Contrec 214D Field Mounted Batch Controller Instruction Manual
- June 9, 2024
- Contrec
Table of Contents
214D Field Mounted Batch Controller
FIELD MOUNTED BATCH CONTROLLER
MODEL 214D
214D-M-V7
June 2022
CONTENTS
Saey Noce
1
1. Introduction
2
1.1 Model Number Designation
4
1.2 Intrinsic Safety Approvals
5
2. Specification
7
3. Operaon
9
3.1 Front Panel Operaon
9
3.2 Test Mode
11
3.3 Batch Operaons
12
3.3.1 Control Outputs
12
3.3.2 Signal Timeout
13
4. Programming
14
4.1 Program Steps
15
4.2 Example
16
5. Valve Control and DC Power
17
6. Battery Backup Version
19
7. Flowmeter Input
20
8. Intrinsic Safety Connections
25
8.1 Coils
25
8.2 Simple Apparatus
26
8.3 Namur Proximity Switches
26
8.4 Relay Outputs
28
9. Installation
30
9.1 Wiring
30
9.2 Maintenance
30
9.3 General
30
9.4 Wall Mounng
31
9.5 Panel Mount Version
32
9.6 The Main Electronics
35
9.7 Grounding
35
9.9 Dimensions
36
9.10 Terminal Designaons
37
9. Instrument Disposal
38
Index
39
Safety 1
SAFETY NOTICES
Only competent persons with the applicable training and authorisaon should
work in potenally explosive atmospheres. When this instrument is used in
hazardous area, all wiring must be energy limited according to the documentaon
provided and the marking label aached to the instrument. The safety of any
system that incorporates Contrec 200 series instruments is the sole
responsibility of the system assembler/installer. This manual must have been
fully read and understood before the installaon and commissioning of any
system using this instrument. The instrument should only be operated if
installed and maintained correctly To ensure correct and safe operaon of this
instrument aer installaon and maintenance the instrument should be fully
sealed via the front screws and gland entries.
SPECIAL CONDITIONS FOR SAFE USE To comply with this products ATEX/IECEx/CSA
cerficaon the special condions for safe use must be followed. The Instrument
type 214Di shall be mounted in an area where electrostac charge/discharge will
be avoided.
Introduction 2
1. INTRODUCTION
The Model 214Di Batch Controller is a microprocessor based instrument which
accepts a frequency or pulse input from a wide range of flowmeters and
automatically controls the batching of fluids via a one stage or two stage
control valves. The instrument displays the Preset value, a Resettable Batch
Total and an accumulated Total directly in engineering units. The Batch
Controller is intrinsically safe and can be used in hazardous areas provided
it is connected as directed to approved flowmeters and control solenoids. The
Model 214Di is fully programmable from the front panel; the user can program
scaling factors, decimal point positions, valve delays and signal timeouts.
The instrument is compable with a wide range of flowmeters. Links on the input
board enable the circuit to be configured for millivolt signals, reed
switches, Namur proximity switches and most other signal types. The instrument
is housed in an attracve polycarbonate enclosure which is completely waterght.
A universal bracket is supplied as standard for wall mounng while oponal pipe
or panel mounting brackets are also available. The Model 214D is an upgraded
version of the Contrec Model 214. The following improvements have been made in
the Model 214D:
The voltage drop across the solenoid outputs in the 214D is only 0.8 V olts.
The voltage supply for the DC input can go as low as 9 Volts. The 214D has an
overall lower current consumpon than the
previous model with an improved battery life – the battery life in the new
model is typically 5 years regardless of the me the unit spends in totalising
or batching modes. The millivolt input can accept signals as low as 15mV P-P.
The 214D has a wide frequency range – 0Hz to 10kHz.
3 Introduction
The Model 214Di Rate Totaliser conforms to the EMC-Direcve of the Council of European Communies 2014/30/EU, the LVD direcve 2014/35/EU and the following standards:
EN61326:2013
Electrical equipment for measurement, control and laboratory use EMC requirements : Residenal, Commercial & Light Industry Environment & Industrial Environment.
EN61010:2010
Safety requirements for electrical equipment for measurement, control, and laboratory use.
In order to comply with these standards, the wiring instrucons in Section 9.5 must be adhered to.
