RLE 10K Quick Start - Manual (Page 2)

Modbus Registers
The SeaHawk 10K uses its EIA-485 port to communicate via Modbus. The SeaHawk 10K
is configured to act as a slave device on a common network and is a slave only device – it
will never initiate a communications sequence.
Read Input Registers
Front Panel Indicators
The front panel of the SeaHawk 10K contains a 4-character LED and series of colored
LEDs that are used together to convey device status and information regarding detected
leaks and cable faults. A blue button is used to cycle the 4-character LED, silence the
audible alarm, and reset the alarm.
Indicator Symbol Description
4-character
LED
System is running in its normal operating state.
A leak, fault, or contamination has been detected. A numerical distance displays on
the LED. A green LED lights next to Ft or m, and either the LED next to the water
drop glows red to indicate a leak, or the LED next to the wrench glows yellow to
indicate cable contamination. If the distance is measured in meters, a tenths place
decimal value will appear in measurements from 0.0 - 999.9. All meter values over
1000 will display as whole meter measurements.
Cable break/fault detected. Yellow LED flashes next to wrench symbol.
LED Red LED - leak is detected - distance is displayed on 4-character LED
Yellow LED - Cable fault - 4-characted LED displays cbr
Yellow LED - Cable contamination - 4-character LED displays distance
Green LED - Power on
Green LED - Measurements are made in feet
Green LED - Measurements are made in meters
Green LED - Microamps of current on cable - amperage displayed on 4-character LED
Test/Reset/
Alarm Silence
Button
Blue Push
Button
In normal operating conditions, the button functions include:
• Press once: Displays cable current in ohms/foot and the green LED lights next to
the microamp symbol
• Press twice: Displays the length of installed cable components and the green
LED lights next to the appropriate Ft or m symbol
• Press three times: Return to the default display (SH10 )
• Press and hold: Self-test is initiated and the character display reads cal 8060,
which indicates the value of the test resistor.
If an alarm sounds, briefly press the button to turn off the audible alarm. The Status
LED remains red, and the 4-character LED continues to show the alarm condition.
In an alarm condition, whether the audible alarm is sounding or not, press and hold
this button for 3 seconds to clear the alarm.
Ft
m
m A
cbr
675
(e.g.)
04
Input
Registers
(3x)
Description
30001 b0=Leak alarm, b1=cable break,
b2=contamination, b3=summary
30002 Leak distance
30003 0=meters, 1=feet
30004 Leakage current on cable (mA)
30005 Installed Cable Length (ft/dm)
30006 Cable resistance, leg 1 (ohms)
30007 Cable resistance, leg 2 (ohms)
30008 Resistance per foot (milliohms)
30009 Firmware version number
38001 Leak Distance - Meters (float)
38003 Cable Length - Meters (float)
Read Output Registers
03
Holding
Registers
(4x)
Description
40001 Leakage threshold (writeable)
Default 120 mA; range: 25mA-175mA
40002 Contamination threshold (writeable)
Default 50 mA; range: 25mA-175mA
40003 Re-alarm interval (read only, set with
DIP SW1)
Default: 0 (disabled); 0=disabled, 4
hours
40004 Latching alarms (read only, set with
DIP SW1)
Default: 0 (disabled); 0=disabled,
1=enabled
40005 Silence audible alarm
Default: 0 (disabled); 0=disabled,
1=enabled
40006 Reset alarm
Default: 0 (no reset); 0=do not reset,
1=reset alarm
SH10
03
Holding
Registers
(4x)
Description
40007 Sample size (writeable)
Default: 12; range 4-25; 0 sets to
default
40008 Resistance per foot in mΩ
Set to 2000-3500 or 3500-4240
40009 AC rejection mode (needed only if the
10K is AC-powered)
Default: 1 (50Hz); 0 = 60Hz, 1 = 50Hz
40010 -
40015
Not used - reads 0
40016 Leak alarm delay (writeable)
Default: 10 seconds; range: 5-999
seconds
40017 Contamination alarm delay (writeable)
Default 120 seconds; range 5-999
seconds