Erma Electronic TM 2500 User manual

ERMA
Electronic GmbH
ERMA
Electronic GmbH
TM 2500
Digital Panel Meter
for Thermocouples and Pt100
Instruction Manual

Trademarks
All trademarks they are named ore portrayed in the text are registered trademarks of its
owner. The trademarks are recognized by ERMA-Electronic.
Warranty
For deliverd products our "Allgemeine Lieferungs- und Zahlungsbedingungen" are effective.
In no event ERMA-Electronic or its suppliers shall be liable for any other damages whatsoever
(including, without limitation, damages for loss of business profits, business interruption or
other pecuniary loss) arising out of or inability to use this product.
All products from ERMA-Electronic are warranted against defective material and workmanship
for a period of two (2) years from date of delivery. If it is necessary to return the product to ERMA,
the sender is responsible for shipping charges, freight, insurance and proper packaging to pre-
vent breakage in transit. ERMA's warranty does not apply to defects resulting from action of the
buyer, such mishandling, improper interfacing, operation outside of design limits, improper repair
or unauthorized modification.

Contents
1. Description ...........................4
2. Safety instructions .......................5
2.1. Explanation of symbols ..................5
3. Mounting ............................6
3.1. Place of operation .....................6
3.2. Panel mounting ......................6
3.2.1. Panel for switch board ...............6
3.2.2. Panel for mosaic raster ..............7
4. Electrical connections .....................8
4.1. General instructions ....................8
4.2. Hints against noisy environment ..............8
4.3. Connection and pin asssignment .............9
4.4. Connection of input signals ................9
4.4.1. Thermocouple ...................9
4.4.2. RTD (Pt100) 2-wire ................10
4.4.3. RTD (Pt100) 3-wire ................10
4.4.4. Input voltage 0 - 200 mV, 0 - 2 V .........10
4.5. Digital inputs ........................10
4.6. Connection of power supply voltage DC ..........11
5. Start-Up .............................11
6. Procedure of programming ..................12
6.1. Summary of the programming level ............13
6.2. Programming level for configuration P-00 .........14
6.2.1. Cold Junctiont ...................15
6.2.2. Scaling the display range .............16
6.3. Programming level for peak value memory P-02 .....17
6.4. Programming quick reference ...............18
7. Software functions .......................20
7.1. Filtering ..........................20
7.2. Peak value modes .....................20
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7.2.1. Peak value memory ................20
7.2.2. Peak value memory single ............20
7.2.3. Peak value memory double ............21
7.3. Display test ........................21
8. Technical Specifications ....................22
8.1. Electric Specifications ...................22
8.2. Mechanical Specifications .................22
8.3. Environmental conditions .................23
9. Ordering Information ......................24
10. Notices .............................25
Date : 03.02.99
TM2500A.PUB
Technical subjects to change
3 ERMA-Electronic GmbH

1. Description
The digital panel meter model TM 2500 is an universal temperature gauge for
connecting the following temperature-sensing head directly:
• Thermocouple type K, J, S, L, and R
• RTD (Pt100) 2-Wire / 3-Wire
In addition the digital panel meter is equipped with signal inputs for
• Voltages 0 - 200 mV DC, and 0 - 2 V DC
Standard hardware components
• Three digital inputs
Standard software functions
• Scaling of voltage inputs
• Rounding last digit
• Filtering
• differents peak value memories
• Displaytest
1. Description
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2. Safety instructions
This instrument is produced in accordance with Class II of IEC 348 and VDE 0411.
When delivered the instrument has been tested to meet all functions described.
Before installing the instrument please read the mounting and servicing instructions.
We have no liability or responsibility to customer or any other person or entity with
respect to any liability, loss or damage caused or alleged to be caused directly or
indirectly by equipment or software sold or furnished by us. Read the installation
instruction carefully. No liability will be assumed for any damage caused by improper
installation.
Inspect the instrument module carton for obvious damage. Be shure there are no
shippingandhandingdamagesonthemodulebeforeprocessing.Donotapplypower
to the instrument if it has been damaged.
ERMA’s warranty does not apply to defects resulting from action of the buyer, such
as mishandling, improper interfacing, operation outside of design limits, improper
repair or unauthorized modifications.
2.1. Explanation of symbols
Caution: Will be used at dangerous for life and health !
Attention: Will cause damage
Instruction: If not noticed, trouble may occur
Tip: Useful hints for better operation
Caution Attention Instruction Hint
2. Safety instructions
5 ERMA-Electronic GmbH

