Rotork CVL 500 User manual

Linear Control Valve Actuator (CVL)

Installation & Maintenance Instructions

Publication P170E Issue 04/09

CVL Range

Established Leaders in Valve Actuation

Electric Actuators and Control Systems

This Manual contains important safety

information. Please ensure it is thoroughly read

and understood before installing, operating or

maintaining the equipment.

Established Leaders

in Valve Actuation Technology

Contents

General Information 4

Hazardous Area Approvals 5

Health & Safety 6

Storage 7

Operating your CVA Actuator 8

Installation & Setup Guide 12

Mounting the Actuator 14

Cable Connections 15

Commissioning 17

Diagnostics 45

Building on Rotork’s historical success with

innovative technology, the CVL offers a highly

accurate and responsive method of automating

control valves without the complexity and cost

of a pneumatic supply. With an increased focus

on production costs and efﬁciency, accurate

control of the process variable is paramount.

With resolution ﬁgures better than 0.1% and the ability to

eliminate position overshoot, the Rotork CVA range helps to

maximize product quality and plant capacity.

CVL range actuators are self contained, purpose designed

and built for continuous remote electrical operation of

control valves.

This Manual covers the Linear Control valve

Actuator Range (CVL).

Models: CVL 500 & CVL 1500

Refer to Rotork Publication P110E for full specification.

The actuator comprises:

•DC brushless electric motor.

•Reduction gearing with linear output shaft.

•Motor controller with speed, travel and thrust limitation.

•Electronic logic controls and monitoring facilities housed

in a double sealed watertight enclosure.

•Hazardous area certiﬁcation meeting international and

national requirements.

All thrust and position settings as well as conﬁguration of the

actuator are made using a non-intrusive Bluetooth™device,

typically a PDA (not supplied).

Bluetooth™PDA Enlight software is available for free

download from www.rotork.com.

This manual has been produced to enable

a competent user to install, operate, adjust

and inspect the Rotork Range of Control

Valve Actuators.

The electrical installation, maintenance and use of these

actuators should be carried out in accordance with the

National Legislation and Statutory Provisions relating to

the safe use of this equipment applicable to the site of

installation.

For the UK: Electricity at Work Regulations 1989 and the

guidance given in the applicable edition of the ‘IEE Wiring

Regulations’ should be applied. Also the user should be fully

aware of their duties under the Health and Safety at Work

Act 1974.

For the USA: NFPA70, National Electrical Code®is applicable.

The mechanical installation should be carried out as outlined in

this manual and also in accordance with any relevant national

standard codes of practice. If the actuator nameplate indicates

that it is suitable for use in a Potentially Explosive Atmospheres

(Hazardous Areas) then the actuator is suitable for use in

Zone 1 and Zone 2 (or Div 1 and Div 2) hazardous area

classiﬁcations, as deﬁned by the actuator’s nameplate marking.

Any equipment connected to the actuator should be of

an equivalent (or better) hazardous area certiﬁcation. The

installation, maintenance and use of the actuator installed in

a hazardous area must be carried out by a competent person

and in accordance with all relevant codes of practice for the

particular Hazardous Area certiﬁcation.

Any inspection or repair of Hazardous Area approved

actuators should not be undertaken unless it conforms to

National Legislation and Statutory Provisions relating to the

speciﬁc Hazardous Area. Only Rotork approved actuator

replacement parts should be used. Under no circumstances

should any modiﬁcation or alteration be carried out on the

actuator, as this could invalidate the conditions under which

its certiﬁcation was granted.

Access to live electrical conductors is forbidden in a Hazardous

Area unless it is done under a special permit to work,

otherwise all power should be isolated and the actuator

moved to a non-hazardous area for repair or attention.

Enclosure Materials

The enclosures on the Rotork Range of Control Valve

Actuators are manufactured from aluminium alloy with

stainless steel fasteners and a polycarbonate window. The

Local Control Knob and Manual Override Knob (when ﬁtted)

are manufactured from a Polycarbonate/PBT plastic blend.

There is a potential electrostatic charging hazard associated

with these components and therefore they must only be

cleaned with a damp cloth.

The user must ensure that the operating environment and any

materials surrounding the actuator cannot lead to a reduction

in the safe use of, or the protection afforded by, the actuator.

Where appropriate the user must ensure the actuator is

suitably protected against its operating environment.

Should further information and guidance relating to the safe

use of the Rotork Control Valve Actuator Range be required,

it will be provided on request.

General Information

Established Leaders

in Valve Actuation Technology

Hazardous Area Approvals

CVL Linear Actuator

Refer to the actuator nameplate for it’s specific approval details.

The CVA is built in accordance with: -

European—Hazardous Area ATEX (94/9/EC) II 2 GD c

Ex d IIB T4 Gb, Ex t IIIC T120°C Db

EN60079-0, EN60079-1, EN13463-1,

EN13463-5 and EN61241-1

Ambient Temperature Range: