Endress+Hauser Stamolys CA71CODcr User manual

BA00458C/07/EN/14.12
71162867
Valid of:
Software version 01.03.06
Operating Instructions
Stamolys CA71CODcr
Photometric analytical system for determining the chemical
oxygen demand following the DIN dichromate method

Endress+Hauser
Brief overview
Inlet to the sample pump:
•ValveV1
– Front hose: sample inlet
– Rear hose: inlet from valve V2 (0 mg/l O2standard or standard)
•ValveV2
– Front hose: inlet from canister with standard
– Rear hose: inlet from canister with 0 mg/l O2standard
a0012419
Fig. 1: Analyzer (cabinet version without hoses)
1
2
3
4
5
6
Reagent pump (P2), inlet from canister
Display and temperature indicator
Serial interface RS 232
Reactor unit
Valve V4
Cover (broken open in the graphic)
7
8
9
10
11
12
Rinse outputs (wastewater, chromate waste,
overflow)
Reagents, standard
Valve V3
Valve V2
Valve V1
Sample and sulfuric acid pump P1

Stamolys CA71CODcr
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Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . . . . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Notes on safety icons and symbols . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Incoming acceptance, transport, storage . . . . . . . . . . 8
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Installation examples . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 13
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Signal connection . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Switching contacts . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Connection of the sampling vessel . . . . . . . . . . . . . 19
4.6 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 20
5 Operation . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Display and operating elements . . . . . . . . . . . . . . . 21
5.2 Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Timers (version with back-flush pump only) . . . . . . 28
5.4 Modbus RS485 (optional) . . . . . . . . . . . . . . . . . . . 29
5.5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 Commissioning. . . . . . . . . . . . . . . . . . 31
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2 Switch-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7 Maintenance. . . . . . . . . . . . . . . . . . . . 34
7.1 Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . 34
7.2 Replacing reagents . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3 Replacing pump hoses . . . . . . . . . . . . . . . . . . . . . . 36
7.4 Setting the hose cases . . . . . . . . . . . . . . . . . . . . . . 38
7.5 Replacing valve hoses . . . . . . . . . . . . . . . . . . . . . . 39
7.6 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.7 Placing out of service . . . . . . . . . . . . . . . . . . . . . . . 41
8 Accessories. . . . . . . . . . . . . . . . . . . . . 42
8.1 Collecting vessel . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.2 Reagents, cleaner, standard solutions . . . . . . . . . . . 42
8.3 Maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.4 Additional accessories . . . . . . . . . . . . . . . . . . . . . . 43
9 Trouble-shooting . . . . . . . . . . . . . . . . . 44
9.1 Trouble-shooting instructions . . . . . . . . . . . . . . . . . 44
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 44
9.3 Process errors without messages . . . . . . . . . . . . . . 45
9.4 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.5 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.6 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10 Technical data . . . . . . . . . . . . . . . . . . . 49
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
10.4 Performance characteristics . . . . . . . . . . . . . . . . . . 50
10.5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.6 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.7 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.8 Mechanical construction . . . . . . . . . . . . . . . . . . . . 51
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . 52
11.1 Operating matrix . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Safety instructions Stamolys CA71CODcr
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The analyzer is a compact photometric analysis system.
In particular, CA71 is designated for:
• Monitoring sewage treatment plant outlets
• Monitoring the sewage treatment plant inlet
• Monitoring of industrial wastewater
• Monitoring the discharge of industrial wastewater
Any other use than the one described here compromises the safety of persons and the entire
measuring system and is not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.2 Installation, commissioning and operation
Please note the following items:
• Installation, commissioning, operation and maintenance of the measuring system must only be
carried out by trained technical personnel.
Trained personnel must be authorized for the specified activities by the system operator.
• Electrical connection must only be carried out by a certified electrician.
• Technical personnel must have read and understood these Operating Instructions and must
adhere to them.
• Before commissioning the entire measuring point, check all the connections. Ensure that
electrical cables and hose connections are not damaged.
• Do not operate damaged products and secure them against unintentional commissioning.
Mark the damaged product as being defective.
• Measuring point faults may only be rectified by authorized and specially trained personnel.
• If faults can not be rectified, the products must be taken out of service and secured against
unintentional commissioning.
• Repairs not described in these Operating Instructions may only be carried out at the
manufacturer’s or by the service organization.
1.3 Operational safety
The analyzer has been designed and tested to the highest standards and left the factory in perfect
functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
• Installation instructions
• Local prevailing standards and regulations.