Introduction 4
1.1 MODEL NUMBER DESIGNATION
The Model Number of the 214Di describes the unit type, output and backup options installed and the mounng opons.
Model 214Di . 2 0 C . A
Model Intrinsically Safe Batch Controller – 214Di
0 – Standard solid state relay outputs
Type of Mounng 0 – No cable entry holes 1 – Panel mount 2 – Wall mount with cable glands 6 – 2″ galvanised pipe bracket
Enclosure Type* A – Aluminium S – Stainless Steel
Approvals C CSA USA / Canada approval M ATEX/IECEx approval
eg. Standard wall mounted Batch Controller would be Model 214Di.20M * 214D is
supplied in plasc enclosure as standard unless `A’ or ‘S’ is stated in part
number.
5 Introduction
1.2 INTRINSIC SAFETY APPROVALS
The Model 214Di is certified for use in hazardous areas and has IECEx, ATEX and CSA US/C approvals.
The Model 214Di cerficaon details are:
IECEx Approval
IECEx BVS 15.0099X
Rang
Ex ia IIB T4 Gb
ATEX Approval Rang
Ambient Temperature:
BVS 15 ATEX E 106 X II 2G Ex ia IIB T4 Gb
Ambient temperature of -20° to + 60°C.
CSA NRTL/C Approval Type:
70061366 Class 1, Groups C and D T4
When installing in hazardous areas, the instrument must be installed according to the guidelines in Secon 2 and in accordance with standards for wiring and installation in hazardous areas. Failure to do so may result in the protecon provided by the equipment becoming impaired.
When bearing the CSA mark, the instrument must be powered by a power supply unit with a limited energy electric circuit in accordance with CAN/CSA C22.2 No. 61010-1-12 and ANSI/UL 61010-1, or Class 2 as defined in the Canadian Electrical Code C22.1, Secon 16-200 and/or Naonal Electrical Code (NFPA 70), arcle 725.121.
DC Power
The input can be connected to IS circuits with the following maximum values:
Ui = 28V Ii = 93mA Pi = 653mW
The internal capacitance and inductance seen on these terminals is 0.1uF and
0mH.
Introduction 6
Relay Outputs
The outputs can be connected to IS circuits with the following maximum values:
Ui = 28V Ii = 93mA Pi = 653mW
The internal capacitance and inductance seen on these terminals is 0.1uF and
0mH.
Flowmeter Input
Enty parameters on the flowmeter enable connection to a wide range of approved
sensors.
Input parameters are:
Ui = 24V Ii = 20mA Pi = 320mW
The internal capacitance and inductance seen on these terminals is 0.02uF and
0mH.
Output parameters are:
Uo = 10.0V (open circuit) Io = 9.0mA (short circuit) Po = 23mW
Maximum allowed external capacitance is 20µF. Maximum allowed external
inductance is 1.5H.
7 Specification
2. SPECIFICATION
General
Display: Batch Total: Accumulated Total:
Preset: K-factor:
Decimal Points: Frequency Range: Signal Type:
DC Power Input:
LCD which is connuously powered. 7 digits with 10mm (0.4″) high digits. Displayed when the ACCUM TOTAL buon is pressed. 5 digits with 8.5mm (0.33″) high digits. The pulses per unit of measure (e.g. pulses/gallon) is programmable in the range 0.0001 to 999,999. Decimal point posion is fully programmable for the total and preset. 0Hz to 10kHz. Link seable for sinewave (15mV P-P minimum), open collector, reed switch, pulse or Namur proximity switch. 9-28 Volt at 4mA maximum.
Baery Backup
Type: Baery Life:
Two lithium baery packs. 5 years typical.
Outputs
Outputs:
Switching Power: Supply Backup: Isolation:
Two solid state relay outputs suitable for driving DC solenoids or external relays. 200mA. 30VDC maximum. Lithium baery. Both outputs are separately isolated via opto-isolators.
Specification 8
Physical
Temperature: Dimensions:
Protection: Cable Entry: Material:
Operang temperature: -20°C to 60°C. 98mm (3.9″) high x 151mm (5.9″) wide x 43mm (1.7″) deep (cable glands not included). Sealed to Nema 4X or IP67 standards. By cable glands. Polycarbonate, Stainless Steel, Aluminium.
