Bray 70-003-113-536 Series Manuel utilisateur

SERIES 70 Metric

2ND GENERATION ELECTRIC ACTUATOR

METRIC VERSION - OPERATION AND MAINTENANCE MANUAL

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

Table of Contents

Safety Instructions - Deﬁnition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Hazard-Free Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Qualiﬁed Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Part Numbering System Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Electrical Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

General Electrical Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mechanical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Manual Override Operation (Declutchable) . . . . . . . . . . . . . . . . . . . . . . . . .4

Pre-Installation Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Mounting to a Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Multiple Actuator (Parallel) Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Actuator Diagram without I.R.B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Travel Limit Switch and Mechanical Travel Stop Adjustment . . . . . . . . . . . . . . . . 5

S70 On/Off Actuator with Interposing Relay Board (I.R.B.) . . . . . . . . . . . . . . . . .5

Close Travel Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Open Travel Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Field or Factory Installable Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Torque Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Torque Switch Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Servo-Pro Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Servo Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

External Signal Feedback Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Set the Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Auxiliary Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Auxiliary Switch Conﬁguration Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Typical Wiring Diagram: On/Off Service . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Typical Wiring Diagram: Modulating Service . . . . . . . . . . . . . . . . . . . . . . . 14

Adjustments, Calibration and Status LED of Servo Pro . . . . . . . . . . . . . . . . . . 15

Receptacles (Quick Connectors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Spinner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Local Control Station (Single Phase Powered Actuators) . . . . . . . . . . . . . . . . . 17

Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Basic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Actuator Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

S70 Servo Pro Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Appendix C - Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Series 70 - Housing Size 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Series 70 - Housing Size 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Series 70 - Housing Size 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Series 70 - Housing Size 180 for 3:1 Gear Box . . . . . . . . . . . . . . . . . . . . . . . 24

Series 70 - 3:1 Gear Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

For information on this product and other Bray products

please visit us at our web page - www.bray.com

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

HAZARD-FREE USE

This device left the factory in proper condition to be

safely installed and operated in a hazard-free manner. The

notes and warnings in this document must be observed

by the user if this safe condition is to be maintained and

hazard-free operation of the device assured.

Take all necessary precautions to prevent damage to

the actuator due to rough handling, impact, or improper

storage. Do not use abrasive compounds to clean the

actuator, or scrape metal surfaces with any objects.

The control systems in which the actuator is installed must

have proper safeguards to prevent injury to personnel, or

damage to equipment, should failure of system components

occur.

QUALIFIED PERSONNEL

• A qualified person in terms of this document is one

who is familiar with the installation, commissioning

and operation of the device and who has appropriate

qualifications, such as:

• Is trained in the operation and maintenance of

electric equipment and systems in accordance with

established safety practices

• Is trained or authorized to energize, de-energize,

ground, tag and lock electrical circuits and equipment

in accordance with established safety practices

• Is trained in the proper use and care of personal

protective equipment (PPE) in accordance with

established safety practices

• Is trained in first aid

• In cases where the device is installed in a potentially

explosive (hazardous) location – is trained in

the operation, commissioning, operation and

maintenance of equipment in hazardous locations

WARNING

The actuator must only be installed, commissioned,

operated and repaired by qualied personnel.

The device generates large mechanical force during

normal operation.

All installation, commissioning, operation and maintenance

must be performed under strict observation of all applicable

codes, standards and safety regulations.

Reference is specically made here to observe all

applicable safety regulations for actuators installed in

potentially explosive (hazardous) locations.

Safety Instructions - Deﬁnition of Terms

READ AND FOLLOW THESE INSTRUCTIONS

SAVE THESE INSTRUCTIONS

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death

or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor

or moderate injury.

NOTICE

used without the safety alert symbol indicates a potential situation which, if not

avoided, may result in an undesirable result or state, including property damage.

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

INTRODUCTION

The Bray Series 70 is a quarter turn electric actuator

with manual override for use on any quarter turn valve

requiring up to 2034 Nm of torque. Operating speeds

vary between 6 to 110 seconds.