Stamolys CA71CODcr Safety instructions
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1.4 Notes on safety icons and symbols
1.4.1 Safety messages
The structure, signal words and safety colors of the signs comply with the specifications of
ANSI Z535.6 ("Product safety information in product manuals, instructions and other collateral
materials").
1.4.2 Document symbols
1.4.3 Special messages
Safety message structure Meaning
DANGER
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation will result in a fatal or serious
injury.
WARNING
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation can result in a fatal or serious
injury.
CAUTION
!
Cause (/consequences)
Consequences if safety message
is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or medium
injury.
NOTICE
Cause/situation
Consequences if safety message
is not heeded
►Action/note
This symbol alerts you to situations that can result in damage to
property and equipment.
È ä 1 This symbol indicates a cross reference to a defined page (e.g. p. 1).
È å 2 This symbol indicates a cross reference to a defined figure (e.g. fig. 2).
Wear protective clothing
Wear a laboratory coat, protective gloves and protective goggles when working on the analyzer and
when handling chemicals.
Please observe the information on the safety data sheets with regard to the dangers posed by the
chemicals used.

Identification Stamolys CA71CODcr
6Endress+Hauser
2 Identification
2.1 Device designation
2.1.1 Nameplate
Compare the (extended) order code on the nameplate (on the analyzer) to the product structure and
your order.
You can read the following information from the nameplate:
•Ordercode
• Extended order code (=order code from the product structure)
• Serial number
•Measuringrange
• Outputs and communication
• Power supply
• Ingress protection
• Environment conditions
2.1.2 Order code and device version
To find out the version of your device, enter the order code indicated on the nameplate in the
search screen at the following address: www.products.endress.com/order-ident
2.2 Scope of delivery
The scope of delivery comprises:
• an analyzer with mains plug
• 4 fastening clips
• a cleaning injector
• a tube of silicone grease
• a NORPREN hose, length 2.5 m (8.2 ft), ID 1.6 mm (1/16 inch)
• a C-FLEX hose, length 2.5 m (8.2 ft), ID 3.2 mm (1/8 inch)
• a PVC hose, length 2.5 m (8.2 ft), ID 10 mm (0.39 inch)
• two hose fittings of each size:
– 1.6 mm x 1.6 mm (1/16 inch x 1/16 inch)
– 3.2 mm x 1.6 mm (1/8 inch x 1/16 inch)
• a hose fitting 3.2 mm x 1.6 mm (1/8 inch x 1/16 inch) for TYGON hose
• two T-hose fittings of each size:
– 1.6 mm x 1.6 mm x 1.6 mm (1/16 inch x 1/16 inch x 1/16 inch)
– 3.2 mm x 3.2 mm x 3.2 mm (1/8 inch x 1/8 inch x 1/8 inch)
• an interference suppressor for the current output
• 4 edge covers
• protective cloves
• protective glasses
•alabcoat
• a hose 4/6 mm (0.16/0.24 inch), PTFE, length 4.5 m (14.7 ft)
• a 5 l (1,32 US gal.) container for chromate containing waste
• a cover for the container, with hose connector
• a quality certificate
• an Operating Instructions (English).

Stamolys CA71CODcr Identification
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2.3 Certificates and approvals
2.3.1 4approval
Declaration of conformity
The product meets the requirements of the harmonized European standards. It thus complies with
the legal requirements of the EC directives.
The manufacturer confirms successful testing of the product by affixing the 4symbol.
2.3.2 Manufacturer certificate
Quality certificate
With the certificate the manufacturer confirms compliance with all technical regulations and the
successful testing individually for your product.

