eltherm ELTC-21 User manual

www.eltherm.com
P.: [phone]
F.: [phone]
[email protected]
eltherm GmbH
Ernst-Heinkel-Strasse 6 -10
57299 Burbach, Germany
BU-093
Revision 7
ELTC-21 & ELTC-22
Temperature controller up to 400°C
for DIN rail mounting
OPERATION-
MANUAL

2
CONTENT
INTRODUCTION 3
RECEIPT OF GOODS 3
SCOPE OF DELIVERY 3
STORAGE 3
DISPOSAL 3
FUNCTIONAL DESCRIPTION & TECHNICAL DATA 4
FUNCTIONAL DESCRIPTION 4
TECHNICAL DATA 4
Dimensions 4
CONNECTION PLAN 5
SPECIAL NOTES 5
Installation and safety information 5
OPERATION 6
OPERATING PANEL 6
Selecting and changing parameters 6
Protection against unauthorized operation 6
Error messages 6
PARAMETERS AND THEIR MEANING 7
Notes on commissioning 7
Declaration of Conformity 7
DOWNLOADS 8
NOTES 8
RESERVATION
Subject to technical changes. Changes, errors and misprints do not constitute grounds for claims for damages.
For safety components and systems, the assembly instructions as well as the relevant and currently valid standards and regulations must be
observed.
eltherm GmbH
Ernst-Heinkel-Str. 6-10
57299 Burbach
T.: [phone]
F.: [phone]
[email protected]
Document:
864305061009X
BU-093
Operation manual
ELTC-21 & ELTC-22 temperature controller
up to 400°C for DIN rail mounting
Author: Peter Schmidt Date: 23.01.2013
Revision: 7Julian Engel Date: 15.06.2023
For proper and safe use of the ELTC-21 and ELTC-22 tempe-
rature controller, please follow these instructions.
Please keep these instructions for future reference (e.g. in
the system documentation).

3
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Contact us: [phone] • [e-mail]
Operation manual
ELTC-21 & ELTC-22
BU-093
Revision 7
Particularly important points in these instructions are indicated by the following symbols:
RECEIPT OF GOODS
Upon receipt of the goods, check the controllers and acces-
sories and compare the information on the type plate with
the information on the delivery bill to ensure that the correct
material has been delivered.
STORAGE
DISPOSALSCOPE OF DELIVERY
The scope of delivery of the article includes:
INTRODUCTION
Display conventions
ATTENTION
indicates a potentially dangerous situation.
If not avoided, there is a risk of damage or malfunction.
DANGER
indicates an extremely dangerous situation.
If it is not avoided, there is a danger to life or at least a high risk of
serious injury.
WARNING
indicates a potentially dangerous situation.
If it is not avoided, there is a risk of injury or at least a high risk of
damage.
NOTE
important information and instructions for safe, eective and envi-
ronmentally sound use.
i
NOTE
Storage should be in a dry place at an ambient temperature
of -25°C to 60°C.
i
NOTE
The WEEE logo (shown above) indicates that this product
should not be disposed of with other waste.
For more information on disposal and
and recovery of waste electrical and electronic equipment
For more information on the disposal and recovery of waste
electrical and electronic equipment (WEEE) and collection
points, please contact your local waste management com-
pany or the manufacturer from whom you purchased the
product.
i
The electronic temperature controller of the ELTC type series is a controller with digital display for wall mounting. The tempera-
ture measured with a Pt100 temperature sensor is processed and displayed by a microcontroller. After an actual value/
setpoint comparison, the output relays are then switched according to the conguration. Cable glands and terminals are built in
for electrical connection. The device is supplied in a splash-proof plastic housing with a transparent housing cover including ac-
cessories. The temperature controller is also suitable for connection of temperature sensors type ELTF-PTEx in hazardous areas.
Qty. Item
1 Pcs. Temperature controller
1 Pcs. Operation manual DE & EN

