Publication P/N 1100641
Installation Manual
400 Series
SDU 410 Safety Shutdown Unit, P/N 1006451
Table of contents
1 Preface
1.1 About this Manual
1.2 Responsibilities
1.3 Revisions
1.3.1 Document History
2 System Overview
2.1 DCU Engine Controller
2.2 RP Remote Panel
2.3 Ethernet Switch
2.4 Expansion
3 Installation
3.1 General
3.2 LED Overview
3.2.1 Status LEDs
3.2.2 Active LEDs
3.2.3 Fault LEDs
3.3 Relays
3.4 Wiring
3.4.1 24VDC Supply
3.4.2 Switch Channels
3.4.3 Pickup Channels
3.4.4 Shutdown Coil
3.4.5 Shutdown Override
3.5 DCU Communication
3.5.1 Connections
4
4
4
4
4
3
3
3
3
3
9
9
9
10
8
8
8
8
6
6
7
5
5
5
5
3.5.2 Configuration Mismatch Warning
10
3.6 Buttons 10
3.6.1 Acknowledge
3.6.2 Overspeed Test
10
10
4 Configuration
4.1 Factory Default Configuration
4.1.1 Active Channels
4.1.2 Loop Detection
10
10
10
11
4.1.3 Table Explanation 11
4.2 Configure SDU Through the DCU 12
4.3 Configure SDU Directly 13
4.3.1 Status Miscellaneous
4.3.2 Status Channels
4.3.3 Pickup
4.3.4 Channels
4.3.5 Connections
4.3.6 Miscellaneous
4.3.7 Reset alarms
4.3.8 Change password
4.3.9 Changed configuration history 17
4.3.10 Log out 17
4.3.11 About 17
16
17
17
17
14
15
15
15
5 Appendix A – Front 17
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1 Preface
1.1 About this Manual
This manual has been published primarily for professionals and qualified personnel.
The user of this material is assumed to have basic knowledge in marine systems, and must be able to carry out related electrical work.
Installation or work on the shore power equipment must only be carried out by electricians authorized to work with such installations.
1.2 Responsibilities
approved material and accessories are used and that the installation meets all applicable rules and regulations.
Auto-Maskin continuously upgrades its products and reserves the right to make changes and improvements without prior notice.
All information in this manual is based upon information at the time of printing. For updated information, please contact your local distributor.
The crossed-out wheeled bin symbol indicates that the item should be disposed of separately. The item should be handed in for recycling in accordance with local environmental regulations for waste disposal.
By separating a marked item, you will help reduce the volume of waste sent to incinerators or land-fill and minimize any potential negative impact on human health and the environment.
1.3 Revisions
Manual revision: November 2020
1.3.1 Document History
Revision Date Description
1.0
1.1
31.09.2017 Initial Release Revision (Upgraded from former QIG ver. 1.2)
24.11.2020 Updated manual template. Minor adjustments.
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2 System Overview
The figure below shows a simple layout with the SDU included for one engine.
2.1 DCU Engine Controller
A DCU 410/210 (E or Classic) Engine Controller unit is the main building block in a Marine
Pro System. Engine sensor values are displayed on the color screen, and commands and other user interaction is also available from here.
2.2 RP Remote Panel
The optional RP 410/210 (E or Classic) remote panel brings the DCU display to a remote location with no need for any configuration.
2.3 Ethernet Switch
Our recommendation is to include an Ethernet switch always. Even if it is possible to use a cable only for simple installations with one DCU and one RP. PC connection for configuration and setup is also more convenient with the Ethernet switch available.
2.4 Expansion
The system can be expanded with more input and output channels using different RIO
(Remote I/O) units.
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3 Installation
This chapter covers the installation of the SDU 410.
3.1 General
The SDU 410 is an engine safety module.
It is primarily designed to be used together with the Marine Pro 400 Series, but it can also be used standalone.
It can be installed separate from the DCU or in the same cabinet.
The engine shutdown switches shall be wired to the switch input channels on the SDU 410.
The two-wire SDU Link shall be established between the DCU and the SDU.
3.2 LED Overview
There are three groups of LEDs:
● Status (green LEDs)
● Shutdown (red LEDs)
● Fault (amber LEDs)
3.2.1 Status LEDs
Green LEDs with SDU status.
LED Description
POWER
LOAD REDUCTION
Lit when power is applied and above 23V.
Flashing if voltage is below 23V.
Alarm if voltage is below 23V + 30 seconds. This will activate the buzzer and the Fault relay.
Note!
The SDU will disable all channels if the power supply is below
21 V.
LED lit when SDU is in load reduction state. That is, when any of the
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RUNNING configured channels are indicating load reduction.
LED activates when the SDU senses engine speed above configured setpoint, typically 400 rpm.