Installation Stamolys CA71CODcr
8Endress+Hauser
3 Installation
3.1 Incoming acceptance, transport, storage
►Make sure the packaging is undamaged!
►Inform the supplier about any damage to the packaging.
Keep the damaged packaging until the matter has been settled.
►Make sure the contents are undamaged!
►Inform the supplier about damage to the contents. Keep the damaged products until the matter
has been settled.
►Check that the order is complete and agrees with your shipping documents.
►The packaging material used to store or to transport the product must provide shock protection
and humidity protection. The original packaging offers the best protection. Also, keep to the
approved ambient conditions (see "Technical data").
►If you have any questions, please contact your supplier or your local sales center.
3.2 Installation conditions
3.2.1 Design, dimensions
a0001355
Fig. 2: GFR version
NOTICE
Sufficient space and backwater in the outflow hose
►Allow at least 400 mm (16") under the housing as space for the waste collecting tank.
►On the left-hand side of the device, observe a lateral distance of at least 350 mm (13.8") for
mounting the collecting vessel.
►The outflow hose should not form a siphon.
60 (2.36)
100(3.94)
140 (5.51)
160 (6.30)
250 (9.84)
125(4.92)
165 (6.50)
Ø21(0.83)
Ø26/1.02
Ø21
(0.83)
119(4.69)
78(3.07)
47(1.85)
648 (25.5)
360 (14.2)
436 (17.2)
243 (9.57)
200 (7.87)
120
(4.72)
326 (12.8)
330 (13.0)
110
(4.33)
Ø27(1.06)
Ø 16 (0.63)
Ø 27 (1.06)
120(4.72)
555 (21.8)
465 (18.3)
500 (19.7)
7-11/
0.28 - 0.43
(M 6)
Ø 26(1.02)
mm (inch)
38 (1.5)

Stamolys CA71CODcr Installation
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3.2.2 Connecting the sample line
3.3 Installation instructions
3.3.1 Analyzer
To install the analyzer at the intended location, proceed as follows:
1. Mount the analyzer and secure it to a vibration-free wall using screws (Ø6 mm / 0.24"). The
fastening clips on the housing make sure that the necessary distance to the wall is observed for
ventilation purposes.
For the installation dimensions, please see the previous chapter.
2. Using a spirit level, check that the cabinet is hanging straight. Only in this way can any air
bubbles present escape from the cell.
3. Fit the edge covers (with GFR housing only).
4. Lay the drain pipe for the reaction products. Where possible, use solid pipes (PE, internal
diameter 1" with 3% incline).
5. Route the drain hoses through the device floor to the outside.
a0016672
Fig. 3: Collecting vessel
1 Connection for level measurement
2 Ventilation
3 Sample supply to analyzer, connection
for hose with ID3.2mm(0.13")
4 Connecting cable of electric agitator
5 Sample supply, connection for hose with
ID3.2mm (0.13")
6 Sample overflow, connection for hose
with ID10mm (0.39")
a0016671
Fig. 4: Dimensions: collecting vessel and base plate
Collecting vessel (at analyzer, with or without level measurement)
Connection hose ID 3.2 mm (1/8 inch)
Customer collecting vessel
Connection hose ID 1.6 mm (1/16 inch)
Max. distance from collecting vessel to analyzer 1 m (3.3 ft)
Max. height difference from collecting vessel to analyzer 0.5 m (1.6 ft)

