Telemecanique RM3 JA1, RM3 JA2, RM3 UA1, RM3 UA2, RM3 TG2, RM3 TR1, RM3 TA2, RM3 TAR1, RM3 LG2, RM3 LA1, RM3 PA1, RM3 EA1 Specialty Relays Manual

RM3 Specialty Relays

®

File 8430

RM3 Specialty Relays

Table of Contents

Contents

RM3 Measurement and Control Relays ................................................................ 2-5

RM3JA2 Current Measurement Relays ................................................................. 6-9

RM3JA1 Current Measurement Relays ............................................................. 10-13

RM3UA2 Voltage Measurement Relays ............................................................ 14-17

RM3UA1 Voltage Measurement Relays ............................................................ 18-21

RM3TG2 3-Phase Supply Relays ...................................................................... 22-25

RM3TR1 3-Phase Supply Relays ...................................................................... 26-29

RM3TA2 3-Phase Supply Relays....................................................................... 30-33

RM3TAR1 3-Phase Supply Relays .................................................................... 34-37

RM3LG2 Liquid Level Control Relay .................................................................. 38-41

RM3LA1 Liquid Level Control Relay .................................................................. 42-45

RM3PA1 Insulation Control Relay ...................................................................... 46-49

RM3EA1 Sensitive Contact Protection Relay .................................................... 50-53

1

RM3 Specialty Relays

Selection guide

Applications

Current measurement

Overcurrent

Voltage measurement

Undercurrent and overcurrent

Overvoltage Undervoltage or overvoltage

3-phase supply control

Measurement or control

Supply voltage

Number of output relay contacts

Output relay state

Display

Built-in time delay

Width

2

Catalog Number

Pages

Adjustable threshold Adjustable thresholds Adjustable thresholds

0.003 to 1 A 0.003 to 1 A or 0.3 to 15 A

0.05 to 5 V or 1 to 100 V depending on relay or 30 to 500 V depending on relay

Detects: proper phase rotation and phase loss

24 Vac

42 to 48 Vac

110 to 130 Vac

220 to 240 Vac

1 Form C

24 to 240 Vac or dc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 Vac

42 to 48 Vac

110 to 130 Vac

220 to 240 Vac

2 Form C 1 Form C

24 to 240 Vac or dc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

220 to 500 Vac

2 Form C 2 Form C

Energized when threshold is exceeded De-energized on detection of a fault

Green LED : Supply voltage is present to the relay

Yellow LED : Relay has been energized.

Yellow LED : Relay has been energized

Fixed 80 ms

.89 inches

22.5 mm

RM3JA2

6 to 9

Adjustable

0.05 to 30 s

1.77 inches

45 mm

RM3JA1

10 to 13

Fixed 80 ms

.89 inches

22.5 mm

RM3UA2

14 to 17

Adjustable

0.05 to 30 s

1.77 inches

45 mm

RM3UA1

18 to 21

None

.89 inches

22.5 mm

RM3TG2

22 to 25

Liquid level control

RM3 Specialty Relays

Selection guide

Insulation control

Protection of sensitive contacts

Control : rotational direction and total failure of

Control : asymmetry of phases, failure one or more phases, of one or more undervoltage, phases rotational overvoltage, 220 direction of phases.

400, 500, 380 to 420 220 to 240 V

430 to 500V 380 to 415 V

Control : asymmetry of phases, phase failure, rotational direction of phases,

220 to 240 V

380/415V to 500V

110 to 130 Vac

160 to 300 Vac

220 to 240 Vac

300 to 500 Vac

380 to 415 Vac

220 to 240 Vac

380 to 415 Vac

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

2 Form C 1 Form C 2 Form C

Measurement of liquid resistance by submersible probes

24 Vac

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

1 Form C

24 to 240 Vac or dc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

2 Form C

Adjustable threshold

1 to 110 k

Ω

Control of contact closing

24 to 240 Vac or dc

110 to 130 Vac

220 to 240 Vac

24 Vac

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

1 Form C 2 Form C

De-energized on detection of a fault

Green LED :

Supply voltage is present.

Yellow LED :

Relay has been energized.

3 red LEDs : faults have occurred.

Adjustable

0.1 to 10 s

1.77 inches

45 mm

RM3TR1

26 to 29

Yellow LED :

Relay has been energized.

Fixed 500 ms

.89 inches

22.5 mm

RM3TA2

30 to 33

Green LED :

Supply voltage is present.

Yellow LED :

Relay has been energized.

2 red LEDs : faults have occurred.

Adjustable

0.1 to 10 s

1.77 inches

45 mm

RM3TAR1

34 to 37

Fixed

250 ms

.89 inches

22.5 mm

RM3LG2

38 to 41

Energized when high level electrode immersed.

De-energized when low level electrode not immersed.

Energized when high level electrode immersed.

De-energized when low level electrode not immersed.

Energized on detection of a fault.

Green LED :

Supply voltage is present.

Yellow LED :

Relay has been energized.

Green LED : Supply voltage is present.

Yellow LED : Relay has been energized.

Adjustable

0.1 to 10 s

1.77 inches

45 mm

RM3LA1

42 to 45

None

1.77 inches

45 mm

RM3PA1

46 to 49

None or adjustable

0.05 to 30 s

1.77 inches

45 mm

RM3EA1

50 to 53

3

RM3 Specialty Relays

General Application Data

Environment

Conforming to standards

Approvals

Ambient air temperature around the device

Storage

Operation

On-load factor

Supply voltage range

Insulation voltage

Vibration resistance

Shock resistance

Degree of protection

Settings

Operating status indication

Connection

Wire Combinations

Between input and output

Conforming to IEC 68-2-6

Conforming to VDE 0106

(part 100) and VBG 4 for the terminal block

Terminals

Enclosure

Direct

Green LED on

Yellow LED on

Red LED on

By captive recessed

+/- screws

Stranded wire

Mounting positions

Mounting method

Cover accessory

Housing, terminal covers and top cover material

Product Carton

Clip-on

Optional

Self-extinguishing plastic

Output relay characteristics

Mechanical durability

Minimum switching capacity

Galvanic separation between input and measurement circuits

In millions of operating cycles

Resistive circuit

˚F

(˚C)

˚F

(˚C) kV

AWG

(mm 2 )

IEC 801 part 1-4 level III

IEC 68 part 2-3/2-6

VDE 0435 part 303, 4.8.3/class II and 303, 4.2.1/class I min. 2.5 kV

VDE 57160 part 0160/5.84 paragraph 4.8.8

VDE 0110/overvoltage category III

UL listed file E39281 guide E164353

CSA, GV

-40 to 185

(-40 to 85)

-13 to 140

(-25 to 60)

100%

-15% to +10% of rated supply voltage

2.5

10 gn/F = 55 Hz/a =

±

0.95 mm 2h per level

10 gn

IP 20 protected against direct finger contact

IP 50

By absolute scales

Supply voltage is present to terminals A1 and A2

Output relay has been energized

Indicate that a fault has occurred

All products

≤

2 #14 (

≤

2 x 2.5) without cable end

≤

2 #14 (

≤

2 x 2) with cable end

Any

On 35mm DIN3 mounting track

To reduce the chance of unauthorized changing of settings

Class V0 or V1 (UL 94)

Recyclable

30

17 V and 10 mA

All products

4

RM3 Specialty Relays

RM3 Measurement and Control Relays

General Application Data

Output characteristics

Load on a.c. supply

Load on d.c. supply

Electrical durability of contacts, in millions of operating cycles

220 V 50 Hz AC-1, 360 operating cycles/hour

Millions of operating cycles

10

6

9

8

7

6

5

4

3

2

10

5

1 2 3 4 5 6 7 8

Amperes

Reduction factor K for inductive loads (to be applied to the values obtained above)

1.0

0.9

0.8

0.7

0.6

0.5

100

80

60

50

40

30

20

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Cos ϕ

Load limit curve (resistive load)

V

300

200

10

0.1

0.3

0.5

0.8

2 3 4 6 8 10

0.2

0.4

0.6

1 Amperes

Note: When used with a d.c. contactor or relay, it is recommend that a freewheel diode be connected in parallel to the coil.

