Endress+Hauser CUM 740 User manual

BA 232C/07/en/07.03
No. 51504299 CUM 740
Transmitter for Turbidity
and Solids Contents
Operating Instructions
Endress Hauser
The Power of Know How
Quality made by
Endress+Hauser
ISO 9001
ENDRESS+HAUSER
CUM 740

CUM 740
Endress+Hauser 1
Table of contents
1. Safety instructions ............................................................................. page.............................. 2
2. General information ........................................................................... ...................................... 3
2.1 Assembly instructions.............................................................. ...................................... 3
2.2 Functions................................................................................. ...................................... 4
2.3 Maintenance instructions......................................................... ...................................... 5
3. General description............................................................................ ...................................... 6
4. Front view of control panel................................................................. ...................................... 6
5. Programming guidelines.................................................................... ...................................... 7
5.1 Measurement Cycle ................................................................ ...................................... 8
5.2 Parameter Entry ...................................................................... ...................................... 8
5.3 Calibration Procedure.............................................................. ...................................... 9
5.4 Solids Input.............................................................................. .................................... 10
5.5 Change Frequency.................................................................. .................................... 10
5.6 Select Configuration ................................................................ .................................... 11
5.7 Selection of Foreign Language ............................................... .................................... 12
5.8 Reading Error Messages......................................................... .................................... 13
Error Messages ....................................................................... .................................... 13
6. Putting into operation......................................................................... .................................... 14
6.1 Calibration ............................................................................... .................................... 14
6.1.1 2-point-calibration:(usually sufficient) ...................................... .................................... 14
6.1.2 Multipoint calibration................................................................ .................................... 15
7. Inputs and Outputs ............................................................................ .................................... 19
7.1 Control Inputs .......................................................................... .................................... 19
7.2 Signal Outputs......................................................................... .................................... 19
7.3 Analog Output ......................................................................... .................................... 19
8. Adjustment ranges of concentration.................................................. .................................... 19
9. Terminal assignments ....................................................................... .................................... 20
10. Connecting assignments of probe plug, -socket and extension cable ................................... 20
11. Serial interface CUM 740 (Option) .................................................... .................................... 21
12. Special version “2 sensors” ............................................................... .................................... 22
13. Technical data ................................................................................... .................................... 24
Annex ................................................................................................ .................................... 26

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1. Safety Information / Sicherheitshinweise / Informations de securité
GB
lOnly authorized personnel is allowed to carry out installation, putting into operation,
handling, maintenance and repairs applying the relevant safety rules for mechanical
engineering and electrical engineering especially norm EN 292.
NOTE: Improper handling may cause personal injury
or material damage!
lThe declaration of conformity is only with reference to the measuring transformer
and not its assembly.
D
lInstallation, Inbetriebnahme, Handhabung, Wartung und Reparatur darf nur von
autorisiertem Fachpersonal ausgeführt werden. Anzuwenden sind hierbei die
einschlägigen Sicherheitsrichtlinien für Maschinenbau und Elektrotechnik,
insbesondere die Norm EN 292.
ACHTUNG: Durch unsachgemäße Handhabung können Personen- und
Sachschäden entstehen!
lDie Konformitätserklärung bezieht sich nur auf den Meßumformer und nicht auf
dessen Montage.
F
lInstallation, mise en service, manipulations, entretien et réparation doivent être effectues
que par des techniciens qualifiés. Les instructions de sécuritémachines et
électrotechniques doivent être appliquées, et tout particulièrement la norme EN 292.
ATTENTION: Des manipulations inappropriées peuvent entraîner des
dommages matériels et corporels!
lLe déclaration de conformitése réfère seulement au systéme de mesure
et non àson montage.

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2. General information
2.1 Assembly instructions
•The measuring location must allow a representative measurement.
•We recommend to equip the system with an additional protective roof against direct
weather factors (e.g. deposition of snow).
•Holding devices must ensure that the weight of the device (approx. 5 kg) can be picked
up without vibrations.
•Install the system at a location which can be easily accessed in order to avoid danger to
operating personnel (e.g. at putting into operation, maintenance and cleaning).
•The probe must be made easily accessible as well.
•The construction of the device must be secured with 1A.
•Any cable connections have to be laid in a manner that prevents mechanical damages
and disturbances by other cables.
•The load capacity of the probe cable is maximally designed for the probe with probe
weight and screen grid.
•The probes are measuring technical devices. Please note that the measuring windows
cannot be damaged, e.g. at the built-in version by weld beads in the pipeline.

