Kobold ACM-1 User manual

Kobold ACM-1
Transmitter/controller for conductivity, TDS,
resistance, temperature and standard signals
Operating instructions

WARNING:
A sudden malfunction of the instrument, or one of the sensors connected to it,
could potentially result in dangerous overdosing! Suitable preventive measures
must be in place to prevent this from happening.
Note:
Please read these Operating Instructions before placing the instrument in
operation. Keep the manual in a place which is accessible to all users at all times.
Resetting the brightness of the LC display:
If the brightness setting has been adjusted so that the display text is no longer
legible, the basic setting can be restored as follows:
✱Switch off the supply voltage.
✱Switch on the supply voltage and immediately press and hold the and
keys simultaneously.
Operator language selection:
✱Press the key for longer than 3 seconds.
✱Select the appropriate language with the and keys.
✱Briefly press the key.
EXIT
PGM

Contents
1 Typographical conventions ...................................................... 7
1.1 Warning signs ..............................................................................................7
1.2 Reference signs ...........................................................................................7
2 Description ................................................................................ 8
3 Instrument identification ........................................................ 10
3.1 Nameplate ..................................................................................................10
3.2 Type designation ........................................................................................10
3.3 Accessories (included in delivery) ..............................................................12
3.4 Accessories (optional) ................................................................................12
4 Mounting .................................................................................. 13
4.1 General information ....................................................................................13
4.2 Dimensions ................................................................................................13
5 Installation ............................................................................... 14
5.1 Installation instructions ..............................................................................14
5.2 Electrical isolation ......................................................................................15
5.3 Connection .................................................................................................16
6 Operation ................................................................................. 20
6.1 Controls ......................................................................................................20
6.2 Display .......................................................................................................21
6.3 Principle of operation .................................................................................22
6.4 Measuring mode ........................................................................................25
6.5 Input/output information ............................................................................26
6.6 User level ...................................................................................................31
6.7 Administrator level .....................................................................................32
6.8 MANUAL mode / Simulation mode ............................................................35
6.9 HOLD mode ...............................................................................................38
7 Commissioning ....................................................................... 40
7.1 Getting started ...........................................................................................40
7.2 Setting examples .......................................................................................41
8 Calibrating a conductivity cell ............................................... 47
8.1 Notes ..........................................................................................................47
8.2 General information ....................................................................................47
8.3 Calibration of the temperature coefficient of the sample medium .............48
8.4 Calibrating the relative cell constant ..........................................................51

Contents
9 Calibrating a sensor with a standard signal ......................... 53
9.1 General information ....................................................................................53
9.2 Linear operating mode ...............................................................................55
9.3 pH operating mode ....................................................................................59
9.4 Conductivity operating mode .....................................................................63
9.5 Concentration operating mode ..................................................................69
9.6 Chlorine measurement operating mode,
pH-compensated 71
10 Calibration logbook ................................................................ 73
10.1 General information ....................................................................................73
11 Controller ................................................................................. 74
11.1 General information ....................................................................................74
11.2 Controller functions ....................................................................................74
11.3 Software controllers and outputs ...............................................................75
11.4 Configuration of higher order controllers ...................................................77
11.5 Parameter sets ...........................................................................................77
11.6 Sample configurations ...............................................................................78
12 Setup program ........................................................................ 80
12.1 Configurable parameters ...........................................................................80
12.2 Documenting the instrument configuration ................................................81
12.3 Special features for "Datalogger" ..............................................................82
13 Eliminating faults and malfunctions ...................................... 84
14 Technical data ......................................................................... 86
14.1 Approvals/marks of conformity ..................................................................88
15 Retrofitting optional boards ................................................... 89
16 Appendix ..................................................................................94
16.1Glossary .....................................................................................................94
16.2Parameters of the User level ....................................................................106
15.1Identifying an optional board .....................................................................89
15.2Removing a plug-in module .......................................................................91
15.3Inserting a plug-in module .........................................................................91
15.4Retrofitting optional boards (field housing) ................................................92
17 Disposal....................................................................................118
18 EU Declaration of Conformance.............................................119
19 UK Declaration of Conformance...........................................120

