Motrona AX 346 User manual

control – motion – interface
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AX 346
Process Indicator with Two Analogue Inputs,
Calculations and Programmable Analogue Output
AX 345 Process Indicator, Display only
(separate manual available)
AX 346: Process Indicator with Analogue Outputs 0 - 10 V und 0/4 – 20 mA
AX 347: Process Indicator with 2 Presets and Optocoupler Outputs
(separate manual available)
•Two analogue inputs with independent scaling, each +/- 10V or 0/4 – 20 mA
•Operating modes for display of input A, input B as well as combinations
A + B, A - B, A x B und A : B
•Fully programmable scaling and zero definitions
•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 VDC / 100 mA for sensor supply
Operating Instructions
ELEKTRO-TRADING sp. z o.o
Tel. [phone]
Tel/Fax [phone]
E- ail [email protected]
http://www.elektro-trading.com.pl

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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 maloperation 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:
AX34607a_hk/kk/04/2007 First edition
AX34607b_hk/kk/10/2007 Add new key CMD commands

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Table of Contents
1. Introduction....................................................................................................4
2. Terminal Assignments ...................................................................................5
2.1. Power supply .........................................................................................................6
2.2. Aux. voltage output ...............................................................................................6
2.3. Analogue inputs ....................................................................................................6
2.4. Adjustable Analogue Output.................................................................................6
3. Jumper Settings.............................................................................................7
4. How to Operate the Keys...............................................................................9
4.1. Normal display state .............................................................................................9
4.2. Parameter settings ..............................................................................................10
4.2.1. How to select a parameter ...........................................................................................10
4.2.2. How to change parameter settings..............................................................................10
4.2.3. How to store settings ...................................................................................................10
4.2.4. Time-out function..........................................................................................................10
4.3. Teach operation...................................................................................................11
4.4. Set all parameters to “Default“ ..........................................................................11
5. The Parameter Menu ...................................................................................12
6. Setup Procedure...........................................................................................13
6.1. Basic Parameters.................................................................................................13
6.2. Operational parameters ......................................................................................15
6.3. Keypad locking ....................................................................................................15
6.4. Modes of operation.............................................................................................16
6.4.1. Single mode (input A only)............................................................................................16
6.4.2. Dual Mode (Inputs A and B separately) .......................................................................17
6.4.3. Combined Modes (A+B, A-B, A:B, A•B) .......................................................................18
6.4.4. Parameters for scaling of the analogue output............................................................19
7. Commissioning............................................................................................. 20
8. Special Functions.........................................................................................21
8.1. Tare / Offset function..........................................................................................21
8.2. Linearization ........................................................................................................21
8.3. Manual input or „Teaching“ of the interpolation points.....................................23
8.4. Update time of the display and the analogue output .........................................24
9. Technical Specifications ..............................................................................25
9.1. Dimensions..........................................................................................................25
9.2. Technical data .....................................................................................................26
9.3. Commissioning Form ...........................................................................................27

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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 AX345 to AX347 have been designed for this kind of requirements.
Model AX 345 provides display function only.
Model AX 346 provides additional analogue outputs instead of the Preselections
Model AX347 provides two additional programmable Preselections with Optocoupler outputs
All other functions within this controller family are fully similar.
The present operating instructions are valid for model AX 346 only.
Separate operating instructions are available for models AX 345 and AX 347

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2. Terminal Assignments
*) 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
•When using this 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.
1
GN D ( 0V )
2
+17...30VCD
34567 8910
GND
230 VAC 115 VAC
0 V AC
I nput A
Input B
GND analogue
+24V D C
optional, see *)
GN D ( 0V )
GND analogue
+/- 10 V
0 / 4 - 20 mA
DC power supply Inputs +/- 10 V or 0 / 4 - 20 mA Aux. output Analogue out AC power supply

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2.1. Power supply
The unit accepts DC supply from 17V to 30V when using terminals 1 and 2, and 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 VDC / 150 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 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 (see 2.)
Ex factory, both inputs are always configured for current input.
(see section 3 for jumper settings)
2.4. Adjustable Analogue Output
The outputs provides a voltage output (0 … +10V or -10 … +10V) and a current output 0/4 – 20
mA proportional to the display value. Both analogue outputs refer to GND potential. The
polarity of the output signal depends on the sign shown in the display.
The output resolution is 14 bits and the response time about 58 msec. (see 8.4)
The voltage output accepts output currents of 2 mA, and the current output accepts load
resistors from 0 to 270 ohms.

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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.
Wrong jumper settings may cause serious damage to the unit!
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
Removal of the back plane
Location and function of the jumpers
Factory setting:
Input A = current, input B = current
Input A = voltage, input B = current

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Input A = current, input B = voltage Input A = voltage, input B = voltage
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.
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
R = resistance value
V = input voltage
Example: Desired input = 100 volts:
R = 300 – 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
R [ kΩ] = 3 x Vx [ volts ] - 30

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4. How to Operate the Keys
The unit uses 3 front keys for all setup operations. Subsequently, the key functions will be
named as shown in the table below.
ENTER SET Cmd
(Command)
The functions of the keys are depending on the actual operating state of the unit.
The following three operating states apply:
•Normal display state
•Setup state
a.) Basic setup
b.) Operational parameter setup
•Teach operation
4.1. Normal display state
You can only change over to the other states while the unit is in the normal
display state.
Change over to Key operation
Basic setup Keep ENTER and SET down simultaneously for 3 seconds
Operational
parameter setup
Keep ENTER down for 3 seconds.
Teach operation Keep SET down for 3 seconds
The Cmd key is only used with the Tare and Reset function, and for the Teach procedure with
linearization (see section 8).
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4.2. Parameter settings
4.2.1. How to select a parameter
The ENTER key will scroll through the menu. The SET key allows to select the corresponding
item and to change the setting or the numeric value. After this, the selection can be stored by
ENTER again, which automatically changes over to the next menu item.
4.2.2. How to change parameter settings
With numerical entries, at first the lowest digit will blink. When keeping the SET key down, the
highlighted digit will scroll in a continuous loop from 0 … 9 … 0 … 9. When you release the
SET key, the actual digit will remain and the next digit will be highlighted (blink).
This procedure allows setting all digits to the desired values. After the most significant digit
has been set, the low order digit will blink again and you can do corrections if necessary.
With signed parameters, the high order digit will only scroll between the values “0” (positive)
and “-“ (negative)
4.2.3. How to store settings
To store the actual setting, press the ENTER key, which will also automatically scroll forward
the menu.
The unit changes from programming mode to normal operation when you keep down the ENTER
key again for at least 3 seconds.
4.2.4. Time-out function
The “time-out” function will automatically conclude every menu level, when for a break period
of 10 seconds no key has been touched. In this case, any entry which has not been confirmed
by ENTER yet would remain unconsidered.