4
46.0 mm
87.5 mm
58.0 mm
51.5 mm
60.0 mm
46.5 mm
30.0 mm
FUNCTIONAL DESCRIPTION & TECHNICAL DATA
TECHNICAL DATA
Dimensions
FUNCTIONAL DESCRIPTION
If the actual value (P01) falls below the setpoint (P10 minus hysteresis P11), relay K1 switches the heating on. The integrated
alarm relay enables error messages via a changeover contact in case of over / under temperature, sensor interruption or sensor
short circuit. In the event of sensor errors, relay K1 switches the heating line off or on, depending on the configuration of the
controller.
Controller type ELTC-21 ELTC-22
Nominal voltage 187…253 VAC, 50/60 Hz 24 VDC / 18 VAC, ± 10 %
Current consumption max. 30 mA max. 100 mA
Relay K1 16 A res., 80 A max. 20 ms 16 A res., 80 A max. 20 ms
Relay K2 (alarm) 8 A res. / max. 230 VAC (changeover contact) 1 A res. / max. 24 VDC (changeover contact)
Operating temperature -25 to +55°C -25 to +55°C
Storage temperature -25 to +60°C -25 to +60°C
Setting range 0 to +400°C, congurable 0 to +400°C, congurable
Display range -50 to +400°C -50 to +400°C
Accuracy ± 1K, ± 2 Digits (-50 to 400°C) ± 1K, ± 2 Digits (-50 to 400°C)
Display LED, red, 13 mm / 1,2 mm, red LED, red, 13 mm / 1,2 mm, red
Sensor connection Pt100 2-wire & Pt100 3-wire Pt100 2-wire & Pt100 3-wire
Connection terminals 0.2...1.5mm² copper wire,
stripping length 9…10mm
0.2...1.5mm² copper wire,
stripping length 9…10mm
Housing material Polycarbonate, black Polycarbonate, black
Housing dimension 51,5 x 87,5 x 58 mm (WxHxD) 51,5 x 87,5 x 58 mm (WxHxD)
Protection class IP 54 from the front, IP 30 IP 54 from the front, IP 30
Type of mounting DIN rail TS DIN rail TS
Weight approx. 0,2 kg approx. 0,2 kg

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10 11 12 13 16 17 18
4 6 7 8 95
ELTC-21 only
230 VAC
L N
ELTC-22 only
24 VDC
+ -
K2
ALARM
K1
Heizung
Heater
Netz
Mains
*
Pt100
Contact us: [phone] • [e-mail]
Operation manual
ELTC-21 & ELTC-22
BU-093
Revision 7
CONNECTION PLAN
SPECIAL NOTES
Installation and safety information
ATTENTION
• Electrical connection / commissioning must be carried
out by a qualied electrician.
• The relevant local safety regulations must be observed.
Observe the connection values according to the type
plate and these instructions.
• When selecting the installation site, observe the IP
protection class and permissible operating temperature.
Locations protected from direct precipitation and sunlight
are advantageous.
• Operation only with closed cover, tightened screw con-
nections / blind plugs and installed seals.
Avoid damage, tensile stress, kinking and torsion of the
connected lines.
• The sensor lines must be shielded when extended, the
shielding must be grounded on one side near the cont-
roller. The cable must not be laid parallel to lines carrying
mains voltage. The total line resistance must not exceed
10 ohms.
• Make sure that the connection terminals have the correct
size and dimensioning to accommodate the conductors.
DANGER
A residual current circuit breaker is required for each circuit.
DANGER
Before starting work on heating or connection lines or ter-
minals, make sure that the corresponding circuit is switched
o and secured against unintentional reconnection
ATTENTION
• Persons involved in installations and testing of electrical
trace heating systems should be appropriately qualied to
perform the required actions
• Electrical heat-tracing systems should be installed under
the direction of a qualied electrician who has completed
supplemental training on electrical heat-tracing systems
• Critical work, such as making connections or terminations,
should be performed only by qualied personnel
NOTE
After switching on the controller, the display shows the
current actual value.
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Terminal Connection
4 Alarm relay NC
5 Alarm relay COM
6 Alarm relay NO
7 -
8 Power supply heater
9 Heater connection
*16 Connection Pt100 3-wire compensation
(not necessary with 2-wire)
17 Connection Pt100 (red)
18 Connection Pt100 (white)
Only ELTC-21
10 Mains supply input (L)
11 Mains supply input (N)
Only ELTC-22
12 Mains supply input (+)
13 Mains supply input (-)

