field mounted batch controller model 214d

FIELD MOUNTED
BATCH CONTROLLER
MODEL 214D
214D-M-V4.1
June 2017
214D-M-V4.1
CONTENTS
1. Introduction
1.1 Model Number Designation
1.2 Intrinsic Safety Approvals
1
3
4
2. Specification
6
3. Operation
3.1 Front Panel Operation
3.2 Test Mode
3.3 Batch Operations
3.3.1 Control Outputs
3.3.2 Signal Timeout
8
8
10
11
11
12
4. Programming
4.1 Program Steps
4.2 Example
13
14
15
5. Valve Control and DC Power
16
6. Battery Backup Version
18
7. Flowmeter Input
19
8. Intrinsic Safety Connections
8.1 Coils
8.2 Simple Apparatus
8.3 Namur Proximity Switches
8.4 Relay Outputs
24
24
25
25
27
214D-M-V4.1
9. Installation
9.1 Wall Mounting
9.2 Panel Mount Version
9.3 Removing the Front Panel
9.4 The Main Electronics
9.5 Wiring
9.6 Maintenance
9.7 Terminal Designations
29
29
30
31
33
34
34
34
Index
35
214D-M-V4.1
Introduction
1
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 compatible 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 attractive polycarbonate enclosure which
is completely watertight. A universal bracket is supplied as standard for
wall mounting while optional 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:
Ÿ The voltage drop across the solenoid outputs in the 214D is only 0.8 Volts.
Ÿ The voltage supply for the DC input can go as low as 9 Volts.
Ÿ The 214D has an overall lower current consumption than the previous
model with an improved battery life - the battery life in the new model
is typically 5 years regardless of the time the unit spends in totalising or
batching modes.
Ÿ The millivolt input can accept signals as low as 15mV P-P.
Ÿ The 214D has a wide frequency range - 0Hz to 10kHz.
Ÿ The 214D has a wider K-factor range - K-factors from 0.0001 to 999,999
can be programmed.
Ÿ Unlike the previous Model 214, the 214D has an additional mounting
option - it is available in a panel mount version.
Ÿ The 214D has an improved output response time of less than 20msec.
Ÿ Ability with battery backup to resume a batch if external power is
interrupted.
Ÿ The 214D has a Test Mode for testing control outputs.
Ÿ A programmable batch limit is provided.
214D-M-V4.1
2
Introduction
The Model 214Di Rate Totaliser conforms to the EMC-Directive of the Council of
European Communities 2014/30/EU, the LVD directive 2014/35/EU and the following
standards:
EN61326:2013
Electrical equipment for measurement, control and
laboratory use – EMC requirements :
Residential, 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 instructions in Section 9.5
must be adhered to.
214D-M-V4.1
Introduction
3
1.1 MODEL NUMBER DESIGNATION
The Model Number of the 214Di describes the unit type, output and
backup options installed and the mounting options.
Model 214Di . 2 0 C
Model
Intrinsically Safe
Batch Controller - 214Di
0 - Standard solid state relay
outputs
Type of Mounting
0 - No cable entry holes
1 - Panel mount
2 - Wall mount with cable glands
4 - 1" NPT or BSP bottom stem
flowmeter mount
5 - 1" NPT or BSP rear stem
flowmeter mount
6 - 2" galvanised pipe bracket
Approvals
C CSA USA / Canada approval
M ATEX/IECEx approval
eg. Standard non IS wall mounted Batch Controller would be Model 214Di.20
214D-M-V4.1
4
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 certification details are:
IECEx Approval
IECEx BVS 15.0099X
R at i n g
Ex ia IIB T4 Gb
ATEX Approval
Rating
Ambient Temperature:
BVS 15 ATEX E 106 X
II 2G Ex ia IIB T4 Gb
Maximum ambient temperature of 60°C.
CSA US/C Approval
Type:
LR 104 840-5.
Class 1, Groups C and D.
When installing in hazardous areas, the instrument must be installed
according to the guidelines in Section 8 and in accordance with standards for
wiring and installation in hazardous areas.
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.
214D-M-V4.1
Introduction
5
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
Entity 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.
214D-M-V4.1
6
Specification
2. SPECIFICATION
General
Display:
Batch Total:
Accumulated Total:
Preset:
K-factor:
Decimal Points:
Frequency Range:
Signal Type:
DC Power Input:
LCD which is continuously powered.