Installation Stamolys CA71CODcr
10 Endress+Hauser
6. Connect the drain hoses to the connections marked for chromate waste, rinse waste and
emergency overflow.
7. Route the drain hose for dichromate waste into the cover of the canister and make sure the
drain hose for the rinse water and that for emergency overflow end in the drain pipe previously
laid. The drain hose for emergency overflow must be open to air. Avoid siphon formation at all
times!
8. Insert the valve hoses accordingly. These were partly removed from the valves for
transportation. This prevents the hoses from sticking or pressure being applied to a point in the
hose over an extended period.
9. Secure the hose boxes in the appropriate pump holders:
Sample/acid pump, left (rear position), reagent pump, right (center position). The direction of
flow of the sample and reagent must be counterclockwise.
10. Connect the sample supply.
For questions regarding sample conditioning and its automation, please contact Service or the
sales center responsible for your region.
11. Connect the tubes from canisters containing reagents andstandards to the following nozzles:
a0012421
Fig. 5: Valves and valve hoses
1
2
3
4
5
6
7
8
9
10
11
Sample
Standard (100 or 2500 mg/l O2)
0 mg/l O2standard
Sulfuric acid R1
Dichromate solution R2
From sample/acid pump P1
Inlet to sample/acid pump P1
From reagent pump P2
Inlet, reagent pump P2
Inlet, reagent to reactor
Inlet, sample/acid to reactor
a0012351
Fig. 6: Pump 1, top view
R1 Reagent 1
a0012676
Fig. 7: Pump 2, top view
R2 Reagent 2
Canister Tube designation (mark)
Sample
Reagent 1
Reagent 2
Standard solution
Standard solution 0 mg/l O2
P
none (PTFE hose)
R2
S
0

Stamolys CA71CODcr Installation
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3.3.2 Sampling vessel (optional, without back-flush pump)
1. Mount the base plate and collecting vessel on the left-hand side of the analyzer.
2. Connect the hoses for sample intake, sample supply to analyzer and sample overflow to the
appropriate hose connections (å3).
Connection of the level measurement unit and agitator ä19
3.3.3 Back-flush pump (optional)
►Install the back-flush pump unit to the analyzer’s side as shown in diagram. Use the couplings
shipped with the instrument.
a0017247
Fig. 8: Installation of the back-flush pump

Installation Stamolys CA71CODcr
12 Endress+Hauser
3.4 Installation examples
3.4.1 Stamoclean CAT221
A complete measuring system comprises:
• a CAT221 filter system
• an agitated collecting vessel
• a CA71COD analyzer
• a sample pump or sample pressure line
• a compressor resp. compressed air supply
3.4.2 Without filter
A complete measuring system comprises:
• a sample pump with backwash function
• an agitated collecting vessel
• a CA71CODcr analyzer
a0013925
Fig. 9: Complete measuring system
1
2
3
4
Backwash filter
Compressor or compressed air
Sampling pump or sample pressure line
Sample outlet
5
6
7
8
Collecting vessel (optional)
Overflow
Analyzer
Sample line to the analyzer
a0016626-1
Fig. 10: Complete measuring system
1
2
3
Pump with backwash function
Sample line to the analyzer
Analyzer
4
5
6
Overflow
Agitated collecting vessel
Sample
6
753
2
1
4
8

Stamolys CA71CODcr Installation
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3.5 Post-installation check
• After installation, check that all connections are fitted tightly and are leakage resistant.
• Ensure that the hoses cannot be removed without effort.
• Check all hoses for damage.

Wiring Stamolys CA71CODcr
14 Endress+Hauser
4 Wiring
WARNING
!
Device is energized
Improper connection can cause injury or death.
►The electrical connection must only be carried out by a certified electrician.
►Technical personnel must have read and understood the instructions in this manual and must
adhere to them.
►Prior to beginning any wiring work, make sure voltage is not applied to any of the cables.
4.1 Electrical connection
4.1.1 Quick wiring guide
NOTICE
Reaching the terminal block and avoiding damage
►You have to fold out the frame of the analyzer to reach the terminal block.
►After folding the frame into position, check that all the tubes are properly secured and fit
properly into the bottles, as otherwise there is a risk of flooding or incorrect measurement.
Fold out the frame as follows:
1. Release the two bottom Allen screws (AF 6) by 3-4 rotations (å11, item 1).
2. Unscrew the two upper Allen screws completely so that the frame folds out. In this way, you
reach the terminal block (item 2).
a0012673
Fig. 11: Folding out the frame
1 Allen screws AF 6
2Terminalstrip
NOTICE
The device does not have a mains switch
►Install the device near to a fused socket which is easy to reach.

