ARJAY ENGINEERING 2880R-LT Manuale utente
MODELS:
2880R-LT / 2880RW-LT
2881R-LT / 2881RW-LT
2882R-LT / 2882RW-LT
REMOTE MOUNTED
LEVEL MONITOR
USER MANUAL (REV: 1.0)
ARJAY ENGINEERINGLTD.
2881R Brighton Road
Oakville (Toronto), Canada
L6H 6C9
TEL: ++1 (905) 829-2418
FAX: ++1 (905) 829-4701
NORTH AMERICA: 1-800-387-9487
WEBSITE: www.arjayeng.com
EMAIL: arjay@arjayeng.com
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2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 3 | 28
TABLE OF CONTENT
NOTICE Please read the Installation Notes (4.0) prior to locating and mounting
the instrument.
1.0 SPECIFICATION .................................................................................................... 4
2.0 USE HAZARD INFORMATION............................................................................... 7
3.0 INSTRUMENT OVERVIEW..................................................................................... 8
3.1 Features ............................................................................................................................... 9
3.2 Model Number Table ............................................................................................................ 9
4.0 INSTALLATION.................................................................................................... 10
4.1 Probe Mounted Controller Installation ................................................................................ 10
4.2 Probe Installation ................................................................................................................ 11
5.0 CONTROLLER OVERVIEW................................................................................. 13
5.1 Input / Output Terminal Specification ................................................................................. 14
5.2 Permanent Power Connection (AC Powered Models Only) ............................................... 15
5.3 Glossary Of Symbols .......................................................................................................... 1 5
6.0 STARTUP AND CALIBRATION ........................................................................... 16
6.1 Startup ................................................................................................................................ 16
6.2 Menu Flow Chart Back Chart Background Information ...................................................... 16
6.2.1 Menu Short Form ................................................................................................................ 16
6.2.2 Menu Description ................................................................................................................ 17
6.2.3 Data Entry ........................................................................................................................... 17
6.3 288XR Controller Setup ...................................................................................................... 17
6.3.1 Setup And Network ............................................................................................................. 17
6.3.2 Relay Setup Menu .............................................................................................................. 18
6.4 288XR Controller Calibration .............................................................................................. 20
6.4.1 Auto Calibration .................................................................................................................. 20
6.4.2 Manual Calibration .............................................................................................................. 20
7.0 CONTROLLER NETWORK.................................................................................. 21
7.1 MODBUS Configuration ..................................................................................................... 21
7.2 2800 Series MODBUS Register Mapping .......................................................................... 22
8.0 MAINTENANCE.................................................................................................... 23
9.0 TROUBLESHOOTING.......................................................................................... 24
10.0 FLOW CHARTS.................................................................................................... 26
TABLE OF FIGURES
FIGURE 1 – TYPICAL INSTALLATION.............................................................................. 8
FIGURE 2 – PROBE INSTALLATION............................................................................... 12
FIGURE 3 – CONTROLLER OVERVIEW.......................................................................... 13
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 4 | 28
1.0 SPECIFICATION
Specifications are subject to change without notice
Specification Details
Power Input:
(Specify voltage at time of
Order)
12VDC +15% /-10% or 24VDC +15% /-10%, 250mA maximum
100VAC – 240VAC +/- 10%, 50/60 Hz, 150mA maximum
Note: DC input models must be supplied by Limited Energy power source. Limited
Energy means compliance with one of the following requirements:
- Class 2 circuit according to Canadian Electrical Code, Part, I, C22.1;
- Class 2 circuit according to National Electrical Code, NFPA-70;
- Limited Power Supply (LPS) according to IEC 60950-1;
- Limited-energy circuit according to IEC 61010-1.
Connections to mains supply Permanent (for AC/DC model)
User Interface:
Display & Keypad Two line LCD display, Alarm status LEDs and Keypad for select
menu or enter values
Communication Interface: Modbus (RS485)
Relays / Analog Outputs:
Relay Outputs 2 SPDT relays, Dry Contacts are 3A @ 250 VAC (Resistive),
selectable failsafe or non-failsafe, selectable high or low acting alarm,
programmable time delay: 0 – 600 seconds , 0-100% differential
(2881R Or 2881RW: Isolated)**
mA Signal Output 4-20 mA, 900 Ohms max (24VDC Power) OR 450 Ohms max
(12VDC Power).