PRINCIPLE OF OPERATION

The Series 70 actuator is divided into two internal

sections; the power center below the switchplate, and

the control center above the switchplate. Below the

switchplate the capacitor and gearmotor with its spur

geartrain drive a non-backdriveable worm gear output. The

override mechanism for manual operation is also housed

here. Above the switchplate is where user required,

readily accessible components are placed. The camshaft

assembly, limit switches, terminal strips, torque switches,

heater, and servo are all placed here for easy access.

External to the unit are adjustable mechanical travel

stops, a large easy to read indicator, the unique manual

override handwheel and dual conduit entry ports. The

external coating is a high quality polyester powder coat

which has exceptional UV as well as chemical resistance.

ELECTRICAL OPERATION

The motors used in the Bray Series 70 are either

permanent induction split capacitor design (single

phase AC power), SCI (Three Phase AC Power) or PM

(DC Power). Travel limit switches are mechanical form

(SPDT) with contacts rated at 10 amp (0.8 PF), 1/2 HP

125/250 VAC. In cases where the torque capacity of the

unit is exceeded to the point where the motor stalls and

overheats, a thermal protector switch built into the motor

windings will automatically disconnect the motor power.

Once the motor cools sufficiently the thermal protector

switch will reset. Optional torque switches are available

in all units to prevent the possibility of stalling the motor,

thus reducing the necessity for an inoperable thermal

cooldown period. Torque switches installed by Bray are

factory adjusted to the output torque rating of the unit

using electronic torque testing equipment.

NOTICE

Torque switches are not eld adjustable. Adjustment of torque

switches in the eld will void warranty.

GENERAL ELECTRICAL SCHEMATIC

NEUTRAL

LIVE

OPEN

DOUBLE

OVERRIDE

SWITCHES

THERMAL PROTECTOR

OPEN

CAPACITOR

TORQUE

SWITCHES

(OPTIONAL)

TRAVEL

LIMIT

SWITCHES

SINGLE

PHASE

POWER

SUPPLY

FIELD WIRING

COM

N.C.

N.O.

CAMS

MOTOR

COM

N.C.

N.O.

COM

N.C.

N.O.

COM

N.C.

N.O.

COM

N.C.

N.O.

COM

N.C.

N.O.

NOTE: this is only a reference. For the actual wiring diagram refer to

the diagram placed inside the actuator cover.

MECHANICAL OPERATION

Mechanically, the ratio of the gearmotor determines the

speed of the unit. The gearmotor utilizes high efficiency

spur gears with various ratios for the different speeds.

Initial gear reduction through the spur gears is then

transferred to the worm shaft. The final gear reduction

and output is through a non-backdriveable worm gear

set. Positioning is determined by an indicator-cam shaft

linked to the output shaft. In the declutchable condition

the manual override drives the worm shaft when engaged.

PART NUMBERING SYSTEM REFERENCE CHART

SerieS Torque Code Speed produCT STyle VolTage Trim

70 AAA X 113 Y Z 536

HouSing

Size parT number Torque

(Nm)

Speed, ¼Turn

(Seconds)

Supply

(Z Voltage)

6 70-003X-113YZ-536 34 30/15 0/2/4

6 70-006X-113YZ-536 68 30 0/3/4

12 70-008X-113YZ-536 90 30/15/6 0/4/8

12 70-012X-113YZ-536 136 30/15/6 0/4/9

12 70-020X-113YZ-536 226 30/15 0/2/3/4/5/6/7/8

30 70-030X-113YZ-536 339 30/18 0/2/4/5/6/7/8

30 70-050X-113YZ-536 565 30/18 0/2/3/4/5/6/7/8

30 70-065X-113YZ-536 735 30 0/2/4/5/6/7/8

180 70-13WX-113YZ-536 1469 110 0/4

180 70-18WX-113YZ-536 2034 110 0/4

Use this chart as a guide to interpret the S70 electric actuator part number.

Note: Not all combinations are possible.