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2.2 Functions
NOTE: For a correct functioning of the device please proceed according to the operation
instructions
•In the annex of this manual there is a blank which can be used to fill in by hand all
parameters specific to measuring location (important e.g. in case of loss of data).
•All adjusted parameters are battery-buffered. The battery-life is approx. 5 years.
•In the terminal cabinet, there are all fuses of the measuring transformer (refer to item 9.,
“terminal assignments“)
•Note that generally for all probe types strong scrapers and heavy contamination of the
measuring windows may impair the measuring ability.
•ATTENTION!
Start the device only when the probe plug is connected and screwed!
Plugging in or out of the probe only when the device is off!

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2.3 Maintenance instructions
Every four weeks:
Cleaning of the probe:
Remove rough deposits at the cable with a cloth.
Clean the soiled probe with a brush and soap-suds.
ATTENTION: Fact is that the measured value may be impaired by heavy scratches or damages
at the measuring windows.
The cleaning cycle may be extended depending on application (experience)
Yearly jobs:
General function test:
Electronics:
Check probe calibration.
(Battery buffer: Durability of the battery = 5 years)
Tighten cable terminals and control their position.

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3. General description
The CUM 740 is controlled by a 16-bit-microcontroller and allowsthe following functions:
lDetection and processing of measured values
lSpecial menu-driven routine with an alphanumeric display
lMonitoring of the system and probes
lStorage and control of user parameters
All user parameters such as measuring range, alarms, cleaning intervals and adjustment of output
signals are fed in a menu-driven routine and stored in a battery-buffered memory.
The 6 position keypad is used to enter program parameters and to move horizontally and vertically in the
menus on the display. During the measurement cycle, the numeric results are shown on an LCD-display
and at the same time on an LED-display which can be read from a longer distance.
LEDs are integrated in the keypad to show different states of the system, control and outputs
4. Front view of control panel
12
34
1 = LED-Display
2 = LCD-Display
3 = Keys for operation: 4 = Control LEDs:
M - for the main routine LED 1 (M) Alarm A
“MEASUREMENT”LED 2 (CE) Alarm B
CE - for backwards movements in the submenu LED 3 (
Ö ) Range exceeded
Ö - for backwards movement in the main menu LED 4 ( × ) Below range
- to increase numeric values in the submenu LED 5 (E) Call in error display
× - for forward movement in the main menu LED 6 (R) Operation cleaning program
- for decrease of numeric values in the submenu
E - to confirm main menu items
- to confirm numeric values and parameters 5 = Power switch
- to change the display during the
measurement
R - for adjuasting the calibration factor
5

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5. Programming
The main menu includes the following titles always shown in capital letters:
MEASUREMENT
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY
After the instrument is powered on, it switches automatically into the measuring state. By pressing the
“M“ key you get the main routine MEASUREMENT (same from almost any main routine or sub routine).
If the measurement program is not automatically started after switch on (e.g. if the system has not been
configured yet), press the “M“ key before turn on and until the word MEASUREMENT is shown on the
LCD display.
General:
a) Vertical movement in the main menu is done by the arrow keys ‘Ö‘and ‘ב.
To enter a main item press the “E“ key.
‘בforward movement in the main menu
‘Ö‘backward movement in the main menu
‘E’ enter main routine, continue in each submenu
‘M’ move to the start of the main menu (routine MEASUREMENT).
b) Horizontal backward and forward movement at each selected submenu by using
the “E“ and “CE“keys.
‘E’ forward movement at the submenu
‘CE’backward movement at the submenu
c) Within a subroutine, numerical values can be increased and decreased by continuously pressing
keys ’Ö‘and ‘ב. The selection is accepted by pressing the “E“ key.
‘Ö‘numerical value increase
‘בnumerical value decrease
‘E’ accept value and store it
d) Code no. to get into the submenus: Enter the number “91“.

