ARJAY ENGINEERING 2880-FCM User manual

MODELS:
2880-FCM / 2880W-FCM
2881-FCM / 2881W-FCM
2882-FCM / 2882W-FCM
PROBE MOUNTED
FOAM
LEVEL TRANSMITTER
USER MANUAL (REV:
1
.
0
)
ARJAY ENGINEERING
2851 Brighton Road
Oakville (Toronto), Canada
L6H 6C9
TEL: ++1 [phone]
FAX: ++1 [phone]
NORTH AMERICA: 1-800-387-9487
WEBSITE: www.arjayeng.com
EMAIL: [e-mail]

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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 ....................................................................................................... 15
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 288X Controller Setup ...................................................................................................... 17
6.3.1 Setup And Network .......................................................................................................... 17
6.3.2 Relay Setup Menu ........................................................................................................... 18
6.4 288X 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 .................................................................................................... 25
TABLE OF FIGURES
FIGURE 1 – TYPICAL INSTALLATION .............................................................................. 8
FIGURE 2 – PROBE INSTALLATION ............................................................................... 12
FIGURE 3 – CONTROLLER OVERVIEW .......................................................................... 13

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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
(2881: 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
Accuracy 0.2%
Resolution 0.05% of setpoint via network display
0.002% of Full Scale capacitance via network display
Calibration Linear 2 point Auto calibration or Manual calibration
Environmental:
Operating conditions Continuous
Ambient Temperature -20 °C to +55 °C controller
Process Temperature -60 °C to +200 °C Standard or Heavy Duty 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

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Specification
Details
Installation Category II
Pollution Degree 2
Equipment mobility Fixed
Mechanical Specification: Refer to Dimensional Drawing
Enclosure Protection Degree IP65, Die-Cast Aluminum Junction, Painted (Blue)
NEMA 4X, Die-Cast Aluminum Junction, Painted (Grey)
2880 Series Controller With
Level Probe Certification
Ordinary Locations:  UL file number: E343390
 UL / IEC 61010-1, 2nd Edition, 2008/10/28 (Electrical Equipment
for Measurement, Control, and Laboratory Use; Part 1: General
Requirements)
 CAN/CSA-22.2 No. 61010-1, 2nd Edition, 2008/10/01, (Electrical
Equipment for Measurement, Control, and Laboratory Use; Part
1: General Requirements)
 CE: UL / IEC 61010-1; IEC / EN 61000-4; ISO 9001:2008
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
* For ATEX / IECEx / CSA / UL and EU Declaration of Conformity certificates
refer to www.arjayeng.com

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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.
Model: 28aaa-bbb-c -d
Model: 28aaaW-bbb-c -d
Where:
aaa bbb c
d
80 LT 1 = 100-240VAC, 50/60Hz
4 = Ordinary Location Without Window, North America
81 LS 2 = N/A 5 = Ordinary Location With Window, North America
82 OWS 3 = 12 VDC 6 = Explosion Proof Without Window, North America
80W OWI 4 = 24 VDC 7 = Explosion Proof Without Window, ATEX, IECEx, North America
81W CAP 8 = Explosion Proof With Window, ATEX, IECEx, North America
82W FCM
FCS
IFA
W = Window Option
2880, 2881, 2880W & 2881W available for these models only.
*
*
*
*
*
*
*
*
*

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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.

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3.0 INSTRUMENT OVERVIEW
The Arjay Model 2880-FCM, 2881-FCM & 2882-FCM Level Transmitter provides a proportional
analog output. The 2882-FCM includes two independent alarm relays for monitoring and control of
foam in a tank or vessel. The Model 2881-FCM provides a single isolated analog output without
relays. The designations 2880, 2881 & 2882 will be used interchangeably throughout this manual
with 288X.
The Arjay system has an active capacitance probe that is inserted into the vessel. As the foam 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 probe mounted Arjay 288X 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 288X-FCM Series Foam Level Transmitter system consists of the transmitter
enclosure integrally mounted with a capacitance probe. 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.
Calibration requires a known change of foam 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 2882-FCM 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

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3.1 Features
 Microprocessor based RF capacitance transmitter
 Two Differential Alarm relays (SPDT, 3A @ 250VAC) - Model 2882-FCM 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
2880-FCM PROBE MOUNTED 4-20mA (NON-ISOLATED)
2880W-FCM PROBE MOUNTED 4-20mA (NON-ISOLATED) - WINDOW MOUNT
2881-FCM PROBE MOUNTED 4-20mA (ISOLATED)
2881W-FCM PROBE MOUNTED 4-20mA (ISOLATED) - WINDOW MOUNT
2882-FCM PROBE MOUNTED 4-20mA (NON-ISOLATED) C/W RELAYS
2882W-FCM PROBE MOUNTED 4-20mA (NON-ISOLATED) C/W RELAYS - WINDOW
MOUNT
* The designation 2880, 2881 & 2882 will be interchangeable with 288X throughout this manual.

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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 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 Probe 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).
Due to static buildup during shipment the probe is left disconnected from the electronics. Make sure
probe connector is installed in to TB6 as per figure 3.
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.
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.