CTI GG-2 Manuale utente
Installation and Operation Manual
GG-2
2
-CHANNEL GAS DETECTION CONTROL PANEL
2GG-2
Warning
Use this product only in the manner described in this manual.
If the equipment is used in a manner not specied by Calibration
Technologies, the protection provided by the equipment may be impaired.
This equipment should be installed by qualied personnel.
GG-2 3
Table of Contents
For technical support, contact:
Calibration Technologies
920 N Trade Winds Pkwy
Columbia, MO 65201
phone: 866-394-5861
email: [email protected]
website: ctiengineering.com
General description ..............................4
Installation ......................................4
Locating the GG2 ...............................4
Installation guidelines .......................... 4
Wiring ........................................5
Operation .......................................7
Start-up.......................................8
Keypad .......................................8
LCD Operator Interface.......................... 8
Menu Tree ....................................9
Navigating the Menu ............................ 9
Normal operating mode ..................... 9
Channel view...............................9
Main menu ................................ 9
Alarm log ..................................9
Calibration mode ........................... 9
Last calibration date ........................10
Congmenu ..............................10
Clock.....................................11
Contrast ..................................11
Relay test .................................11
Maintenance ...................................12
Specications ...................................12
Warranty .......................................13
4GG-2
General Description Installation
The GG-2 control panel is a two-channel controller designed to accept two
4/20 mA input signals. It has a 24 VDC regulated power supply to power all
industry standard 4/20 mA gas transmitters and audible/visual devices.
The GG-2 control panel provides continuous real-time monitoring of each
sensor.
The backlit LCD display provides an at-a-glance status of gas concentrations
and alarms.
The GG-2 control panel is assembled into a wall mounted enclosure
designedfornon-classiedlocations.Thegassensors(oneortwo)are
installedatspeciclocationswheregasistobedetected,upto1,500feet
from the controller. They are electrically connected to the controller via three
conductor cables.
Theonboardrelayshave10secondon/otimedelaystoprevent
unnecessary cycling during a fault, warning or alarm condition.
All operator functions are performed from the keypad on the front of the
panel.
Locating the GG-2 Control Panel
The important consideration when installing GG-2 control panel is that it
must be easily accessible for operating personnel.
Installation Guidelines:
Mount controller on a solid surface with minimal vibration. If mounting on a
wall with studs, the mounting screws should be screwed into the studs.
Mountcontrollerthrutheholesinthemountinganges.
Mount controller in a general-purpose location only. Do not install in a
hazardous environment.
Mount controller away from electromagnetic interference.
Protect controller from physical damage.
5
GG-2
Wiring
• Electrical wiring must comply with all applicable codes.
Wiring Guidelines:
• Usestranded,copperwire/cablewithaminimumof75°Crating(167°F).
• Always use three-conductor, insulated, stranded, shielded copper cable
for all sensor cables.
• Do not pull sensor wiring with AC power cables. This can cause electrical
interference.
• Be sure to land the shield conductors of the sensor cables at the shield
terminals of the sensor connectors.
• Use only the existing conduit hole for connections to the sensor.
• Bonding between metallic conduit connections is not automatic with the
non-conductive enclosure. Separate bonding must be provided.
• During installation, cover conduit holes and close the enclosure cover to
prevent debris from falling into the equipment.
• TomaintainNEMA4X/IP66ratingoftheenclosure,conduitttingsofthe
same rating or better must be used.
AC Power Wiring:
• Power should be provided by a dedicated 15A circuit breaker. It is
recommended that the circuit breaker be located near the equipment,
and clearly marked as the disconnect for the GG-6 controller.
• 100-240 VAC, 1.3 A, 50/60 HZ
Relay Wiring:
• AC wiring must be run in separate conduit from the sensor cables.
• All relays have Form C dry contacts, and are rated 8 Amps @ 24 VDC or 10
@240VAC(drycontactsrequireexternalpower).
• Only the fault relay is normally energized. It will de-energize to the alarm
state upon sensor fault or loss of power.
• Each relay has a status LED to show the state of the relay. During normal
operation,allLEDsareoexceptforthegreenFaultLED.
Common Relay Outputs
Individual Relay Outputs
6GG-2
Sensor Wiring: 4/20 mA, 350 Ohm input impedance.
• Refer to sensor manual for cable recommendations.
• Usually20/3shieldedcable(Belden8772orequivalent).
• Length of cable should not exceed 1,500 feet.
Analog Output Wiring:
• The analog output is 4/20 mA signal for monitoring by plant PLC or other
analog input equipment. It is powered by the GG-2 Controller.
• Use 2-conductor shielded cable compatible with receiving equipment.
7
GG-2
Operation
Start-up
Beforeapplyingpower,makeanalcheckofallwiringforcontinuity,
shorts, grounds, etc. It is usually best to disconnect external alarms and
other equipment from the controller until the initial start-up procedures are
completed.
After initial power-up, allow at least 12 hours for the sensors to stabilize
before calibrating. Because sensors are normally located at a distance from
the controller, the test time required and accuracy of the response checks
will be improved if two people perform the start-up procedures and use
radio contact.
