Daihatsu MD-SX User manual

JULY. 2015
INB000044D
OIL MIST DETECTOR
INSTRUCTION MANUAL
MD-SX
(Sensor type)
Original content from www.daihatsu.cc
Issued to HORIZON TANKERS LIMITED S.A.

Safety Precautions on Operation of Oil Mist Detector
This Manual describes cautionary items for installation and operation of the oil mist
detector for sake of safe use.
Please operate the equipment adequately while following the cautionary items.
The degree of hazard and damage likely to result from wrong use, neglecting the indicated
cautions, is explained in this Manual using symbol marks shown below.
The symbol marks mean as follows.
·········· CAUTION
State likely to cause damage of light or middle degree is
indicated, unless the state is avoided or prevented.
1. Caution for electric shock
(1) Voltage is left in the internal terminal block, even if the body POWER
turned OFF.
Please switch off the controller every time when sensor is replaced or
disconnected from sensor connector, otherwise, it may cause not only the
electric shock but the breakdown of the equipments.
(2) Especially, when 100 V AC is used for signal output contacts, please be
careful for electric shock from the terminal block.
2. Caution against current leakage
(1) To prevent electric leakage, please be sure to ground the equipment.
* The specification may be changed for improvement with no advance notice.
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CONTENTS
1. OVERVIEW......................................................................................................................... 1
2. FEATURES .......................................................................................................................... 1
3. CONSTITUTION................................................................................................................. 2
4. OUTLINE............................................................................................................................. 4
5. SPECIFICATIONS.............................................................................................................. 8
5.1 Sensor unit ........................................................................................................................ 8
5.2 Controller.......................................................................................................................... 9
6. DISPLAY AND FUNCTIONS OF SENSOR UNIT ...................................................... 10
6.1 Description of function................................................................................................... 10
6.2 “POWER” LED.............................................................................................................. 10
6.3 “ALARM” LED.............................................................................................................. 10
6.4 “FAILURE” LED ........................................................................................................... 10
7. DISPLAY AND FUNCTIONS OF CONTROLLER..................................................... 11
7.1 Mist indicator.................................................................................................................. 11
7.2 “RUN” LED.................................................................................................................... 11
7.3 “SYSTEM FAILURE” LED........................................................................................... 12
7.4 “PRE ALARM” and “HIGH ALARM” LEDs............................................................... 12
7.5 [STEP] keys and [ENTER] key...................................................................................... 13
7.6 [INITIAL SET] key switch............................................................................................. 13
7.7 [TEST] key switch.......................................................................................................... 13
7.8 [MODE] key switch........................................................................................................ 14
8. INSTALLATION.............................................................................................................. 15
8.1 Sensor unit........................................................................................................................... 15
8.2 Controller ............................................................................................................................ 18
9. WIRING............................................................................................................................. 19
9.1 CABLE ........................................................................................................................... 20
9.2 Wiring of the sensor........................................................................................................ 22
・9.3 Wiring of the controller ............................................................................................ 23
9.4 Setting of resistance for detecting disconnection............................................................ 26
9.5 Wiring of the gland type sensors .................................................................................... 27
9.6 Cautions in wiring........................................................................................................... 27
10. INITIAL SETUP............................................................................................................... 29
10.1 Initial setup of sensor units............................................................................................. 29
10.2 Initial setup of controller................................................................................................. 30
11. OPERATION.................................................................................................................... 31
11.1 Checks before turning the power on............................................................................... 31
11.2 Steps from the first power ON to practical operation..................................................... 31
11.3 Full load (mist density level) setting............................................................................... 33
11.4 Initial reset ...................................................................................................................... 34
11.5 Alarm operation check.................................................................................................... 34
12. TEST METHOD AND OPERATION CHECK (FOR IACS M10.13) ........................ 36
13. APPROXIMATE VALUE OF MIST DENSITY........................................................... 37
14. MAINTENANCE.............................................................................................................. 38
15. TROUBLESHOOTING................................................................................................... 40
15.1 TROUBLESHOOTING by controller indicate................................................................. 40
15.2 Sensor fail code at LCD on the controller....................................................................... 43
15.3 Sensor clean code at LCD on the controller ................................................................... 43
15.4TROUBLESHOOTING by sensor unit indicate................................................................ 44
16. APPENDIX........................................................................................................................ 45
16.1 Parts list........................................................................................................................... 45
16.2 Anti-vibration bracket mounting drawing (OPTION) .................................................... 48
16.3 Sensor cleaning procedure.............................................................................................. 48
16.4 Attention of using LOOP wiring for sensor cable routing.............................................. 53
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1. OVERVIEW
This equipment consists of “sensor units” that are directly mounted through the wall on the crankcase side of a
diesel engine or gas engine (or EGR system : option) that collectively controls the units by communication
means and “controller”.
