CONNECTRIC Motrona AX 345 User manual

control – motion – interface
motrona GmbH
Zwischen den Wegen 32
78239 Rielasingen - Germany
Tel. [phone]
Fax [phone]
[email protected]
www.motrona.com
AX34509a_e.doc / Aug-10 Page 1 / 38
AX 345, AX 347, AX 348
Process Indicators with
Two Analogue Inputs and Calculations
AX 345
Process Indicator, Display only
AX 346: Process Indicator with Analogue Outputs 0 - 10 V und 0/4 – 20 mA
(see separate manual)
AX 347: Process Indicator with 2 Presets and Optocoupler Outputs
AX 348: Process Indicator with Serial RS232 / RS485 Interface
•Two analogue inputs with independent scaling, each +/- 10V or 0/4 – 20 mA
•Operating modes for display of input A or input B or the combinations
A + B, A - B, A x B and A : B
•Useful supplementary functions like Tare function, programmable averaging
functions, programmable linearization etc.
•Power supply 115/230 VAC and 17-30 VDC in the same unit
•Aux. output 24 V DC / 100 mA for sensor supply
Operating Instructions

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Safety Instructions
•This manual is an essential part of the unit and contains important hints about
function, correct handling and commissioning. Non-observance can result in
damage to the unit or the machine or even in injury to persons using the
equipment!
•The unit must only be installed, connected and activated by a qualified electrician
•It is a must to observe all general and also all country-specific and application-
specific safety standards
•When this unit is used with applications where failure or mal-operation could cause
damage to a machine or hazard to the operating staff, it is indispensable to meet
effective precautions in order to avoid such consequences
•Regarding installation, wiring, environmental conditions, screening of cables and
earthing, you must follow the general standards of industrial automation industry
•- Errors and omissions excepted –
Version: Description:
AX34507a_hk/kk/04/2007 First edition
AX34507b_hk/kk/10/2007 CMD key commands added
AX34509a_kk/hk/08/2010 Over-/underflow control added
AX347: programmable output assignment, AX38: new model

AX34509a_e.doc / Aug-10 Page 3 / 38
Table of Contents
1. Introduction ............................................................................................................................................ 4
2. Terminal Assignments............................................................................................................................ 5
2.1. Power supply ................................................................................................................................6
2.2. Aux. voltage output ......................................................................................................................6
2.3. Analogue measuring inputs .........................................................................................................6
2.4. Optocoupler transistor outputs (model AX 347 only)...................................................................7
2.5. Serial RS232 / RS485 interface (AX 348 only).............................................................................8
3. Jumper settings...................................................................................................................................... 9
4. How to Operate the Keys ..................................................................................................................... 11
4.1. Normal display state ..................................................................................................................11
4.2. Parameter settings .....................................................................................................................12
4.2.1. How to select a parameter ..................................................................................................... 12
4.2.2. How to change parameter settings ........................................................................................ 12
4.2.3. How to store settings ............................................................................................................. 12
4.2.4. Time-out function.................................................................................................................... 12
4.3. Teach operation..........................................................................................................................13
4.4. Set all parameters to “Default“ .................................................................................................13
4.5. Code Locking of the Keypad.......................................................................................................13
5. The Parameter Menu............................................................................................................................ 14
6. Setting of Parameters........................................................................................................................... 16
6.1. Basic Parameters........................................................................................................................16
6.2. Operational parameters..............................................................................................................17
6.3. Modes of operation ....................................................................................................................18
6.3.1. Single mode (input A only)......................................................................................................18
6.3.2. Dual Mode (Inputs A and B separately).................................................................................. 19
6.3.3. Combined Modes [A + B], [A - B], [A : B], [A x B] .................................................................... 20
6.4. Additional settings for the Preselections (model AX 347 only).................................................21
6.4.1. Basic settings for the Presets: ................................................................................................ 21
6.4.2. Characteristics of the switching hysteresis............................................................................ 22
6.4.3. Operational settings for presets: ............................................................................................ 23
6.4.4. Actual switching state of the outputs: ................................................................................... 23
6.4.5. Response time of switching outputs ...................................................................................... 24
6.5. Additional Parameters for the Serial Interface (model AX 348 only)........................................25
6.5.1. Communication settings in the Basic Menu:.......................................................................... 25
6.5.2. Operational Parameters for configuration of the interface: ................................................... 26
6.5.3. PC-Mode ................................................................................................................................. 27
6.5.4. Printer Mode ........................................................................................................................... 28
7. Commissioning ..................................................................................................................................... 29
8. Special Functions.................................................................................................................................. 30
8.1. Tare / Offset function .................................................................................................................30
8.2. Linearization ...............................................................................................................................30
8.3. Manual input or „Teaching“ of the interpolation points ...........................................................32
8.4. Overflow and Underflow Control ...............................................................................................34
9. Technical Specifications....................................................................................................................... 35
9.1. Dimensions .................................................................................................................................35
9.2. Technical data ............................................................................................................................36
9.3. Commissioning Form ..................................................................................................................37

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1. Introduction
Some of the general demands to an up-to-date process controller for automation industry are
always high flexibility, combined with easy and simple operability.
Many applications require two separate analogue inputs for use with single or combined
operation.
Also it may be important to display and evaluate both, linear and non-linear analogue inputs at
an acceptable accuracy, which requires programmable linearization functions.
Process controllers of series AX 345 - 348 have been designed for this kind of requirements.
Model AX 345 provides display function only.
Model AX 346 provides additional analogue outputs +/-10 volts and 0/4 - 20 mA
(a separate manual is available for the AX346 model)
Model AX347 provides two additional Preselections with Optocoupler outputs
Model AX 348 provides additional serial communication via RS232 / RS485 interface
All other functions within this controller family are fully similar.
The present operating instructions are valid for models AX 345, AX347 and AX 348 only.
Separate operating instructions are available for model AX 346