Wall Mounng:
Universal mounng bracket supplied as standard.
Pipe Mounng:
A galvanised metal bracket is available which enables the Model 214Di to be attached to a 2″ vercal or horizontal pipe.
Turbine Meter Adaptor:
An oponal mounng stem is available for mounng the Model 214Di directly on turbine flowmeters which have a 1″ NPT boss or 1″ BSP boss.
Panel Mounng:
Supplied with mounting brackets. Terminals accessible from rear. The panel mount version is not waterght.
Cutout:
141mm (5.6″) wide x 87mm (3.5″ high).
Max Weight:
Stainless Steel – 2220g, Aluminium 900g, Polycarbonate – 400g
Addional Polluon Degree: Over Voltage Category: Maximum Altude:
2 II 2000m Above Sea Level
9 Operaon
3. OPERATION
The Model 214Di Batch Controller accepts a frequency or pulse input from a
wide range of flowmeters. The instrument is fully programmable with all
operang parameters and calculaon constants programmable from the front panel.
The setup parameters are stored in a non-volatile memory and are retained for
at least 10 years in the event of a power loss.
3.1 FRONT PANEL OPERATION Three keys on the front of the instrument provide an
easy and straight forward method to set up batches and control operaons. The
three keys each have dual funcons as described below:
RUN
STOP
ACCUM TOTAL PRESET
Front Panel Keys
SETTING THE PRESET QUANTITY
The Batch quanty is programmed as follows:
Switch Acon
Display Comments
Press PRESET
The Accumulated Total together with the Preset quanty is displayed.
“1” 2345 The most significant digit of the Preset quanty flashes indicating that it can be changed.
Press
“2” 2345 Pressing the < key will increment the digit. (The up arrow on the Stop key indicates to increment the digit.)
Operaon 10
Switch Acon
Display Comments
Press
2 “2” 345 Pressing the key will change digit and
enables the next digit to be incremented. (The right arrow on the RUN key
indicates to change digit.)
Press PRESET
22345
Pressing PRESET returns the instrument to the Run mode and batches can now be run.
Note: If there are no keys pressed within 10 seconds while the instrument is in preset mode it will return to the run mode saving the current value as the preset quanty.
Upon exit of preset mode the value is checked against the programmable batch limit. If the value is greater than the batch limit the preset value is set to the programmed limit. This check is disabled if the batch limit is programmed as zero.
Once programmed, the Preset quantity will be retained in memory and will not alter unl changed by the user. The Preset quanty can only be set while the instrument is in a non-operaonal state such as when the batch is complete, or has been cancelled.
STARTING A BATCH To start a batch press the RUN key. The Total will then reset to zero and, provided there is flow, the Total display will start counting upwards. The batcher has two output transistors and these are switched on and off as described in secon 3.3.
STOPPING The process can be stopped at any me by pressing the STOP switch. This is indicated by the “Pause” message being displayed on the screen. Once the process has been interrupted in this way, it can be continued by pressing the RUN key or the process can be aborted by pressing the STOP switch a second me.
11 Operaon
ACCUMULATED TOTAL During a batch run, the Accumulated Total can be displayed
by pressing the ACCUM TOTAL key. In the non-operational state (i.e. when the
batch is complete), the ACCUM TOTAL key also funcons as the PRESET key and
enables the Preset quanty to be changed. The Accumulated Total cannot normally
be reset, except by pressing the internal Reset buon (see section 9.4).
3.2 TEST MODE
The 214Di has a Test Mode which can be entered and exited by pressing and holding the front panel keys in certain sequences to avoid accidental entry or falsely starng a batch. To enter Test Mode, the front panel keys should be pressed and held in the following order: the STOP key and then the ACCUM TOTAL key.
Note the test mode cannot be entered while the instrument is in program mode or preset mode.
The tests are as follows:
Relay 1 Test
By pressing the RUN key, the display will show the test for Relay 1. The output will only activate while the RUN key is being pressed.
Relay 2 Test
By pressing the STOP key, the display will show the test for Relay 2. The output will only activate while the STOP key is being pressed.
Display Test
By pressing the PROGRAM key, all segments of the display will flash.
Note the relay outputs are only operated when external DC power is present. And any batch in progress when test mode is entered is stopped and cannot be resumed.