5
Index
1-point calibration - pH 59
2-point calibration97
2-point calibration - pH 61
A
Accessories 12
Administrator 32
B
Basic setting 32
Binary inputs and outputs
States 29
C
Calibration
Logbook 73
pH, 2-point 61
Standard signal 53
Standard signal, options 54
Calibration release 35
Cell constant 51–52
Configurable parameters 80
Controller
"Higher order" switching functions 74
"Simple" switching functions 74
Configuration of "higher order" controllers
77
General information 74
Parameter sets 77
Setting example, limit monitoring 78
Controller functions 74
Customer settings 106
D
Datalogger
Special features 82
Date of manufacture 10
Delete 35
Display 21
E
Electrical isolation 15
F
Factory settings 106
G
Getting started 40
H
HOLD mode 38
I
Info
Hardware 30
Instrument 31
Installation position 13
K
Key combinations 26
L
Language selection 2
Limit functions99
M
Manual 30
MANUAL mode 35
Analog outputs 37
Binary outputs 37
Controller 36
Deactivation 39
Switching outputs 36
Manual mode overview 30
Menu
Customer specs. 27
Min/max values 27–28
Mounting location 13
O
Optional inputs
Current values 29
Output 28
Output display 28
P
Parameter overview106
Password 32
Ph. Eur. 102
Principle 22
Principle of operation 26
Purified water102
R
Rapid access 26
Reference signs 7
Reset display brightness 2
S
Setting the operator language 2
Setup program 80

6
Simulation mode 35
Simulation of binary outputs 37
States 29
Sunlight 13
T
TDS measurement102
Temperature compensation97–98
U
Ultra-pure water101
User 31
User data 27
USP101
W
Warning signs 7
Wash timer 100
Washing contact100
Z
Zero point calibration 97
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you have
purchased. If you need an instruction manual that corresponds to the purchased
product version, you can request it from us free of charge by email
([e-mail]) in PDF format, specifying the relevant invoice numberand serial
number. If you wish, the operating instructions can also be sent to you by post in paper
form against an applicable postage fee.

7
1 Typographical conventions
1.1 Warning signs
1.2 Reference signs
Danger
This symbol is used when there may be danger to personnel if the
instructions are ignored or not followed correctly!
Caution
This symbol is used when there may be damage to equipment or data if the
instructions are ignored or not followed correctly!
Note
This symbol is used to draw your special attention to a remark.
abc1Footnote
Footnotes are remarks that refer to specific points in the text. Footnotes
consist of two parts:
A marker in the text and the footnote text.
The markers in the text are arranged as consecutive superscript numbers.
✱Instruction
This symbol indicates the description of an action to be performed.
The individual steps are marked by this asterisk.
Example:
✱Briefly press the key.

8
2 Description
Inputs/outputs In addition to the main input (conductivity, TDS, resistance) and the secondary
input (temperature compensation), the basic instrument alone has two binary
inputs, two relays, one power supply for external sensors and a setup
interface.
Input signals can be shown as numbers or as a bar graph on the graphic
display. Parameters are displayed in plain text for easily comprehensible and
reliable operation.
Optional Three further slots can be fitted with extensive additional configurable inputs
and outputs and interfaces.
Application The instrument is suitable, for example, for displaying, measuring and
controlling:
- Conductivity, TDS and resistance.
- Free chlorine, chlorine dioxide, ozone, hydrogen peroxide and peracetic
acid, in combination with suitable sensors.
-(Hydrostatic) liquid levels with 2-wiretransmitters (level probes)
-Flow rate in conjunction with transmitters
- Two temperature measuring points.
- Most sensors and transmitters that output standard signals (0 - 10 V or 
0(4) - 20 mA).
Because temperature measurement is integrated, temperature compensation
takes place quickly and precisely, which is particularly important for many
analytical measurements.
Special features - Display: mS/cm, μS/cm, MOhm x cm, mg/l, pH, mV, etc. Special settings
are also possible with the setup program
- Configurable display text (operator level)
- A choice of display visualizations: large numbers, bar graph or tendency
Power supply
Optional board 2
Optional board 1
Optional board 3
2 Binary inputs
1 Main input
(conductivity, TDS and resistance)
1 Analog input
(compensation)
Setup interface
2 Relay (changeover)
Power supply
for a 2-wire transmitter