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2. Terminal Assignments
AX 345:
Basic model
1
GND
2
17-30VDCin
345678910
GND
230VAC
115
VAC
0
VAC
InputA
InputB
AGND
GND
+24VDCout
n.c.
PE
optional, see *)
n.c.
n.c.
AX 347:
Model with two presets
and optocoupler outputs
1
GND
2
17-30VDCin
345678910
GND
230VAC
115
VAC
0
VAC
InputA
InputB
AGND
GND
+24VDCout
COM+
OUT1
OUT2
PE
optional, see *)
AX 348:
Model with serial
RS232 / RS485 interface
1
GND
2
17-30VDCin
345678910
GND
230VAC
115
VAC
0
VAC
InputA
InputB
AGND
GND
+24VDCout
PE
optional, siehe *)
GND
RxD,
A(+)
TxD,
B
(-)
*) The connection of PE is optional and not necessary for safety or for EMC.
However, with some applications, it can be useful to ground the common potential of all signal lines

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•When using the earthing option, please be aware that all terminals marked GND or
AGND will be earthed.
•Multiple earthing on different positions of an installation may cause problems,
especially with poor overall performance of the whole earthing and screening system!
•The minus potential of analogue inputs is internally connected to the minus of the DC
supply. When you like to use current loops through several units, it is therefore
necessary to supply the units from either AC power or from several, potential-
separated DC sources.
2.1. Power supply
The unit accepts DC supply from 17 to 30 VDC with use of terminals 1 and 2. The consumption
depends on the level of the supply voltage (typical 80 mA at 30V or 130mA at 17V, plus current
taken from the aux. output).
For AC supply, terminals 0 VAC and 115 VAC or 230 VAC can be used. The total AC power is
approximately 7.5 VA.
2.2. Aux. voltage output
Terminal 7 provides an auxiliary output of 24 V DC / 100 mA max. for supply of sensors and
encoders. This is valid for AC supply and DC supply of the unit as well.
2.3. Analogue measuring inputs
There are two analogue inputs with common minus potential available (Input A and Input B).
Both refer to the AGND potential of terminal 5 which is internally connected to terminals 1, 6
and GND.
The analogue inputs can be configured for voltage input (+/- 10 V) or current input
(0 / 4 – 20 mA) by means of internal jumpers.
Ex factory, both inputs are always configured for current input.
(see section 3 for jumper settings)

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2.4. Optocoupler transistor outputs (model AX 347 only)
The outputs provide programmable switching characteristics and are potential-free. Please
connect terminal 8 (COM+) to the positive potential of the voltage you like to switch
(range 5V....35V).
You must not exceed the maximum output current of 150mA. Where you intend to switch
inductive loads, please provide filtering of the coil by means of external diodes.
Opto Opto
33 R
(8)
(9)
(10)
Com+ (5 ... 35 V)
Output 1 (max. 150 mA)
Output 2 (max. 150 mA)
33 R
Preset2 Preset1

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2.5. Serial RS232 / RS485 interface (AX 348 only)
Ex factory the unit is set to RS232 communication. This setting can be changed to RS485
(2-wire) by means of an internal DIL switch. To access the DIL switch, you must remove the
screw terminal connectors and the backplane. Then pull the board to the rear to remove the
PCB from the housing.
ON DIP
DIL-Switch
Removal of the back plane Location of the DIL switch
RS232:
ON
8
9
10 RxD
TxD
GND
RS485:
ON
8
9
10 A (+)
B (-)
GND
•Never set DIL switch positions 1 and 2 or DIL switch positions 3 and 4 to “ON”
at the same time!
•After setting the switch, shift the print carefully back to the housing and avoid
damage of the front pins for connection to the front keypad plate.
2
3
5
RxD RxD
TxDTxD
GND
Screen
PC
AX 348
9
(Sub-D-9)
10
8
Connection of the RS232 interface
PLC
AX 348
9
10
A(+)
B(-)
A(+)
B(-)
Connection of the RS485 interface

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3. Jumper settings
When your input signal is a current of 0-20 mA or 4-20 mA, there is no need to change jumper
settings and you can skip this section.
Where however you intend to use one or both inputs for voltage signals, you must change the
internal jumper settings correspondingly.
To access the jumpers, you have to disconnect the rear screw terminal strips, remove the back
plane from the unit and pull the PCB out of the housing
=jumper inseredscrew terminal strip
locking tab
factory preset
A=current, B =current
A= voltage, B = voltageA = voltage, B = currentA = current, B = voltage
A
(mA) (V) B (mA) (V)
A
(mA) B (mA)
A
(mA) (V) A (mA) (V)
A
(mA) (V)
B
(mA) (V) B (mA) (V)
B
(mA) (V)
A
(mA) A (mA)
A
(mA)
B
(mA) B (mA)
B
(mA)
Wrong jumper settings may cause serious damage to the unit!
After setting the jumpers, please shift the print carefully back to the housing, in order not
to damage the front pins for connection to the keypad plate.

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Current inputs are automatically scaled to an input range of 0/4 – 20 mA.
Voltage inputs use the standard range of +/- 10V.
You are free to measure voltages up to 120 volts DC by use of a remote resistance in series to
the input line (please observe applicable safety standards!). You can calculate the value from
the formula
Rx [ kΩ] = 3 x Vx [ V ] - 30
R = resistance value
V = input voltage
Example: Desired input = 100 volts:
R = [ 3 x 100 ] – 30 (kΩ) = 270 kΩ
With regard to the scaling procedure described later, the new maximum input with resistance
will work like a 10 volts signal with no resistance