To exit Test Mode, the front panel keys should be pressed and held in the following order: the ACCUM TOTAL key and then the STOP key.
Operaon 12
3.3 BATCH OPERATIONS
The operation of the Batch Controller is shown below:
PAUSE
Batch
Quantity
Run
Stop Run
Reached
Run
Output 1 Output 2
“on” state “on” state
Start Time
Prestop Quantity
Two Stage Valve Control
3.3.1 Control Outputs The two solid state relay outputs can be set up to
control a single valve or a dual valve with slow stop and/or slow start.
Alternavely, the second output can be used to control a pump. The output
operaon is shown above. A me delay between the Start and the me when Output 2
switches on can be programmed to provide a so startup. The delay can range
from 0 (no delay) to 9 seconds. A Prestop quantity (i.e. the quanty to the end
of the batch) can also be programmed to provide a slowdown of flow at the end
of the batch, thereby enabling precise quanties to be batched.
13 Operaon
The process can be stopped at any time by pressing the STOP key, whereby both
outputs will immediately switch off. The process can then be aborted and the
batcher reset by pressing the STOP key again, or the process connued by
pressing the RUN key. If the process is continued and the instrument was
previously in the slow start or main control phases (i.e. not the prestop
phase), the mer will be reset and a slow start will occur with a full me delay
to ensure a correct start up. The totals will not be reset and the batch
quanty will remain unchanged.
3.3.2 Signal Timeout The Signal Timeout period defines a time interval which
is used to detect if the low has stopped. If there is no signal input for a
time greater than the Signal Timeout period, the flow is deemed to have
stopped. A Signal Timeout period detects the loss of signal midway through a
batch when the outputs are on. In this case, the Batcher will enter a Flow
Alarm condition and switch off the outputs. The Flow Alarm condion is
maintained unl acknowledged by pressing the STOP switch. The alarm condion is
also signalled to the operator by the PAUSE message being flashed on the
display. The instrument enables the user to program a me interval of up to 99
seconds to detect an absence of signal input. If the Signal Timeout is set to
0, this function is disabled.
Programming 14
4. PROGRAMMING
The Model 214Di is fully programmable, with all parameters being stored in
memory. The Program Mode can be entered in one of two ways:
1. Plasc Enclosure – By removing the lower plasc cover strip (ie. the dark
grey strip along the boom of the enclosure) and replacing it the wrong side
up. This brings a small magnet on the inside of the cover strip in contact
with a reed switch inside the instrument. Metallic Enclosure – By removing the
metallic cover strip below the buons. Unscrew the strip and replace the wrong
side up. This brings a small magnet on the inside of the cover strip in
contact with a reed switch inside the instrument.
2. By removing the front secon of the enclosure which contains the main
processor board and batteries. Once removed, the PRESET key is pressed to
enter the Program Mode.
The PRESET switch is used to step through the program (CAL sequence) and the
and keys on the front panel are used to change and increment the flashing
digits. Six CAL steps are accessible in the Calibraon mode. The CAL number is
displayed on the lower display and the parameter is displayed on the upper
display. Any batch in progress when the Program mode is entered, is stopped
and cannot be resumed. Also, no incoming pulses are totalised while the unit
is in Program mode. To exit the Program mode the lower cover strip should be
returned to its original posion or the front panel should be refied.
Parameters in Program Mode that consist of the two parts, whole numbers and
digits after the decimal point, are restricted to having a maximum of 6
significant digits. Therefore the number of significant digits entered in the
whole numbers determines the number of digits that are able to be entered in
the digits aer the decimal point. For Example
000001 in the whole numbers makes 0000 available after the decimal place.
000100 in the whole numbers makes 000 available after the decimal place.
010000 in the whole numbers makes 0 available after the decimal place.
15 Programming
4.1 PROGRAM STEPS
Step
Comment
Scaling Factor – whole numbers.
Scaling Factor – digits after the decimal point. The Scaling Factor is the pulses per unit of measure (e.g.pulses/litre, pulses/gallon, etc). The Scaling Factor can be programmed in the range of 0.0001 – 999,999.
Decimal Point for Total Display. The total and preset quantity can be displayed with 0, 1, 2 or 3 decimal point places.