+

RM3

K

–

5

RM3 Specialty Relays

RM3JA2 Current Measurement Relays

Operating Principles

RM3JA2

This device is used anywhere it is important to detect when a preset a.c. or d.c. current threshold is exceeded. This relay can be used to monitor currents between 3mA and 1A. Some examples of applications for this relay are:

- To detect whether a conveyor is loaded or not.

- To detect a load on a pump.

- To detect a fan belt breaking.

- To monitor loading of single phase motors.

- To monitor heating and lighting circuits.

Operating principles

• Apply the appropriate supply voltage (U supply) to terminals A1 and A2. This supplies power to the electronics inside this device.

• The current to be monitored is connected to terminal B1 or B2 or B3 (depending on current to be monitored) and terminal C.

• The output relay terminal (15-common, 16-normally close contact, 18-normally open contact) is used to signal that the current is or is not above the preset current threshold setting.

• The current threshold setting (IS1)(refer to the diagrams below) is set to the current above which it is desired to have the output relays change state.

• The hysteresis needs to be set. Hysteresis is the difference between the current threshold setting and the dropout current setting (IS2) of the output relay. It is expressed as a percentage: h= (IS1 - IS2)/IS1

RM3 JA2

R

U

A1 A2

16

15 18

1

2

1 Hysteresis setting, 5 to 30%

2 Current threshold setting (IS1)

If the current to be monitored is connected to:

• B1 and C = Use the white scale times 0.001

(3 to 30mA)

• B2 and C = Use the yellow scale times 0.001

(10 to 100mA)

• B3 and C = Use the yellow scale times 0.01

(0.1 to 1A)

R The yellow LED labeled with an R indicates that the output contacts have been energized when it is illuminated.

U The green LED labeled with a U (Voltage) indicates that supply voltage is present to the RM3 relay when illuminated.

Functional diagram

U supply A1-A2

IS1

IS2

Current measured

Relay 15-18

15-16 t : measurement cycle t

≤

80 ms < t

B1, B2, B3

RM3-JA2

U drop < 1 V

1 measurement

C

Load

• If the supply voltage (U supply) is not applied to terminals A1 and A2, the output relays will be in its deenergized state

(contact 15-16 will be closed and contact 15-18 will be open).

• When supply voltage is applied to terminal A1 and A2, the output relay will not change state until the current has exceeded the current threshold setting (IS1) and the current remains above the current threshold setting (IS1) level for more than the measuring cycle of

≤

80 milliseconds.

• After the output relay has changed state, it will remain energized unless the current falls below the dropout current setting (current threshold setting minus the hysteresis) or supply voltage is lost from terminals A1 or A2 or the measured current exceeds the upper limits of the RM3 relay, which results in damage to the RM3 relay.

• The measure range of this relay can be extended by:

- Using a current transformer and connecting the secondary to the terminals on the RM3 relay.

- Connecting a resistor in parallel with the measuring input (see the next page for an example).

6

RM3 Specialty Relays

RM3JA2 Current Measurement Relays

Wiring, Approximate Dimensions, and Setup Information

Wiring

C

A1 15 B3

B1 B2

C

18 16 A2

Approximate dimensions

A1-A2

B1, B2,

B3, C

15-18

15-16

Supply voltage

Currents to be measured

(see table to the right)

Form C contact of output relay

Connection and current values to be measured

RM3JA211

B1-C

B2-C

3 to 30 mA

10 to 100 mA

B3-C 0.1 to 1 A

Dimensions

Inches

MM

3.94 / 100

Setup information

• Setup example is based on the following information :

.885/22.5

- Overcurrent threshold to be measured is 0.8A.

- Dropout current threshold is 0.6 A.

- The supply voltage is 120 Vac

RM3 JA2

A1 A2

16

15 18

R

U

1

2

• Using page 8, an RM3JA211FG7 relay would be selected because of the

120 Vac supply voltage and it has a measurement range of 3mA to 1A.

• Wire the RM3JA211FG7 relay as explained under operating principles on the previous page.

• Set the current threshold potentiometer (2) to 80 on the yellow scale. Current is being measured on terminals B3 and C, which means you use the yellow scale times 0.01 (80x0.01=0.8A).

• Set the hysteresis potentiometer to 25 h = (IS1-IS2)/IS1

(0.8-0.6)/0.8=0.25 or 25%

• Example of extending the measuring range

RM3-JA

Im

B1

I

Ri

C

Rs

d.c. or a.c. supply:

Simply connect a resistor “Rs” to terminals B1-C (or B2, \B3-C) on the measuring input.

The relay energization threshold will be towards the middle of the setting

Ri potentiometer range if the value of Rs is in the region of : Rs =

(2I/Im) - 1 where: Ri Internal resistance of input B1-C

Im Maximum value of the threshold setting range

I Current threshold to be measured

Power dissipated by Rs : P = Rs (I -Im/2)

2

Application : use of relay RM3JA211••• (10 to 100 mA). Connection B2-C to measure a threshold of 1 A, knowing that Ri = 10

Ω

for this rating and that Im = 100 mA

10

(2 x 1/0.1) - 1

Ω

P = (1 -

0.1

2

) 2 x 0.526 = 0.47 W

Select a resistor Rs capable of dissipating at least twice the calculated value, i.e. 1 W for this example, in order to limit the temperature rise.

7

RM3 Specialty Relays

RM3JA2 Current Measurement Relays

Ordering Information

Current to be measured depending on connection ac or dc

3 to 30 mA

10 to 100 mA

0.1 to 1 A

Control Circuit

Voltage

50/60 Hz

24

42-48

110-130

220-240

Catalog

Number

RM3JA211B7

RM3JA211DE7

RM3JA211FG7

RM3JA211MU7

Approximate

Weight

lb. / (kg)

0.39/(0.175)

0.39/(0.175)

0.39/(0.175)

0.39/(0.175)

RM3JA2

Accessories (to be ordered separately)

Description Catalog

Number

Sealing cover

Replacement Marking Tab

LA9RE02

LA9D92

Approximate

Weight lb. / (kg)

0.01/(0.003)

0.01/(0.001)

LA9RE02

8

RM3 Specialty Relays

RM3JA2 Current Measurement Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50/60 Hz

Vac

V

VA

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

IEC

UL

IEC

UL

AC-15, 220 V

NEMA

V

V

A

A

A

Time delay

Switching threshold drift

Depending on permissible ambient temperature

Within the supply voltage range

(85% to 110% of Un)

Adjustable

Hysteresis

Measuring cycle

Operating status indication

Green LED on

Yellow LED on

ms

Measuring input characteristics

Internal input resistance and permissible overload depending on the current measurement ranges

Measurement range

Vac 50-60 Hz and Vdc

3 to 30 mA

10 to 100 mA

0.1 to 1 A

24

2.1

42 to 48

2.9

1

Energized when current threshold exceeded

250

300

4

5

1.5

B300

None

≤

0.06 % per degree centigrade

≤

0.5 %

5 to 30 % of the current threshold setting

≤

80

Supply Voltage (Un) is present to the relay.