3. Mounting
3.1. Place of operation
Attention must be payed to the protection against humidity, dust and high tempera-
tures at the place of operation.
3.2. Panel mounting
3.2.1. Panel for switch board
• For mounting in switch boards, insert the case into the panel cutout (according to
DIN 43700: 45,0+0,6 x 22,2+0,3 mm) from the front, using a fresh gasket for sealing
as required. Click into and place at each side the two fastening clips (M2,5 x 50
mm).
• Tighten the screws alternately, using enough pressure to get good retention and
sealing at the panel.
45,0
57,2 5
48,0
+0,6
22,2 24,0
21,0
42,0
+0,3
panel cutout
DIN 43700
panel cutout
DIN 43700
11,0
3. Mounting
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3.2.2. Panel for mosaic raster
• Insert the case into one of the following mosaic-systems:
a) Mosaic-system 8RU (M50x25) from Siemens
b) Mosaic-system from SubklevGehäuse für Mosaikrastereinbau
57,2 5 11,0
48,0
24,0
21,0
42,0
mosaic-system:
Siemens 8RU (M50x25)
Subklev
3. Mounting
7 ERMA-Electronic GmbH

4. Electrical connections
4.1. General instructions
• It is forbidden to plug or unplug connectors with voltage applied
• Attach input and output wires to the connectors only without voltages
applied
• Cords must be provided with sleeves
• Attention must be paid that the power supply voltage applied will
agree with voltage noticed at the name plate.
• The instrument has no power-on switch, so it will be in operation as
soon as the power is connected.
4.2. Hints against noisy environment
All inputs and outputs are protected against noisy environment and high voltage
spikes. Nevertheless the location should be selected to ensure that no capacitive or
inductive interference can have an effect on the instrument or the connection lines.
It is advisable:
• To use shielded cables.
• The wiring of shields and ground (0V) should be star-shaped.
• The distance to interference sources should be as long as possible.
If necessary, protective screen or metal enclosures must be provi-
ded.
• Coils of relays must be supplied with filters.
• ParallelwiringofinputsignalsandACpowerlinesshouldbeavoided.
4. Electrical connections
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4.3. Connection and pin asssignment
All inputs and outputs are connectors designet as plug-in screws terminals.
.
Pin assignment:
01 digital input 1 / displaytest 05 signal input (+) / RTD (Pt100)
02 digital input 2 06 GND / RTD (Pt100)
03 digital input 3 / reset the peak value 07 supply voltage (-)
04 signal input (-) / RTD (Pt100) 08 supply voltage (+)
4.4. Connection of input signals
4.4.1. Thermocouple
12345678
12345
(-)
(+)
678
4. Electrical connections
9 ERMA-Electronic GmbH

4.4.2. RTD (Pt100) 2-wire
4.4.3. RTD (Pt100) 3-wire
4.4.4. Input voltage 0 - 200 mV, 0 - 2 V
4.5. Digital inputs
12345
(-)
(+)
678
12345
(-)
(+)
678
12345
(-)
(+)
678
12345678
4. Electrical connections
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Digital input 1
• display test
• active => connecting screw terminal 1 to 6
• connecting to ground, low active
Digital input 2
• without special function, reserved
Digital input 3
• Reset the peak value memory
• active => connecting screw terminal 3 to 6
connecting to ground, low active
4.6. Connection of power supply voltage DC
5. Start-Up
Attention must be paid that the power supply voltage applied will
agree with the voltage noticed at the name plate.
Switch the power supply on (supply voltage applied to 7 (-) and 8 (+)).
When delivered, the instrument is programmed with a standard configu-
ration (default configuration). According to his measuring task, the custo-
mer can change the standard configuration by programming.
Attention: When the instrument is built-in a machine and the customer wants to
change the configuration, attention must be paid, that no damage will occur to the
machine!
12345678
-+
5. Start-Up
11 ERMA-Electronic GmbH

