RLE LD300 User Manual

SeaHawk LD300 Quick Start Guide

Thank you for purchasing a SeaHawk
LD300 single-zone leak detection
controller. This guide outlines device
installation and operation.

If you need further assistance, please
contact RLE Technologies via our website

- http://www.rletech.com/ (go to the
Support link) or call us at 970-484-6510,
Option 2.

2. Unscrew the EOL from the end of the leader cable.

3. Attach the length of sensing cable to the leader cable.

4. Route the sensing cable according to your cable layout diagram.

5. Secure the EOL to the unoccupied end of the sensing cable.

Connect the Relay Outputs

The LD300 can be used as a stand-alone device, but it does have two Form
C relay outputs that communicate leak and fault status to another device or
system. If you wish to use the relay outputs, wire them at this time.

Connect the Power and Wiring Connections

The LD300 requires a 5 VDC power supply. To avoid product damage or personal
injury, wire power to the slots labeled + and – in the DC IN terminal blocks.
Establish all wiring connections, including sensing cable, relay outputs, and
power before you activate the board’s power supply.

v2.2

(1/2014)

© Raymond & Lae Engineering, Inc. 2011. All rights reserved. RLE® is a registered trademark and Seahawk™, Falcon™, and Raptor™ are
trademarks of Raymond & Lae Engineering, Inc. The products sold by Raymond & Lae Engineering, Inc. are subject to the limited warranty, limited
liability, and other terms and conditions of sale set forth at http://rletech.com/RLE-Terms-and-Conditions.html.

Supplies for Installation

Included with the LD300

15 foot (4.57m) leader cable
End-of-line terminator (EOL)
Wall mounting hardware

Available from RLE, sold separately

SeaHawk sensing cable, up to 300 feet (91.4m)
100-240V to 5VDC power supply (WA-DC-5-ST)

Mount the Device

Remove the cover from the LD300 to expose the mounting holes. Use the
provided hardware to mount the LD300 in the desired location.

Connect the Sensing Cable

Leader cable is used to connect sensing cable to the LD300, since sensing cable
cannot connect directly to the device.

1. Insert the four stripped wires of the leader cable into the appropriate slots in
the Cable Input terminal block at the bottom right corner of the LD300:

White wire: insert into pinout labeled W
Black wire: insert into pinout labeled B
Green wire: insert into pinout labeled G
Red wire: insert into pinout labeled R

Program Jumpers

The LD300 has two sets of three-pin jumpers. JP1 is used to congure the
sensitivity of the leak setting. JP2 congures the relay outputs. If you change
the jumpers, you must cycle power to the LD300 in order for it to recognize the
change.

JP1

Set the leak sensitivity

Jumper spans top two pins High sensitivity - most sensitive - system alarms with

.5” (13mm) wetted cable

Jumper is not installed Medium sensitivity - system alarms with 2” (51mm)

wetted cable

Jumper spans bottom two pins Low sensitivity - least sensitive - system alarms with 6”

(152mm) wetted cable

JP2

Relay Output Conguration

Jumper spans top two pins Relay is supervised - the relay remains ON until either

power is disabled or an alarm is detected - at which
time the relay turns OFF.

Jumper spans bottom two pins Relay is non-supervised - the relay remains OFF until

an alarm is detected - at which time the relay turns
ON.

LED

The LD300 has one LED, which is used to report a variety of device conditions.

Power On / Normal - The LED is on and displays a solid green color during
normal operation, with no alarm present.

Cable Break - The LED ashes twice and then pauses for two seconds. This
pattern repeats itself as long as the cable break is present.

Leak - The LED ashes constantly, one second on, one second off. This pattern
repeats itself as long as the leak is present.

Test the System

If the LD300 is already connected to a BMS or NMS, notify monitoring personnel
before you begin testing the system.

To verify the LD300’s functionality, test three points within the length of sensing
cable - one at the beginning, one in the middle of the length, and another near
the end of the length of cable.

There are a variety of ways to simulate a leak.

• Pour a small puddle of water on the cable while it rests on the oor.

• Dunk the cable in a cup of water.

• Wet a paper towel or rag and wrap it loosely around the cable. This is
popular if the cable is used in pipe applications. Be careful to wrap the wet
cloth loosely around the cable. Do not put pressure on the cable.

IMPORTANT - To avoid inaccurate readings, do not grip the cable with your
hand.

JP1

Leak Sensitivity

Top - Most sensitive

No Jumper - Medium sensitivity

Bottom - Least sensitive

JP2

Relay Output Conguration

Top - Supervised

Bottom - Non-supervised

Remove all simulated leak sources and return the system to its normal operating
state.

To test the cable fault alarm, remove the end-of-line terminator (EOL) from
the end of the sensing cable. This will cause a cable break, which should be
reported appropriately by the LD300. Once the cable break alarm is veried,
reapply the EOL and ensure the system returns to its normal operating state.

5VDC

Power

Input

Cable Fault

Relay Output

Leak

Relay Output

LED

Leader Cable /

Sensing Cable Input

Be sure the leader

cable is wired

into the correct

pinouts.