6
.
P
.
OPERATION
After switching on, the type number ("C-2") and software
version of the device appear and after approx. three seconds
the measured actual value. If the "P" key is pressed briey, the
"Set" display appears and then the setpoint value is displayed
with an automatic return after 5 seconds. If the "P" key is pres-
sed for approx. 3 seconds, the parameter list "P10" is display-
ed. If the "P" key is held down for a further 3 seconds, " dC" for
degrees Celsius or " dF" for degrees Fahrenheit is displayed.
Protection against unauthorized operation
The control setpoints can basically be set without restriction,
provided they are not limited by "P13/P14". All other parame-
ters are protected by a code.
If a code is required, the display shows "C00". Use the arrow
keys " / " to set the required code number "C42" and
conrm with "P".
After approx. 1 minute without pressing any key, the code is
requested again.
Autoscrolling
If you hold down the arrow keys " / ", the values continue
to scroll automatically.
Error messages
In the event of an error, the display shows an error code. Sen-
sor errors are displayed with a delay of approx. 10 seconds.
Error codes
• E01 = Sensor short circuit or temperature < -60°C
• E02 = Sensor interruption or temperature > 410°C
• E03 = 3rd wire is missing or R ≥ 10Ω
• C00 = Protected parameters, code entry required
Keys
" " = Increase values
" " = Decrease values
"P" = Programming key
LEDs in Display
1st"." = Control relay ON
2nd"." = Alarm relay activated (=switched OFF)
A ashing of the LEDs indicates a function delay.
OPERATING PANEL
Selecting and changing parameters
To reach the parameter list, "P" must be pressed for approx. 3
seconds until "P10" appears in the display.
Press„P"for 3 seconds
Parameter no. appears
Press„ /“
Select parameters
Press„P“
Parameter value appears
Press„ /“
Change parameters
Press„P“
New value saved, back to parameter no.
Press„ /“ till „P01“ or T > 1 minute
Exit input mode

7
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Contact us: [phone] • [e-mail]
Operation manual
ELTC-21 & ELTC-22
BU-093
Revision 7
Declaration of Conformity
We declare that the described product fully complies with Di-
rectives 2014/35/EU, 2014/30/EU and 2011/65/EU. If you need
a detailed declaration of conformity, please contact us.
ATTENTION
The settings of the controller must be checked during
commissioning.
NOTE
The temperature control device and the temperature sen-
sor(s) should be calibrated against the factory setting during
commissioning if necessary.
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Notes on commissioning
PARAMETERS AND THEIR MEANING
Parameter Meaning and range
P01
Actual value display only
P10
Control setpoint range P13...P14, [5°C]
P11
Switching hysteresis range 2...10K, [2K]
P12
Minimum standstill
time (relay K1)
0..30 min., [0 min],
resolution 1 min.
P13
Maximum adjustable
setpoint
range P14...+390°C, [+390°C]
P14
Smallest adjustable
setpoint
range -50°C...P13, [0°C]
P20
Sensor type
0 = Pt100, 3-wire, °C (resolution 1K)
[1] = Pt100, 2-wire, °C (resolution 1K)
2 = Pt100, 3-wire, °F (resolution 2°F)
3 = Pt100, 2-wire, °F (resolution 2°F)
P21
Sensor correction -30...+10K, [0]
P30
Overtemperature alarm P31...400°C, [400°C]
P31
Undertemperature alarm -60...P30, [-60°C]
P32
Alarm delay in opera-
tion
0...99 min., [0 min.]
resolution 1 min.
P33
Alarm delay after
switch-on
0...500 min., [0 min.]
0 = relay K2 (active) energizes on sensor
error
Load relay K1 drops in case of sensor
error
[1] = relay K2 (passive) drops in case of
sensor error
Load relay K1 drops in case of sensor
error
P34
Alarm relay mode
(Relay K1 and K2)
2 = K2 works as enable relay
Load relay K1 drops in case of sensor
error
3 = Relay K2 (active) energizes in case of
sensor error
Load relay K1 energizes in case of sensor
error
4 = Relay K2 (passive) drops in case of
sensor error
Load relay K1 energizes in case of sensor
error
5 = K2 works as enable relay
Load relay K1 energizes in case of sensor
error
ATTENTION
P34=3, P34=4 and P34=5 is only permissible for frost pro-
tection applications and use of self-regulating trace heaters.
In [...] the factory settings are indicated.
Mode Enable relay
Mode Alarm relay
In this operating mode (P34=2 or 5), relay K2 switches inde-
pendently of P32 and P33 as soon as the actual value is within
P30 and P31.
(P34 = 0 or 1) : If the actual temperature is below P31 when
the device is started, P33 is used once as the alarm delay to
give more time to the system. In normal operation, P32 is used
as alarm delay.

www.eltherm.com
eltherm GmbH
Headquarters
Ernst-Heinkel-Straße 6 -10
57299 Burbach. Germany
T.: [phone]
F.: [phone]
[email protected]
864305061009X Operation manual ELTC-21 & ELTC-22 EN - Subject to technical changes
You can find helpful downloads for this or other products
under the following link:
https://eltherm.com/downloads
DOWNLOADS
Parameter Own settings
P10
P11
P12
P13
P14
P20
P21
P30
P31
P32
P33
P34
NOTES