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531K
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1 Short description ............................................................... 2
2 Safety instructions and warnings ..................................... 2
2.1 Use according to the intended purpose ..................... 2
3 Mounting..............................................................................3
3.1 Installation .................................................................. 3
3.2 Electrical connection .................................................. 3
4 Start-up.........
.......................................................................4
5 Programming.......................................................................4
5.1 Switching to programming ........................................ 4
5.2 Changing the parameter setting ............................... 4
5.3 Saving the parameter setting ..................................... 4
5.4 Programming ............................................................ 5
5.5 End of programming ................................................. 6
6 Operation..............................................................................7
6.1 Switching the display during operation ..................... 7
6.2 Saving the momentary value ..................................... 7
7 Error and alarm messages .............................................. 7
8 General technical features ............................................... 8
8.1 Electrical features ..................................................... 8
8.2 Mechanical features .................................................. 8
8.3 Environmental conditions ............................................9
9 Scope of delivery..................................................................9
10 Order code............................................................................9
11 Dimensions..........................................................................10
Summary
Note :
The fields with a grey background contain the
factory-set default values.
– Subject to change without prior notice –
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Only use this display
– in a way according to its
intended purpose
– if its technical condition is
perfect
– adhering to the operating
instructions and the general
safety instructions.
2 Safety instructions and warnings
1. Before carrying out any installation or maintenance
work, make sure that the power supply of the digital
display is switched off.
2. Only use this digital display in a way according to its
intended purpose.
3. If its technical condition is perfect.
4. Adhering to the operating instructions and the general safety instructions.
5. Adhere to country or user specific regulations.
6. The digital display is not intended for use in areas
with risks of explosion and in the branches excluded
by the standard EN 61010 Part 1.
7. The digital display shall only operate if it has been
correctly mounted in a panel, in accordance with the
chapter “Main technical features”.
This digital display is an easy-to-use, microprocessorcontrolled device for the display (and the acquisition) of
measured temperature values. The temperatures are
measured by means of Pt100 or Ni100 resistance thermometers. They can display either the current measured value, the maximum value or the minimum value. In
case of power switch-off, the maximum and minimum
values are stored in an EEPROM. The values are
restored as soon as the display is powered again. The
Latch input is isolated electrically from the signal input
by means of an optocoupler. It allows storing the current measured value.
The supply voltage (10 .. 30 V DC) is isolated electrically from the signal input by means of a DC/DC converter.
1 Short description
The digital display only may be used as a panel-mounted device. Applications of this product may be found in
industrial processes and controls, in the branch of the
manufacturing lines for the metal, wood, plastics,
paper, glass, textile, etc., processing industries.
Overvoltages at the terminals of the digital display must
be limited to the values of overvoltage category II.
If the digital display is used to monitor machines or processes in which, in case of a failure of the device or an
error made by the operator, there might be risks of
damaging the machine or causing accidents to the operators, it is up to you to take appropriate safety measures.
2.1 Use according to the intended purpose
!
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3.2 Electrical connection
2-wire resistance thermometer
3-wire resistance thermometer
4-wire resistance thermometer
3.2.1 Pt100/Ni100 resistance thermometers
3.2.2 Supply voltage and Latch input
connection
3
1
2
3 Latch input
2 0 V DC (GND)
1 10 ... 30 V DC
1. The digital display shall not be installed near to con-
tactors or motor starters.
2. We recommend the use of wire end ferrules in order
to avoid short-circuits between adjacent terminals.
3. In order to keep the interferences at the measuring
input as low as possible, the signal and power supply wires must be routed separately.
4. Use shieded cables for all signal/probe wirings and
avoid routing the signal/probe wirings parallel to
each other. The shield shall only be grounded at one
point in order to avoid ground loops.
3.1 Installation
Important note:
Before carrying out any installation or maintenance
work, make sure that the power supply of the digital
display is switched off.
3 Mounting
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4. Start-up
After switching on the supply voltage:
1. a display test is carried out
(Duration: 2 seconds)
2. Device type and software
version are displayed
(Duration: 2 seconds)
3. the selected probe is
displayed
(Duration: 2 seconds).
