Rockwell Automation 810 User Manual

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Page 1

INSTRUCTIONS

INVERSE TIME CURRENT RELAYS

BULLETIN

810

IMPORTANT - Save for future

reference.

Bulletin 810

with a maximu continuous

of 60 amperes.

Cross sectional view.

Moving parts are shaded.

DESCRIPTION

rela

OPERATING

COIL

CORE

DASHPOT

SILICONE

FLUID PISTON

-The Bulletin 810 is a

magnetically operated current relay, with time delay, for use on AC or DC applications. It has inverse time-current characteristics which are dependent. upon the viscosity of the fluid in the dashpot. However, unlike thermal relays, minimum operating current is independent of ambient temperature change or cumulative heating. The relays are supplied as standard with

a normally

closed (NC) contact and an automatic reset. Available options are a normally open (NO) contact, hand reset, and bifurcated contacts with a clear plastic (poly-carbonate) cover. Tripping current and time delay are adjustable.

TIME DELAY TRIP - Current relays are

used when it is desirable to take a motor

off the line in a certain period of time after

a predetermined load condition is reached. A typical application would be starting a large motor, where the Bulletin 810 is used to automatically open the motor starter control circuit if the motor is

CONTACT RATINGS -

Max AC Voltage

60 or 50

120 240 480 1.5 10

600 1 12 1 1.2

not up to speed in the maximum acceleration time allowed. In this and other applications of the automatic reset type

relay, three wire control must be used,

with a provision for interrupting the cur-

rent through the relay coil immediately after the relay trips (see typical schema-

tic diagram on page 3). On two wire con-

trol applications such as float switches, pressure switches or thermostats, a hand reset type overload relay must be used to provide this protection to the coil. The relay can carry its rated continuous current in the non-tripped position only.

OPERATION -

letin 810 operating coil imparts an electromagnetic force on the movable core. The vertical position of the core in the coil is adjustable, thereby providing an

adjustable trip point. When the coil cur-

rent increases to the trip point, the core

raises to operate the contact mecha-

nism. Time delay is provided by a sili-

cone fluid dashpot mounted below the

core and coil assembly. An adjustable

valve in the dashpot piston provides for

time delay adjustment.

AC DC

Maximum Contact Rating Per Pole

NEMA Rating Designation A600

Continuous

Range

Amperes

Make Break

Carrying Current

Current through the Bul-

NORMAL CURRENT - The electro-

magnetic force caused by normal continuous current through the operating

coil is not great enough to lift the core

and piston. The relay remains

inoperative.

OVERCURRENT- When the current

through the operating coil increases

beyond the trip point, the resultant elec-

tromagnetic force causes the core and

piston to raise. Upward motion is dampened through the use of the silicone fluid dashpot The core rises slowly until the

Voltage

Volt-amperes

Make

Break

7200 720 115-125

7200 720 230-250

7200 720 550-600 0.1

7200 1 720

Ampere

Rating

00.4

0.2

piston reaches an increased diameter in the dashpot, where it is free, to trip the contact with a quick action. Time and current required to complete this cycle are inversely related as shown by the time-current characteristics curves on page 2.

RESET - Standard models of the Bulle-

tin 810 are automatically reset as soon

as the current through the coil is interrupted or decreased to approximately 20% of the tripping current. The core is designed to drop quickly, returning the contacts to their normal position. A check valve allows the piston to bypass the fluid in its return to the bottom of the dashpot. The action of hand reset models differs only in that the contacts do not reset until a lever on the contact block is operated. There is no waiting period as with thermal relays.

EFFECTS OF AMBIENT TEMPERATURE

The minimum operating current

(100% on the time-current characteristics graph) is independent of ambient temperature at the relay. However, the

operating time at overcurrent varies

directly to the viscosity of the silicone fluid. Since the viscosity varies inversely

with ambient temperature, the operating

time is also inversely affected. The time temperature table shows the correction

factors to be applied to the operating

times for various temperatures.