Relay energized (current threshold exceeded)

Internal input resistance Ri

33

Ω

10

Ω

1

Ω

110 to 130

2.4

220 to 240

3.2

Permissible continuous overload

50 mA

150 mA

1.5 A

Permissible overload for t

≤

3 s

(Not repetitive)

200 mA

0.5 A

5 A

9

RM3 Specialty Relays

RM3JA1 Current Measurement Relays

Operating Principles

RM3JA1

This device is designed to detect when a preset current threshold is exceeded, on a.c. or d.c. supply. The RM3JA1••MW relay can monitor overcurrent or undercurrent. All the other relays can only monitor overcurrent. These relays can be used to monitor currents between 3 mA to 15 A.

Some examples of applications for these relays are:

- To detect whether a conveyor is loaded or not

- To detect a load on a pump

- To detect a fan belt breaking

- To monitor the loading of a single phase motor

- To monitor heating and lighting loads

Operating principles

•

Apply the appropriate supply voltage (U Supply) to terminals A1 and A2. This supplies power to the electronics inside the device.

•

The current to be monitored is connected to terminal B1 or B2 or B3, depending on current to be monitored, and terminal C.

•

The output relay terminals (15 and 25 -Common, 16 and 26 -Normally closed contact, and 18 and 28- Normally open contact) are used to signal that the current is or is not above the preset current threshold setting.

•

The current threshold setting (IS1) (refer to the diagram below) is set to the current above which it is desired to have the output relays change state.

•

The hysteresis needs to be set. Hysteresis is the difference between the current threshold setting and the dropout current setting (IS2) of the output relays. It is expressed as a percentage: h = (IS1-IS2)/IS1. Hysteresis is adjustable between 5 and 30%.

1s

R

U

A1 A2

16

15 18

26

25 28

RM3 JA1

Uc

1

3

4

2

5

1 Time delay range selector switch (0.05 to 1 sec. and 1.5 to

30 sec.).

2 Time delay setting.

3 Hysteresis setting 5 to 30%.

4 Current threshold setting (IS1).

If the current to be monitored is connected to:

• B1 and C = Use the yellow scale times 0.1

• B2 and C = Use the white scale times 1.0

• B3 and C = Use the yellow scale times 1.0

5 Undercurrent (UC) or Overcurrent (OC) selector switch.

This is only available on the RM3JA1

••

MW relay.

R The yellow LED labeled with an R indicates that the output contacts have been energized when it is illuminated.

U The green LED labeled with a U (voltage) indicates that supply voltage is present to the RM3 relay when illuminated.

Functional diagram

• If the supply voltage (U supply) is not applied to terminals A1 and A2, the output relays will be in the de-energized state (Contacts 15-16 and 25-26 will be closed and contacts 15-18 and 25-28 will be open).

• If the RM3JA1••MW set to OC or any of the other RM3JA1 relays monitors a current greater than the threshold setting

(IS1), the output relay will energize with or without time delay, depending on the relay chosen. When the current returns to a value IS2 below the threshold, depending on the hysteresis setting, the relay is instantaneously deenergized.

• If the RM3JA1••MW relay set to UC monitors a current less than the threshold setting IS1, the output relay will energize with or without time delay, depending on the relay chosen. When the current returns to a value IS2 above the threshold, depending on the hysteresis setting, the relay is instantaneously de-energized.

• A measuring cycle lasts only 80 ms, which allows rapid detection of changes in current.

Function "OI" Function "UI"

U supply A1-A2

Relay

IS1

IS2

Current Measured

15-18

15-16

U Supply A1-A2

IS2

Current measured

IS1

Relay

15-18

15-16

25-28

25-26

25-28

25-26 t

< t t

< t t: time delay

B1, B2, B3 C

RM3-JA

Load

U drop < 1 V

Note : The measurement ranges can be extended by means of a current transformer, the secondary of which is connected to the terminals of the corresponding RM3, or by means of a resistor connected in parallel with the current being measured (see the next page for an example).

10

RM3 Specialty Relays

RM3JA1 Current Measurement Relays

Wiring, Approximate Dimensions, and Setup Information

Wiring

C

A1 15 25 B1 B2 B3

16 18 28 26 C A2

Approximate dimensions

A1-A2

B1, B2,

B3, C

15-18

15-16

25-28

25-26

Supply voltage

Currents to be measured

(see table to the right)

1 st Form C contact of output relay

2 nd

Form C contact of output relay

Connection and current values to be measured according to the type of RM3JA1

RM3JA1•1

B1-C 3 to 30 mA

RM3JA1•2

B2-C

B3-C

B1-C

B2-C

B3-C

10 to 100 mA

0.1 to 1 A

0.3 to 1.5 A

1 to 5 A

3 to 15 A

Dimensions

Inches

MM

3.94 / 100 1.77 / 45

Setup information

• Setup example of overcurrent based on the following information:

- Overcurrent threshold to be measured is 13 amperes

- Output relay time delay : 5 sec

- Reset current threshold : 11 A

- Supply voltage : 120 Vac 60 Hz

1s

A1 A2

16

15 18

26

25 28

RM3 JA1

R

U

Uc

1

3

4

2

5

• Using page 12, an RM3JA112MW could be selected because it will work on

120 Vac 60 Hz, it has a range from 0.3 to 15 Amperes, and it has an adjustable time delay.

• Wire the relay as explained under operating principles on the previous page.

• To setup the relay:

Place the function selector 5 on Oc.

- Place the timing range selector 1 on 30 s.

- Set the time delay potentiometer 2 to 5 s on the yellow scale.

- Set the current threshold setting potentiometer 4 to 13 on the yellow scale.

- Set the hysteresis 3 to 15.4 % on the yellow scale.

(13 - 11)/13 = 2/13 = .154 = 15.4 %.

• Extending the measuring range

Im

I RM3-JA

Ri

B1

C

Rs

d.c. or a.c. supply

Simply connect a resistor “Rs” to terminals B1-C (or B2, \B3-C) on the measuring input.

The relay energization threshold will be towards the middle of the setting

Ri potentiometer range if the value of RS is in the region of : Rs =

(2I/Im) - 1 where: Ri Internal resistance of input B1-C

I

Im

Maximum value of the threshold setting range

Current threshold to be measured

Power dissipated by Rs : P = Rs (I -Im/2) 2

- Application: use of relay RM3JA111FG7 (10 to 100 mA). Connection B2-C to measure a threshold of 1 A, knowing that Ri = 10 W for this rating and that Im = 100 mA

The value of Rs will be :

10

= 0.526

Ω

(2 x 1/0.1) - 1

0.1

P = (1 - )

2

2

x 0.526 = 0.47 W

Select a resistor “Rs” capable of dissipating at least twice the calculated value, i.e. 1 W for this example, in order to limit temperature rise.

