PR electronics 2261 User manual

2261
mV transmitter
No. 2261V102-UK
From ser. no. 970106001

1542
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2261V102-UK 1
mV TRANSMITTER
TYPE 2261
CONTENTS
Applications............................................................................................... 2
Technical characteristics...................................................................... 3
Inputs........................................................................................................... 3
Taring........................................................................................................... 3
Standard current / voltage output................................................... 3
Front error LED ........................................................................................ 4
Transducer supply .................................................................................. 4
Sense........................................................................................................... 4
Electrical specifications........................................................................ 4
Order ............................................................................................................ 6
Hardware programming........................................................................ 6
Block diagram........................................................................................... 7
Routing diagram...................................................................................... 8
Programming / operating the function keys ............................... 10
Description of functions (selection of application)................... 13

2 2261V102-UK
mV TRANSMITTER
• Load cell amplifier
• mV to current / voltage conversion
• Front-programmable / LED display
• Relative calibration of input span
• NPN / PNP input for external taring
• Supply for standard transducers
----------------------------------------------------------------------------------------------------------------
SUPPLY:
Supply voltage: 24 VDC
Transducer supply: 5...13 VDC
----------------------------------------------------------------------------------------------------------------
INPUT RANGE:
Measurement range: -40...100 mV
Taring input: PNP / NPN / front key
----------------------------------------------------------------------------------------------------------------
OUTPUT RANGE:
Current output: 0...20 mA
Voltage output: 0...10 V
----------------------------------------------------------------------------------------------------------------
Applications
Tank filling and draining
Weighing with a taring function
Measurement of cable tensile force
Level control
Signal conversion / amplification
The 2261 converts bipolar mV signals from transducers supplied directly by the
module to standard current / voltage signals. The 2261 is suitable for load cell
applications. By way of the relative calibration function the scale can be tared,
i.e. 0 and 100% calibrated without the need of the equivalent load. By way of
the taring function the measured range is set to either 0% when filling or 100%
when draining.

2261V102-UK 3
Technical characteristics
In general:
The 2261 is microprocessor-controlled and basic-calibrated meaning that input
and output can be programmed acc. to the requested signal range without any
readjustment. This guarantees high accuracy and flexibility.
The user interface consists of a 3-digit display and 3 front function keys which are
used for taring or change of input / output signal range.
Inputs
Analog input
The analog input can be programmed for voltage in the range -40...100 mVDC with
a min. span of 10 mV and max. offset of 70% of max. mV value.
A percentage overrange of the selected measurement range can be defined, there-
by making the unit react to an mV input outside the selected 0 and 100% range.
The display will show the input percentage.
The output must be scaled in such a way that the selected overrange is within the
allowed output signal range.
Digital input:
The digital signal can be selected as either NPN (short circuit to gnd.), or PNP
(+24 VDC).
Taring
Taring can either be by way of the digital input or from the front.
At 0% taring, the analog input will show 0% after taring. At 100% taring, the
analog input will show 100% after taring, corresponding to tara + net weight =
gross weight.
The analog input span is not changed but is kept relative to the new offset value.
The taring function can be disabled at the front.
Standard current / voltage output
The analog output can be programmed to current in the range 0...20 mA or voltage
in the range 0...10 VDC with a min. span of 5 mA or 250 mVDC with max. offset of
50% of the selected max. value.
By short-circuiting pins 2 and 3, the voltage signal is available between pins 2
and 1.
For voltage signals in the range 0...1 VDC, a 50 Ωshunt (DP 2-1) is applied; in the
range 0...10 VDC, a 500 Ωshunt (DP 2-2) is applied.
When both voltage and current signals are used simultaneously, the mA loop must
go to ground through the internal shunt.