Stamolys CA71CODcr Wiring
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4.1.2 Terminal assignment
CAUTION
!
Shown diagram (å12) is an example
The terminal assignment and cable colors can deviate from the actual assignment and colors!
►Only use the terminal assignment of the sticker in the device (å13) to connect your
analyzer!
a0012456
Fig. 12: Example of the connection sticker
a0017149
Fig. 13: Analyzer from top (open version resp. folded out)
1 Connection department sticker
2 Printed circuit board with terminal strip
3 Backside of the analyzer
4 Connection department sticker Modbus RS485 (optional)

Wiring Stamolys CA71CODcr
16 Endress+Hauser
Version without Modbus
Version with Modbus RS485
Function Designation Terminal one channel
Mains
L3
N2
PE 1
Alarm value 1, channel 1
COM 25
NC 24
NO 23
Alarm value 2, channel 1
COM 28
NC 27
NO 26
Fault
COM 19
NC 18
NO 17
Reserve (unassigned terminals)
COM 22
NC 21
NO 20
Analog output 1
0/4 ... 20 mA
+36
–35
Screen PE1
Sample conditioning
remote control
Input 57
0 V 53
Function Designation Terminal one channel
Mains
L3
N2
PE1) 1
Alarm value 1
COM 25
NC 24
NO 23
Alarm value 2
COM 28
NC 27
NO 26
Fault
COM 19
NC 18
NO 17
Reserve (unassigned terminals)
COM 22
NC 21
NO 20
Analog output 1
0/4 ... 20 mA 2)
+I+
–I-
Shield *

Stamolys CA71CODcr Wiring
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NOTICE
Terms for special terminals
►Limit switches 1 and 2 do not need to be connected if the PLC sets its own alarm values at the
analog output.
►When using a sample conditioning system: Connect terminals 57 and 53 on the analyzer to the
corresponding terminals on the sample conditioning system. For the allocation of these terminals
see the sample conditioning system operating instructions.
►If there is a 24 V voltage at terminal 57, the analyzer will not begin measurement (sample not
ready). To start measurement, the voltage must stay at 0 V for at least 5 seconds.
►All external relay contacts have to be connected to 230 V.
4.2 Signal connection
4.2.1 Screening of the analog outputs
The interference suppressor attenuates electromagnetic effects on control, power and signal lines.
After the connection of the data transfer cables clip the interference suppressor (in scope of delivery)
on the cable cores (not on the outer insulation of the cable!). Place the cable screen out of the
interference suppressor and connect it to PE (brass screw with bolt, top right in the connection
compartment) (å14).
Modbus RS485 3) +1+
–2–
Sample conditioning
remote control
Input 57
0 V 53
1) Brass screw with bolt top right in the connection compartment (marked with *)
2) At Modbus module terminals
3) The Modbus module is already installed and wired up at the factory.
a0001746
Fig. 14: Interference protection of the signal cable
1 Cable screen (to PE )
2 Signal cable
3 Interference suppressor
4 Cable cores of the signal cable
Function Designation Terminal one channel
3
4