11

RM3 Specialty Relays

RM3JA1 Current Measurement Relays

Ordering Information

RM3JA1

Time delay

Adjustable

0.05 to 30 s

None

Current to be measured depending on connection

Vac or Vdc

3 to 30 mA

10 to 100 mA

0.1 to 1 A

0.3 to 1.5 A

1 to 5 A

3 to 15 A

3 to 30 mA

10 to 100 mA

0.1 to 1 A

0.3 to 1.5 A

1 to 5 A

3 to 15 A

Control Circuit

Voltage

50/60 Hz

24 to 240 Vac or 24 to 240 Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or 24 to 240 Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or 24 to 240 Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or 24 to 240 Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

Accessories (to be ordered separately)

Description

Sealing cover

Replacement Marking Tab

Catalog

Number

RM3JA111MW

RM3JA111FG7

RM3JA111MU7

RM3JA111QN7

RM3JA112MW

RM3JA112FG7

RM3JA112MU7

RM3JA112QN7

RM3JA101MW

RM3JA101FG7

RM3JA101MU7

RM3JA101QN7

RM3JA102MW

RM3JA102FG7

RM3JA102MU7

RM3JA102QN7

Catalog

Number

LA9RM301

LA9D92

Weight lb./(kg)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

0.65/(0.295)

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

12

RM3 Specialty Relays

RM3JA1 Current Measurement Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50/60 Hz

Vdc

Vac

Vdc

Output relay and operating characteristics

Number of C/O (Form C) contacts

V

V

VA

W

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Switching threshold drift

Time delay drift

Hysteresis

Measuring cycle

Operating status indication

IEC

UL

IEC

UL

AC-15

NEMA

Adjustable on

RM3JA11

Depending on permissible ambient temperature

Within the supply voltage range

(85% to 110% Un)

Within the supply voltage range

(85% to 110% Un)

Depending on temperature

Adjustable

V

V

A

A s ms

Green LED on

Yellow LED on

Measuring input characteristics

Internal input resistance and permissible overload depending on the current measurement ranges

Measurement range

Vac 50-60 Hz and Vdc

3 to 30 mA

10 to 100 mA

0.1 to 1 A

0.3 to 1.5 A

1 to 5 A

3 to 15 A

24 to 240

24 to 240

2.2 to 6

2

Internal input resistance Ri

33

Ω

10

Ω

1

Ω

0.06

Ω

0.02

Ω

0.006

Ω

110 to 130

–

4.8

–

2

Energized when current threshold exceeded

400

300

5

5

230 V-3 A, 400 V-2 A

B300

0.05 to 30

≤

0.06 % per degree centigrade

≤

0.5 %

≤

0.5 %

≤

0.06 % per degree centigrade

5 to 30 % of the current threshold setting

≤

80

Supply Voltage (Un) is present to the relay.

Relay energized (current threshold exceeded)

220 to 240

–

3.5

–

380 to 415

–

4

–

Permissible continuous overload

50 mA

150 mA

1.5 A

2 A

7 A

20 A

Permissible overload for t

≤

3 s

200 mA

0.5 A

5 A

10 A

15 A

100 A

13

RM3 Specialty Relays

RM3UA2 Voltage Measurement Relays

Operating Principles

RM3UA2

This device is designed to detect when a preset voltage threshold is exceeded, on a.c. or d.c.

Monitoring is on overvoltage, within a measurement range of 50 mV to 500 V.

Some examples of applications for these relays are:

- d.c. motor overspeed control,

- battery monitoring,

- monitoring of a.c. or d.c. supplies.

Operating principles

• Apply the appropriate supply voltage (U Supply) to terminals A1 and A2. This supplies power to the electronics inside this device.

• The voltage to be monitored is connected to terminals B1 or B2 or B3 (Depending on the voltage to be monitored.)

and C.

• The output relay terminals (15 - Common, 16 - Normally closed contact, 18 - Normally open contact) is used to signal that the voltage is or is not above the preset voltage threshold setting.

• The voltage threshold setting (US1) (refer to the diagram below) is set to the voltage above which it is desired to have the output relays change state.

• The hysteresis needs to be set. The hysteresis is the difference between the voltage threshold setting and the dropout voltage setting (US2) of the output relays. It is expressed as a percentage: h= (US1/US2)/US1. Hysteresis is adjustable between 5 and 30%.

RM3 UA2

A1 A2

16

15 18

R

U

1

2

1 Hysteresis setting 5 to 30%.

2 Voltage threshold setting (US1).

R The yellow LED labeled with an R indicates that the output contact has been energized when it is illuminated.

U The green LED labeled with a U (Voltage) Indicates that supply voltage is present to the RM3 relay when illuminated.

Functional diagram

•

If the supply voltage is not applied to terminals A1 and A2, the output relays will be in the deenergized state (Contacts

15-16 will be closed and contacts 15-18 will be open).

The voltage to be monitored is connected to terminals B1, B2 or B3 and C.

•

When supply voltage is applied to terminal A1 and A2, the output relay will not change state until the voltage has exceeded the voltage threshold setting (US1) and the voltage remains above the voltage threshold setting (US1) level for more than the measuring cycle of <80 milliseconds.

•

After the output relay has changed state, it will remain energized unless the voltage falls below the dropout voltage setting (voltage threshold setting minus the hysteresis) or the supply voltage is lost from terminals A1 and A2 or the measured voltage exceeds the upper limits of the RM3 relay, which results in damage to the RM3 relay.

Functional diagram

U supply A1-A2 t : measuring cycle

US1

US2

Voltage measured

Relay 15-18

15-16 t

≤

80 ms < t

The measurement ranges can be extended beyond 500 V by adding a resistor on model RM3UA213.

Voltage a or c

Simply connect an additional resistor (Rs) in series with measuring input B3.

RM3-UA213

B3

Ri

C

Rs

U > 500 V

If the value of Rs is in the region of :

2 U

Um

Ri : internal resistance seen from input B3/C

Um : maximum value of the threshold setting range

U : voltage threshold to be measured

The relay energization threshold will be towards the middle of the threshold setting potentiometer travel.

In general, the power consumed by the resistor does not exceed 0.5 W.

Note :The measurement range on Vac supply can be extended by means of a voltage transformer, the secondary of which is connected to the measuring terminals of the corresponding RM3.

14

Wiring

C

A1 15 B3

B1 B2

C

18 16 A2

Approximate dimensions

RM3 Specialty Relays

RM3UA2 Voltage Measurement Relays

Wiring, Approximate Dimensions, and Setup Information

A1-A2

B1, B2

B3, C

15-18

15-16

Supply voltage

Voltages to be measured

(see table to the right)

Form C contact of output relay

Connection and voltage values to be measured according to the type of RM3UA2

RM3UA211

B1-C

B2-C

50 to 500 mV

0.3 to 3 V

RM3UA212

RM3UA213

B3-C

B1-C

B2-C

B3-C

B2-C

B3-C

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

Dimensions

Inches

MM

3.94 / 100

Setup information

• Example of overvoltage to be measured:

- Overvoltage threshold to be measured 460 V

- Reset voltage threshold 410 V

- Supply voltage 120 V ac 50/60 Hz

.885/22.5

RM3 UA2

A1 A2

16

15 18

R

U

1

2

• Product selected is a RM3UA213FG7 from page 16.

- Voltage measurement range 30 to 500 V

- Connection of voltage to be measured B3-C (50 to

500 V)

• Measuring principle :

- Set the voltage threshold setting potentiometer 2 to

46

(46 x 10 = 460).