4. the display is ready to
operate and the measured
value is displayed.
5. Programming
To switch to the programming mode:
5.1 Switching to programming
1. switch the power supply of the device off, press
simultaneously both keys on the front side, and then
switch the power supply on again.
2. The display shows the following message.
5.3 Saving the parameter setting and
switching to the following parameter
2. and press simultaneously the right/grey key.
5.2 Changing the parameter setting
1. press the right-hand/grey key to change the
parameter setting by one value at a time
2. to input numerical values, select first the decade with
the left-hand/red key
3. the decade blinks
4. set now the numerical value using the righthand/grey key
5. to reach the following decade, press the left-
hand/red key
6. if negative numerical values are required, set the left
decade to “–” or “–1”.
3. release both keys. The first parameter to be set
appears on the display. The display switches every
second between the following messages
1 s
4. press the left key to stop the display from
switching. The last programmed parameter setting
is displayed.
1. keep the left/red key pressed
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5.4 Programmng the adjustable parameters
5.4.1 Input signal type
Range
Ni100 probe
Pt100 probe
5.4.2 Measuring method
Measuring method
2 wires; please note
See point 5.4.2.1 opposite!
3 wires
4 wires
5.4.2.1 Line resistivity
If you selected the 2-wire measuring method in 5.4.2,
the display shows
Input here the line resistivity of your 2-wire probe for
long connection cables. If the resistivity value input
here is wrong, the displayed result will not be correct.
5.4.3 Decimal point
Decimal point
Resolution 0,1 °C/0,1 °F
Resolution 1 °C/1 °F
5.4.4 Temperature unit
Selection in the menu
Display in °C
Display in °F
5.4.5 Correction value
Setting the correction value
Inputting a correction value allows acting upon the
displayed result. These correction values may be
positive or negative. The input is always made with one
decimal place.
Correction value in 0,1 °C/0,1 °F,
depending on the unit selected
Selection in the menu
Selection in the menu
Selection in the menu
Selection in the menu
Unit
Note :
The fields with a grey background
contain the factory-set default
values.
...
......
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5.5 End of programming
When programming is finished, end the prorgamming
routine as follows:
Programming restarts.
The set values can be
checked and modified.
5.4.6 Maximum value acquisition
The maximum value may be saved and consulted
during operation (see 6.1)
Maximum value
acquisition on
Maximum value
acquisition off
5.4.6.1 Resetting the maximum value
This allows defining whether the maximum value can
be reset during operation or not. However, the maximum value can only be reset if the maximum value
display is the active function (see 6.1). If the maximum
value is reset, the current measured value becomes
the new maximum value.
The maximum value can
be reset using the red
key
The maximum value
cannot be reset
5.4.7 Minimum value acquisition
The minimum value may be saved and consulted
during operation (see 6.1)
Minimum value
acquisition on
Minimum value
acquisition off
5.4.7.1 Resetting the minimum value
This allows defining whether the minimum value can be
reset during operation or not. However, the minimum
value can only be reset if the minimum value display is
the active function (see 6.1). If the minimum value is
reset, the current measured value becomes the new
minimum value.
The minimum value can
be reset using the red
key
The minimum value
cannot be reset
Selection in the menu
Selection in the menu
Selection in the menu
Selection in the menu
Programming is finished. The set values are
used in operation.
Selection in the menu
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In case of a High Signal at the Latch input, the current
measured value is frozen on the display. The minimum
6.2 Saving the momentary value
(Display-Latch)
and maximum value acquisition continues operating in
the background.
7 Troubleshooting and alarm messages
Measuring range overflow
Ranges see 8.1
Measuring range underflow
Ranges see 8.1
Probe broken or input
signal exceeds the
allowable range
If the display does not light up, check the supply voltage or the power supply cables. Do not open the housing by force.
6. Operation
press the right-hand/grey key to select among the following functions:
–current measured value
–minimum value
–maximum value.