4 2261V102-UK
Front error LED
At an incorrect output, the red LED will flash, e.g. at overrange saturation.
Transducer supply
Front-programmable to 5...13 VDC. It is up to the customer to ensure a max. load of
230 mA (e.g. 6 parallel 350 Ω load cells).
Sense
When the transducer supply is applied, the sense input can be used for compensa-
tion for cable resistance to the transducer.
Electrical specifications
Specifications range:
-20°C to +60°C
Common specifications:
Supply voltage.......................................................... 19.2...28.8 VDC
Internal consumption ............................................. 2.2 W
Max. consumption.................................................... 7.2 W
Signal / noise ratio .................................................. Min. 60 dB
Signal dynamics, input........................................... 17 bit
Signal dynamics, output ....................................... 16 bit
Updating time ........................................................... 20 ms
Response time, programmable ......................... 0.06...999 s
Calibration temperature ........................................ 20...28°C
Temperature coefficient........................................ < ±0.01% of span / °C
Linearity error ........................................................... ≤ ±0.1% of span
Effect of supply voltage change....................... < ±0.002% of span/ %V
Auxiliary voltage:
Transducer supply................................................... 5...13 VDC
Load (max.)................................................................. 230 mA
EMC immunity influence....................................... < ±0.5% of span
Relative air humidity.............................................. < 95% RH (non-cond.)
Dimensions (HxWxD).............................................. 80.5 x 35.5 x 84.5 mm
Protection degree.................................................... IP50
Weight .......................................................................... 130 g

2261V102-UK 5
Electrical specifications - Input:
mV input:
Measurement range................................................ -40...100 mV
Min. measurement range (span)........................ 10 mV
Max. offset ................................................................. 70% of selected max. value
Input in relation to supply gnd........................... > -5 V and < +10 V
Max. cable resistance per wire........................... 15 Ω
Suppression of
transducer cable resistance ................................ > 300
Input resistance........................................................ > 10 MΩ
Overrange ................................................................... 0...999% of selected
measurement range
Digital input:
NPN ............................................................................... Pull up 24 VDC / 6.9 mA
PNP................................................................................ Pull down 0 VDC / 6.9 mA
Trig level low............................................................. < 6 VDC
Trig level high ........................................................... > 10.5 VDC
Pulse width ................................................................ > 30 ms
Electrical specifications - Output:
Current output:
Signal range............................................................... 0...20 mA
Min. signal range (span)........................................ 5 mA
Max. offset ................................................................. 50% of selected max. value
Load (max.)................................................................. 20 mA / 600 Ω / 12 VDC
Load stability............................................................. < ±0.01% of span/100 Ω
Current limit ............................................................... < 23 mA

6 2261V102-UK
Voltage output through internal shunt:
Signal range............................................................... 0...10 VDC
Min. signal range (span)........................................ 250 mVDC
Max. offset ................................................................. 50% of selected max. value
Load (min.).................................................................. 500 kΩ
Voltage limit .............................................................. < 11.5 VDC
Observed authority requirements:
EMC................................................................................ 2014/30/EU
RoHS ............................................................................. 2011/65/EU
EAC................................................................................. TR-CU 020/2011
Of span = Of the presently selected range
Hardware programming
Order
JP1 JP2 Output range MENU 4.3
OFF OFF 0...10 mA
0...20 mA
001
002
ON OFF 0...500 mV
0...1000 mV
003
004
OFF ON 0...5 V
0...10 V
005
006
Type
2261

2261V102-UK 7
BLOCK DIAGRAM
2261
CPU
A / D
DC
PGA D / A
Vreg
NPN
PNP
0...20
mA
3 2
A
v v
A
I+ V+
DC 10
9
8 5 7
mV
EEPROM JP1 JP2
50 500 1
6 4 11
+ -
e
Supply+24VDC Supplygnd.
Input+
Sense
Sense NC
DigitalInput
+24VDC
Input-
VExcitation +
VExcitation gnd.
Gnd.
I + V
Out I
Out
V
Out
24VDC
Spec.
VOut
R 68

8 2261V102-UK
0.0
5.0 5.1 5.5
4.0 4.1
5.2 5.3
1.0 1.3
3.0 3.1 3.2
1.1 1.2
4.2 4.3 4.4
5.4
0 … 999
Taring
If no buttons are pressed for a period of 2 minutes, display returns to stage 0.0
040 = enable change in all stages - - - = disable change
Routing diagram
Taring
Select application
Frequency
suppression
50 Hz 60 Hz
Analog output Output 0%
Transducer supply
0.06...999 s
Response
time
Password code
Input
High cal. %Calibration
Overrange
Digital input
type
Current or
Voltage
001 = 0...10 mA 002 = 0...20 mA 003 = 0...500 mV 004 = 0...1000 mV 005 = 0...5 V 006 = 0...10 V
Output 100%
Program
access
5.0...13 VDC
If the key is pressed for a period > 2 sec.
Input 0%
0...20.0 mA 0...10.0 VDC
0...20.0 mA 0...10.0 VDC
Low cal. %
0...999% of span
0...100% 0...100%
Input 100%
-40...100 mV -40...100 mV
5.1
5.0
Memory
Programming
Press and hold , then press to store changes
Change of parameter
Next digit or point Go to entry menu / Leave menu without changes
Routing diagram

