Fig. 2.01 / 1)
Ascending
Gradient 2% to 4%!
Consider to avoid oil
collection when laying
the headers! Oil must
always drain back to
engine
VN 115 / 93
VN 116 / 93
2. 01
Operating Instruction Visatron VN 93
2. 01 / 1
2% to 4%
1
2
06. 04
suction funnel

VN 115 / 93
VN 116 / 93
without
pipe end- siphon
Lay headers in
ascending direction
to the detector!
with
pipe end- siphon
Lay headers in
asccending direction
to the detector!
2. 02 Operating Instruction Visatron VN 93
!
2. 02 / 1
2. 02 / 2
1
2
1
2
Header pipe ø22 mm x 2 mm (i.d. 18mm)
Compartment suction pipes to header ø10 mm x 2 mm
(i.d. not less than 6mm)
Headers above suction points for:
1
2
3
3*Pipe end-siphon 100 mm with oil return back to the engine,
or 200 mm with oil discharge outside the engine
Headers below suction points:
06. 04
*100mm
or
200mm

VN 215 / 93
Lay suction pipes in
ascending direction
to the detector
Siphon blocks
Pipes can be
mounted horizontally
Avoid sagging or
oil collection
2. 03
Operating Instruction Visatron VN 93
Suction pipes VN 215 / 93
Material: Seamless steel pipes, 14 mm x 2 mm (i.d. 10mm)
Pipe Laying: Ascending to the device, ascending gradient 2 - 4% (see Fig. 2. 03 / 1)
!
2. 03 / 1
2. 03 / 2
!
Suction funnel
Suction funnel
06. 04

2. 04 / 3
2. 04 Operating Instruction Visatron VN 93
Suction funnel in the crankcase compartment
Suction funnels have the function to avoid the blockage of suction pipes by
splashing oil. The suction funnels have to be fitted in such a way that flooding
by splashing bearing oil or returning piston cooling oil is avoided
(see Fig. 2. 04 / 1). Caution: Make sure funnels are not interfering with rotating
or moving parts of the engine.
Sense of
rotation
Push in
suction funnel pipe
firmly to the stop
during assembly!
Observe mounting
position!
2. 04 / 1
Suction funnel
for sipons and
engine wall connection
Suction funnel
for siphons and
engine wall connection
Suction funnel
only for
engine wall connection
2. 04 / 2
Engine wal
Suction funnel with
oil discharge labyrinth
Crankcase
compartment
Oil mist
Straight engine wall connection
Engine wall connection L - type
Engine wall connection LL - type
Sense of
engine rotation
!
Oil return
06. 04

2. 05
operating Instruction Visatron VN 93
06. 04
2. 05 / 1
Installation of siphon blocks