- Set the hysteresis 1 to 10.8 %

(460-410) / 460 = .108 = 10.8%

15

RM3 Specialty Relays

RM3UA2 Voltage Measurement Relays

Ordering Information

RM3UA2

Voltage to be measured depending on connection

Vac or Vdc

50 to 500 mV

0.3 to 3 V

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

Control Circuit

Voltage

50/60 Hz

24

42 to 48

110 to 130

220 to 240

24

42 to 48

110 to 130

220 to 240

24

42 to 48

110 to 130

220 to 240

Accessories (to be ordered separately)

Description

Sealing cover

Replacement Marking Tab

Catalog

LA9RE02

LA9D92

Catalog

Number

RM3UA211B7

RM3UA211DE7

RM3UA211FG7

RM3UA211MU7

RM3UA212B7

RM3UA212DE7

RM3UA212FG7

RM3UA212MU7

RM3UA213B7

RM3UA213DE7

RM3UA213FG7

RM3UA213MU7

Weight

lb./ (kg)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

Weight

lb. / (kg)

0.01/(0.003)

0.01/(0.001)

LA9RE02

16

RM3 Specialty Relays

RM3UA2 Voltage Measurement Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vac

V

VA

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

IEC

UL

IEC

UL

AC-15, 220 V

NEMA

V

V

A

A

A

Time delay

Switching threshold drift

Depending on permissible ambient temperature

Within the supply voltage range

(85% to 110% of Un)

Adjustable

Hysteresis

Measuring cycle

Operating status indication

Green LED on

Yellow LED on

ms

Measuring input characteristics

Internal input resistance and permissible overload depending on the voltage measurement ranges

Measurement range

Vac 50-60 Hz and Vdc

50 to 500 mV

0.3 to 3 V

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

24

2.1

Internal input resistance Ri

7.7 k

Ω

46.5 k

Ω

77.5 k

Ω

19 k

Ω

95 k

Ω

190 k

Ω

570 k

Ω

950 k

Ω

42 to 48

2.9

1

Energized when voltage threshold exceeded

250

300

4

5

1.5

B300

None

≤

0.06 % per degree centigrade

≤

0.5 %

5 to 30 % of the voltage threshold setting

≤

80

Supply Voltage (Un) is present to the relay.

Relay energized (voltage threshold exceeded)

110 to 130

2.4

220 to 240

3.2

Permissible continuous overload

20 V

60 V

80 V

90 V

150 V

300 V

400 V

550 V

Permissible overload for t

≤

1 s

25 V

80 V

100 V

100 V

200 V

400 V

500 V

550 V

17

RM3 Specialty Relays

RM3UA1 Voltage Measurement Relays

Operating Principles

RM3UA1

This device is designed to detect when a preset voltage threshold is exceeded, on a.c. or d.c. supply. Monitoring is on overvoltage or undervoltage, within a measurement range of 50 mV to 500 V.

Applications :

- d.c. motor overspeed control,

- battery monitoring,

- monitoring of a.c. or d.c. supplies.

Operating principles

• Apply the appropriate supply voltage (U Supply) to terminals A1 and A2. This supplies power to the electronics inside this device.

• The voltage to be monitored is connected to terminals B1 or B2 or B3 (Depending on the voltage to be monitored.) and C.

• The output relay terminals (15 & 25 - Commons, 16 & 26 - Normally closed contacts, 18 & 28 - Normally open contacts) are used to signal that the voltage is or is not above the preset voltage threshold setting.

• Relay set for overvoltage detection (OV) :

If the voltage is greater than the threshold setting US1, the output relay is energized with or without time delay. When the voltage returns to a value US2 below the threshold, depending on the hysteresis setting, the relay is instantaneously de-energized.

• Relay set for undervoltage detection (UV) :

If the voltage is less than the threshold setting US1, the output relay is energized with or without time delay. When the voltage returns to a value US2 above the threshold, depending on the hysteresis setting, the relay is deenergized.

• The hysteresis needs to be set . The hysteresis is the difference between the voltage threshold setting and the dropout voltage setting (US2) of the output relays. It is expressed as a percentage: h= (US1/US2)/US1. Hysteresis is adjustable between 5 and 30 %.

• A measuring cycle lasts only 80 ms, which allows rapid detection of changes in voltage.

1s

A1 A2

16

15 18

26

25 28

RM3 UA1

1

3

1 Time delay range selector switch (0.05 to 1 s or 1.5 to 30 s).

2 Time delay setting.

3 Hysteresis setting 5 to 30 % (1).

4 Voltage threshold setting.

5 Undervoltage (UV) or overvoltage (OV) setting selector.

4

R

U

UV

2

5

R The yellow LED labeled with an R indicates that the output contacts have been energized when it is illuminated.

U The green LED labeled with a U (Voltage) indicates that the supply voltage is present to the RM3 relay when illuminated.

(1) Value of the voltage differential between energization and de-energization of the output relay (% of the voltage threshold to be measured).

Functional diagram

Function "OV"

U supply A1-A2

Function "UV"

US1

US2

Voltage measured

15-18

15-16

Relay

25-28

25-26 t : time delay t < t

U supply A1-A2

US2

US1

Voltage measured

15-18

15-16

Relay

25-28

25-26 t < t

The measurement ranges can be extended beyond 500 V by adding a resistor on models RM3UA103 and RM3UA113.

Voltage a or c

RM3-UA

103 ou

UA 113

Ri

C

Rs

U > 500 V

Simply connect an additional resistor (Rs) in series with the measuring input B3 or C. If the value of Rs is in the region of :

Ri : internal resistance seen from input B3/C

B3

Um

Um : maximum value of threshold setting range

U : voltage threshold to be measured

The relay energization threshold will be towards the middle of the threshold setting potentiometer travel. In general, the power consumed by the resistor does not exceed 0.5 W

Note :The measurement range on Vac supply can be extended by means of a voltage transformer, the secondary of which is connected to the measuring terminals of the corresponding RM3.

18

Wiring

C

A1 15 25 B1 B2 B3

16 18 28 26 C A2

Approximate dimensions

RM3 Specialty Relays

RM3UA1 Voltage Measurement Relays

Wiring, Approximate Dimensions, and Setup Information

A1-A2

B1, B2,

B3, C

15-18

15-16

25-28

25-26

Supply voltage

Voltages to be measured

(see table to the right)

1 st C/O (Form C) contact of output relay

2 nd

C/O (Form C) contact of output relay

Connection and voltage values to be measured according to the type of RM3UA1

RM3UA1•1 B1-C

B2-C

50 to 500 mV

0.3 to 3 V

RM3UA1•2

RM3UA1•3

B3-C

B1-C

B2-C

B3-C

B2-C

B3-C

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

Dimensions

Inches

MM

3.94 / 100

Setup information

• Example of undervoltage to be measured :

- Undervoltage threshold to be measured 24 Vdc

- Output relay time delay 20 seconds

- Reset voltage threshold 27 Vdc

- Supply voltage120 Vac 60 Hz

1s

A1 A2

16

15 18

26

25 28

RM3 UA1

R

U

UV

1

3

4

2

5

1.77 / 45

• Using page 20, an RM3UA112FG7 would be selected because it will work on

120 Vac and has a range of 1 to 100 V and has an adjustable time delay of from 0.05 to 30 seconds.

• To set up the relay:

- Place the function selector 5 on UV.

