Endress+Hauser Stamolys CA71CODcr User manual

BA00458C/07/DE/13.11
71148153
Valid of:
Software version 01.03.03
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
Endress+Hauser 3
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 conventions and icons . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Installation examples . . . . . . . . . . . . . . . . . . . . . . . 11
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 12
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Signal connection . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Switching contacts . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 Connecting the collecting vessel . . . . . . . . . . . . . . 18
4.6 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 19
5 Operation . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Display and operating elements . . . . . . . . . . . . . . . 20
5.2 Local operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6 Commissioning. . . . . . . . . . . . . . . . . . 28
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2 Switch-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7 Maintenance. . . . . . . . . . . . . . . . . . . . 30
7.1 Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . 30
7.2 Replacing reagents . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.3 Replacing pump hoses . . . . . . . . . . . . . . . . . . . . . . 32
7.4 Setting the hose cases . . . . . . . . . . . . . . . . . . . . . . 33
7.5 Replacing valve hoses . . . . . . . . . . . . . . . . . . . . . . 34
7.6 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.7 Placing out of service . . . . . . . . . . . . . . . . . . . . . . . 36
8 Accessories. . . . . . . . . . . . . . . . . . . . . 37
8.1 Collecting vessel . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2 Reagents, cleaners, standard solutions . . . . . . . . . . 37
8.3 Maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.4 Additional accessories . . . . . . . . . . . . . . . . . . . . . . 38
9 Troubleshooting . . . . . . . . . . . . . . . . . 39
9.1 Troubleshooting instructions . . . . . . . . . . . . . . . . . 39
9.2 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.3 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10 Technical data . . . . . . . . . . . . . . . . . . . 44
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10.4 Performance characteristics . . . . . . . . . . . . . . . . . . 45
10.5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.6 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.7 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.8 Mechanical construction . . . . . . . . . . . . . . . . . . . . 46
11 Appendix. . . . . . . . . . . . . . . . . . . . . . . 48
11.1 Operating matrix . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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 sewage treatment plant inlets
• Monitoring process 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.
The technical personnel must be authorized to perform such tasks by the owner-operator.
• The electrical connection must only be performed by an electrical technician.
• 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 for correctness.
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 directly at the
manufacturer’s or by the service organization.
1.3 Operational safety
The analyzer has been designed and tested according to the state of the art 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
Endress+Hauser 5
1.4 Notes on safety conventions and icons
1.4.1 Warning notices
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
!
Causes (/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
!
Causes (/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
!
Causes (/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 stands for a cross-reference to a specific page (e.g. Page 1).
È å 2 This symbol stands for a cross-reference to a specific graphic (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
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 power supply plug
• 4 plastic fastening clips
• a cleaning injector
• 1 tube of silicone grease
• 1 NORPRENE hose, length 2.5 m (8.2 ft), ID 1.6 mm (1/16")
• 1 C-FLEX hose, length 2.5 m (8.2 ft), ID 3.2 mm (1/8")
• 1 PVC hose, length 2.5 m (8.2 ft), ID 10 mm (0.39")
• 2 hose fittings, each of size:
– 1.6 mm x 1.6 mm (1/16" x 1/16")
– 3.2 mm x 1.6 mm (1/8" x 1/16")
• 1 hose fitting 3.2 mm x 1.6 mm (1/8" x 1/16") for Tygon hose
• 2 T-hose fittings, each of size:
– 1.6 mm x 1.6 mm x 1.6 mm (1/16" x 1/16" x 1/16")
– 3.2 mm x 3.2 mm x 3.2 mm (1/8" x 1/8" x 1/8")
• an interference suppressor for the current output
• 4 edge covers
• Protective gloves
• Protective goggles
• Laboratory coat
• Hose 4/6 mm (0.16/0.24") natural PTFE, length 4.5 m (14.7 ft)
• 5 l container (1.32 US gal.) for chromate waste
• Cover for container with hose connection nipple
• a quality certificate
• 1 set of Operating Instructions (English)