Start Time Delay. The me in seconds (0-9 sec) when Output 2 will switch “on” once the RUN key is pressed.
Prestop Quanty The quantity at which Output 2 will switch “off” before the end of the batch (Eg. If the Preset quanty is 100 litres and the Prestop quantity is 2 litres, Output 2 will switch off after 98 litres.)
Signal Timeout. A me period between 0-99 seconds during which, if there is no flow measured, the Outputs will both switch “off” and the PAUSE message will be displayed.
Batch Limit. This value determines the maximum preset value that may be entered by the operator. A value of zero for the batch limit disables this feature.
Software Version.
Programming 16
4.2 EXAMPLE
A flowmeter produces 20.538 pulses per litre and has a maximum flowrate of 150litres/minute. It is required to batch quanes in batches of around 300 litres and to alarm if there is no flow once the batch has started.
To increase the accuracy of the batch, a two stage valve will be used and the flow will be slow prior to the end of the batch to enable a more accurate cutoff.
It has also been decided to reduce the flowrate 10 litres prior to the end of the batch. The instrument is then programmed as follows:
Value of
Step
Parameter Descripon
00020 5380 1 1
10 2 350 2.XX
Scaling factor (Whole numbers). Scaling factor (Decimals). One decimal place. One second delay on full flow to stop pipe hammer. 10 litre prestop. Two second signal meout. 350 litre batch limit. Software Version.
17 Valve Control and DC Power
5. VALVE CONTROL AND DC POWER
The Model 214Di will operate from an external power source between 928VDC and
draws no more than 4mA. This enables the instrument to be powered from AC
mains adaptors and eliminate the need to run mains voltage in the field.
As the instrument has an internal battery backup it will power the instrument
if DC power is interrupted, but these batteries are not capable of powering
the solenoids or sensors if they require external power (see section 6 for
further description of operaon with battery backup.)
Solid state relay outputs provide control to solenoids or relays and can sink
up to 200mA. The outputs are internally protected against voltage spikes
caused by relays and coils. Connections for a dual stage applicaons is given
on the following page.
For single stage applications, only Output 1 is required.
Specificaon for Outputs
Maximum Current (sink): Maximum Voltage: Saturation Voltage:
200mA. 30VDC. 0.8VDC max across the outputs in the “on” state.
Valve Control and DC Power 18
2+
Power 1-
214D
Opto-
Isolated Outputs
4+ Relay 1
3-
6+ Relay 2
5-
Valve Control 1 Valve Control 2
Relays with DC Coils
19 Baery Backup Version
6. BATTERY BACKUP VERSION
The baery backup version of the Model 214Di is designed to provide power
backup for the instrument if the supply has been interrupted. The two lithium
battery packs provide sufficient capacity to power the instruments for up to 5
years and the operator is warned of a low power condition by a message on the
LCD display. Note: No low baery warning will be displayed whilst there is
external DC power connected. New baeries can be purchased via Contrec or our
distributors and replaced in the field without compromising the IS approvals.
There are two baery packs in each instrument and care must be taken to replace
only one pack at a time so that there is always power connected to the memory.
Failure to do this may result in loss of totals and preset value. Note that
only Contrec supplied batteries can be used for replacement in Intrinsically
Safe installaons.
6.1 POWER INTERRUPTION With the baery backup the Model 214Di has the ability
to resume a batch if the DC power is interrupted during a delivery. The 214Di
will also totalise any incoming pulses while power is unavailable. If a batch
is in progress and the external DC power is lost, both relay outputs will be
deactivated and the batch will be paused. The paused batch can only be
restarted when the DC power returns. However, the paused batch will be
terminated if the STOP key is pressed or if any totalising of pulses causes
the Batch Total to exceed the Preset Value.
Flowmeter Input 20
7. FLOWMETER INPUT
The Model 214Di has an input condioning circuit which will accept signals from
most pulse or frequency producing flowmeters. Links on the rear panel enable
the input circuit to be configured for different signal types. The input will
interface directly to:
Turbine flowmeters. Open collector outputs. Reed switches. Logic signals. Two-
wire proximity switches. The following pages give examples of interconnection
to various signal outputs. A circuit diagram of the input is also provided.
For pulse or logic type signals, the input switching threshold is 1.3 volts.