- Place the timing range selector 1 on 30 s.

- Set the potentiometer 2 to 20.

- Set the voltage threshold setting potentiometer 4 to 24 (24 x 1 = 24).

Voltage to be measured would be connected to terminals B2 and C.

- Set the hysteresis 3 to 12.5 % (27 - 24) / 27 = .125 = 12.5%

19

RM3 Specialty Relays

RM3UA1 Voltage Measurement Relays

Ordering Information

RM3UA1

Time delay

Adjustable

0.05 to 30

None

Voltage to be measured depending on connection

50 to 500 mV

0.3 to 3 V

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

50 to 500 mV

0.3 to 3 V

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

Supply Voltage

(Vac 50/60 Hz.)

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

24 to 240 Vac or Vdc

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

Accessories (to be ordered separately)

Description

Sealing cover

Replacement Marking Tab

Catalog

Number

RM3UA111MW

RM3UA111FG7

RM3UA111MU7

RM3UA111QN7

RM3UA112MW

RM3UA112FG7

RM3UA112MU7

RM3UA112QN7

RM3UA113MW

RM3UA113FG7

RM3UA113MU7

RM3UA113QN7

RM3UA101MW

RM3UA101FG7

RM3UA101MU7

RM3UA101QN7

RM3UA102MW

RM3UA102FG7

RM3UA102MU7

RM3UA102QN7

RM3UA103MW

RM3UA103FG7

RM3UA103MU7

RM3UA103QN7

Catalog

Number

LA9RM301

LA9D92

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

Weight lb./(kg)

.66/(0.300)

.66/(0.300)

.66/(0.330)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

.66/(0.300)

Weight

lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

20

RM3 Specialty Relays

RM3UA1 Voltage Measurement Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vdc

Vac

Vdc

Output relay and operating characteristics

Number of C/O (Form C) contacts

V

V

VA

W

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay on energization

Switching threshold drift

Time delay drift

IEC

UL

IEC

UL

AC-15

NEMA

RM3UA11

RM3UA10

Depending on permissible ambient temperature

Within the supply voltage range

(85 to 110% Un)

Within the supply voltage range

Depending on nominal operating temperature

V

V

A

A sec.

Output relay state

Operating status indication

Green LED on

Yellow LED on

Adjustable

Hysteresis

Measuring cycle

Measuring input characteristics

Internal input resistance and permissible overload depending on the voltage measurement ranges

Measurement range

Vac 50-60 Hz and Vdc

50 to 500 mV

0.3 to 3 V

0.5 to 5 V

1 to 10 V

5 to 50 V

10 to 100 V

30 to 300 V

50 to 500 V

ms

24 to 240

24 to 240

2.2 to 6

2

< 0.5 %

Internal input resistance Ri

7.7

Ω

46.5

Ω

77.5

Ω

19

Ω

95

Ω

190

Ω

570

Ω

950

Ω

110 to 130

–

4.8

–

2

400

300

5

5

230 V-3 A, 400 V-2 A

B300

Adjustable from 0.05 to 30

None

< 0.06 % per degree centigrade

< 0.5 %

< 0.06 % per degree centigrade

Energized when voltage threshold exceeded

Supply Voltage (Un) is present to the relay.

Relay energized (voltage threshold exceeded)

5 to 30 % of the voltage threshold setting

< 80

Permissible continuous overload

20 V

60 V

80 V

90 V

150 V

300 V

400 V

550 V

220 to 240

–

3.5

–

380 to 415

–

4

–

Permissible overload for t < 1 sec.

25 V

80 V

100 V

100 V

200 V

400 V

500 V

550 V

21

RM3 Specialty Relays

RM3TG2 3-Phase Supply Relays

Operating Principles

RM3TG2

This device monitors the presence and rotational direction of the phases in a 3-phase supply under no-load condition.

Applications:

• Connection of moving equipment :

- site equipment (cranes, pumps, conveyors, etc.),

- agricultural equipment,

- refrigerated trucks.

• Protection of persons and equipment against the consequences of reverse running:

- lifting, handling, elevators, escalators, etc.

• Control of sensitive 3-phase supplies.

Operating principle

The voltage of the supply to be monitored, connected to terminals L1, L2, L3 of the relay, also provides its power supply.

In normal operation, the output relay is energized, the yellow LED is on. If a fault occurs - reversal in rotational direction of phases, failure of one or more phases - the relay is de-energized (or cannot energize at switch-on) and the yellow LED goes out.

This relay is specifically designed for control of supplies under no-load conditions.

In the case of a supply under load, a return voltage can be registered by the RM3 in spite of a phase failure, thereby preventing detection of the true fault (phase failure detection threshold U < 60 V).

For control of supplies under load, select an RM3TR or TAR1.

RM3 TG2

L1

L2

L3

16

15 18

26

25 28

R

R The yellow LED labeled with an R indicates that the output contacts have been energized when it is illuminated.

Functional diagram

L1, L2, L3 L1, L3, L2 L1, L2, L3 L2, L3

L1

L1, L2, L3

Relay

15-18

15-16

25-28

25-26

22

RM3 Specialty Relays

RM3TG2 3-Phase Supply Relays

Wiring and Approximate Dimensions

Wiring

15 L3

L2 25

28 26

18 16

Approximate dimensions

L1, L2, L3

L1, L2, L3

15-18

15-16

25-28

25-26

Supply voltage

3-phase voltages to be controlled

(see table to the right)

1 st

C/O (Form C) contact of output relay

2 nd C/O (Form C) contact of output relay

Connection and voltage values to be controlled

RM3TG2

L1-L2-L3 220 to 500 V (50-60 Hz)

Dimensions

Inches

MM

3.94 / 100 .885/22.5

For a voltage equal to or greater than 415 V, a minimum distance of 10 mm must be left between relays if several are mounted side by side.

23

RM3 Specialty Relays

RM3TG2 3 Phase Supply Relays

Ordering Information

Time delay

Seconds

None

RM3TG2

Control and supply voltage

Vac 50-60 Hz

Volts

220 to 500

Catalog

Number

Weight

RM3TG201MS7 lb./(kg)

0.36/(0.165)

Accessories (to be ordered separately)

Description

Sealing cover

Replacement Marking Tab

Catalog

Number

LA9RE02

LA9D92

Weight lb./(kg)

0.01/(0.003)

0.01/(0.001)

LA9RE02

24

RM3 Specialty Relays

RM3TG2 3-Phase Supply Relay

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Phases L1, L2 Vac

Output relay and operating characteristics

Number of C/O (Form C) contacts

V

VA

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Operating status indication

IEC

UL

IEC

UL

AC-15, 220 V

NEMA

Yellow LED on

A

A

V

V

A

220 to 500

2.2 to 12.5

2

Energized during fault free operation

De-energized or unable to energize on detection of rotational direction fault or phase failure

250

300

4

5

1.5

B300

None

Relay energized

25

RM3 Specialty Relays

RM3TR1 3-Phase Supply Relays

Operating Principles

RM3TR110

RM3TR111, TR113, TR115

TR112, TR114

This multifunction device is designed to monitor the presence and rotational direction of the phases in a three-phase supply, as well as overvoltage (U > Un) or undervoltage (U < Un).

Applications

• Connection of moving equipment:

- site equipment (cranes, pumps, conveyors, etc.),

- agricultural equipment,

- refrigerated trucks.