Stamolys CA71CODcr Identification
Endress+Hauser 7
2.3 Certificates and approvals
2.3.1 4mark
Declaration of Conformity
The product meets the requirements of the harmonized European standards.
As such, it meets the legal regulations of the EC directives.
The manufacturer confirms successful testing of the product by affixing to it the 4- mark.
2.3.2 Manufacturer certificate
Quality certificate
With the certificate, the manufacturer confirms that all technical regulations are met and specified
tests have been carried out 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 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 delivery contents. Keep the damaged products until the
matter has been settled.
►Check that the scope of delivery is complete and matches your order and the shipping
documents.
►Pack the product in such a way as to protect it reliably against impact and moisture for storage
and transportation. The original packaging provides optimum protection. In addition, the
permitted ambient conditions must be observed (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
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
Endress+Hauser 9
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 150 mm (5.91") for
mounting the collecting vessel.
►The outflow hose should not form a siphon.
3.2.2 Connecting the sample line
3.3 Installation
3.3.1 Analyzer
To install the analyzer at the intended location, proceed as follows:
1. Fit the edge covers (with GFR housing only).
2. Fasten the fastening clips on the analyzer.
a0016672
Fig. 3: Collecting vessel
1 Connection for level measurement
2 Ventilation
3 Sample supply to analyzer, connection
for hose with ID 3.2 mm (0.13")
4 Connecting cable of electric agitator
5 Sample supply, connection for hose with
ID 3.2 mm (0.13")
6 Sample overflow, connection for hose
with ID 10 mm (0.39")
a0016671
Fig. 4: Dimensions of collecting vessel and base plate
Collecting vessel (at outside of analyzer, with level measurement)
Connection hose ID 3.2 mm (1/8 inch)
Customer collecting vessel
Connection (affix at the level of the peristaltic pumps) hose ID 1.6 mm (1/16 inch)
Max. distance from the collecting vessel to analyzer 1 m (3.3 ft)
Max. high difference from the collecting vessel to analyzer 0.5 m (1.6 ft)

Installation Stamolys CA71CODcr
10 Endress+Hauser
3. Mount the analyzer and secure it to a vibration-free wall using screws (Ø6 mm / 0.24"). The
fastening clips make sure that the necessary distance to the wall is observed for ventilation
purposes.
For the installation dimensions, please see the previous chapter.
4. Using a spirit level, check that the cabinet is hanging straight.
5. Lay the drain pipe for the reaction products. Where possible, use solid pipes (PE, internal
diameter 1" with 3% incline).
6. Route the drain hoses (PTFE 4/6 mm) through the device floor to the outside.
7. Connect the drain hoses (PTFE 4/6 mm) to the connections marked for chromate waste, rinse
waste and emergency overflow.
8. 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!
9. 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.
10. Secure the hose cases 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.
11. Connect the sample supply.
12. Connect the tubes from canisters containing reagents and standards to the following nozzles:
a0012421
Fig. 5: Valves and valve hoses
1
2
3
4
5
6
7
8
9
10
11
Sample
Standard (30, 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

Stamolys CA71CODcr Installation
Endress+Hauser 11
3.3.2 Collecting vessel (optional)
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 →ä18
3.4 Installation examples
3.4.1 Stamoclean CAT221
A complete measuring system comprises:
• A CAT221 filter system
• An agitated collecting vessel
• A CA71CODcr analyzer
• A sample pump or pressurized sample supply
• A compressor or compressed air line
Canister Tube designation (mark)
Sample
Reagent R1
Reagent R2
Standard
0 mg/l O2standard
P
none (PTFE hose)
R2
S
0
a0013925
Fig. 8: Complete measuring system
1
2
3
4
Backwash filter
Compressor or compressed air line
Sampling pump or sample pressure line
Sample outlet
5
6
7
8
Agitated collecting vessel
Overflow
Analyzer
Sample line to analyzer
6
753
2
1
4
8

Installation Stamolys CA71CODcr
12 Endress+Hauser
3.4.2 No filter used
A complete measuring system comprises:
• A sample pump with backwash function
• An agitated collecting vessel
• A CA71CODcr analyzer
3.5 Post-installation check
• After installation, check that all connections are secure and leaktight.
• Ensure that the hoses cannot be removed without effort.
• Check all hoses for damage.
a0016626-1
Fig. 9: Complete measuring system
1
2
3
Sample pump with backwash function
Sample line to analyzer
Analyzer
4
5
6
Overflow
Agitated collecting vessel
Sample