9
2 Description
(trend) display
- Four limit controllers
- Integrated calibration routines: with 1, 2 and 3 points
- Math and logic module (optional)
- Calibration logbook
- Three optional slots
- Selectable languages: English, German, French, etc.
- Setup program provides: convenient programming, system documentation
- RS422/485 interface (optional)
- Profibus-DP interface (optional)

10
3 Instrument identification
3.1Nameplate
on the transmitter
The date of manufacture is encoded in the "F No." (serial number):
1122 means year of manufacture 2011 / calendar week 22
F-Nr.: 0168287401012190001
VARTN: 20/00574309
AC/DC 20..30V 48..63Hz
≤13VA
F-Nr.: 0168287401012190001
VARTN: 20/00574309
AC/DC 20..30V
48..63Hz
≤13VA
ACM-1E24000

11
3 Instrument identification
3.2Type designation
Model Version Housing Power supply Option 1
(Optional board)
Option 2
(Optional board)
Option 3
(Optional board) Special
ACM
Evaluation
electronics
conducti-
vity/
specific
resistance/
TDS
1= Compact-Line
(new)
Input:
1x conductivity/
specific resis-
tance/TDS
1x temperature/
standard signal,
2x binary input
sensor supply:
2-wire
transmitter,
2 relays
E= for panel
mounting
F= Field
housing
S= Field
housing
with wall
mounting
bracket
R= Field
housing
with pipe
mounting
bracket
1= 110... 240 VAC
-15%/+10%,
48 ... 63 Hz
2= 20 ... 30 VAC/DC,
48 ... 63 Hz
4= analogue output
0(4)-20 mA,
0(2)-10 V
(Standard)
0= without
1= universal input
(Pt100, Pt1000,
resistance,
current, voltage)
2= 1 relay
(changeover
contact)
3= 2 relays <
(NO with
common pin)
4= analogue output
0(4)-20 mA,
0(2)-10 V
5= 2 Photo-Mos
relay switch
(0.2 A)
6= 1 semiconductor
relay TRIAC (1A)
7= 1 power supply
4.85 V (e. g. for
ISFET sensor)
8= 1 power supply
12 VDC (e. g. for
inductive
proximity switch)
0= without
1= universal input
(Pt100, Pt1000,
resistance,
current, voltage)
2= 1 relay
(changeover
contact)
4= analogue
output
0(4)-20 mA,
0(2)-10 V
5= 2 Photo-Mos
relay switch
(0.2 A)
6= 1 semiconductor
relay TRIAC (1A)
7= 1 power supply
4.85 V (e. g. for
ISFET sensor)
8= 1 power supply
12 VDC (e. g. for
inductive
proximity switch)
0= without
1= universal input
(Pt100, Pt1000,
resistance,
current, voltage)
2= 1 relay
(changeover
contact)
3= 2 Relais
(NO with
common pin)
4= analogue
output
0(4)-20 mA,
0(2)-10 V
5= 2 Photo-Mos
relay switch
(0.2 A)
6= 1 semiconductor
relay TRIAC (1A)
7= 1 power supply
4.85 V (e. g. for
ISFET sensor)
8= 1 power supply
12 VDC (e. g. for
inductive
proximity switch)
S= Interface
RS 422/485
D= Data logger with
interface
RS 4851)
P= Interface
Profibus DP
0= without
(factory set)
Y= adjusted
according
to
customer
specification
Order Details (Example: ACM-1 E 1 0 0 0 Y)
1) The readout of data is only possible with the PC setup software! Note: All languages are available on the device side and can be changes by the customer at
any time. The factory default setting of a language (except for "German") entail additional costs.

3 Instrument identification
12
3.3 Accessories (included in delivery)
1For basic type extension 01 only (in the panel enclosure)
2For basic type extension 05 only (in the surface-mounted enclosure)
3.4 Accessories (optional)
4 x fastening elements, complete1
3 x CON plug-in link1
3 x jumper wire2
1 x seal for panel1
1 x fastening elements, complete2
- 1 x DIN rail fastening left
- 1 x DIN rail fastening right
- 3 x wall mount
- 3 x fastening screw
Type Sales No.
Holder for C railACM-Halt
PC setup softwareACM-Soft
PC interface cable including USB/TTL converter and two adapters 
(USB connecting cable)
ACM-Int
Optional board Code Sales No.
Analog input (universal)1APM-1000001
Relay (1 x changeover)2APM-1000002
Relay (2 x NO)3APM-1000003
Analog output4APM-1000004
Two MosFET semiconductor switches5APM-1000005
Semiconductor relay 1 A6APM-1000006
Supply voltage output +/- 5 V DC (e.g.for ISFET)7APM-1000007
Supply voltage output 12 V DC (e.g. for inductive proximity switch)8APM-1000008
Interface - RS422/48510APM-100000S
Datalogger with RS485 interface11APM-100000D
Profibus-DP interface12APM-100000P