That is, the input signal must have a “low” voltage of less than 1.2 volts and
a “high” voltage of greater than 1.4 volts. For flowmeters with coils, the
minimum input voltage is 15mV P-P. All inputs are protected for over voltage
up to 28 volts.
21 Flowmeter Input
pull-up = 0 uA (PULSE link (link 1) not installed) pull-up = 15 uA (PULSE link, no external power) pull-up = 150 uA (PULSE link, external power)
+3.3V
Ipull-up
825R
8+
LINK 2
1.3V
NPS (LINK 3)
DBL
DBH
INPUT COMPARATOR
5
7
6
825R
0.01uF
0.1uF
100K
COIL (LINK 1)
100R 7-
Simplified Frequency Input Circuit
1. Squarewave, CMOS or Pulse 8+ 7-
2. Open Collector Wcuitrhre1n5tA/150A internal pull up 8+ 7-
Flowmeter Input 22
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DBL DBH NPS
Switching threshold voltage is 1.3 volts.
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DBL
DBH
NPS
3. Reed Switch – External DC Power With 150A internal pull up current 8+ 7-
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DBL
DBH
NPS
Note: For a switch or reed input with contact bounce link DBH can be switched “on” by linking across the two right pins above DBH. This will eliminate the effect of switch bounce while limiting the input frequency to 200Hz.
23 Flowmeter Input 4. Coils
8 7
8 7
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DB
DBH
NPS
825R input impedance
eg. Millivolt signal from paddlewheel or turbine (15mV P-P minimum).
Note: If the input has a very high impedance, the following link seings should be used:
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DBL DBH NPS
5. Namur Proximity Switch
2 1 8
Link Settings COIL
Link 1
PULSE
Link 2 Link 3
DBL DBH NPS
825R input impedance
For IS connections of Namur switches see Secon 8.
Flowmeter Input 24
6. Namur Proximity Switch – External DC Power
+ 12 Volts
Link Settings COIL
Link 1
PULSE
8+
Link 2
DBL
DBH
Link 3
0V
7-
NPS 825R input impedance
For IS connections of Namur switches see Secon 8.
25 Intrinsic Safety Connections
8. INTRINSIC SAFETY CONNECTIONS
When installing the Model 214Di in hazardous areas, the wiring and
installation must comply with appropriate installation standards.
8.1 COILS
The Model 214Di will connect directly to a turbine flowmeter or paddlewheel
with a cerfied Intrinsically Safe (IS) coil or other cerfied IS sensor which
produce a pulse input provided they do not exceed the following input
parameters:
Ui = 24V Ii = 20mA Pi = 320mW
The maximum allowed capacitance and inductance of the pulse or coil including
the cabling is:
Cext = 20F Lext = 1.5H
The internal capacitance and inductance of the Model 214Di seen on the input
are negligibly small with Ci = 0.02uF and Li = 0mH. The maximum voltage and
current produced by the Model 214Di on its inputs (terminals 8 & 7) are:
Uo = 10.0V (open circuit) Io = 9.0mA (short circuit) Po = 23mW
Intrinsic Safety Connections 26
8.2 SIMPLE APPARATUS Devices such as reed switches which can be classed as
“simple apparatus”, as defined in the CENELEC standards EN60079, can be
connected to the Model 214Di without certification.
8.3 NAMUR PROXIMITY SWITCHES Connecon to cerfied Namur proximity switches is
permitted as shown on the following page with the following maximum input
parameters:
Ui = 24V Ii = 20mA Pi = 320mW
27 Intrinsic Safety Connections Input
SAFE AREA
I
- –
IS CERTIFIED BARRIER Uo = 24 V maximum Io = 20 mA maximum Po = 320 mW maximum L/R < specified for selected barrier
HAZARDOUS AREA
Namur Proximity Detector IS Certified
MODEL 214Di
8+
Link Settings
Link 1
COIL
PULSE
Link 2
DBL
DBH
Link 3
7-
NPS
A Namur Switch Input
Intrinsic Safety Connections 28
8.4 RELAY OUTPUTS The low alarm and high alarm/pulse output can be connected
to suitably certified devices providing the circuit is protected with a
barrier with the maximum safety parameters:
Uo = 28V Io = 93mA Pmax = 0.653W The input capacitance on these terminals is
0.1uF max and the inductance is negligible. Note that the two relay outputs
must be kept as independent IS circuits and each protected with their own
barrier. It is not permissible to connect these circuits via a common barrier.