7 digits with 10mm (0.4") high digits.
Displayed when the ACCUM TOTAL button 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 position is fully programmable
for the total and preset.
0Hz to 10kHz.
Link settable for sinewave (15mV P-P minimum),
open collector, reed switch, pulse or
Namur proximity switch.
9-28 Volt at 4mA maximum.
Battery Backup
Type:
Battery Life:
Two lithium battery 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 battery.
Both outputs are separately isolated via
opto-isolators.
214D-M-V4.1
Specification
7
Physical
Temperature:
Dimensions:
Protection:
Cable Entry:
Material:
Operating temperature: -20°C to 60°C.
98mm (3.9") high x 152mm (6.0") wide x
43mm (1.7") deep (cable glands not included).
Sealed to Nema 4X or IP67 standards.
By cable glands.
Polycarbonate and ABS.
Wall Mounting:
Universal mounting bracket supplied as standard.
Pipe Mounting:
A galvanised metal bracket is available
which enables the Model 214Di to be
attached to a 2" vertical or horizontal pipe.
Turbine Meter Adaptor:
An optional mounting stem is available
for mounting the Model 214Di directly on
turbine flowmeters which have a 1" NPT
boss or 1" BSP boss.
Panel Mounting:
Supplied with mounting brackets.
Terminals accessible from rear. The panel
mount version is not watertight.
Cutout:
142mm (5.6") wide x 88mm (3.5" high).
214D-M-V4.1
8
Operation
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
operating parameters and calculation 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 operations. The three keys
each have dual functions as described below:
STOP
RUN
ACCUM
TOTAL
PRESET
Front Panel Keys
SETTING THE PRESET QUANTITY
The Batch quantity is programmed as follows:
Switch Action
Press PRESET
Display
Comments
The Accumulated Total together with
the Preset quantity is displayed.
"1" 2345 The most significant digit of the Preset
quantity 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.)
214D-M-V4.1
Operation
9
Switch Action
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 quantity.
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 until changed by the user. The Preset quantity can only be set
while the instrument is in a non-operational 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 section 3.3.
STOPPING
The process can be stopped at any time 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 time.
214D-M-V4.1
10
Operation
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 functions as the PRESET key and
enables the Preset quantity to be changed.
The Accumulated Total cannot normally be reset, except by pressing the
internal Reset button (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 starting 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.
214D-M-V4.1
Operation
11
3.3 BATCH OPERATIONS
The operation of the Batch Controller is shown below:
PAUSE
Run
Stop Run
Batch
Quantity
Reached
Run
"on" state
Output 1
"on" state
Output 2
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. Alternatively, the second output
can be used to control a pump.
The output operation is shown above.
A time delay between the Start and the time when Output 2 switches on
can be programmed to provide a soft startup. The delay can range from 0
(no delay) to 9 seconds.
A Prestop quantity (i.e. the quantity 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 quantities to be batched.
214D-M-V4.1
12
Operation
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
continued 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 timer will be
reset and a slow start will occur with a full time delay to ensure a correct
start up. The totals will not be reset and the batch quantity 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 condition is maintained until acknowledged by pressing the
STOP switch. The alarm condition is also signalled to the operator by the
PAUSE message being flashed on the display.
The instrument enables the user to program a time 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.
214D-M-V4.1
Programming
13
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. By removing the lower cover strip (i.e. the dark grey strip along the
bottom of the enclosure) and turning it end for end and replacing it.
This brings a small magnet, on the inside of the cover strip, in close
vicinity of a reed switch inside the instrument.
2. By removing the front section 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 Calibration 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 position or the front panel should be refitted.
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 after 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.
214D-M-V4.1
14
Programming
4.1 PROGRAM STEPS
Step
Comment
CAL 01
Scaling Factor - whole numbers.
CAL 02
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.
CAL 03
Decimal Point for Total Display.
The total and preset quantity can be displayed with 0, 1,
2 or 3 decimal point places.
CAL 04
Start Time Delay.
The time in seconds (0-9 sec) when Output 2 will
switch "on" once the RUN key is pressed.
CAL 05
Prestop Quantity
The quantity at which Output 2 will switch "off"
before the end of the batch (Eg. If the Preset quantity
is 100 litres and the Prestop quantity is 2 litres,
Output 2 will switch off after 98 litres.)
CAL 06
Signal Timeout.
A time 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.
CAL 07
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.
SOFT
Software Version.