W - DESIGNATES THE OUTPUT BORE DIAMETER

02.5 Inches

11.97 Inches

X - DESIGNATES THE SPEED

X: 0 1 2 3 4 5 6

Sec: 60 30 15/18 10 6 8 110

Y - DESIGNATES STYLE

MBasic Unit - Declutchable

NWith Interposing Relay Board*

P24VAC Unit with 24VAC Servo

*Only available for 120VAC or 220VAC On/Off units

Z - DESIGNATES THE VOLTAGE

Z: 0123456789

Voltage:

120VAC

12VDC

24VDC

24VAC

220VAC

380V

3-PH

400V

3-PH

440V

3-PH

480V

3-PH

208V

3-PH

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

MANUAL OVERRIDE OPERATION (DECLUTCHABLE)

The manual override operates similar to a watch

adjusting knob. To engage the manual override, simply

pull the handwheel to its outermost position. A yellow

stripe is revealed for visual indication that the unit

cannot run electrically. The two handwheel positions,

engaged and disengaged, are held in place with the use

of spring plungers. The handwheel remains in position

until physically moved. Rotating the handwheel in the

clockwise direction will rotate the output shaft in the same

clockwise (closed) direction and vice-versa.

CAUTION

A label on the handwheel hub warns users not to exceed

a specic rim pull force, for each size of actuator. If the rim

pull force is exceeded, the roll pin securing the handwheel

onto the manual override shaft is designed to shear, thus

preventing more serious internal gearing damage.

PRE-INSTALLATION STORAGE

Actuators are not weatherproof until properly installed

on the valve or prepared for storage. Bray cannot accept

responsibility for deterioration caused on-site once the

cover is removed.

NOTICE

Units are shipped with two metal screw-in plugs to prevent

foreign matter from entering the unit. To prevent condensation

from forming inside these units, maintain a near constant

external temperature and store in a well-ventilated, clean,

dry room away from vibration.

For units with an internal heater, power should be supplied

to the heater via conduit entry and appropriate sealing gland.

Store units on a shelf or wooden pallet in order to protect

against oor dampness.

Keep units covered to protect against dust and dirt.

INSTALLATION

MOUNTING TO A VALVE

All Bray Series 70 electric actuators are suitable for direct

mounting on Bray butterfly valves. With proper mounting

hardware, the S70 actuator can be installed onto other

quarter-turn valves or devices.

NOTICE

The standard mounting position for the actuator is to orient

the unit with its handwheel in a vertical plane and parallel to

the pipeline. If the actuator is to be mounted on a vertical pipe,

it is recommended that the unit be positioned with the conduit

entries on the bottom to prevent condensation from entering

the actuator by way of the conduit. In all cases, the conduit

should be positioned to prevent drainage into the actuator.

The actuator should be mounted to the valve as follows:

1. Manually operate the actuator until the output shaft of

the actuator is in line with the valve stem. If possible,

select an intermediate position (i.e. valve disc/stem

and actuator both half open).

2. Place the proper adapter, if required, onto the valve

stem. It is recommended that a small amount of

grease be applied to the adapter to ease assembly.

3. Mount the actuator onto the valve stem. It may be

necessary to swing or manually override the actuator

to align the bolt patterns.

4. Install the furnished mounting studs by threading

them all the way into the actuator base.

5. Fasten in place with the furnished hex nuts and

lock washers.

FIELD WIRING

WARNING

Turn off all power and lock out service panel before installing

or modifying any electrical wiring.

Each actuator is provided with two (2) conduit entries

(one for power and one for control).

1. The motor full load current is noted on the nameplate

of the actuator. The terminal strip will accept wire

sizes ranging from 14 to 22 AWG (14 to 24 AWG

for the servo).

NOTICE

18 AWG minimum wire is recommended for all eld wiring.

Note that the optional heaters use approximately 0.5

amps at 110 volts.

2. All actuators have their applicable wiring diagram

attached to the inside of the cover. Field wiring

should be terminated at the actuator terminal strip

in accordance with this wiring diagram.