2261V102-UK 9
0.0
5.0 5.1 5.5
4.0 4.1
5.2 5.3
1.0 1.3
3.0 3.1 3.2
1.1 1.2
4.2 4.3 4.4
5.4
0 … 999
Taring
If no buttons are pressed for a period of 2 minutes, display returns to stage 0.0
040 = enable change in all stages - - - = disable change
Routing diagram
Taring
Select application
Frequency
suppression
50 Hz 60 Hz
Analog output Output 0%
Transducer supply
0.06...999 s
Response
time
Password code
Input
High cal. %Calibration
Overrange
Digital input
type
Current or
Voltage
001 = 0...10 mA 002 = 0...20 mA 003 = 0...500 mV 004 = 0...1000 mV 005 = 0...5 V 006 = 0...10 V
Output 100%
Program
access
5.0...13 VDC
If the key is pressed for a period > 2 sec.
Input 0%
0...20.0 mA 0...10.0 VDC
0...20.0 mA 0...10.0 VDC
Low cal. %
0...999% of span
0...100% 0...100%
Input 100%
-40...100 mV -40...100 mV
5.1
5.0
Memory
Programming
Press and hold , then press to store changes
Change of parameter
Next digit or point Go to entry menu / Leave menu without changes

10 2261V102-UK
5.15.0
Memory
Programming
Press and hold , then press
to store changes.
Change of parameter
Next digit or point
Go to entry menu / Leave
menu without changes
PROGRAMMING / OPERATING
THE FUNCTION KEYS
DOCUMENTATION FOR ROUTING DIAGRAM
General
The programming is menu-controlled. The main menus are numbered in level 0
(X.0), and the submenus are numbered in level 1 (X.1 - X.5). Each submenu has
an accompanying entry menu. The menus are structured in such a way that the
menus most frequently used are closer to the default menu 0.0. Please note that
programming is only possible when submenu 5.4 PAS has the value 040.
Main, sub, and entry menus are selected by the
3 function keys 2, 3, and 1as outlined in the
routing diagram. Activating 2in the submenus
will display the set value in the entry menu.
In entry menus, the digit that can be changed
will flash. Active digit position is shifted by the
3key and changed by the 1key. When the
decimal point flashes, its position can be shifted
by the 1key.
In entry menus with fixed parameters, you
switch between the parameters by the 1key.
Store by first activating the 3key and then the
1key simultaneously.
Press 2to return to the previous menu without changing the parameter.
0.0 DEFAULT - The input value is displayed in % of the input span.
At power ON, or if no keys have been activated for a period of 2 minutes, the
display returns to default.

2261V102-UK 11
3 tAR - Taring
When submenu 5.1 has been selected for {tLO or tHI}, activating the 3key for
more than 2 s will tare the input value to the value it had
when activated. The input span is not affected but is kept relative to the new
offset value.
1.0 In - SETTING OF INPUT SPAN
1.1 InL - Setting of 0% input value
Valid selections are -40...100 mV.
1.2 InH - Setting of 100% input value
Valid selections are -40...100 mV.
1.3 InO - Setting of overrange
The analogue output follows the set input span on a linear basis {1.1 - InL
and 1.2 - InH} with a limit at 20.5 mA (normally approx. 103% input span).
When the input signal is < or > the set input span, the display will track
this and show -xx or xxx% until the input begins to limit.
The overrange is set in % of the input span and guarantees that the input
does not begin to limit within the percentage overrange, neither below
nor above the set input span, provided that the input span ± overrange is
within the signal range -40 to 100 mV.
Setting the overrange does not affect the analogue output.
If the overrange measurement is to be included in the analogue output
signal, the output signal for the set input span must be selected to
provide room for the overrange within the signal range of the output
(0...20 mA / 0...10 VDC).
0.0
5.2 EFS/dFS - enable / disable front setting
Front Setting
Downcount ramp
Store and exit front setting
Upcount ramp