13
4 Mounting
4.1 General
Mounting
location
Find a location that ensures easy accessibility for the later calibration.
The fastening must be secure and must ensure low vibration for the
instrument.
Avoid direct sunlight!
Permissible ambient temperature at the installation location: -10 - 55°C with
max. 95% rel. humidity, no condensation.
Installation
position
The instrument can be mounted in any position.
4.2 Dimensions
Close mounting
Minimum spacing of panel cutouts Horizontal Vertical
Without setup connector: 30mm 11mm
With setup connector (see arrow): 65mm 11mm
4.2.1Panel mounting
72,5
94, 5
10 4 , 5
62
15
13 7 117
APM-1
EXIT
PGM

4.2.2Field housing

14
5 Installation
5.1 Installation instructions
❏The choice of cable, the installation and the electrical connection must
conform to the requirements of VDE 0100 “Regulations on the Installation
of Power Circuits with Nominal Voltages below 1000 V” and the relevant
local regulations
❏If contact with live parts is possible when working on the device, it must be
completely disconnected from the electrical supply.
❏The load circuits must be fused for the maximum load currents in each case
to prevent the relay contacts from becoming welded in the event of a short
circuit.
❏Electromagnetic compatibility meets the requirements of EN 61326.
❏Lay the input, output, and supply lines so they are physically separated
from each other and are not parallel.
❏Use twisted and shielded probe cables. If possible, do not lay these cables
close to components or cables through which current is flowing. Ground
the shielding at one end.
❏The probe cables must have an uninterrupted run (do not route them via 
terminal blocks or similar arrangements).
❏No other consumers can be connected to the power terminals of the
instrument.
❏The instrument is not suitable for installation in areas with an explosion
hazard.
❏Apart from faulty installation, incorrect settings on the instrument may also
affect the proper functioning of the subsequent process or lead to damage.
You should therefore always provide safety equipment that is independent
of the instrument and it should only be possible for qualified personnel to
make settings.
Mounting information for conductor cross-sections and ferrules
The electrical connection must only be performed by 
qualified personnel!
Ferrule Conductor cross-section Minimum length of ferrule or
stripping
Minimum Maximum
Without ferrule 0.34mm2.2.5mm
2. 10mm (stripping)
Without collar 0.25mm 2.5mm2. 10mm
With collar up to 1.5mm² 0.25mm2.1.5mm
2. 10mm
Twin, with collar 0.25mm2.1.5mm
2. 12mm

15
5 Installation
5.2 Electrical isolation
3700 V AC 1
Setup interface
Power supply
Power supply
for a 2-wire transmitter
3700 V AC
Semiconductor relay
Triac
Binary inputs
30 V AC
50 V DC
Continuous outputs
30 V AC
50 V DC
Input 2 (option)
3700 V AC
Relay outputs
Secondary input (Pt100/Pt1000)
Main input cond. conductivity
30 V AC
50 V DC
Photo MOS relay
Extra-low voltage
1500 V AC
30 V AC
50 V DC
Interface
RS422 7 485
Profibus DP
Datalogger
Power supply
for ISFET sensor

5 Installation
16
5.3 Connection
5.3.1 Terminal assignment
5.3.2 Optional board (row 1, slot a, b or c)
(1) Row 1 (a) Option 1 (b) Option 2 (c) Option 3
(2) Row 2 Main input board
(conductivity / resistance / temperature / standard signal)
(3) Row 3 PSU board 
(power supply / 2x relays)
1
2
3
4
1 2 3 4
5 6 7 8
6 7 8 9
10
9
10 11 12
4
L1(L+)
5
6
8
9
11
12
13
15
16
17
N(L+)
11
12
13
14
15
(a)
(b)(c)
(1)
(3)
(2)
Function Symbol Terminal
for slot (a)
Te r m i n a l
for slot (b)
Term i nal
for slot (c)
Analog input
Temperature sensor 
in a two-wire circuit
Pt100 or Pt1000
2
4
6
8
10
12
Temperature sensor 
in a three-wire circuit
Pt100 or Pt1000
2
3
4
6
7
8
10
11
12
Resistance transmitter 2
3
4
6
7
8
10
11
12
Electrical current 3
4
7
8
11
12
J
J
E
S
A
+
-