Stamolys CA71CODcr Wiring
Endress+Hauser 13
4 Wiring
4.1 Electrical connection
WARNING
!
Device is energized
Inappropriate connection can cause serious injuries or death
►The electrical connection may only be established by an electrical technician.
►The electrical technician must have read and understood these Operating Instructions and must
follow the instructions they contain.
►Before beginning the connection work, ensure that no voltage is applied to the cables.
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 (→å10, 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. 10: Folding out the frame
1 Allen screws AF 6
2 Terminal block
NOTICE
The device does not have a mains switch
►You must install the device near an easily accessible fused socket.

Wiring Stamolys CA71CODcr
14 Endress+Hauser
4.1.2 Terminal assignment
CAUTION
!
The diagram shown (→å11) 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 (→å12) to connect your
analyzer!
a0012456
Fig. 11: Example of the connection sticker
a0001372
Fig. 12: Analyzer from above (open/folded out)
1 Connection compartment sticker
2 Printed circuit board with terminal block
3 Backside of analyzer
7
6
5
4
L2
L2
N
L1
L1
PE
PE
ACMOTOR
ACMOTOR
F2
F2
F1
F1
ACMotor
T0.1A
ACMotor
T0.1A
Elektronik
Electronics
T0.5A
Elektronik
Electronics
T0.5A
3
2
1
L
N
PE
PE
NETZ
MAINS
NETZ
MAINS
Klemmenführen auch bei ausgeschaltetem Gerät Spannung !!!
Klemmenführen auch bei ausgeschaltetem Gerät Spannung !!!
Terminalsvoltage to ground even when the unit is switched off !!!
Terminalsvoltage to ground even when the unit is switched off !!!
BU
BU
YE
YE
RD
RD
GN/YE
GN/YE
80
80
75
75
70
70
63
63
57
57
39
39
27
27
21
21
15
15
64
64
58
58
40
40
28
28
22
22
16
16
65
65
79
79
74
74
69
69
62
62
56
56
38
38
26
26
20
20
14
14
78
78
73
73
68
68
61
61
55
55
37
37
25
25
19
19
13
13
77
77
72
72
67
67
60
60
54
54
36
36
24
24
18
18
12
12
76
76
71
71
66
66
59
59
53
53
35
35
23
23
17
17
11
11
RELAIS/ Relay:
max.Last / load: 2A bei / at 115/230VAC, 1A bei / at 30V DC
RELAIS/Relay:
max.Last/load: 2A bei / at 115/230V AC, 1A bei/at 30V DC
OR
OR
BK
BK
RD
RD
YE
YE
V3
V3
V2
V2
V1
V1
0V
0V
keineProbe
Nosample
keineProbe
Nosample
0V
0V
0V
0V
fx
fx
fx
fx
n.b.
n.c.
n.b.
n.c.
-17V
-17V
+17V
+17V
Schirm
Screen
Schirm
Screen
MP5
MP5
MP6
MP6
Schirm
Shield
Schirm
Shield
Reserve
Reserve
Mess2
Meas2
Mess2
Meas2
+24V
+24V
I2+
I2+
I1+
I1+
I2-
I2-
I1-
I1-
Photometer
Photometer
SCHRITTMOTOR
SCHRITTMOTOR
LECKF.
LECKF.
ALARM2
ALARM2
OPTION
OPTION
STÖRUNG
STÖRUNG
ALARM1
ALARM1
F5
F5
F4
F4
M0.2A
M0.2 A
M0.2A
M0.2 A
COM
NC
NO
COM
NC
NO
Kanal1 Kanal 2
Channel2
ALARM2
ALARM2
ALARM1
ALARM1
Photometer+17V
Photometer+17V
Photometer-17V
Photometer-17V
n.b.
n.c.
n.b.
n.c.
BN
BN
WH
WH
YE
YE
GY
GY
BK
BK
GN
GN
BK
BK
YE
YE
GN
GN
BU
BU
BN
BN
AnalogOut
0/4-20mA
STEPMOTOR
STEPMOTOR
LEAKS.
LEAKS.
0V
0V
WH
Channel1
ERROR
ERROR
V4
V4
31
31
30
30
29
29
0V
0V
n.b.
n.c.
n.b.
n.c.
Status
Status
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
Schirm
Shield
1
23