NOTICE

The conduit connections must be properly sealed to maintain

the weatherproof integrity of the actuator enclosure.

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

The back feeding of one actuator by another one wired

in parallel is eliminated by using the I.R.B.

If actuator is running Open and customer switches

“instantaneously” to run Closed, the Open relay will take

time to ‘drop-out’ and the Close relay will take time to

‘pull-in’ this time lapse is ~ 40ms. The time delay provided

by the I.R.B. will protect the switches and gears from

the controller’s instantaneous command signal reversal.

Current draws and field wirings are not affected by

adding I.R.B.

S70 120VAC I.R.B., auxiliary switch, heater, and torque

switch option are UL certified units.

MULTIPLE ACTUATOR (PARALLEL) WIRING

CAUTION

Do not connect more than one S70 actuator which do not

have I.R.B. installed to a single SPDT switch. A voltage is

present on the opposite winding to the powered one. If this

winding is connected to another as shown in the INCORRECT

diagram it will interfere with the motor performance. Use a

multiple pole switch as shown in the CORRECT diagram.

ACTUATOR DIAGRAM WITHOUT I.R.B.

CAUTION

Do not reverse motor instantaneously when it is still running.

Reversing direction to actuator motor when it is running can

cause damage to motor, switches and gearing. Directional

control switching can be done by PLC in 20ms or by a small

relay in 46ms. Therefore time delay of 1s has to be incorporated

into the control scheme to avoid damage.

TRAVEL LIMIT SWITCH AND MECHANICAL TRAVEL

STOP ADJUSTMENT

CAUTION

The electrical travel switches must be set to activate

(depress) prior to reaching the mechanical travel stops.

The cams are color coded (green for open, red for closed).

NOTE: Manual travel stops are designed to prevent

manual overtravel from turning the handwheel, not to stop

the electric motor. The travel stops have an adjustment

range of approximately 10-degrees.

S70 ON/OFF ACTUATOR WITH INTERPOSING RELAY BOARD (I.R.B.)

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

CLOSE TRAVEL SWITCH ADJUSTMENT

1. Loosen the mechanical stop for the closed position

and back it off so that it does not interfere with

actuator travel (closed stop located on right when

viewed from travel stop side of actuator).

2. Remove the indicator rotor by pulling up it straight

up away from the indicator shaft. This will expose

the machined groove on the end of the cam shaft,

which is the reference to the valve disc position.

NOTE: For Housing Size 180, ignore steps 2 and 6. The

valve position indicator plate on the lower gearbox is the

reference to the valve position.

3. Manually operate the actuator handwheel clockwise

until the valve reaches the desired fully closed

position.

4. Rotate the red adjusting knob by hand or with a flat

head screwdriver until the cam lobe just activates

(depresses) the switch from a clockwise direction.

5. With the travel switch in the closed position, rotate

the handwheel clockwise ½ turn for Housing Size

6, 1 turn for Housing Size 12, ½ turn for Housing

Size 30, and 2 turns for Housing Size180.Adjust the

closed travel stop bolt until it bottoms against the

output gear and lock it in position with the locknut.

6. After all travel switch adjustments have been

completed, replace the indicator rotor and secure

the actuator cover.

OPEN TRAVEL SWITCH ADJUSTMENT

1. Loosen the mechanical stop for the open position and

back it off, so that it does not interfere with actuator

travel. The open stop is located on the left, when

viewed from travel stop side of actuator.

2. Remove the indicator rotor by pulling it straight up

away from the indicator shaft. This will expose the

machined groove on the end of the cam shaft, which

is the reference to the valve disc position.

NOTE: For Housing Size180, ignore steps 2 and 6. The

valve position indicator plate on the lower gearbox is the

reference to the valve position.

3. Manually operate the actuator handwheel

counterclockwise until the valve reaches the desired

open position.

4. Rotate the green adjusting knob until the cam

lobe just activates (depresses) the switch from a

counterclockwise direction.