6. Procedure of programming
The procedure of programming is organized in different steps and can be carried out
via the screw terminals 1, 2 and 3 at the rear of the instrument. It is advisable to
connect a push button to the screw terminals 1 - 3.
Push Button Pressing
screw terminal 1
“P-button
selection of
- programming level
- parameter
screw terminal 2
“+"-button
increase of
- programming level
- number of parameter
- parameter
screw terminal 3
“-"-button
decrease of
- programming level
- number of parameter
- parameter
Activating the programming routine
• Press “P”-button together with “+”-button
• The display shows “P-00"
Leaving the programming routine
• Press “+”-button or “-”-button until the display shows “PEnd”
• Confirm the display “PEnd” by pressing “P”-button
• Return to normal measuring
Selection of a programming level
• Selecting a programming level by pressing the “+”-button or “-”-button
• Confirm the selected programming level by pressing the “P”-button
0V
DC-Supply
18-36 V/DC
GND
1234567
+18 ... +36 V/DC
8
"P" - button
"+" - button
"-" - button
6. Procedure of programming
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• The display shows the parameter number of the selected programming level
e.g.: “0-00" => Parameter 0 of programming level 0
e.g.: ”1-00" => Parameter 0 of programming level 1
Leaving a programming level
• Press “+”-button or “-”-button until the display shows “xEnd”
e.g.: “0End” =>leaving programming level 0
e.g.: “1End” =>leaving programming level 1
• Confirm the display “xEnd” by pressing “P”-button
• The display shows the programming level
e.g. “P-00" => programming level 0
e.g. ”P-01" => programming level 1
Selection of a parameter
• Selection the parameter by pressing “+”-button or “-”-button
• Confirm the parameter by pressing “P”-button
• The display shows the last programmed value of the selected parameter
Change and confirm a selected parameter
• Change the parameter by pressing the “+”-button or “-”-button
• Confirm the parameter by pressing “P”-button
• The display shows the programming level and the number of the parameter
e.g.: “0-05" => Parameter 5 of programming level 0
6.1. Summary of the programming level
The parameters of the panel meter are organized in different programming levels.
P-00: Programming level for general configuration of the panel meter
The function of the panel meter configuration is used to adapt the sensor and the
panel meter.
P-01: Reserved for future aplications
P-02: Programming level for maximum value
Thisprogramminglevelisusedforthedifferentpeakvaluemodesanditsparameters.
6. Procedure of programming
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6.2. Programming level for configuration P-00
Param. Description Range Default
Value
0-00
Input range
0 -> Thermocouple type K
-100 to +1370 °C
1 -> Thermocouple type J
-100 to +1000 °C
2 -> Thermocouple type S
0 to +1750 °C
3 -> Thermocouple type L
-100 to +900 °C
4 -> Thermocouple type R
0to1590°C
5 -> RTD (Pt100) 2/3-Wire
-200 to +800 °C
6 -> Voltage 0 - 2 V
7 -> Voltage 0 - 200 mV
0..7 0
0-01 Display value of min. input signal
for input ranges 6 and 7 -999 .. +9999 0
0-02 Display value of max. input signal
for input ranges 6 and 7 -999 .. +9999 +2000
0-03
Programmable points
0 -> XXXX
1 -> XXX.X
2 -> XX.XX
3 -> X.XXX
0..3 0
0-04
Configuration of digit 1
0 -> Display in steps of 1
1 -> Display in steps of 2
2 -> Display in steps of 5
3 -> Display in steps of 10
0..3 0
0-05 Filtering
0 -> no filtering
X -> Number of filter cycles 0..99 0
0-06
Resolution
0 -> Resolution 1 °C
1 -> Resolution 0,1 °C
only for input ranges 1/3/5
0..1 0
0-07
Cold junction
0 -> Only thermocouple
1 -> Thermocouple + internal
cold junction
2 -> Temperature of the internal
temperature sensor
0..2 0
6. Procedure of programming
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Param. Description Range Default
Value
0-08 Correction of cold junction -20 to +20 0
0-09 Brightness of the display
0 -> Brightness 50 %
1 -> Brightness 100 %
0 .. 1 only valid
possible to 9999 1
0End Leaving programming level P-00 - -
6.2.1. Cold Junction
The panel meter include an internal temperatur compensation with cold junction
referencetemperature.Byprogrammingparameter0-08(Correctionofcoldjunction)
there can be do a correction for the cold junction between -20 to +20°C.
Programmable selection by parameter 0-07:
• Only thermocouple
• Thermocouple + internal cold junction
• Only temperature of the internal temperature sensor
6. Procedure of programming
15 ERMA-Electronic GmbH

