Eurotherm EFit Manuel utilisateur

User Guide

Power Controller

HA031980ENG issue 1

February 2014

EFit

Thyristor power controllers

EFit Series

For the control of heating elements up to 25 Kw

User Manual

Before installation, please read this manual thoroughly.

Eurotherm cannot be held responsible for any damage to persons

or property, or for any ﬁnancial loss or costs arising from incorrect

use of the product or failure to observe the instructions given in

this manual.

In order to maintain its ‘leading edge’ Eurotherm may have to

make changes to its speciﬁcations without advance notice.

For any further information, or if in doubt, please contact Invensys

Eurotherm, where qualiﬁed staff are available to advise or assist

you with the commissioning of your installation.

Guarantee

Two years parts and labour garantee

EFit User Manual

Contents List

1. Safety notes

1.1 Warnings

1.2 SELV

1.3 Symbols used on the instrument labeling

2. Technical speciﬁcations

3. Codiﬁcation

3.1 Ordering code

3.2 Fuses

4. Mechanical installation

4.1 Dimensional details

4.2 Front fascia

5. Electrical Installation

5.1 Terminals and connectors

5.2 Connector view

5.2.1 View on lower face

5.2.2 View on upper face

6. Control wiring

6.1 Input signal wiring

6.1.1 Remote Control

6.1.2 Local control by potentiometer

6.1.3 Local control by contacts

6.2 Auxiliary power supply (option)

7. Current limit option

7.1 Operations

7.2 Adjustment

EFit User Manuali

EFit User Manual

8. Thyristors ﬁring modes

8.1 Fast cycle

8.2 Single-cycle

8.3 Advanced Single-cycle

8.4 Phase angle

9. Power control

9.1 Description

9.2 Compensation of power supply ﬂuctuations

10. Current derating

EFit User Manual

1. SAFETY NOTES

1.1 WARNING

BRANCH-CIRCUIT PROTECTION

AND SAFETY OVERLOAD PROTECTION

This product does not contain any branch-circuit protection or

internal safety overload protection. It is the responsibility of the

user to add branch-circuit protection upstream of the unit. It is

also the responsibility of the user to provide external or remote

safety overload protection to the end installation.

Such branch-circuit and safety overload protection must comply

with applicable local regulations.

UL: The above mentioned branch-circuit protection is necessary

for compliance with National Electric Code (NEC) requirements.

If opening of the branch circuit protective or the supplemental fuses

(high speed fuse) EFit shall be examined and replaced if damaged.

It is strongly recommended that the installing authority includes

independent, system-safety mechanisms to protect both

personnel and equipment against injury or damage, and that

such safety mechanisms be regularly inspected and maintained.

Consult the EFit supplier for advice.

The instrument shall have one of the following as a disconnecting

device, ﬁtted within easy reach of the operator, and labelled as

the disconnecting device.

a. A branch-circuit protection (circuit breaker or fuse which

complies with the requirements of IEC60947-1).

b. A separable coupler which can be disconnected without the

use of a tool.

EFit User Manual

1. Any interruption of the protective conductor outside the

equipment, or disconnection of the protective earth terminal is

likely to make the device dangerous under some fault conditions.

Intentional interruption is prohibited.

2. Before carrying out any wiring to the unit it must be ensured that

all relevant power and control cables, leads or harnesses are isolated

from voltage sources. Wire conductor cross sections must comply

with table 9 of IEC60947-1 (or NEC, Article 310 Table 310-16).

3. This equipment is not suitable for isolation applications, within

the meaning of IEC60947-1.

4. The heatsink becomes hot whilst the unit is running, and it can take

up to 15 minutes to cool after the unit is shut down. The heatsink

temperature may rise above 50 degrees Celsius. If operators are

likely to come into contact with such heatsinks, adequate warnings

and barriers must be put in place in order to prevent injury.

Before any other connection is made, the protective earth terminal

shall be connected to a protective conductor by a listed ring crimp.

Whenever it is likely that protection has been impaired, the

unit shall be made inoperative, and secured against accidental

operation. The manufacturer’s nearest service centre should be

contacted for advice.

Any adjustment, maintenance and repair of the opened apparatus

under voltage, is forbidden for safety reasons.

Units are designed to be installed in a cabinet connected to the

protective earth according to IEC60364-1 and IEC60364-5-54 or

applicable national standards. The cabinet must be closed under

normal operating conditions. Adequate air conditioning/ ﬁltering/

cooling equipment must be ﬁtted to the cabinet in order to prevent

the ingress of conductive pollution, the formation of condensation etc.

EFit User Manual

5. Units are designed to be mounted vertically. There must be

no obstructions (above or below) which could reduce or hamper

airﬂow. If more than one set of units is located in the same

cabinet, they must be mounted in such a way that air from one

unit is not drawn into another.

6. Signal and power voltage wiring must be kept separate from

one another. Where this is impractical, shielded cables should be

used for the signal wiring.

7. If the equipment is used in a manner not speciﬁed by the

manufacturer, the protection provided by the equipment might

be impaired.

8. This product has been designed for environment A (Industrial).

Use of this product in environment B (domestic, commercial

and light industrial) may cause unwanted electromagnetic

disturbances in which cases the user may be required to take

adequate mitigation measures.

EFit User Manual

1.2 SELV

Safety Extra Low Voltage. This is deﬁned (in IEC60947-1) as an

electrical circuit in which the voltage cannot exceed ‘ELV’ under

normal conditions or under single fault conditions, including

earth faults in other circuits. The deﬁnition of ELV is complex as it

depends on environment, signal frequency etc. See IEC 61140 for

further details. The input connector (pin 5 to 7) is compliant to the

SELV requirements.

1.3 SYMBOLS USED IN THE INSTRUMENT LABELING

One or more of the symbols below may appear as a part of the

instrument labeling.

Protective conductor terminal

AC supply only

Underwriters Laboratories listed

mark for Canada and the US

Risk of electric shock

Refer to the manual for instructions

Precautions against static electrical discharge

must be taken when handling this unit

Do not touch Heatsink

Hot Surface

Declaration of conformity

to European standard

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