Stamolys CA71CODcr Wiring
Endress+Hauser 15
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 CA71 to the
corresponding terminals of 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.
Function Designation Terminal
One-channel version
Mains
~3
~2
PE1)
1) Brass screw with bolt at top right in the connection compartment (marked with *)
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
Unassigned
COM 22
NC 21
NO 20
Analog output 1
0/4 to 20 mA
+36
–35
Screen 37
Sample conditioning
remote control
Input 57
0 V 53

Wiring Stamolys CA71CODcr
16 Endress+Hauser
4.2 Signal connection
4.2.1 Shielding 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 shield out of the
interference suppressor and connect it to PE (brass screw with bolt, top right in the connection
compartment) (→å13).
4.2.2 One-channel version
a0001746
Fig. 13: Interference protection of the signal cable
1 Cable shield (to PE in connection compartment)
2 Signal cable
3 Interference suppressor
4 Cable cores of the signal cable
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
3
4

Stamolys CA71CODcr Wiring
Endress+Hauser 17
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
The results (measured value+engineering unit) are output in the "Data memory-Measured values"
menu.
The calibration results (measured value+engineering unit) are output in the "Data
memory-Calibration factors" menu.
A null modem cable is required (crossed wires for RxD/TxD and RTS/CTS).
It is not possible to configure the interface at the analyzer.
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)
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
3TxD RxD2
2RxD TxD3
8 CTS RTS 7
CTS 8
5GND GND5
Software protocol:
Output format:
9600 baud, 8 data bits, 1 stop bit, no parity (9600, N, 8, 1)
ASCII

Wiring Stamolys CA71CODcr
18 Endress+Hauser
4.5 Connecting the collecting vessel
1. Disconnect the analyzer from the mains.
2. Fold out the frame (→ä13).
3. Guide the cable of the level measurement unit into the analyzer and connect the connecting
cables as follows:
– Black cable (BK) in terminal 58
– Yellow cable (YE) in terminal 57
– White cable (WH) in terminal 54
– Green cable (GN) in terminal 53
4. Fold the frame of the analyzer back in.
5. Connect the analyzer and the agitator of the collecting vessel to the mains.
6. Set the agitator speed to 400 - 500 rpm.

Stamolys CA71CODcr Wiring
Endress+Hauser 19
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
analyzer to the mains. Wait until the display shows "0 mA".
2. Check on your PLC, PCS or you data logger whether the current value is the same.
3. Press the Fkey. This allows you to 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 present:
a. Check the terminal assignment for analog output 1 or 2.
b. Disconnect the analog outputs from your PLC, DCS or data logger and repeat steps 1-4 but
this time measure the current values at the terminals of the analyzer and not at the PLC,
DSC or data logger.
If these current values are correct, please check your PLC, DCS, the data logger and/or the
electrical cables.
Device status and specifications Note
Is the analyzer 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 shielded 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 crossovers?
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 analog output?
Current output test See procedure below

Operation Stamolys CA71CODcr
20 Endress+Hauser
5Operation
5.1 Display and operating elements
a0012457
Fig. 14: Display and operating elements
1 LED display (measured value)
2 LC display (status)
3 Serial interface RS 232
4 Operating keys and control LEDs
5 Temperature indicators of the heating element
5.2 Local operation
The operating keys and the integrated indicator LEDs have the following functions:
RS 232
M
CE
EK
1
53
4
2
Key Key function Indicator LED function
H– “Auto measuring” option
– back to the main menu from all sub-menus
Alarm value 1 exceeded
K– backwards in the sub-menu
(horizontal, see Appendix,)
Alarm value 2 exceeded
V– backwards in the main menu (vertical)
–Increasevalue
Measuring range exceeded
W– forwards in the main menu (vertical)
– Reduce value
Measuring range undershot
F– Select option
– Adopt value, forwards in the sub-menu (horizontal)1)
1) The number of decimal places can be changed by pressing the Fkey and the Vor Wkey simultaneously.
Retrieve error message
J– Selection in the sub-menu
– Select sign +/-
Cleaning interval running