6.2.2. Scaling the display range
The overflow or underflow becomes active if the displayed value is greater or smaller
than more as 5-10 % of the programmed display range (parameter 0-01 and 0-02).
• When overflow is active the display shows “nnnn”
• When underflow is active the display shows “uuuu”
The assignment of the display range to the minimal and maximal input signal is done
by programming the parameter 0-01 and 0-02.
Example:
Input range: 0 to +2 V, Display range : -999 to +9999
Step Param. Range
1. 0-01 -999
2. 0-02 +9999
3. 0End End
+10000
display value
parameter
0-02
+9000
+8000
+7000
+6000
+5000
+4000
+3000
+2000
+1000
+1 V +2 V
over
f
low
underflow
parameter
0
-
0
1
-1000
6. Procedure of programming
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6.3. Programming level for peak value memory P-02
Param. Describtion Range Default
Value
2-00
Peak value mode
0 -> normal working
1 -> peak value memory
2 -> peak value memory single
3 -> peak value memory double
0..3 0
2-01 Signal level for
peak value memory single and
peak value memory double -999 .. +9999 100
2-02 Delay time for
peak value memory single and
peak value memory double 0..99 5
2-03 Memory time for
peak value memory single 0..99 5
2-04 Reserve: no function
2-05 Reserve: no function
2-06 Reserve: no function
2-07 Reserve: no function
2-08 Reserve: no function
2-09 Reserve: no function
2End Leave programming level P-02
6. Procedure of programming
17 ERMA-Electronic GmbH

6.4. Programming quick reference
press "P"-button and "-" - butto
n
P-00 P-01
0-00 P
P
input range
display value of
minimal signal value
0-02
0-01
0-03
-
+-
+-
+
P
P
display value of
maximal signal value
programmable points
0-04
0-05
-
+-
+P
P
configuration of digit 1
filtering
0-06 P
resolution
display-brightness
0-07
-
+P
P
P
P
-
+-
+-
+
-
+
--
++
P
1
-
-
2
3
a6
0-08
0-09
0End +
1
2
P
3
cold junction
cold junction-correction
6. Procedure of programming
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P
operation level
P-02
2-00
-
+P
P
P
peak value mode
signal level
2-02
2-01
2-03
-
+-
+P
P
delay time
memory time
2-04
2-05
-
+-
+P
P
reserve
reserve
reserve
2-06 P
-
+-
+
2-07 P
reserve
2-08
2-09
-
+-
+-
+
P
P
reserve
reserve
-
+
7
-
8
PEnd +
3
a
9
2End +
7
8
P
9
description
P
+
-
pressing "P"-button
(screw terminal 1)
pressing "+"-button
(screw terminal 2)
pressing "-" -button
(screw terminal 3)
6. Procedure of programming
19 ERMA-Electronic GmbH