17
5 Installation
Function Symbol Terminal
for slot (a)
Te r m i n a l
for slot (b)
Term i nal
for slot (c)
Voltage
0(2) - 10 V
1
2
5
6
9
10
Voltage
0 - 1 V
2
3
6
7
10
11
Continuous output
Current or voltage 2
3
6
7
10
11
Modbus interface
RS422 1
2
3
4
5
6
7
8
9
10
11
12
RS485 3
4
7
8
11
12
Profibus interface
1
2
3
4
5
6
7
8
9
10
11
12
Datalogger interface
RS485 2
3
6
7
10
11
Relay (1x changeover)
K3 1
2
3
K4 5
6
7
K5 9
10
11
Relay (2x NO, common pin)
K3 1
2
K6 3
K5 9
10
K8 11
Triac (1 A)
K3 2
3
K4 6
7
K5 10
11
Photo MOS relay (0.2 A)
K3 1
2
K4 5
6
K5 9
10
K6 3
4
K7 7
8
K8 11
12
+
-
+
-
+
-
RxD-
RxD+
TxD-
TxD+
RxD/TxD-
RxD/TxD+
RxD/TxD-P(B)
VP(+5V)
DGND
RxD/TxD-N(A)
RxD/TxD-
RxD/TxD+
S
P
O
S
P
S

5 Installation
18
5.3.3 Main board (row 2)
Function Symbol Terminal
Standard signal input for electrical current
0(4) - 20 mA
3
4
Standard signal input 
for voltage
0(2) - 10 V or 10 - 0(2) V
1
4
Temperature sensor 
in a two-wire circuit
Pt100 or Pt1000
2
3
4
Temperature sensor 
in a three-wire circuit
Pt100 or Pt1000
2
3
4
Resistance transmitter 4
3
2
Conductivity cell
Conductivity cell (2-electrode system)
Terminals 6+7 and 8+9 can be bridged on the instrument;
2-wire cable routing up to the head of the conductivity cell.
For concentric cells, terminal 6 must be connected with the outer 
electrode.
6
7
8
9
Conductivity cell (2-electrode system)
Wiring for highest accuracy;
4-wire cable routing to the head of the conductivity cell.
For concentric cells, terminal 6 must be connected with the outer 
electrode.
6
7
8
9
Conductivity cell (4-electrode system)
6 - Outer electrode 1
7 - Inner electrode 1
8 - Inner electrode 2
9 - Outer electrode 2
6
7
8
9
Shield connection
Conductivity cell 10 GND
Binary inputs
Binary input 1 12+
14
Binary input 2 13+
14
+
-
+
-
J
E
S
A

19
5 Installation
5.3.4PSU board (row 3)
FunctionSymbolTerminal
Power supply for ACM-1
Power supply:
AC 110 - 240 V
Power supply:
AC/DC 20 - 30 V
1 L1 (L+)
2 N (L-)
n.c. 4
5
6
Supply voltage for external 2-wire transmitter
24 V DC (-15 / +20%) 8 L+
9 L
Relay 1
Switching output K1
(floating)
11
12
13
Relay 2
Switching output K2
(floating)
15
16
17
S
P
O
S
P
O

20
6 Operation
6.1 Controls
Operation via the instrument keypad is described below.
Instrument operation via th e optional set-up program, See section 12 "Setup
program", page 80.
(1) Measurement unit
(2) Temperature
(3) Operating mode
(4) Measured value
(5) key Increase numerical value / Forward selection
(6) key Decrease numerical value / Forward selection
(7) key Change level / Forward selection / Conrm selection
(8) key Cancel entry / Exit level
(8)
(5)
(2)
(4)
(3)
(1)
(6)
(7)
PGM
EXIT