TACHO 1
TACHO 2
LED lit if engine speed above 5 rpm.
LED lit if engine speed above 5 rpm.
SHUTDOWN OVERRIDE The Shutdown Override input channel is activated.
BUZZER The built-in buzzer is active.
COM 1
COM 2
COM 3
Flashes when the SDU communicates with a DCU engine panel.
Flashes when the SDU communicates on its Modbus RTU interface.
Flashes when the SDU communicates on the ethernet interface.
3.2.2 Active LEDs
Red LEDs with switch channel and load reduction/shutdown status.
LED ACTIVE
SWITCH 1-8 Lit when in load reduction or shutdown.
SHUTDOWN
OVERSPEED
Lit for any shutdown situation.
Lit when in Overspeed.
Quick flash when in Overspeed Test mode.
3.2.3 Fault LEDs
Amber LEDs with switch channel and shutdown fault status.
LED Description
SWITCH 1-8
SHUTDOWN COIL
Flashing (lit when acknowledged) if the SDU detected a fault on the respective channel.
The channel is disabled.
All switch channels require a 10k loop detection resistor across the switch.
Flashing (lit when acknowledged) if the SDU detected a fault on the channel.
The connected relay coil impedance must be in
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SHUTDOWN OVERRIDE the range 300 to 700 ohms.
Broken loop, or a short to 0V or 24V, is detected on the Shutdown Override input.
Connect a 10k resistor for loop detection.
3.3 Relays
One relay is dedicated to Shutdown. The other 4 relays can be configured to the following functions.
Relay Function Description
SHUTDOWN
CRANK CUTOFF
BUZZER
FAULT
RUNNING
OVERSPEED SHUTDOWN
OVERSPEED TEST MODE
SHUTDOWN OVERRIDE #1
Activates for any shutdown.
Stays activated until engine has stopped, and the operator command the Acknowledge button.
Activates at the configured Engine Run setpoint, typically
400 rpm.
Deactivates when the SDU senses that the engine has stopped (<5 RPM).
Activates for any new shutdown or fault.
Deactivates when the operator command the Acknowledge button.
This is the Common Fault indication.
Activates for any new fault.
Deactivates when all faults are acknowledged and has disappeared. Note!
Inverted.
Activates at the configured Engine Run setpoint, typically
400 rpm.
Deactivates when the SDU senses that the engine has stopped.
Activates if the SDU senses an overspeed shutdown.
Deactivates when the engine is stopped and the event is acknowledged.
Activates when the SDU is in overspeed test mode.
Activates when the SDU is in shutdown override mode.
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SHUTDOWN OVERRIDE #2 Activates if any of the channels are configured as
“Shutdown Override #2”, and at least one of these inputs are active.
LOAD REDUCTION Activates when in load reduction state.
DELAYED SHUTDOWN IMMINENT Activates when the SDU will perform a shutdown, but the channel has a delayed shutdown configured.
3.4 Wiring
Follow these wiring guidelines.
3.4.1 24VDC Supply
Connect 24VDC (positive) to terminal 1 and 0V (negative) to terminal 2.
Connect Shield/Ground to terminal 3.
Wire Requirement
SDU supply wires shall have a minimum area of 1.0 mm 2 .
3.4.2 Switch Channels
All switch channels use a two-wire layout, where both wires from the switch are to be routed to the SDU.
Wire Requirement
Switch wires shall have a minimum area of 0.5 mm 2 .
Loop Detection
Each switch input shall add a 10k resistor connected across.
The 10k resistor shall be connected directly at the switch, and not at the SDU 410.
Switches shall be normally open (NO), and shall close to indicate engine shutdown.
3.4.3 Pickup Channels
The SDU can operate with one or two magnetic pickup sources.
One channel is required. Some societies require the use of two channels.
Make sure the cable shield is connected at the SDU side and not at the pickup side.
Pickup 1
Connect one pickup to terminals 9 and 10, with shield to terminal 8.
Pickup 2
Connect an additional pickup to terminals 12 and 13, with shield to terminal 11.
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3.4.4 Shutdown Coil
Connect a separate 24V supply to terminals 6 and 7.
The supply must be powerful enough to supply the shutdown coil connected to terminals 4 and 5.
3.4.5 Shutdown Override
This is to be wired exactly like a Switch Input, that is; it shall be a normally open switch.
Close the switch to activate Shutdown Override.
Make sure a 10k resistor is connected across the switch.
3.5 DCU Communication
Depending on the DCU model connect the wires in the shielded communication cable to the terminals as shown in the table below.
SDU 410 DCU 410E /
DCU 408E
DCU 210E /
DCU 208E
DCU 210 /
DCU 208
30 (Shield)
29 (L)
28 (H)
60 (Shield)
61 (L)
62 (H)
N/A
5 (L)
6 (H)
22 (Shield)
23 (L)
24 (H)
Connect the cable shield at one end only.