TIME TEMPERATURE RELATIONSHIP

( +

40°C

Reference)

Ambient

Temperature

Operating Time

Correction Factor

Supersedes Publication 810-5.0, Dated December, 1980

(“C)

2.25 1.80 1.45 1.20 1.0

Publication 810-5.0 - April, 1983

+lO"

‘”

+20" +30" +40"

Page 2

OPERATING CURRENT ADJUSTMENT - stamped on the nameplate. After the

(Not necessary if factory set to user’s

specified value). The minimum operat-

ing current (100% on the time-current

characteristics graph) is adjusted by

changing the vertical position of the core

within the operating coil. Calibration

lines on the core correspond to current

values in the table on Page 3 and

core and dashpot assembly is removed,

the core is turned up or down on the piston’s threaded stem till the line cor responding to the desired operating cur-

rent is in line with the top edge of the

dashpot Currents other than those indi-

cated by the lines are possible by

interpolation.

NOTE: If electrical tests are made of cur-

rent calibrations they should be done without fluid in the dashpot (clean

and dry.)

SERIES B RELAY OR SERIES B DASHPOTO SERIES A RELAY OR SERIES A DASHPOT 0

ARACTERISTIC AT

+4R"C

000 ’

8001

0.1 ;

100 200 300 400 500 600

Percent of Minimum Operating Current

10000

TlME-CURRENTCHARACTERlSTICSAT+4O"C

4000

I I I

I I I I

I I

0.1 '

0 100

Percen

of Minimum Operating Current

I I I

200 300 400 500

600

With Series B FluidWith Series B Fluid

Red Fluid

0.2

,>I

0.1 ' 0 100 200 300 400 500 600

Percent of Minimum Operating Current

0 Series B Dashpots are identified by the rib along the side of the dashpot. Refer to photo on back page. Series A Dashpots do not have this rib.

b-ii

I I

With Series A Fluid

100 200 300 400 500 600

Percent of Minimum Operating Current

With Series A Fluid

Page 3

ADDING DASHPOT FLUID - (See note

Page 2) The dashpot fluid is shipped separately. To add fluid, remove the core and

dashpot

assembly by unfastening the spring clamp. Remove the dashpot cover by pulling the core straight out of the dashpot Remove and discard red plastic shipping spacer if present. Add the silicone fluid with the dashpot cover

removed, with the piston and core in place. Fill the dashpot to the top of the three round projections on the piston. See illustration below. The fluid must be free of dirt or grit, and the dashpot and piston must be absolutely clean.

Check fluid level periodically,

OPERATING TIME ADJUSTMENT - Un-

less ordered with a specified time delay setting, the relays are set for minimum time delay when shipped. To increase the time delay, remove the piston from the dashpot and decrease the opening

of the adjustment valve by rotating its cover counterclockwise. See illustration

below.

CAUTION: Do not attempt to

change the position of the check valve cover, which holds the steel balls of the check valve in

place.

The range of operating times possible

with the Bulletin 810 is shown by the time-current characteristics curves on

Page 2. Note that the curves cover all possible combinations of two different dashpot constructions and four different fluids. Series A dashpot components

and Series A red and blue fluids are no

longer available, but can continue to be

used as indicated. Series B blue fluid is

supplied as standard. Higher viscosity

“clear” fluid will be supplied when

requested.

Each area is bounded by curves that

represent the operating times with the

valve fully opened and fully closed. In-

termediate settings must be verified by

electrical tests.

COIL CURRENT

The maximum continuous current rating of the coil appears on the relay nameplate. The current at which the relay is set to trip should not exceed this value except when an additional device protects the coil against sustained overcurrent. To avoid relay damage, current through the relay coil must be interrupted after

the relay trips. Relay can carry rated continuous current in the non-tripped position

only.

Coils

Catalog

4 6

Number

A03A A04A

A05A

A06A

A07A A08A A09A

A10A A11A A12A

A13A

A15A

A16A

Coil

Current

Amps.

28 40

56 60

A17A

A18A

A19A

810-A20A

A21A A22A A23A A24A

216 259

320 320 320

0 Catalog numbers are for single relavs in the ooen tvoe construction. with NC contacts and an automatic

reset. The calibration table ending with letter B. C. or D.