12 2261V102-UK
Example:
A signal of 5...15 mV corresponds to a weight of 0...1000 kilo.
It must be possible to detect a 50% overrange of the scale on the
analogue output of the mV transmitter at the same time as the display
shows 150%.
The following settings will result in the requested function with an
output signal of 4...19.9 mA:
Input: InL = 5.0, InH = 15.0, InO = 50.0
Output: OL = 4.0, OH = 14.6, UI = 002
Please note that the output span has been set to (14.6 mA - 4.0 mA) =
10.6 mA which, with an addition of 50%, will result in a span of (10.6 +
(10.6 * 50/100)) = 15.9 mA.
3.0 CAL - SETTING OF CALIBRATION VALUES
The calibration function is a relative calibration, i.e. the percentage input value
for the low calibration must be entered in submenu 3.1{CLO - Calibration Low},
and the percentage input value for the high calibration must be entered in
submenu 3.2 {CHI - Calibration High}. The entered percentages are used for
calculating the actual input span.
When {CHI - Calibration High} is activated, the calculation is made using the
percentages in {CLO} and {CHI}.
3.1 CLO - Setting of low calibration value
Key 2. Enter the calibration value by the 3and 1keys.
Connect the low calibration signal to the input. Activate the 3and 1
keys simultaneously.
3.2 CHI - Setting of high calibration value
Key 2. Enter the calibration value by the 3and 1keys.
Connect the high calibration signal to the input. Activate the 3and 1
keys simultaneously.
The input span is now calculated using the entered calibration values.
The mV values are read from the submenus {1.1 - InL and 1.2 - InH}.
4.0 OUt - SETTING OF ANALOGUE OUTPUT
4.1 OL - Low - 0% setting of analogue output
Valid selections are current in the range 0.0...20.0 mA or voltage in the
range 0.0...10.0 VDC.
4.2 OH - High - 100% setting of analogue output
Valid selections are current in the range 0.0...20.0 mA or voltage in the
range 0.0...10.0 VDC.

2261V102-UK 13
4.3 UI - Selection of current or voltage output
See the hardware programming for correct jumper setting. Possible
selections are:
001 = Current output in the range 0...10 mA
002 = Current output in the range 0...20 mA
003 = Voltage output in the range 0...500 mV
004 = Voltage output in the range 0...1000 mV
005 = Voltage output in the range 0...5 V
006 = Voltage output in the range 0...10 V
4.4 rEP - Setting of response time
Valid selections are 0.0...999 s. If the set response time is < 0.06 s, the
response time will be 0.06 s.
5.0 APP - APPLICATION SELECTION
5.1 tAR - Selection of taring type
Possible selections are tLO - 0% taring enable, tHI - 100% taring enable,
or dtA - taring disabled.
If tLO is selected, activating the 3key for more than 2 s or activating the
digital input will tare the input signal to 0%.
If tHI is selected, activating 3for more than 2 s or activating the digital
input will tare the input signal to 100% (max.).
The 2 types of taring can be used for filling or emptying respectively.
If a 0% (tLO) taring is selected, the analogue input will show 0% after
taring. If a 100% (tHI) taring is selected, the input will show 100% after
taring corresponding to tara + net weight = gross weight.
Taring is either from the digital input or from front.
5.2 dIN - Selection of digital input type
Possible selections are:
PnP = mechanical contact or open collector transistor connected to +24
VDC.
nPn = mechanical contact or open collector transistor connected to gnd.
5.3 SUP - Setting of supply voltage for transducer
Valid selections are 5.0...13 VDC.
Description of functions (selection of application)

14 2261V102-UK
5.4 PAS - Setting of password
Key 2. When the password is 040, changes can be made in all menu
points. When the password is <> 040, programming is blocked in all menu
points, but access is open for reading the settings. Enter the password by
the 3and 1keys.
When the password is correct, activate 3and 1simultaneously. Valid
selections are 0...999.
5.5 Frq - Selection of common mode frequency suppression
Possible selections are 50 or 60 Hz.

Programmable displays with a wide selection of
inputs and outputs for display of temperature, volume and weight,
etc. Feature linearization, scaling, and dierence measurement
functions for programming via PReset software.
Displays
A wide selection of transmitters for DIN form
B mounting and DIN rail devices with analog and digital bus
communication ranging from application-specific to universal
transmitters.
Temperature
Galvanic isolators for analog and digital signals
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powered and universal isolators featuring linearization, inversion,
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Interfaces for analog and digital signals as well
as HART®signals between sensors / I/P converters / frequency
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devices in zone 20, 21 & 22.
Ex interfaces
PC or front programmable devices with
universal options for input, output and supply. This range oers
a number of advanced features such as process calibration,
linearization and auto-diagnosis.
Universal

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