Raptor GFM600 User manual

GFM600 Quick Start Guide
hank you for purchasing the Raptor Ground Fault Monitor (GFM600-2).
This guide describes how to install the GFM600-2.
The Ground Fault Monitor keeps track of a battery’s plus and minus bus
in relationship to the potential for approaching a grounded condition.
Through its local annunciation and relay interface, the GFM600-2 provides the
necessary signals to keep users informed about the condition of the battery bus
relative to chassis ground.
If you need further assistance, contact RLE Technologies on our website at
http://www.rletech.com/ (go to the Support Link) or by calling 970.484.6510,
Option 2.
1Pre-Installation
1Connect the ground fault circuit to a floating battery for proper operation.
IMPORTANT If the battery is not floating by design, contact the manufacturer for
assistance.
2Test the battery bus to ensure that a ground fault does not already exist. To
perform this test:
aUse a voltmeter to determine the voltage potential between the (+)
terminal and the frame. Perform the same procedure between the (–)
terminal and the frame.
bIf no voltage is present, proceed with installation.
cIf voltage is present, a ground fault exists. Correct the problem before
continuing with the installation.
2Installation
1Mount the GFM600-2 in the top of the battery cabinet, to the side of the
battery disconnect switch, or in any other convenient location, in close
proximity to the battery bus terminals.
Note: The GFM600-2 is designed for vertical mount only.
2Connect the 120VAC power supply to the terminal block marked 120VAC
line, Ground, and 120 Neutral. Torque to 8 lbs (3.62 kg).
3Connect the battery plus bus to the terminal marked Bat+. Connect the
battery minus bus to the terminal marked Bat–. Torque the (+) and (–) bus
wires to 20 lbs (9.07 kg).
4Connect relay outputs to remote monitoring system (see descriptions that
follow). Torque to 8 lbs (3.62 kg).
Note: The terminals connecting the battery bus to the fuse box have a “knife-
blade disconnect” that allows the battery bus to be disconnected from the
GFM600-2 to allow servicing of the GFM600-2. Before servicing, 120VAC
power input must also be disconnected from the GFM600-2.
3Alarm Threshold Adjustment
The GFM600-2’s ground fault current potential alarm threshold can be adjusted
to user-defined limits. The thresholds can be set from 1K ohm resistance to 99K
ohms of resistance. A battery bus in optimal condition with no leakage current to
ground will have high resistance, a battery with leakage current to ground will
have low resistance. Although the factory sets the alarm threshold at 99K ohms,
it is recommended that this alarm threshold be set by the user based on the
specific application.
To adjust the alarm threshold:
1Locate the two rotary switches on the top of the PC board, which is mounted
on the inside of the front panel.
The position of the left rotary switch indicates the “tens” units of resistance.
The right rotary switch indicates the “ones” units of resistance.
2Rotate each switch to the desired setting.
Example:
If the desired alarm limit is 87K ohms, set the left switch to “8,” and the right
switch to “7.” When the alarm threshold is set to 87K ohms and the
resistance falls below 87K ohms (the potential for ground fault leakage
current increases), the GFM600-2 enters an alarm state.
480 VDC Battery Bus: System alarms at 87K ohms
480 VDC/87,000 ohms = 0.0055A = 5.5 mA,
(which is the potential ground fault current)
4Front Panel Display
.
T
Power LED Illuminates when 115/230 VAC is connected, and
the power switch is in the “on” position.
Ground Fault LED Illuminates when the preset ground potential alarm
limit is exceeded.
Status LED Illuminates when the GFM600-2 system is okay or
not in alarm.
DC Fail LED Illuminates when the battery wires are discon-
nected. Will flash when the + and – wires are
installed incorrectly (reversed).
Alarm Silence Switch Disables the audible alert when in the “up” position.
Alarm Silence LED Illuminates when the audible alarm is disabled.
Reset Button Resets the GFM600-2. If the reset button is
depressed while a ground fault condition still exists,
the GFM600-2 will still remain in alarm. If a ground
fault condition occurs, and then stops, the
GFM600-2 will remain in alarm until the reset but-
ton is depressed (the GFM600-2 uses a latching
circuit).

©2011 RLE Technologies. All rights reserved. RLE is a registered trademark, and
SeaHawk, Falcon, and Raptor are trademarks of RLE Technologies. All other trademarks
or registered trademarks are the property of their respective companies. Although the
information contained in this document is believed to be accurate and correct, RLE
Technologies assumes no responsibility, and disclaims all liability, for any damages
resulting from the use of this information or any error or omission in this document. RLE
Technologies does not warrant, guarantee, or make any representations as to the
performance, fitness for use, safety, or reliability of any existing or future wiring,
equipment, additions or modifications to equipment, or any other component of the original
or modified system. Specifications are subject to change without notice.
Part number 120049 Rev. 5.2 1/2011
104 Racquette Drive
Fort Collins, CO 80524
970.484.6510
www.rletech.com
5Relay Outputs
Note: These relays are “picked” relays; they are energized under normal
operating conditions.
Note: All three positions must be open to disconnect high voltage.
6Ground Fault Test
1Rotate the two rotary switches to a setting of 00.
2Verify that the Ground Fault LED is on, the audible alarm is on, the Status
LED is off, and the Status and Ground Fault relay contacts have been
transferred.
3Return the two rotary switches to their original settings.
Note: The Reset switch must be pressed each time the system alarms to restore
it to normal operation.
Status Relay output is a Form C Relay (NO/NC). The state
of this relay changes when an internal fault is
detected, or power is removed from the GFM600-2.
Ground Fault Relay output is a Form C Relay (NO/NC). This
relay will change state upon ground fault alarm.
The GFM600-2 has two ground fault relay outputs.
Relay Output Terminal Blocks
(Duplicate) Ground
Fault Relay
Status Relay Ground Fault Relay
Inside the Front Cover
Battery Bus Disconnect Terminal
Open position,
Insert screwdriver
here and lift
Bat –
Bat +
Closed
position
Chassis ground
WARNING
Please use caution. High voltage is used in the
GFM600-2. A dedicated circuit breaker must be provided
in the building within close proximity to the GFM600-2
and be clearly marked as the disconnecting device for
the GFM600-2. Use copper wire with an insulation rating
of 600V only.