This equipment was developed by applying new techniques and ideas based on our long-term accumulated
techniques related to detection of oil mist density. For detection of mist by the sensor units, the equipment uses
a natural diffusion system that does not require mechanically moving parts, such as a suction mechanism,
driving air or piping. Compact design, improved reliability and easy maintenance are realized by the use of the
light scattering system for detection of mist density.
The maximum number of detection points is 16. Except for the ship engine with classifications approved, this
system can use the sensor for the 8 cylinders (max.) on two engines. The system is very flexible for controller
layout and installations.
Since the controller has key switches and an LCD, the operability is improved, and the conditions of the whole
equipment including the sensor units can be monitored by the self-diagnostic function.
The oil mist density in the crankcase is constantly monitored. When the oil mist density exceeds the setting
owing to overheated bearings, an alarm will be given, and a signal will be output to the outside. Not only on
low-speed engines, but also on middle- to high-speed engines, serious failures can be found early or predicted.
2. FEATURES
(1) For mist detection by the sensor units, a natural diffusion system is used.
This eliminates the necessity of such fan suction mechanism, piping and driving air that the conventional
systems required.
(2) The mist detection section consists of a light emitting element (LED) and a light receiving element (PD:
photodiode). The use of the light scattering detecting technique reduced the equipment size and realized
high-sensitivity detection excelling in stability.
(3) The sensor units do not have mechanically moving parts. They are light and excel in durability and
vibration resistance.
(4) Output variations due to changes in temperature are automatically corrected.
In addition any adjustment is not necessary for the sensitivity deterioration by contamination. It can be used for
the long term by cleaning sensor hood.
(Please refer to 16.3 sensor cleaning procedure)
(5) The use of a single-chip microcomputer ensures high-performance stable detection.
(6) The use of data communication techniques realizes daisy chain wiring-saved connection for power supply
lines and communication lines between sensor units and between the controller and each sensor unit.
(7) The mist indicator on the controller consists of 16 LEDs in three colors and is clear. For alarm detection, a
two-stage system (pre-alarm and high-alarm) is used.
(8) The controller is provided with key switches and an LCD to improve the operability.
(9) It is possible to connect an external output unit for an external monitor. (Option)
(10) Since the connector is used for wiring connection of the sensors, wiring work is easy.
(Connector type)
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3. CONSTITUTION
It is possible to install MD-SX oil mist detection system for ONE engine or TWO engines.
(1) In case of install MD-SX system for one engine. (For ship: refer to IACS UR M10.12)
Fig. 1 Install MD-SX system on one engine
(2) In case of install MD-SX system for two engines. (For land or ship use without classification approved)
Fig. 2 Install MD-SX system on two engines
MD-SX SENOSR
JUNCTION BOX
MD-SX CONTROLLER
24Vdc POWER SUPPLY
RELAY OUTPUTS（to Alarm
Monitoring System）
MD-SX
special cables
Marine cable
（shielded）
DIESEL ENGINE
MD-SX SENOSR
JUNCTION BOX
MD-SX CONTROLLER
24Vdc POWER SUPPLY
RELAY OUTPUTS（to Alarm
Monitoring System）
Marine cable
（shielded）
DIESEL ENGINE
MD-SX SENOSR
JUNCTION BOX
DIESEL ENGINE
MD-SX
special cables
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16 sensors can be installed for one engine at the maximum.
16 sensors can be installed in total at the maximum for two engines, 8 sensors each for an engine.*
Wire the sensors in daisy chain system (connection-in-a-row system) for each engine.
Limit the total length of the telecommunication cable from the sensor of an end to a controller is less than
150 m (for use of Daihatsu option cables). In case of the total wire length exceed 150 m, please ask the wiring
method to Daihatsu.
The wiring between sensors and controller shall be used Daihatsu option cables (the cable with connectors).
(Note: When installing a junction box between a controller and sensors, a general cable for ships can be used
between the controller and the junction box.)
Mount the sensor directly on the engine frame.
Use the specified rubber cushions to isolate the controller from vibration if it is directly mounted on the
engine body.
Before using the mounting method described above, please contact us.
For ship use, it may be limited by the shipping classification society with one oil mist detector system 1
formula per engine. Please follow the rule of each shipping classification society.
For sensor wiring method, The loop wiring also applicable other than daisy chain method
（Please refer to 16.4 Attention of using LOOP wiring for sensor cable routing）
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4. OUTLINE
(1) DOWN WARD SENSOR UNIT
STANDARD TYPE (CONNECTOR TYPE)
CABLE GLAND TYPE
FLYING-LEAD TYPE
Fig. 3 MD-SX OUTLINE OF DOWN WARD SENSOR UNIT
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(2)HORIZONTAL CABLE SENSOR UNIT
STANDARD TYPE (CONNECTOR TYPE)
FLYING-LEAD TYPE
Fig. 4 OUTLINE OF HORIZONTALCABLE SENSOR UNIT．
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(2) CONTROLLER
Wall mount type(with cable gland)
Wall mount type(with cable comb)
Fig. 5 Controller outside
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Flush mount type
Fig. 6 Controller outside
PANEL CUT
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