• Protection of persons and equipment against the consequences of reverse running:

- lifting, handling, elevators, escalators, etc.

Operating principles

The control circuit supply voltage (Usupply) is applied to terminals A1-A2.

Monitoring of the 3-phase supply (Un) is performed on terminals L1, L2, L3.

In normal operation, the output relay is energized, the yellow LED is on.

The output relay is de-energized and the yellow LED goes out if any of the following faults are detected:

• Overvoltage or undervoltage

If the voltage goes outside the range of Un, the output relay is de-energized:

- overvoltage: the red LED > U illuminates,

- undervoltage: the red LED < U illuminates.

When the supply returns to its rated value, the relay is reenergized according to the hysteresis value (5 %) and the corresponding indicator goes out.

A selector switch allows selection of an adjustable 0.1 to 10 second time delay. With function ,this delay will allow the relay to ignore transient “over” and “under” voltages that might occur. With function , all transients above and below are taken into account and re-energization of the relay is delayed.

• Phase failure or incorrect rotational direction of phases

The output relay is de-energized without a time delay in the event of a phase failure or incorrect rotational direction of phases, the red LED “P” illuminates.

The output relay is energized and the fault indicator goes out as soon as the 3-phase supply (Un) returns to normal, (function ) or after a preset time delay, (function ).

R

U

A1 A2

16

15 18

26

25 28

RM3 TR1

U

U

P

3

1

2

4

1

Time delay function selector:

Fault detection delayed.

Fault detection extended.

2

Potentiometer for setting time delay, in seconds.

3

Potentiometer for setting overvoltage.

4

Potentiometer for setting undervoltage.

R

Yellow LED : indicates output relay has been energized when illuminated.

U

Green LED : indicates that supply voltage (Usupply) is present to the RM3 relay when illuminated.

>U Red LED : overvoltage fault exists.

<U Red LED : undervoltage fault exists.

P

Red LED : phase failure or incorrect rotational direction of phases exists.

Functional diagram

Function

U supply A1-A2

+ 10 %

+ 5 %

Un

- 5 %

- 10 %

Voltage measured

15-18

15-16

Relay

25-28

25-26 t t t

< t

RM3TR110

TR112, TR114

1 Depending on the setting of overvoltage potentiometer 3 above.

2 Depending on the setting of undervoltage potentiometer 4 above.

U supply A1-A2

+ 10 %

+ 5 %

Un

- 5 %

- 10 %

Voltage measured

15-18

15-16

Relay

25-28

25-26 t

Function t

RM3TR111, TR113, TR115

< t

26

RM3 Specialty Relays

RM3TR1 3-Phase Supply Relays

Wiring, Approximate Dimensions, and Setup Information

Wiring

A1 15 25 L1 L2 L3

16 18 28 26 A2

Approximate dimensions

A1-A2

L1, L2, L3

15-18

15-16

25-28

25-26

Supply voltage

Supply to be monitored

(see table to the right)

1 st

C/O (Form C) contact of output relay

2 nd C/O (Form C) contact of output relay

Connection and voltage values to be monitored according to the type of RM3TR1

RM3TR110

L1-L2-L3 220 V-50/60 Hz

RM3TR111

RM3TR112

RM3TR113

RM3TR114

RM3TR115

L1-L2-L3

L1-L2-L3

L1-L2-L3

L1-L2-L3

L1-L2-L3

220 V - 50 Hz

380 to 420 V-50/60 Hz

400 V - 50 Hz

430 to 500 V-50/60 Hz

500 V - 50 Hz

Dimensions

Inches

MM

3.94 / 100 1.77 / 45

Setup information

If the supply voltage (Un) is coming from the 3-phase voltage to be monitored, connect A1 to L1, and A2 to L3. When this is done, some faults cannot be displayed: failure of phase L1 or L3 for example.

Example of undervoltage and overvoltage to be monitored :

- Nominal 3-phase voltage to be monitored 480 Vac 60 Hz

- Overvoltage threshold to be monitored : 500 Vac

- Undervoltage threshold to be monitored : 400 Vac

- Control circuit voltage : 480 Vac

• Using page 28, an RM3TR114VS7 relay would be selected.

• Wire the RM3TR114VS7 relay as explained under operating principles on the previous page.

• Connect the 3-phase voltage to be monitored to terminals L1, L2, L3.

• Adjust the overvoltage to be monitored to 500 V by means of potentiometer 3.

• Adjust the undervoltage to be monitored to 400 V by means of potentiometer 4.

R

U

A1 A2

16

15 18

26

25 28

RM3 TR1

U

U

P

3

1

2

4

27

RM3 Specialty Relays

RM3TR1 3-Phase Supply Relays

Ordering Information

RM3TR1

Adjustable voltage threshold relays

Adjustable time delay

Seconds

0.1 to 10

Control voltage

Vac 50-60 Hz

V

160 to 300

Voltage threshold Nominal voltage to be monitored to be monitored

V

220-50/60 Hz

300 to 500

300 to 500

%

min 160 to 220 max 220 to 300 min 300 to 380 max 420 to 500 min 350 to 430 max 500 to 580

380 to 420 50/60 Hz

430 to 500 50/60 Hz

Fixed voltage threshold relays

Adjustable time delay

Seconds

0.1 to 10

Control voltage

Vac 50-60 Hz

V

110 to 130

220 to 240

380 to 415

Voltage threshold Nominal voltage to be monitored to be monitored

%

±

10

±

10

±

10

V

220 - 50 Hz

220 - 50 Hz

220 - 50 Hz

Catalog

Number

RM3TR110GV7

RM3TR112VS7

RM3TR114VS7

Catalog

Number

RM3TR111FG7

RM3TR111MU7

RM3TR111QN7

110 to 130

220 to 240

380 to 415

±

10

±

10

±

10

400 - 50 Hz

400 - 50 Hz

400 - 50 Hz

110 to 130

220 to 240

380 to 415

±

10

±

10

±

10

500 - 50 Hz

500 - 50 Hz

500 - 50 Hz

Accessories (to be ordered separately)

Description

Sealable cover (45mm Width)

Replacement Marking Tab

RM3TR113FG7

RM3TR113MU7

RM3TR113QN7

RM3TR115FG7

RM3TR115MU7

RM3TR115QN7

Catalog

Number

LA9RM301

LA9D92

Weight

lb./(kg)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

Weight

lb./(kg)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

0.71/(0.320)

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

28

RM3 Specialty Relays

RM3TR1 3-Phase Supply Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vac

V

VA

Output relay and operating characteristics

Number of C/O (Form C) contacts

110 to 130

2.7

2

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Switching threshold drift

Time delay drift

Hysteresis

Measuring cycle

Operating status display

IEC

UL

IEC

UL

AC-15

NEMA

On overvoltage or undervoltage fault only

Depending on permissible ambient temperature

Within the supply voltage range

(85 to 110 % of Un)

V

V

A

A sec.

Within the supply voltage range

(85 to 110% of Un)

Depending on the rated operational temperature

Fixed

Fixed

U Green LED on

R Yellow LED on

> U Red LED on

< U Red LED on

P Red LED on

ms

Control input characteristics

Nominal voltages to be monitored

Vac 50 Hz

Vac 50-60 Hz

V

V

< 0.5 %

< 0.5 %

220 to 240

2.8

< 0.06 % per degree centigrade

< 0.06 % per degree centigrade

About 5 % of the de-energization threshold

< 80

Supply Voltage (Un) is present to the relay.