The GG-2 control panel has a two-minute power-up delay during which
the relays are held in their normal non-alarm state, after the application of
power or a momentary power loss. This allows the sensors time to stabilize
and disables the alarm functions.
Start-Up Test:
1)Onepersonexposeseachsensortotargetgas.
2)Thesecondpersonstaysatthecontrolunittodeterminethateachsensor,
when exposed to the gas, is connected to the proper input and responds,
causing appropriate alarm functions.
Keypad
All operator functions are performed from the membrane switches on the
front of the panel.
Silence Key: Pressing the Silence key will reset the horn relay and silence
the buzzer, until the next event occurs. The horn relay is triggered by a fault
or alarm condition, and can be programmed to trigger during a warning
condition.
Reset: Pressing the Reset key will attempt to reset any latched relays. Any
latched relays will not reset as long as there’s an existing warning or alarm
condition. The latch-relay function can be enabled for each relay in the
Congurationmenu.
LCD Operator Interface
Key Functions: Below is a list of the common key functions used for the LCD
operations:
MENU to enter main menu
ESC to go back to previous menu/sub-menu
ENTER tomodifytheprogrammingelds
PREV to go back to previous screen
NEXT to advance to next screen
YES/NO whenpromptedandtoacceptcongurationchanges
Alphanumeric for menu selections and to enter values and text
Up/Down tonavigatedrop-downlistsduringconguration
Ch1 Ch2
0
PPM
NH3
0.0
%
NH3
POWERUP
8GG-2
Chl CAL Mode
Alarm
Warn
ENGINE ROOM
Chl CAL Mode
Alarm
Warn
ENGINE ROOM
Chl CAL Mode
Alarm
Warn
ENGINE ROOM
Chl CAL Mode
Ch2
ENGINE ROOM
249
249 249
PPM
NH3
PPM
NH3
PPM
NH3
Menu Tree
9
GG-2
Navigating the Menu
Normal Operating Mode
After system power-up, the normal
operating screen will be displayed. It
provides at-a-glance system status,
showing real-time gas concentrations. In
this example, Channel 1 gas concentration
has exceeded the warn and alarm
setpoints. Channel 2 indicates a fault due
to faulty wiring or a sensor signal less
than 1 mA. The Warn, Alarm and Fault
indicationswillashuntiltheconditions
are cleared. PREV or NEXT to go to Channel
View screens MENU to go to main menu
screen.
Channel View
Channel view displays only the status of
the channel being viewed. It also displays
the room/zone location. Warn, Alarm
andFaultindicationswillashuntilthe
conditions are cleared. PREV or NEXT to
view normal operating screen or next
channel view screen. MENU to go to main
menu screen.
An over-range condition is indicated by
ashingofthefull-scalereading.Thisalso
indicates that the sensor output is over 20
mA.
Main Menu
The main menu can be accessed by
pressing the menu key at any time. Use
the alpha-numeric keys to select a sub-
menu, or NEXT to advance to the next
menu screen. ESC to return to the normal
operating screen.
Main Menu (cont.)
Alarm Log
The alarm log captures every event
in chronological order, with the most
recenteventdisplayedrst.10,000
events can be stored, with the oldest
events being automatically truncated,
once the alarm log is full. Time/date
stamp and event number are also
displayed. PREV or NEXT to scroll.
Hold button in for turbo-scroll. ESC
to return to normal operating screen.
MENU to return to main menu screen.
Cal Mode
Calibration mode allows for sensor
calibration and maintenance by
holding the relays in their normal
state, preventing unwanted alarms. If
the unit is left in Cal Mode, it will stay
active for 48 hours and then return
to normal operating mode. Make
sure the concentration values have
dropped below the warning and alarm
setpoints before exiting. ESC to exit
from Calibration mode and return to
normal operating mode. The analog
outputsarenotaectedbycalibration
mode and are allowed to increase to
full scale.
10 GG-2
Last CAL Date
The last cal date shows the date and time
at which the system was last calibrated.
When six months has transpired from
thelastcaldate,aCalDueagwill
appear indicating the sensors need to be
calibrated., Holding the 6 key, and then
pressing the 7 key will reset the Cal Date,
once the sensors are calibrated.
CONFIG Menu
TheCongurationmenuispassword
protected to prevent unauthorized
personnel from making programming
changes to the system. Enter the
password(last4digitsofCTItoll-free
phonenumber)withthealphanumeric
keys.
Enternumber1or2tocongurethat
channel(repeatsamestepsforboth
channels).
State:Allowsforturningonoroa
channel. For example, if a sensor is
removed from the system, that channel
should be changed to NOT ACTIVE.
Tochangethisprogrammingeld,press
ENTERtohighlighttheeld.
Use up or down arrows to select item.
Press ENTER to select item.
Range: Allows adjustment of sensor zero
andfullscalerange.(usealphanumerickeys
toentervalues)
Unit/Gas:Usetheseeldstochangetheunit
of measurement and gas type.
WarningSetpoint:Usethiseldtochange
the default warning setpoint
Direction:Usethiseldtochangethe
default direction setting. For example,
oxygen level monitoring may require
downscale alarming.
Indice
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