To minimize the effect of external noise it is recommended to use twisted pair wires.
The SDU Link shall be terminated with a 120 ohm resistor at the end of the communication link. Note that the DCU is already terminated internally.
The maximum length of the SDU Link shall be 30 metres.
If there are several units attached to the link place the 120 ohm termination resistor close to the last unit on the bus.
In addition, the stubs shall be as short as possible.
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3.5.1 Connections
The two-wire SDU Link has fixed communication parameters.
The Baud rate is 19200 baud.
● 8 data bits
● 1 stop bit
● Even parity
When properly connected, the DCU will find the SDU automatically. To start using the SDU, enable it via the DCU web interface.
3.5.2 Configuration Mismatch Warning
When the SDU is connected to the DCU, the DCU will analyze the configuration in the SDU and compare it to the stored configuration in the DCU. If these do not match, the DCU will give a “Configuration Mismatch” warning.
The warning can be acknowledged, but DCU login rights are required to reset this warning.
With login rights, the configuration can be copied from the DCU to the SDU, or vice versa.
Please see the relevant Marine Pro manual for further details.
3.6 Buttons
3.6.1 Acknowledge
This button is used to acknowledge alarms and faults. See User’s Manual for more details.
3.6.2 Overspeed Test
Press and hold the “Overspeed Test” button for more than two seconds to enter the overspeed test mode. See User’s Manual for more details.
4 Configuration
The SDU 410 has eight switch input channels, and two magnetic pickup channels.
4.1 Factory Default Configuration
The SDU 410 comes with a predefined configuration from factory.
Often, the default configuration can be used as is. If for instance channels 3 and 4 are not to be used, then connect a 10k loop detection resistor across the wire terminals on the respective channel.
Without anything connected to an enabled channel the SDU will indicate with a channel fault.
4.1.1 Active Channels
Channels 1-5 are enabled and predefined according to the table below.
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4.1.2 Loop Detection
If a channel is active and shall not be used, then a 10k resistor must be connected across the wire terminals on that switch input channel.
Otherwise, the SDU will indicate with a fault on that channel.
Channel Description Enabled A B C D E F
3
4
1
2
7
8
5
6
Overspeed
Coolant Temp
Coolant Pressure
Lube Oil Presure LSR
Lube Oil Pressure HSR
Remote Engine Stop
Reserver #1
Reserved #2
Reserved #3
Engine Overspeed
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
-
-
2
-
0.1
2
2
2
2
-
-
-
-
-
-
15
15
15
-
-
No
-
No
No
No
No
Yes
-
-
-
-
No No
No Yes, 600
No Yes, 600
No Yes, 1400
-
-
No
-
-
-
-
-
-
1725
-
-
-
-
4.1.3 Table Explanation
The following is an explanation of the table header letters A-F.
A – Delay before Shutdown (sec)
This is the time from the switch close until the SDU activates the shutdown and stops the engine.
B – On RUN only (Yes/No)
If Yes , the SDU activates shutdown when the engine is running only.
The SDU see the engine as running when the engine speed is higher than the setpoint configured in the SDU.
C – Disabled this long after RUN/RPM threshold (sec)
When the engine rpm reaches the running setpoint, this timer starts.
When the time has elapsed, the channel is enabled.
D – Still enabled in Shutdown Override
Activating the Shutdown Override input does not disable these channels.
E – RPM Enabled Dependent, threshold (rpm)
Engine speed need to be above this setpoint to enable the channel.
F – Overspeed Shutdown setpoint
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If the engine speed is above this value – for longer time than the value in A – the SDU will shut down the engine.
The engine running setpoint is set to 500 rpm.
The pulses/revolution is set to 149.
The Nominal/Rated speed is set to 1500 rpm.
4.2 Configure SDU Through the DCU
The easiest and preferred method of configuring the SDU is to login to the DCU Engine
Controller web-server.
1. Connect an Ethernet cable between the PC and the DCU.
The configuration is stored in the DCU’s current active configuration file, and is transferred to the SDU when it is connected.
When logged in, enter the SDU section and configure the SDU. A login dialog similar to the one below will appear:
In the login dialog, type the DCU User Name and Password.
The factory default is
● User Name: DCU
● Password: 1234
Then, the following shall appear:
1 To see the actual IP address in the DCU: In the DCU user interface, select Menu – Help – Version
Information.
2 In this example, we are logging in to a DCU with IP address = 192.168.0.104.
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Next, from the menu on the left, select the sub-section to be configured.
Press the Submit button after each configuration change.
For more configuration information, please consult the Marine Pro Installation Manual.
4.3 Configure SDU Directly
This option should be selected only if the SDU is used standalone; without a DCU engine panel.