** Optional (Note: If Isolation is ordered then relays are not available)
Instrument Performance:
Measuring Range 0 - 5000 pF (Most applications are 100pF to 1000pF)
Accuracy 0.2% of full scale pF
Resolution 0.004% at 1000pF
Calibration Linear 2 point Auto calibration or Manual calibration
Environmental:
Operating conditions Continuous
Ambient Temperature -20 °C to +55 °C controller
-40 °C to +55 °C PMC2800 pulse card in probe junction box
Process Temperature -60 °C to +200 °C Standard or Heavy Duty Teflon Probe
-60 °C to +100 °C Flexible Tefzel Probe
Maximum Process Pressure 1500 PSI / 10342 kPa
Relative humidity 0 to 95% (non-condensing)
Altitude ≤2000 m
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 5 | 28
Specification Details
Installation Category II
Pollution Degree 2
Equipment mobility Fixed
Mechanical Specification: Refer to Dimensional Drawing
Protection Degree –
Controller & Probe Junction Box
IP65
2800 Series Controller And
Remote Level Probe
Certification
(Hazardous Locations)
North America • CSA file number: 56812
• Class – 2258-02 – Process control equipment for Hazardous
Locations
• Class – 2258-82 – Process control equipment for Hazardous
Locations – Certified to US Standards
• Ex db IIC T5 Gb
• Class I, Zone 1, AEx db IIC T5 Gb
International IECEx/ATEX • II 2G Ex db IIC T5 Gb
• Sira 17ATEX1303X
• IECEx CSA 17.0034X
SPECIFIC CONDITIONS OF USE FOR HAZARDOUS LOCATION
(denoted by X after the certificate number)
1. Process temperature for the standard and heavy duty probes are -60°C to +200°C and for
flexible probe is -60°C to +100°C. It is end-user’s responsibility to ensure that the ambient
around the Capacitance Controller and ARJAY Probe does not exceed the permitted ambient of
+55°C.
2. The maximum process pressure is 1500psi/ 10342KPa.
3. Only approved certified entry devices shall be used.
4. Flameproof joints are not permitted to be repaired in the field. If the flamepath is damaged, the
enclosure is to be removed from service and replaced with a new enclosure.
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 6 | 28
Model: 28aaa-bbb-c-defg
Where:
aaa bbb c d
80R LT 1 = 100-240VAC, 50/60Hz 6 = Explosion Proof Without Window, North America
81R LS 2 = N/A 7 = Explosion Proof Without Window, ATEX, IECEx, North America
82R OWS 3 = 12 VDC 8 = Explosion Proof With Window, ATEX, IECEx, North America
80RW OWI 4 = 24 VDC
81RW CAP
82RW FCM
FCS
IFA
W = Window Option
2880R, 2881R, 2880RW & 2881RW available for these models only.
*
*
*
*
*
*
*
*
*
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 7 | 28
2.0 USE HAZARD INFORMATION
CAUTION Indicates a potentially hazardous situation that may result in minor or
moderate injury.
WARNING Indicates a potentially or imminently hazardous situation which, if not
avoided, could result in death or serious injury.
DANGER Indicates a potentially or imminently hazardous situation which, if not
avoided, will result in death or serious injury.
NOTICE Indicates a situation which, if not avoided, may cause damage to the
instrument. Information that requires special emphasis.
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 8 | 28
3.0 INSTRUMENT OVERVIEW
The Arjay Model 2880R-LT, 2881R-LT & 2882R-LT Level Monitor provides a proportional analog
output. The 2882R-LT includes two independent alarm relays for monitoring and control of liquids or
solids in a tank or vessel. The Model 2881R-LT provides a single isolated analog output without
relays. The designations 2882R & 2881R will be used interchangeably throughout this manual with
288XR.
The Arjay system has an active capacitance probe that is inserted into the vessel. As the material
level changes around the probe, the capacitance reading of the probe increases or decreases. The
controller output and relays are calibrated at user determined levels of product on the probe.
The remote mounted Arjay 288XR controller monitors the capacitance change of the probe and
activates the relay contacts for use with alarms, pumps, valves, etc. The analog output and RS-485
Modbus communication are available for control interface.
The complete 288XR-LT Series system consists of the probe, the PMC card and 288XR controller.
