Eltherm ELTC-14 User manual

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Operating Manual

Eltherm Electronic Temperature Controller

ELTC-14

Part Nos.: 0620007

eltherm Canada Inc.

1144 Appleby Line Unit E7

Burlington Ontario L7L 5H9

Canada

Phone: +1 (289) 812-6631

Fax: +1 (844) 325-6750

E-Mail: [email protected]

Internet: www.eltherm.com

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IMPORTANT SAFETY NOTES!

Please read this manual carefully before using this product. Warranty claims cannot be

considered if damage is caused by failure to comply with these operating instructions!

This documentation was compiled with the utmost care, however, we cannot guarantee for

its correctness in every respect.

Product Description

The eltherm Series EL-TC 14X electronic temperature controllers are designed for monitoring and control of

heating and heat tracing circuits. The temperature controller comes complete with a single circuit 20A

switching output and additional 8A alarm relay. The controller is designed to operate with 3-wire or 2-wire

Pt100 RTD temperature sensors (optionally supplied by eltherm). ELTC-14 series controllers are supplied fully

integrated in weather-proof enclosures, suitable for wall mounting, complete with transparent cover to allow for

viewing and access to the front panel and user interface of the controller.

Controller Operation

Operation of the controller and the user interface is very simple. After power-on, the type/model number of the

controller appears on the front panel of the device (displays “

C14”

), followed by a 3 second delay after which

the actual temperature will be displayed. Pressing the programming (

) button allows for viewing of the

temperature set point, displayed as ‘Set’, followed by the set point temperature. The menu automatically

returns to the main display (actual temperature) after 5 seconds. Access to the controller parameter list is

achieved by pressing and holding the “P” button for 3 seconds (after which “P10” appears on the display).

Pressing and holding button “P” for an additional 3 seconds provides display “P” of “dC” for degrees

Centigrade or “dF” for degrees Fahrenheit.

ELTC-14 Display / User Interface

LED (1) ON

Heater Relay ON

LED Blinking

Function Delayed

Increases Values

Decreases Values

Programming Mode

LED (4) ON

Alarm Relay Activated

LED blinking

Function Delayed

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Operational Description

The controller (via relay K1) will automatically switch the heating circuit ON when the actual temperature (

P01

)

falls below the control temperature setpoint (

P10

minus hysteresis

P11

In the event of an error condition, the integrated alarm relay

(K2)

switches (via the SPDT contact, configurable

as either NC or NO) to indicate one or all of the following error conditions:

- over / under temperature

- sensor-interrupt

- short circuit.

During sensor malfunction, relay K1 switches/cycles continuously on or off, depending on configuration.

Changing Parameters

To access and view the controller parameter list, press and hold the „P“ button for 3 seconds until „P10“

appears on the display

The following key strokes may be entered for viewing and adjusting* parameter

values. Refer to Page 5 of this manual for a complete list of controller parameters.

Parameter Protection

The temperature control set point (high/low set points, or P13 and P14 respectively) may be changed without

passcode protection, and set points may be changed using the procedure described above.. All other

parameters are passcode protected. The display will prompt when a passcode is required (display will indicate

„C00“).

To enter the passcode, use the arrow keys to enter the passcode number (C42). Confirm by pressing the “P”

button.

If no key is entered, the access code request is automatically cancelled after approx. 1 minute and the display

returns to the normal view.

•Press and hold „P“ for 3 sec.

- Parameter No. appears (P10)

•„▲ / ▼ “

- Pushing the ‘up’ or ‘down’ arrows allow for scrolling through the parameter list (P1 – P34)

•Press „P“ again

- Displays the programmed/set parameter value

•„▲ / ▼ “

- Pushing the ‘up’ or ‘down’ arrows will ‘increase’ or ‘decrease’ the parameter values accordingly

•Press „P“ again

- Saves the new value/set point, the display reverts back tothe adjusted parameter No.

•Press „▲ / ▼“ until „P1“ appears, then press “P” (or wait for less than 1 Min.)

Exits the settings menu

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Autoscrolling

Menu values scroll through the menu by keeping the ‚▲ / ▼'-keys depressed .

Error Messages

When an error condition occurs, the display will indicate the error code after an approx. 20 second delay.

Error Code Messages

E01 RTD/Pt100 temp sensor short circuit or temperature below -76°F (-60°C)

E02 RTD/Pt100 temp sensor interrupt (open) or temperature above 770°F (410°C)

E03 Temp. sensor third wire missing/not connected or Resistance (R) is equal to or above 10 ohms

C00 passcode entry required

E07 Alarm/Fault relay K1 open

E08 Alarm/Fault relay K1 short circuit

E09 Internal error

Error codes E07...E09: controller fault condition.

Check device/controller type

After controller is energized, the controller model/type number appears (

C14 for model ELTC-14

), followed by

a 3 second delay after which the actual temperature will be displayed.

Switching Temperature Scales (degF to deg C / deg C to deg F)

Changing sensor probe type (P20) automatically changes the temperature scale and associated set

points to the respective temperature scale (e.g. sensor type 0 and 1 display in deg C / sensor type 2

and 3 display in deg F).