Wiring Stamolys CA71CODcr
18 Endress+Hauser
4.2.2 One-channel version
4.3 Switching contacts
Condition fulfilled means:
• AV 1: concentration > Alarm value 1
• AV 2: concentration > Alarm value 2
• Fault: error occurred
Contacts AV 1, AV 2 and fault are only affected during automatic operation.
4.4 Serial interface
Connection Designation Function
Signal inputs
Leak Liquid has collected in the drip pan
No sample No sample available, measurement is not started, display
flashes
Signal outputs
AV 1 Alarm value 1 exceeded or undershot
AV 2 Alarm value 2 exceeded or undershot
Fault Retrieves error message using operation menu
Measurement end Displays "Measurement finished" (5 s)
Analog output l-1 channel 1 0 or 4 mA = measuring range start
20 mA = measuring range end
Connection Terminal connection for
condition fulfilled
Terminal connection for
condition not fulfilled
Terminal connection for
power off
AV 1 A:
R:
25
25
-
-
23
24
A:
R:
25
25
-
-
24
23
25 - 24
AV 2 A:
R:
28
28
-
-
26
27
A:
R:
28
28
-
-
27
26
28 - 27
Fault A:
R:
19
19
-
-
17
18
A:
R:
19
19
-
-
18
17
19 - 18
Unassigned 22
16
13
-
-
-
20
14
11
22
16
13
-
-
-
21
15
12
22
16
13
-
-
-
21
15
12
A = NO current configured
R = NC current configured
RS 232 of CA71 COM 1/2 at PC
SUB-D, nine-pin Function Function SUB-D, nine-pin
3TxDRxD2
2RxDTxD3
8 CTS RTS 7
CTS 8
5GNDGND5
Software protocol:
Output format:
9600 baud, 8 data bits, 1 stop bit, no parity (9600, N, 8, 1)
ASCII

Stamolys CA71CODcr Wiring
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The results (measured value+unit of measure) are output in the "Data memory Measured values"
menu.
The calibration results (measured value+unit of measure) are output in the "Data memory-
Calibration factors" menu.
A null modem cable is required (not a crossed one).
The analyzer does not have to be configured for the interface.
The following commands can be sent from the PC, in order to read out data:
• "D" = Data memory-Measured values
• "C" = Data memory-Calibration factors
• "S" = Setup (parameter entry, configuration...)
• "F" = Frequency (current)
4.5 Connection of the sampling vessel
1. De-energize the analyzer.
2. Fold out the analyzer frame (å11).
3. Guide the cable of the level measurement into the analyzer and connect the terminals as
follows:
– Black electric line (BK) to terminal no. 58
– Yellow electric line (YE) to terminal no. 57
– White electric line (WH) to terminal no. 54
– Green electric line (GN) to terminal no. 53
4. Fold back the analyzer frame.
5. Energize the analyzer and the stirrer of the sampling vessel.

Wiring Stamolys CA71CODcr
20 Endress+Hauser
4.6 Post-connection check
Carry out the following checks after electrical connection:
Current output test:
1. Hold both arrow keys down (see "Display and operating elements" chapter) and connect the
analyser to the mains or switch the mains switch on (if available). Wait until the display "0 mA"
appears.
2. Check on your PLC, PCS or you data logger whether the current value is the same.
3. Press the Fkey. Browse to the next current values (4, 12, 20 mA, depending on the setting).
4. Check that the respective current values are also on your PLC, PCS or your data logger.
5. If the values are not there:
a. Check the terminal assignment for analogue output 1 or 2.
b. Disconnect the analogue outputs from your PLC, PLS or your data logger and repeat steps
14 with the restriction that you measure the current values at the terminals of the analyser
and not at the PLC, SPL or data logger.
If these current values are correct, please check your PLC, SPL, the data logger or the
electrical cables.
Device status and specifications Note
Is the analyser or cable externally undamaged? Visual inspection
Electrical connection Note
Does the supply voltage correspond to the data on the nameplate? 230 V AC / 50 Hz
Are current outputs screened and connected?
Are the mounted cables relieved of tension?
Cable type properly disconnected? Guide power supply and signal lines
separately over the entire travel distance.
Separate cable channels are ideal.
Cable routing without scuffing or cross-overs?
Are power supply and signal lines connected correctly according to wiring
diagram?
Are all screw terminals tightened?
Are all cable entries mounted, tightened and leak-resistant?
Interference suppressor at the analogue output?
Current output simulation See procedure below