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5.1 Routine MEASUREMENT / Main Menu
--------------- MEASUREMENT
I
Measured value (mg/l, g/l, FTU, NTU, %, ppm)
I
Analog output (mA)
I
Frequency (Hz)
Function:
Detection, evaluation and display of the probe signal,
of the anaolg current and the probe frequency as well as
setting the alarm switches
Operation:
By once pressing the key “E“ the display for the physical measured value is switched to the
corresponding analog output signal (current) By pressing the key “E“ twice the measured probe
frequency or 505 Hz appear as error display on the LCD display, as well as the corresponding measured
value on the LED display.
Return into the main menu with the key “M“.
Pressing the “K“ key allows the adjustment of the calibration factor (see 5.6, “configuration“).
‘E’selection of display measured value or display analog output and frequency
‘K’adjust calibration factor
‘M’return to main menu
5.2 Routine PARAMETER ENTRY
--------------- PARAMETER ENTRY
I
Measurement range - start (g/l, FTU, NTU, %, ppm)
I
Measurement range - end (g/l, FTU, NTU, %, ppm)
I
Alarm A (g/l, FTU, NTU, %, ppm)
I
Alarm B (g/l, FTU, NTU, %, ppm)
I
Damping (s)
I
Cleaning interval (min)
I
Cleaning period (s)
Function:
- Measuring range - start and end:
Selectable concentration range within a calibration curve, the analog output
(signal current 0-20 mA or 4-20 mA) being assigned in linear manner.
The display (LED and LCD) only indicate values which are higher than half of the
measuring ranges at the start and smaller than double the ranges at the end.
Range start and end values are the same for setting the alarms.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY

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- Alarm values Alarm A and Alarm B:
Concentration-threshold values for alarm relays. The switch hysteresis is ± 2 % each.
- Response Time (Damping) (1 - 600 s):
The response time sets the time interval period in seconds, by which the probe average signal
(corresponding to the concentration value) can be arithmetically determined. The probe signal is
measured every 0.5 s. The selected value is valid for the actual measurement as well as the
calibration of the probe (see section 5.3).
- Cleaning interval (1 –720 min):
Selection of a time interval (in minutes) for a special cleaning routine (if selected).
- Cleaning period (1 –600 s):
Time period of the probe cleaning process in seconds.
(“Connection of solenoid valve“see annex)
Operation:
Movement through the submenu and selection of numerical values refer to item 5.b) and 5.c) “General“.
5.3 Routine CALIBRATION
------------- CALIBRATION
I
Input of code number (91)
I
Number of measuring points (n)
I
Measuring points 1...n (Hz)
Function:
For calibration the probe signals (measuring points 1...n) which
are measured by media of comparison with known concentration
are detected and stored in any order.
Before deliverytheCUM740 is calibrated at the factory(refer to item 5.6 CONFIGURATION, factory
adjustment). A calibration specific to application is necessary, as far as “standards“(e.g. formazine) for
turbidity is not worked with.
For calibration we generally recommend to set the damping to 2 seconds.
Operation:
- Code number:
Two-digit number. If it is incorrect, the submenu will be left and the main menu routine
MEASUREMENT will be returned to.
- Number of measuring points:
Number of media points for comparison to be used for calibration (min. 2, max. 8).
- Measuring points:
Display of every measuring point number and the detected probe signal (response time / damping
please refer section 5.2, “parameter entry“). Storing of measured value by pressing the key “E“.
(Attention: the previous measured value of this measuring point number is overwritten.)
Return one measuring point by “CE“. Press the key “M“ to return into the main menu.
Attention: Please use for zero-calibration (clear water) a black vessel (bucket 10 ltr.).
Please cover bucket during calibration to avoid artificial light.
MEASURING
I
PARAMETER ENTRY
I
CALIBRATION
I
SOLIDS INPUT
I
FREQUENCY
I
CONFIGURATION
I
LANGUAGE
I
ERROR DISPLAY