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Parameter List and Description

Releasing Relay Mode

P01

Actual Sensor Temp

. °C/°F (disp.only)

P10

Control Setpoint

Affects relay 1, range P13...P14, [41°F/5°C]

P11

Switching hysteresis from set point (

P10)

range 2..10K [2K]

P12

Min. Relay Idle Time (Relay K1)

0..30.0 Min., [0.0 Min], resolution 0.1 min.

P13

Highest Adjustable Control Setpoint

Range min (see P14) to max 734°F (390°C), [734°F/390°C]

P14

Lowest Adjustable Control Setpoint

Range -58°F (-50°C) to max (see P13), [32°F/0°C]

P20

Sensor/Probe Type

0 = RTD/Pt100, 3-wire, °C (Resolution 1K)

[1] = RTD/Pt100, 2-wire, °C (Resolution 1K)

2 = RTD/Pt100, 3-wire, °F (Resolution 2°F)

3 = RTD/Pt100, 2-wire, °F (Resolution 2°F)

P21

Sensor Correction

-30...+10K, [0]

P30

High Temp. Alarm Threshold

Min or P31 to 752°F (400°C), [752°F/400°C]

P31

Low Temp. Alarm Threshold

-76°F (-60°C) to max or P30, [-76°F/-60°C]

P32

Alarm Delay while in Operation

0...99 min., [0.0 Min., Resolution 0.1 Min.]

P33

Alarm Delay while Power-on/Energized

0...500 min., [0 min.]

P34

Alarm Relay Mode (Relay K2)

0 = Relay ON at probe fault

[1] = Relay OFF at probe fault

2 = Relay works as releasing relay

Values in […] are factory set default settings

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In this mode (when

P34 =

2) relay K2 switches independently from alarm delay timers (P32 and P33) when the

actual high/low temp threshold ranges are between high and low set points P30 and P31.

Alarm Relay Modes

(

P34

= 0 or 1): If, after initial power on, the actual temperature falls below the low temp alarm threshold (P31),

the alarm delay (P33) is used as the alarm relay to provide additional time for warm-up. In normal operating

conditions, the alarm delay P32 is used as an alarm delay parameter.

Controller Technical Data / Specifications

Controller Type/Model

ELTC-14

Operating Voltage

100…240 VAC, 50/60 Hz

Power Consumption

max. 5 W

Relay K1

20A resistive/ max 250 VAC

RelayK2

8A resistive / max. 250 VAC

ambient temperature

-13 to 131°F (-25 to.+55°C)

storage temperature

-22 to 140°F (-30 to.+60°C)

adjustable range

32 to 734°F (0 to 390°C), optional configuration

display range / resolution

-58 to 752°F (-50 to 400°C)

accuracy

± 1K, ± 2 digits -58 to 752°F (-50 to 400°C)

display / relay indicators

LED (red), 11mm

terminals

Sensor: AWG 16…24 copper wire, length (exposed wire) 3/8” (9 to 10mm)

Others: AWG 14…24 copper single-wire, length (exposed wire) 1/4”

(5…6mm)

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Installation/ Safety Instructions

•Electrical installation and commissioning must be performed by authorized personnel only

•Please note and adhere to alllocalelectrical safety requirements!

•Please note maximum ratings as per provided type label!

•Observe ingress protection (IP) and NEMA rating requirements and permitted operating

temperature when choosing the location of the controller. Recommended and preferred

mounting locations include protection against precipitation and direct sunlight. Operate

only with closed lid, tightened cable entries and installed seals

•Avoid tension and pulling stress of the cables terminatedto the controller

•If the sensor cables need to be extended, use a shielded cable and connect one end of

the shield to a ground terminal near the controller. Do not install the cable in parallel with

main AC voltage wiring. The totalsum of wire resistance should not exceed 10 ohms. When

power is connected to the controller, the front panel will display the actual sensor temperature.

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ELTC-14 Parts List and Connection Details

Controller Model

Assembly Description

Item/Part No.

ELTC-14

2 cable glands M25x1.5

2 cable glands M20x1.5

1 cable gland M12x1.5

2 O-rings M25

2 O-rings M20

1 O-ring M12

2 multiple seals 2x1/4“ (2x6 mm)

1 locking nut M20x1.5

1 locking nut M25x1.5

0620007

Dimensions

Electrical Connection

M12x1.5 : clamping range

1/8“…1/4“ (3…6.5mm)

M25x1.5 : clamping range

1/4"…1/2“ (6…13mm)

M20x1.5 : clamping range

1/4"…1/2“ (6…12mm)

100 –240VAC

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Electrical Connection Board Descriptions

X1.1

X1.2

X1.3

X2.1 AC supplyLine or Hot (L or H)

X2.2 Connection Heating Cable A

X2.3 Connection Heating Cable B

X3.1

X3.2

X3.3

X4.1 Alarm RelayCOM

X4.2 Alarm RelayNC

X4.3 Alarm RelayNO

X5.1 Connection RTD / PT100 Sensor

X5.2 Connection RTD / PT100 Sensor

X5.3 Connection RTD / PT100 3-Wire (not required when using 2-wire-sensor)

Common/ Line Neutral (N)

Common Ground Protection (PE) Connection

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