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6.5.2 Starter box
The starter box is used to switch and control the electrical supply to the sample pump motor and
contains a relay and thermal relay to protect the pump for overheating. It may be mounted to any
suitable location adjacent to the EPU or pump motor. The unit is mounted by four holes which
accept 4 mm bolts.
Reference drawings
Control drawing for Mark 6M Oil Discharge Monitor 0806-0005
Dimensional drawing motor starter box Ballast Monitor Mark 6 0806-1075
Dimensional drawing and parts list EPU 1-2 sample valves Mark 6M 0806-1287
Connection diagram motor starter box Mark 6 0806-2032
Electrical connection diagram Ballast Monitor Mark 6M MEPC 108(49) 0806-2048
Schematic installation diagram Oilcon Monitor System with 1x dP/I
transmitter Mark 6 0806-8035
Bulkhead penetration and piping diagram Mark 6M 0806-8038
6.6 CONTROL ROOM EQUIPMENT – MAIN CONTROL UNIT (MCU)
This unit is normally mounted in the cargo control room and may be fitted into an appropriate space
in one of the cargo control consoles, or wall mounted via a suitable wall mount box.
The Main control Unit is suitable for mounting into the console.
6.6.1 Speed input
1. The Main Control Unit is designed to accept a GPS NMEA 0183 input, baud rate: 4800, data
bits: 8, parity: none, stop bits: 1.
IMPORTANT:
The latitude/longitude position command to be set with four (4) digits behind comma.
The following NMEA0183 position messages can be accepted by the Main Control Unit:
o RMC (Recommended Minimum Specific GNSS Data)
o GLL (Geographic Position- Latitude/Longitude)
o GGA (Global Position System Fix Data)
The following NMEA0183 speed message can be accepted by the Main Control Unit:
o VTG (Course over ground and ground speed)
2. The Main Control Unit is designed to accept a voltage free pulse signal from the ship’s log or
a similar device. Input pulses can be either 100, 200 or 400 pulses/NM.
6.6.2 Overboard valve control
The overboard valve is controlled by the MCU. To achieve this, the MCU is provided with a double
pole switchover relay contact (discharge control relay) to control the discharge valve operation.
The valve feedback signal must be connected to the appropriate input terminal at the back of the
MCU.
In case of system failure the Auto/Man relay contact can be used to override the MCU command, to
switchover to manual operation. The relay contact is controlled by the key switch on front of the
MCU.
Reference drawings
Dimensional drawing MCU Mark 6M 0806-1285
Electrical connection diagram Ballast Monitor Mark 6M MEPC 108(49) 0806-2048
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