NOTICE: All continuous duty actuators have a cam locking

screw. Cam locking screw must be slackened before cam

adjustments and re-rightened after cam adjustments.

NOTE: It is possible that the rotation of one cam will

move the other cam. If this occurs, hold the other knobs

or cams during adjustment.

5. With the travel switch in the open position, rotate the

handwheel counterclockwise ½ turn for Housing Size

6, 1 turn for Housing Size 12, ½ turn for Housing

Size 30, and 2 turns for Housing Size 180. Adjust

the open travel stop bolt until it bottoms against the

output gear and lock in position with the locknut.

6. After all travel stop adjustments have been

completed, replace indicator rotor and secure the

actuator cover.

NOTICE: All continuous duty actuators have a cam locking

screw. Cam locking screw must be slackened before cam

adjustments and re-tightened after cam adjustments.

UPPER GREEN

“OPEN” CAM

LOWER RED

“CLOSE” CAM

POT DRIVE GEAR

“BLACK” NOT SHOWN

FOR CLARITY REASONS

CAM ADJUSTMENT KNOB

(ONLY ADJUST IF LOCKING

SCREW IS SLACKENED)

CAM

LOCKING

SCREW

NOTE: It is possible that the rotation of one cam will move

the other cam. If this occurs, hold the other knobs or cams

during

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

DISASSEMBLY AND ASSEMBLY

Tools required:

See Appendix A for a complete list of basic tools.

PROCEDURE

WARNING

Turn off all power and lock out service panel before installing

or modifying any electrical wiring.

1. Disconnect motor wires from the main terminal strip

(motor neutral, open, and close).

2. Remove the switchplate by unscrewing the seven

Phillips head mounting screws. The switchplate

should lift out as an assembly with the camshaft

attached.

3. The switchplate can be independently disassembled.

4. To remove the Gearmotor, first disconnect the motor

leads which run to the capacitor, and unscrew the

mounting screws for Housing Size 6 (two lower,

one upper) for other Housing Sizes (four lower, one

upper). The motor can now be removed vertically out

of the unit. Note: do not misplace the alignment pin.

5. To remove the worm shaft spur gear, remove the

spring pin using a 2.5 mm punch, then slide the gear

off the end of the worm shaft for Housing Sizes 6

and 12. Remove bowed E-clip retainer for Housing

Size 30-180.

6. To remove the output drive worm gear, back off both

mechanical travel stops. Remove the retaining ring

and thrust washer, then lift the output drive worm

gear out of its base.

7. The handwheel is held by a spring pin.

CAUTION

Further disassembly of the unit requires special tools and

procedures, and thus will not be covered in this manual.

NOTE 1: Assembly is the opposite of removal

NOTE 2: Pictures shown for Housing Size 6 are typical

for all sizes

BRAY Series 70 Metric Electric Actuator

Operation and Maintenance Manual

FIELD OR FACTORY INSTALLABLE OPTIONS

TORQUE SWITCHES

Torque switches are a factory installed and calibrated

option available for all Series 70 units. Installation is

simple, but due to the requirement for special calibration

equipment, it is not recommended for field installation.

In fact, modifying the factory torque setting voids the

actuator warranty. Removal of the switchplate invalidates

factory calibration

The unique mechanism is extremely accurate and has

excellent repeatability. The worm is pinned to the worm

shaft, which is held in position with a stack of disc springs

at both ends. The torque transmitted through the worm

to the output worm gear acts directly against the disc

springs, which compress proportionately. The worm and

worm shaft shift longitudinally as a result.

A specially designed drive lever and pin is incorporated

into the worm, providing the profile for the torque switching

mechanism. A drive lever & pin rides in the worm gear

torque sensor groove, and in turn drives a cam. The

cam then actuates

its electrical switch,

which interrupts the

power to the motor

winding when the

torque exceeds

the setting. The

motor can still be

powered to run in the

opposite direction,

the switch will release

automatically.

TORQUE SWITCH MECHANISM

Switching Mechanism

Ce manuel convient aux modèles suivants

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