Power And Input/Output Signal Requirements; Electrical Connections - Turner Designs TD-107 5.0 Operation Manual

4.5 Power and Input/Output Signal
Requirements
4.5.1 Power
Required Power: 20-240 VAC, 50/60 Hz,
15 W or 20-240 VDC. Power must be
connected to the monitor at all times.
4.5.2 Input Signals
5.0
The TD-107 OCM requires two input
signals for operation. They are the Oily
Water Separator (OWS) Status signal and
the Flow Status signal. These signals
communicate to the TD-107
there is an operational OWS connected and
the status of its function. The following input
signal is required for both the Separator
Status and Flow Status signals.
•
Input Required: Continuity or a 3–28
VDC, min 10 mA, max 100 mA signal.
If the Separator Status input signal
is not present, the monitor will send
an alarm signal to close the
overboard discharge valve. This alarm
signal functions in the same manner as the
High (5 ppm) Alarm signal.
4.5.3 Output Signal Relays
There are five output signal relays providing
information on the sample and the system
5.0
status of the TD-107
follows: High (5 ppm) Signal Alarm, Early
Warning, Zero Signal Alarm, System Alarm
and Cell Condition Alarm. The relay
specifications are:
•
Relay Type: Normally Open
(NO)/Normally Closed(NC) dry contact
•
Relay contact rating: 240 VAC or 28
VDC, 6 A.
The High (5 ppm) Signal Alarm
relay output must be connected
to the vessel's diverter valve (or
to the system that controls the valve) in
order for it to actuate the valve. If the
High (5 ppm) Signal Alarm relay is not
properly connected, the instrument will
5.0
OCM that
OCM. They are as
TD-107
still indicate an alarm condition but
overboard discharge will not cease.
4.5.4 Signal Output
One internally-powered 4–20 mA signal
(isolated) providing a 0.0–30.0 ppm
measurement range.
4.5.5 USB
The USB port is located internally on the
Datalogger PCB. It must remain accessible
for data retrieval. Only USB sticks which do
not have internal compression programs will
function correctly, these are available
through NAG Marine or TDHI.

4.6 Electrical Connections

Only trained personnel should
make electrical connections.
Refer to the General Arrangement
Drawings for the input and output terminal
locations required for the power, alarm
outputs, process status inputs, and 4–20
mA connections.
Do not break the provided tamper
evident DNV certification seals for
any reason. Breaking such seals will
invalidate the DNV certification of the
monitor.
The 4–20 mA output is internally
powered and internally shielded. DO
NOT connect customer end of shield
to ground.
4.6.1. Making Wiring Connections
To connect a wire to the pre-wired cabling:
1. Turn off main power to the instrument at
the breaker.
2. Verify all process inputs and switched
outputs are off.
3. Terminate the wire cabling as mandated
by shipboard requirements in junction
boxes.
9
5.0
Oil Content Monitor
Operation Manual