214D-M-V4.1
Programming
15
4.2 EXAMPLE
A flowmeter produces 20.538 pulses per litre and has a maximum flowrate of
150litres/minute. It is required to batch quantities 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
Parameter
Description
CAL 01
CAL 02
CAL 03
CAL 04
00020
Scaling factor (Whole numbers).
5380
Scaling factor (Decimals).
1
One decimal place.
1
One second delay on full flow to
stop pipe hammer.
CAL 05
CAL 06
CAL 07
SOFT
10
10 litre prestop.
2
Two second signal timeout.
350
350 litre batch limit.
2.XX
Software Version.
Step
214D-M-V4.1
16
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 operation 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 applications is given
on the following page.
For single stage applications, only Output 1 is required.
Specification for Outputs
Maximum Current (sink):
Maximum Voltage:
Saturation Voltage:
200mA.
30VDC.
0.8VDC max across the outputs in the "on"
state.
214D-M-V4.1
Valve Control and DC Power
17
2+
Power
1-
214D
Valve Control 1
4+
Relay 1
3OptoIsolated
Outputs
Valve Control 2
6+
Relay 2
5-
Relays with DC Coils
214D-M-V4.1
18
Battery Backup Version
6. BATTERY BACKUP
VERSION
The battery 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 battery warning will be displayed whilst there is external DC
power connected.
New batteries can be purchased via Contrec or our distributors and replaced
in the field without compromising the IS approvals. There are two battery
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 installations.
6.1 POWER INTERRUPTION
With the battery 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.
214D-M-V4.1
Flowmeter Input
19
7. FLOWMETER INPUT
The Model 214Di has an input conditioning 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:
Ÿ
Ÿ
Ÿ
Ÿ
Ÿ
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.
214D-M-V4.1
Flowmeter Input
+3.3V
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)
Ipull-up
20
INPUT COMPARATOR
LINK 2
Simplified Frequency Input Circuit
214D-M-V4.1
Flowmeter Input
1. Squarewave, CMOS or Pulse
21
Link Settings
COIL
PULSE
Link 1
Link 2
DBL
DBH
Link 3
NPS
Switching threshold voltage is 1.3 volts.
2. Open Collector
With 15mA/150mA internal pull up
current
Link Settings
COIL
PULSE
DBL
DBH
Link 1
Link 2
Link 3
NPS
3. Reed Switch - External DC Power
With 150mA internal pull up
current
Link Settings
COIL
PULSE
DBL
DBH
Link 1
Link 2
Link 3
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.
214D-M-V4.1
22
Flowmeter Input
4. Coils
Link Settings
COIL
PULSE
DB
DBH
Link 1
Link 2
Link 3
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 settings should be used:
Link Settings
COIL
PULSE
DBL
DBH
Link 1
Link 2
Link 3
NPS
5. Namur Proximity Switch
Link Settings
COIL
PULSE
DBL
DBH
Link 1
Link 2
Link 3
NPS
825R input impedance
For IS connections of Namur switches
see Section 8.
214D-M-V4.1
Flowmeter Input
23
6. Namur Proximity Switch - External DC Power
Link Settings
COIL
PULSE
DBL
DBH
Link 1
Link 2
Link 3
NPS
825R input impedance
For IS connections of Namur switches
see Section 8.
214D-M-V4.1
24
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 certified Intrinsically Safe (IS) coil or other certified 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 = 20mF
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
214D-M-V4.1
Intrinsic Safety Connections
25
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
Connection to certified Namur proximity switches is permitted as shown on
the following page with the following maximum input parameters:
Ui = 24V
Ii = 20mA
Pi = 320mW
214D-M-V4.1
-
+
Uo = 24 V maximum
Io = 20 mA maximum
Po = 320 mW maximum
L/R < specified for selected barrier
IS CERTIFIED BARRIER
SAFE AREA
Input
A Namur Switch Input
I
7-
8+
Link 3
Link 2
Link 1
DBL
COIL
Link Settings
MODEL 214Di
NPS
DBH
PULSE
Namur Proximity Detector
IS Certified
HAZARDOUS AREA
26
Intrinsic Safety Connections
214D-M-V4.1
Intrinsic Safety Connections
27
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 certified intrinsically safe solenoids may be used for I.S.
applications.
Because these solenoids have a relatively small coil, they are only usually
suitable for small line sizes and non viscous products.