Press the key once to display the designation of the
active display function for 2 seconds. If, during this
time, the right-hand grey key is pressed a second
6.1 Switching the display during operation
time, the display switches to the following display func-
tion. This is confirmed by a 2-second display of the
designation of the new function. After these 2 seconds,
the display shows, depending on the selection, the
maximum value, the minimum value or the current
measured value.
1. Current measured value, press once the
right-hand/grey key
for 2 s:
after 2 s
2. Minimum value (when active), press once the
right-hand/grey key
for 2 s:
after 2 s
3. Maximum value (when active), press once the
right-hand/grey key
for 2 s:
after 2 s
4. Current measured value, press once the
right-hand/grey key
for 2 s:
after 2 s
7.1 Display does not light up
7.2 Measuring rang overflow or underflow
7.3 Input problems
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8 Main technical features
Operation:
by means of two front panel keys
DIsplay:
5-digit display, red 7-segment LED’s,
Height of the figures 8 mm
Display range:
(see temperature range), with leading zeros
suppression Measuring range overflow, indicated by ooooo on the display.
Measuring range underflow, indicated by uuuuu
on the display.
8.1 Electrical features
Input:
PT100 resistance thermometer
Ni100 resistance thermometer
Supply current:
1 mA
Circuit type:
2-wire, 3-wire and 4-wire connection technique,
programmable
with probe breakage monitoring
Temperature ranges:
Pt100 acc. to DIN IEC 751: -199.9°C .. +850.0°C
(-327.8°F .. 1562.0°F)
Ni100 acc. to DIN 43760: -60.0°C .. +250.0°C
(-76.0°F .. 482.0°F)
Resolution:
0,1°C (0,1°F) or 1°C (1°F), programmable
Linearity error PT100:
< 0,1 % for the whole measuring range at an
ambient temperature of 20°C
Linearity error Ni100:
< 0,2 % for the whole measuring range at an
ambient temperature of 20°C
Temperature drift:
0,1 K/K
ambient
Measuring rate:
5 measurements/second, fixed
Display refresh:
1 ... 2 times per second
Display Latch input:
DIsplay stop for the current measured value,
active for log. 1
Switching log. 0: 0 ... 2 VDC
level log. 1: 4 ... 30 VDC
Supply voltage:
10 ... 30 V DC, electrically separated,
with Verpolschutz
Current consumption:
max. 40 mA
Test voltage:
500 V
eff
; 50/60 Hz; 1 min
Data backup:
EEPROM
8.2 Mechanical features
Housing:
Housing for control panel 48 x 24 mm
according to DIN 43 700, RAL 7021
Dimensions (W x H x D):
48 x 24 x 66 mm
Panel cut-out (W x H):
45
+0,6
x 22,2
+0,3
mm
Mounting depth:
approximately 59 mm
Weight:
approximately 50 g
Protection level:
IP 65 (on the front side)
Connection:
Screw terminal, RM 5.08, 7 poles
Connection diameter:
single-wire 0,14 .. 1,5 mm
2
thin wire 0,14 .. 1,5 mm
2
wire dimensions AWG 26-16
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8.3 Environment conditions
EMC:
according to EC EMC directive 89/336/EEC
Interference emissions EN 50081-2 /
EN 55011 Class B
Interference resistance EN 61000-6-2
Operating temperature:
-20 °C ... +65 °C, relative humidity < 85%
Storage temperature:
-25 °C ... +70 °C
9 Scope of delivery
Digital display
Clamp
Front panel for clamp mounting,
Panel cut-out 50 x 25 mm
Front panel for screw mounting,
Panel cut-out 50 x 25 mm
Seal
Multilingual operating instructions
1 set of self-adhesive symbols
10 Order code
531K
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11 Digital display dimensions
Panel cut-out
Mounting frame
Connections
1 10 ... 30 V DC Supply voltage
2 0 V DC GND
3 Latch - Input
4 Pt100/Ni100
5 Pt100/Ni100 (Sensor-input
6 Pt100/Ni100 see page 14)
7 Pt100/Ni100
Panel cut-out
1
Countersinking Af3, DIN 74
10
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