Solenoid Only cerfied intrinsically safe solenoids may be used for I.S.
applicaons. Because these solenoids have a relavely small coil, they are only
usually suitable for small line sizes and non viscous products. Generally, it
is preferable to use a pneumac system with the solenoid valves controlling air
to a larger pneumatically controlled valve.
SAFE AREA
IS CERTIFIED BARRIER Uo = 28 V maximum Io = 93 mA maximum Po = 653 mW maximum
HAZARDOUS AREA
IS Certified Device such as an Alarm Lamp or IS Solenoid
4 or 6
MODEL 214Di
3 or 5
29 Intrinsic Safety Connections
Installation 30
9.INSTALLATION
9.1 WIRING All wiring must be undergone by a competent persons with the
necessary training and comply to all naonal and local standards and legislaon
Use wire with a minimum temperature rang of 65 Degrees Celsius When connecting
the 214D it is good pracce to use shielded cable. The shield should be
connected to earth at one end of the cable. The other end of the shield should
not be connected. This wiring pracce is mandatory in order to comply with the
requirements for Electromagnec Compability as per EMC-Direcve 2004/108/EC of
the Council of the European Community. 9.2 MAINTENANCE
All printed circuit boards must be repaired by Contrec. In the case of a
fault, no attempt should be made to repair the instrument as the intrinsically
safe cerficaon may be impaired. For further details contact Contrec Ltd or
Contrec representaves listed at the end of this manual. All batteries for use
in hazardous areas must be supplied by Contrec. No substute baeries are
permied as the battery packs contain certified energy liming devices and
insulaon protection. The inside of the instrument should remain clean and free
of contaminants. Aer roune maintenance the instrument must be re sealed to
ensure no ingress occures
9.2.1 Cleaning Clean with mild detergent or maximum 35% isopropyl soluon 9.3
GENERAL Ensure that all gland entries not used are blanked with IP rated gland
plugs/blanking caps. The instrument should be installed so that it is
protected from impact and extreme weather condions Install in a way the
minimises vibraon
31 Installation
9.4 WALL MOUNTING A wall mounting bracket is supplied with each instrument.
Round head screws should be used to attach the bracket to the wall
(countersunk screws should not be used). The bracket is mounted first with the
tray section at the boom. The instrument is then mounted on the bracket with
two screws as shown below.
Installation 32 9.5 PANEL MOUNT VERSION The panel mount version of the Model
214Di is supplied with two panel mount brackets and plug-in terminals which
are accessible from the rear of the instrument. A diagram of the rear panel is
shown below:
Rear View of 214D Panel Mount Case The cutout for the panel mount version is
142mm (5.6″) wide x 88mm (3.5″) high. NOTE. The aluminium enclosure is not
suitable for panel mounng
7 8 6 5 4 3 2 1
33 Installaon
9.5.1 REMOVING THE FRONT PANEL – PLASTIC ENCLOSURE Only open the instrument in
a clean, dry environment The front panel should be removed as follows:
1. Remove the top and boom cover strips (ie. the dark plasc strip) by
levering a screwdriver under one end.
2. Undo the screws retaining the front. Do not remove the screws, they are
retained by O-rings.
3. Remove the front panel from the housing. To replace the front cover,
follow the above procedure in reverse. Ensure that the front panel is aligned
at connector points before tightening the screws.
Installation 34 9.5.2 REMOVING THE FRONT PANEL – METALLIC ENCLOSURE The front
panel should be removed as follows:
1. Unscrew the 4 x pozi drive head screws from each corner of the front
panel.
2. These are retaining screws, held onto the front panel with o-rings 3. Once
fully loosened the front panel will pull away from the housing. To replace the
front cover, follow the above procedure in reverse. Ensure that the front
panel is aligned at connector points before tightening the screws
If slightly sff, the enclosure has a small gap on the right side of the front
panel. This can be used to open the instrument with a tool.