The standard probe is constructed of a Teflon coated probe. The probe length is customer specified
for the tank and depth of material to be measured. Probes can be inserted vertically or angled into
the tank. The importance is that the probe must be parallel to the tank wall when inserted for best
linearity. A concentric shielded probe is available as an option to improve linearity and achieve a
parallel ground reference. The PMC card is mounted in a junction box at the top of the probe. The
PMC card translates the capacitance signal from the probe into a frequency pulse, which can be
transmitted up to one kilometer to the 288XR controller via 2-wire shielded cable. Certified
hazardous location conduit and fittings is required between controller and probe.
Calibration requires a known change of level in the vessel to provide two calibration points. The
Arjay processor will automatically extrapolate to determine the 0 to 100% span.
The two relays (Model 2882R-LT only) can alarm at different levels and are entered as a % value
through the keypad and display. Each relay also has a differential setpoint to allow the relay to
activate at one level and de-activate at a different level. This is similar to a latching format which
can cycle a pump or level between two points through the use of only one relay.
Figure 1 – Typical Installation
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 9 | 28
3.1 Features
• Microprocessor based RF capacitance level transmitter
• Two Differential Alarm relays (SPDT, 3A @ 250VAC) - Model 2882R-LT only
• 0-20mA or 4-20mA field selectable output
• Modbus protocol via RS-485 for access by Arjay handheld, Central Access Panel or compatible
system
• Local 2 point Auto or Manual calibration or remote calibration via network
• User specified custom features may be added by contacting Arjay Engineering Ltd.
3.2 Model Number Table
MODEL DESCRIPTION
2880R-LT REMOTE MOUNTED 4-20mA (NON-ISOLATED)
2880RW-LT REMOTE MOUNTED 4-20mA (NON-ISOLATED) - WINDOW MOUNT
2881R-LT REMOTE PROBE MOUNTED 4-20mA (ISOLATED)
2881RW-LT REMOTE MOUNTED 4-20mA (ISOLATED) - WINDOW MOUNT
2882R-LT REMOTE MOUNTED 4-20mA (NON-ISOLATED) C/W RELAYS
2882RW-LT REMOTE MOUNTED 4-20mA (NON-ISOLATED) C/W RELAYS - WINDOW MOUNT
*The designation 2880R, 2881R & 2882R will be interchangeable with 288XR
throughout this manual.
2880R-LT, 2881R-LT, 2882R-LT Revision 1.0 Page 10 | 28
4.0 INSTALLATION
NOTICE If any damage to the instrument is found, please notify an Arjay
Engineering representative as soon as possible prior to installation.
NOTICE Qualified Personnel must undertake all installations.
WARNING EXPLOSION HAZARD – DO NOT OPEN PROBE JUNCTION BOX
WHEN ENERGIZED.
WARNING DO NOT OPEN WHEN EXPLOSIVE ATMOSPHERE IS PRESENT
WARNING If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
4.1 Remote Mounted Controller Installation
Choose the mounting location in accordance with good instrument practice. Extremes of ambient
temperature and vibration should be avoided (see specifications and installation drawing).
The 288XR controller may be mounted up to one kilometer from the PMC card using a minimum 18
gauge, 2-wire SHIELDED cable (Belden 8760 or Equivalent). Certified hazardous location conduit
and fittings is required between controller and probe.
Check the polarity of the + and - wiring between the controller and the PMC prior to powering on the
unit; + to + and - to - to avoid damage. Shield of cable should be connected to secondary ground
terminal marked as (at controller side only). Incoming Earth ground should be connected to
primary ground terminal marked on sub plate.
NOTICE
The controller operates in a Failsafe Mode (factory default)
This means that the relays are in an energized state during normal operation.
The N.O. relay contact will be held closed and the N.C. relay contact will be
held open during a normal condition. This will allow the relay to return to its
non-energized (shelf) state during an alarm, fault or power failure condition.
Wire accordingly.
NOTICE Maximum Conduit size for installation size is ¾” FNPT.
NOTICE To ensure proper operation and electrical safety, make sure the 288XR
enclosure and the PMC junction box are electrically grounded.
CAUTION
The Internal ground screw provided in this enclosure must be used for
equipment grounding connection.
The External ground screw is provided for use only as a supplemental
connection where required (or, permitted) by local codes or authorities.
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