Generally, it is preferable to use a pneumatic system with the solenoid
valves controlling air to a larger pneumatically controlled valve.
214D-M-V4.1
Uo = 28 V maximum
Io = 93 mA maximum
Po = 653 mW maximum
IS CERTIFIED BARRIER
SAFE AREA
3 or 5
4 or 6
MODEL 214Di
IS Certified Device
such as an Alarm Lamp
or IS Solenoid
HAZARDOUS AREA
28
Intrinsic Safety Connections
214D-M-V4.1
Installation
29
9. INSTALLATION
9.1 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 bottom. The instrument is then mounted on the bracket
with two screws as shown below.
214D-M-V4.1
30
Installation
9.2 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.
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Installation
31
9.3 REMOVING THE FRONT PANEL
The front panel should be removed as follows:
1. Remove the top and bottom cover strips (i.e. the dark plastic 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.
214D-M-V4.1
32
Installation
214D-M-V4.1
Installation
33
9.4 THE MAIN ELECTRONICS
The front section of the housing contains the microprocessor, display and
the batteries if fitted. It is possible to adjust the display contrast via a
small potentiometer on the board. The Display Contrast is shown below
and this can be adjusted for optimum 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.
RESET
Battery Connector
CO NTREC
SYSTEMS
Display Contrast
BATTERY
BATTERY
Battery Connector
SPECIAL CONDITIONS FOR SAFE USE
To comply with this products ATEX/IECEx certification the special conditions
for safe use must be followed.
The Instrument type 214Di shall be mounted in an area where electrostatic
charge/discharge will be avoided.
214D-M-V4.1
34
Installation
9.5 WIRING
When connecting the 214Di it is good practice 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 practice is mandatory in order to comply with the requirements
for Electromagnetic Compatibility as per EMC-Directive 2004/108/EC of the
Council of the European Community.
9.6 MAINTENANCE
All printed circuit boards must be repaired by Contrec. In the case of a fault,
no attempt should be made to repair the board as the intrinsically safe
functionality may be impaired.
All batteries for use in hazardous areas must be supplied by Contrec
No substitute batteries are permitted as the battery packs contain certified
energy limiting devices and insulation protection.
9.7 TERMINAL DESIGNATIONS
All versions
8
7
Pulse (+) / Coil Input
Pulse (-) / Coil Input
6
5
Output 2 (+)
Output 2 (-)
4
3
Output 1 (+)
Output 1 (-)
2
1
DC Power
DC Power
+9 to 28V
0V
214D-M-V4.1
Index
Index
G
Group, 4
Removing the Front
Panel, 31
Reset Switch, 33
A
Accumulated Total, 1, 6,
8, 10, 16
I
Input Signal, 19
Installation, 29
Intrinsic Safety, 4, 24
Isolation, 6
S
Scaling Factor, 14, 15
Signal Timeout, 12
Simple Apparatus, 25
Solenoids, 16, 27
Specification, 6
Start Time Delay, 11,
14
Starting, 9
Stopping, 9
Switching Power, 6
Switching Threshold,
19
B
Batch Limit, 9, 14, 15
Batch Operations, 11
Batch Total, 1, 6, 16, 18
Battery Backup, 3, 6, 18
C
Cable Entry, 7
CAL Sequences, 13
ATEX Approval, 4
Coils, 3, 22, 24
Control Outputs, 11
CSAUS/C Approval, 4
D
DC Power Input, 6
Decimal Point, 14
Display Contrast, 32
Display Test, 10
E
Entity Parameters, 5
Example, 15
External Capacitance, 5
External Inductance, 5
External Power, 16
F
Flow Alarm, 12
Flowmeter Input, 19
Frequency Range, 6
K
K-factor, 6
L
Link Settings, 21
Low Battery, 18
M
Model Number, 3
Mounting, 4, 3, 7
N
Namur Proximity, 23,
25
O
Open Collector, 21
Operation, 8
P
Panel Mount, 29
Pause Batch, 9, 12, 18
Pneumatic System, 27
Preset, 8, 9, 10
Prestop Quantity, 11,
14
Programming, 13
35
T
Temperature, 7
Temperature Class, 4
Terminal Designations,
34
Test Mode, 10
Turbine Flowmeters,
19, 22
Two-wire Proximity
Switches, 19, 23
W
Wall Mounting, 29
Wiring, 34
R
Reed Switch, 21, 22
214D-M-V4.1
214D-M-V4.1