35 Installation
9.6 THE MAIN ELECTRONICS
The front section of the housing contains the microprocessor, display and the baeries if fitted. It is possible to adjust the display contrast via a small potenometer on the board. The Display Contrast is shown below and this can be adjusted for opmum contrast.
Adjacent to this control is a RESET switch which can be used to reset the microprocessor. Note that pressing this button will set the totals to zero and set the preset value to a default figure of 10.
Display Contrast RESET
Battery Connector
CO NTR EC
Battery
Battery
Battery Connector
9.7 GROUNDING THE ENCLOSURE NOTE. This only applies to the metallic enclosure
On one side of the enclosure a ground point is available to aach the 202D to
the nearest protecve earth (PE).
Earth Point
9.8 INSTRUMENT DIMENSIONS 9.8.1 Aluminium / Stainless Enclosure
Installaon 36
161mm
50mm
50mm
7.8.2 Plasc Enclosure
106mm 47mm
27mm
98mm
151mm
51mm
3-6.5mm
51mm
43mm
24mm
37 Installaon
9.9 TERMINAL DESIGNATIONS
All versions
8
Pulse (+) / Coil Input
7
Pulse (-) / Coil Input
6
Output 2 (+)
5
Output 2 (-)
4
Output 1 (+)
3
Output 1 (-)
2
DC Power +9 to 28V
1
DC Power 0V
10. DISPOSAL
Disposal 38
10.1. Instrument Disposal
Contrec instrumentaon should not be thrown into the general waste system.
If within EU member states, this instrument should be disposed of according to
the guidelines set by the WEEE (Waste Electrical and Electronic Equipment)
direcve 2012/19/EU. If outside of the EU, this equipment should be responsibly
disposed of according to local and naonal regulaons for EEE (Electrical and
Electronic Equipment).
By not discarding of this product along with other house hold waste you are
preserving natural resources and reducing waste sent to landfill and
incinerators.
Remove baeries and dispose of separately (see Disposal of Baeries) before
disposal of Contrec instrumentaon.
10.2. Disposal of Baeries
Baeries have an environmental impact, safe and responsible disposal should be
undertaken.
In all EU member states, as per Direcve 2006/66/EC, baeries must not be thrown
away with general waste. Contact your local environmental authority for
informaon regarding disposal or recycling of used baeries, alternavely they
can be returned directly to Contrec Ltd. for disposal.
Please Contact Contrec Ltd before returning baeries for disposal.
Index 39
Index
A
Accumulated Total, 2, 7, 9, 11, 17
B
Batch Limit, 10, 15, 16 Batch Operaons, 12 Batch Total, 2, 7, 17, 19 Baery
Backup, 4, 7, 19
C
Cable Entry, 8 CAL Sequences, 14 ATEX Approval, 5 Coils, 4, 23, 25 Control
Outputs, 12 CSAUS/C Approval, 5
D
DC Power Input, 7 Decimal Point, 15 Display Contrast, 35 Display Test, 11
E
Enty Parameters, 6 Example, 16 External Capacitance, 6 External Inductance, 6
External Power, 17
F
Flow Alarm, 13 Flowmeter Input, 20 Frequency Range, 7
G Group, 5 Grounding, 35
I Input Signal, 20 Installaon, 30 Intrinsic Safety, 5, 25 Isolation, 7
Instrument Disposal, 38
K K-factor, 7
L Link Seings, 22 Low Baery, 19
M Model Number, 4 Mounng, 5, 4, 8
N Namur Proximity, 24, 26
O Open Collector, 22 Operaon, 9
P Panel Mount, 32 Pause Batch, 10, 13, 19 Pneumac System, 28 Preset, 9, 10, 11
Prestop Quantity, 12, 15 Programming, 14
R Reed Switch, 22, 23
Removing the Front Panel, 33
Reset Switch, 35
S
Scaling Factor, 15, 16 Signal Timeout, 13 Simple Apparatus, 26 Solenoids, 17,
28 Specificaon, 7 Start Time Delay, 12, 15 Starng, 10 Stopping, 10 Switching
Power, 7 Switching Threshold, 20
T
Temperature, 8 Temperature Class, 5 Terminal Designaons,
37 Test Mode, 11 Turbine Flowmeters,
20, 23 Two-wire Proximity
Switches, 20, 24
W
Wall Mounng, 31 Wiring, 30