To configure the SDU directly, a login with administrator rights are required.
● Connect an Ethernet cable between the PC and the SDU.
● Set the PC to use a static IP, see the example below.
● Disable any active wireless communication on the PC.
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Then, in the internet browser, type the IP address of the SDU. The default SDU 410 IP address is 192.168.1.100
.
An administrator can have changed the last digit to anything between 100 and
109. These are the only possible IP addresses on the SDU.
The SDU login page will then appear as below:
Type the administrator SDU User name and Password:
● User name: admin
● Password: Password
Mind the upper- and lower case letters in the user name and password above.
The browser is now logged in to the SDU web-server directly.
Remember to press the Save button after each configuration change.
4.3.1 Status Miscellaneous
Here, the SDU lists miscellaneous status for power supply and certain internal status.
This is just an overview and no changes can be made here.
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4.3.2 Status Channels
This page gives a status of the eight switch shutdown channels.
This is just an overview and no changes can be made here.
4.3.3 Pickup
This page has the configuration of each pickup channel.
Select channel “1” or channel “2” , then press OK.
Set the parameters for the channel, and then press Save.
Active
Check this to make the channel active.
Password Protection
Check this to protect the channel from any changes without admin rights.
Number of pulses/rev.
Set the pulses per engine revolution from the engine datasheet.
Running speed
The SDU detects the engine as running when above this rpm setpoint.
The Crank Cutoff and Running relay both activates when above this setpoint.
Normal speed
For auxiliary engines, set the normal engine operating speed.
For propulsion engines, set the maximum engine operating speed.
Overspeed
Set the engine overspeed setpoint.
Also set the time (in 1/10th sec) the engine is allowed above this setpoint before the SDU is activating engine shutdown.
4.3.4 Channels
This page has the configuration for each of the eight switch channels.
First, select a channel, and then press OK .
Set the parameters for the channel, and then press Save .
Event
Can be either Disabled, Shutdown, Load Reduction or Shutdown Override #2.
Password Protection
Check this to protect the channel from any changes without admin rights.
Delay before activation
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Set the number of seconds until the channel is enabled after engine is detected running.
Delayed Shutdown
Set the number of seconds for a delayed shutdown.
Action on RUN only
Check this if the channel shall be enabled only when the engine is running.
This is typical for all pressure channels.
Initial delay
Set the number of seconds until engine shutdown after contact closure. If the contact opens while this timer is running, then the timer is reset.
Shutdown override inhibit
Check this if the channel shall always be enabled, also if Shutdown Override is selected.
This is typical for a manual E-stop button.
Shutdown override #2 inhibit
Check this is the channel load reduction/shutdown shall be ignored when secondary shutdown override is active.
Enable speed dependency
Check this to make the channel enable above a certain engine speed.
The actual engine speed is set in the Speed limit section next.
● If the engine speed is above the set value, then the channel is enabled.
● If the engine speed drops below the set value, then the channel is disabled.
4.3.5 Connections
Configure communication parameters.
IP address
Set the last figure of the IP address. Unless there is an IP address conflict this should be set to 100 .
Modbus 2 ID
Set the Modbus ID address for the COM 2 RS-485 Modbus communication port.
Baudrate
Set the Modbus baudrate, either 9600 or 19200 baud.
The fixed Modbus parameters are
● 8 databits
● 1 stopbit
● Even parity
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4.3.6 Miscellaneous
Set miscellaneous configuration.
Buzzer Off
Check this to make the SDU buzzer silence automatically after five seconds.
Disable shutdown coil fault
Check this to disable the fault indication given by the SDU if no shutdown relay coil is connected on the SDU terminals 4 and 5.
4.3.7 Reset alarms
Click the Reset button to reset all alarms on the SDU.
This does the same as the physical Acknowledge button on the SDU.
4.3.8 Change password
Change the Administrator login password to secure the password protected channels.
If the password is lost, the SDU gives an encrypted password that can be unlocked. Contact the distributor for more details.
4.3.9 Changed configuration history
See the dates for the ten latest configuration changes.
4.3.10 Log out
Immediately logs out.
A new login is required to continue configuration.
4.3.11 About
See the firmware version the SDU is running.
5 Appendix A – Front
Front side and Connectors
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Power Supply
Shutdown Coil
Tacho /
MPU Input 1 & 2
Shutdown Relay
Configurable Relay #1
Configurable Relay #2
Configurable Relay #3
Configurable Relay #4
COM 1: DCU Link
COM 2: Modbus RTU
COM 4: USB COM 3: Configuration / Ethernet
Inputs
Switch 1
Switch 2
Switch 3
Switch 4
Switch 5
Switch 6
Switch 7
Switch 8
Shutdown Override
Acknowledge
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