81o-A25A

A26A

A27A

A28A A29A

AC Calibrations

1.1 1.5

1.6 2.3

2.1 3.0

3.2 4.5

4.8 6.8

6.3 9.0

8.5 12.0

10.5 15.0 15 21 21 30 25 36 30

38 54 46 65 53 75 57 81 68 97 76 108

68 97 76

108

121

98 139

114 162

also

applies to catalog numbers beginning with the letter B, C, K, or L, and

2.6 3.1

3.8 4.5

5.1 6.1

7.6 9.1

11.4 13.6

15.2 18.1

20.5 24.0

25.5 30.0 36 43

61 61 72 72 85 91 108

91 108

110 130

126

150

138

163

165 195

183 217

165 195 183

217

274

325 328 390 411

488

547

650

825 975 305

14.1 20

76 87

102

102 122

152

203

460

DC Calibrations

1.4

2.1

2.9

4.3

6.4

8.5

1 1.3

34 40

31 53

84 229 305

2.3 2.8 X-67400

3.5 4.3 X-67404

4.7 5.7 X-67407

7.0 8.5 X-67415

10.5 12.8 X-67420

14.0 17.0 X-67425

18.6 22.7 X-67429

23.2 28.3 X-67433 33 40

47 57 56 68 X-67454

84 102 X-86996

123

137

5 ;:z

204 204

245

306 405 615

51 184

205 X-67479

51 67

262 X-88196

250

300

376 502 612 X-90710

'55

600V Max.

60 Hz Max.

5 Part No.

X-67439

X-67444

X-67457

102

184 X-88199

204

305 X-88195

X-67461

X-86999

141

X87001

153 X-87002

X-67480

229

E%;

305 X-90713 367

X-90712

458

X-90711

920 X-90709

TYPICAL SCHEMATIC DIAGRAM

(See Applicable Codes and Laws)

Bulletin 810 Coils

“Round Projections"

Check

Valve

Three Bulletin 810 relays used for overload protection.

Page 4

TO REPLACE THE COIL - Remove the

dashpot assembly, contact block, insulator, and coil terminations. On steel panel mounted relays also remove nameplate and its insulator, and the ter-

minal block. Remove set screw holding core guide assembly in side of frame and push core guide assembly down and

out. Remove coil washers and coil. Reassemble by reversing above procedure. Tighten all fasteners securely.

Parts indicated with 0 are recommended spare parts.

DASHPOT COMPONENTS ARE AVAILABLE ONLY

TERMINAL HOLD DOWN

ORDERING INFORMATION -Your order

cannot be entered unless the following information is given: Part number, description of part, catalog number and series letter of the relay. This instruction sheet applies also to the above relays when used on control apparatus listed

under other Bulletin numbers.

RENEWAL PARTS

IN SERIES B CONSTRUCTION.

CONTACT BLOCK Z-11011 (NO Hand Reset) Z-11012 (NC Hand Reset)

(NO

Z-11013 Z-11014 (NC Automatic Reset) Z-15227 (NC Automatic Reset

Z-33833 (NO Hand Reset Bifurcated Contacts) Z-33831 (NC Hand Reset Bifurcated Contacts) Z-33834 (NO Automatic Reset Bifurcated Contacts) Z-33832 (NC Automatic Reset Bifurcated Contacts)

NO NC

Automatic Reset)

with Blowout Magnet)

Normally Open

Normally Closed

;

INSULATOR

, F-17088

Contact

(See Above)

Block0

TERMINAL BLOCK

MOUNTING ASSEMBLY

X-2061 48

SLATE PANEL

MOUNTING BRACKETS

SLATE PANEL

MOUNTING SCREW ASSEMBLY

(Specify Screw Length)

Z-3126 PEDESTAL ASSEMBLY

(2 Included)

(2 Required)

OPERATING CO

X-206752

COIL WASHER (2 Required)

F-3826 (600 Volt Application)

F-3947 (2200 Volt Application)

DASHPOTANO

CORE ASSEMBLY

40188-800-02

OASHPOTAND

PISTON ASSEMBLY-

40188-800-01

SET SCREW

--w

#k!Q!$

* ’

‘t :

CORE GUIDE ASSEMBLY

G : 2, .)

\ J

: 2 (‘,

:...

.*-“,

I CORE ASSEMBLY

,$ I

: ,

’ i

X-l 8664

X-34274

COVER M981

Milwaukee, Wisconsin 53204

BLUE SILICONE

CLEAR SILICONE

(Single DASHPOT Supply)

FLUID

810-N9B

810-N9C

FLUID

DASHPOT RIB

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