Output relay is energized.

An overvoltage situation exists.

An undervoltage situation exists.

Incorrect rotational direction of phases or phase failure exists.

220, 400, 500

220, 380 to 420, 430 to 500

160 to 300

3

380 to 415

3

De-energized on detection of overvoltage, undervoltage or on phase failure or rotational direction of phases fault

400

300

5

5

230 V- 3A, 400 V-2 A

B300

1 to 10

300 to 50

3

29

RM3 Specialty Relays

RM3TA2 3-Phase Supply Relay

Operating Principles

RM3TA2

This device detects:

• A phase imbalance (asymmetry fault) within an adjustable threshold from 5 to 15 % (reduction or increase in voltage of one phase in relation to the other two).

• Failure of one or more phases.

• A phase reversal (Rotational direction of phases fault).

Applications:

• Connection of moving equipment:

- site equipment (cranes, pumps, conveyors, etc.),

- agricultural equipment,

- refrigerated trucks.

• Protection of motors against single-phase operation.

• Control of sensitive 3-phase supplies.

Operating principle

The supply voltage to be monitored is connected to terminals L1, L2, L3 of the relay, it also provides the power for the relay to operate.

In normal operation, the output relay is energized and the yellow LED is on.

When a phase imbalance (asymmetry fault), phase failure or phase reversal (rotational direction fault) is detected, the output relay de-energizes after a fixed time delay of 0.5 seconds (or cannot energize at start up), and the yellow LED goes out.

A fixed hysteresis (1) of 20 % is built-into the relay.

RM3 TA2

L1

L2

L3

16

15 18

1 Phase imbalance (Asymmetry) threshold setting potentiometer, from 5 to 15 %.

R Yellow LED is illuminated when no fault condition exists and the output relay is energized.

1

R

Functional diagram

Asymmetry

Un

Asymmetry

L1, L2, L3

Relay

15-18

15-16 t: time delay

L1, L2, L3 L1, L3, L2 L1, L2

L3

L1, L2

L3

L1

L2

L3

∆

L1/L3 > U asymmetry t = 0.5 s

(1) Hysteresis is the voltage differential (dissymmetry) between energization and de-energization of the output relay (% in relation to the preset asymmetry value).

Example: Phase imbalance is set at 10 %, 480 Vac supply

- relay de-energization threshold: 480 - 10 % = 432 V,

- relay re-energization threshold: 432 V + (20 % x 10 %) of 432 V = 440.6 V.

30

RM3 Specialty Relays

RM3TA2 3-Phase Supply Relay

Wiring and Approximate Dimensions

Wiring

15 L3

L1 L2

18 16

Approximate dimensions

L1, L2, L3

Supply voltage and voltages to be monitored (see table to the right)

15-18

15-16

1 st

C/O (Form C) output relay

Connection and voltage values to be controlled according to the type of RM3TA2

RM3TA210

RM3TA211

RM3TA212

RM3TA213

L1-L2-L3

L1-L2-L3

L1-L2-L3

L1-L2-L3

220 to 240 V - 60 Hz

220 to 240 V - 50 Hz

380 to 415 V - 60 Hz

380 to 415 V - 50 Hz

Dimensions

Inches

MM

3.94 / 100

.885/22.5

31

RM3 Specialty Relays

RM3TA2 3-Phase Supply Relays

Ordering Information

Time delay on de-energization

Seconds

Fixed 0.5

Supply voltage and voltages to be monitored

V

220 to 240 - 60 Hz

220 to 240 - 50 Hz

380 to 415 - 60 Hz

380 to 415 - 50 Hz

Catalog

Number

RM3TA210M6

RM3TA211M5

RM3TA212V6

RM3TA213V5

Weight

lb./(kg)

0.42/(0.190)

0.42/(0.190)

0.42/(0.190)

0.42/(0.190)

RM3TA2

Accessories (to be ordered separately)

Description

Sealing cover (22.5 mm width)

Replacement marking tab

Catalog

Number

LA9RE02

LA9D92

Weight lb./(kg)

0.01/(0.003)

0.01/(0.001)

LA9RE02

32

RM3 Specialty Relays

RM3TA2 3-Phase Supply Relay

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Rated supply and monitoring voltage tolerance

Vac 50/60 Hz

Phases L2, L3 Vac

V

VA

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay on de-energization

Switching threshold drift

Hysteresis

Phase imbalance

Operating status indication

IEC

UL

IEC

UL

AC-15, 220 V

NEMA

Fixed

Depending on permissible ambient temperature

Within the supply voltage range

(85 to 110% of Un)

Fixed

Adjustable

Yellow LED on

V

V

A

A

A

Sec.

220 to 240

1.3

+ or - 15 %

380 to 415

1.4

+ or - 15%

1

De-energized on detection of phase imbalance, phase failure or phase reversal.

250

300

4

5

1.5

B300

0.5

< 0.06 % per degree centigrade

< 0.5%

Approximately 20% in relation to phase imbalance threshold.

5 to 15%

Relay is energized

33

RM3 Specialty Relays

RM3TAR1 3-Phase Supply Relay

Operating Principles

RM3TAR1

This device detects:

• A phase imbalance (asymmetry fault) within an adjustable threshold from 5 to 15 % (Reduction or increase in voltage of one phase in relation to the other two.).

• Failure of one or more phases.

• A Phase reversal (Rotational direction of phases fault).

Applications:

• Connection of moving equipment:

- site equipment (cranes, pumps, conveyors, etc.),

- agricultural equipment,

- refrigerated trucks.

• Protection of persons and equipment against the consequences of reverse running: lifting, handling, elevators, escalators, etc.

• Control of sensitive 3-phase supplies.

Operating principle

The supply voltage is connected to terminals A1 and A2.

The 3-phase voltage to be monitored is connected to L1, L2, and L3 of the relay.

In normal operation, the output relay is energized, the yellow and green LEDs are on.

If a phase reversal (rotational direction) or phase failure fault is detected, the relay is de-energized (or cannot energize at start up), the yellow LED goes out, the red LED (P) illuminates.

If a phase imbalance (asymmetry fault) is detected, the output relay de-energizes after a preset time delay between 0.1

and 10 seconds, the yellow LED goes out and the red LED (A) illuminates.

A fixed hysteresis (1) of 20 % is built into the relay.

A1 A2

16

15 18

26

25 28

R

U

RM3 TAR1

A

P

1

2

1

Phase imbalance (Asymmetry) threshold setting potentiometer, from 5 to 15 %.

2

Time delay setting potentiometer, from 0.1 to 10 s.

R

The yellow LED labeled with an R indicates that the output contacts have been energized when it is illuminated.

U

The green LED labeled with a U (Supply voltage) indicates that supply voltage is present to the RM3 relay when illuminated.

A

Red LED: A phase imbalance (dissymmetry) exists.

P

Red LED: A phase failure (2 or 3) exists.

P and A

Red LEDs: A phase reversal (Incorrect rotational direction of phases) exists

Functional diagram

U supply A1-A2

Asymmetry

Un

Asymmetry

L1, L2, L3

L1, L2, L3 L1, L3, L2 L1, L2

L3

L1, L2

L3

L1

L2

L3

∆

L1/L3 > U asymmetry

Relay

15-18

15-16

25-28

25-26 t: time delay t

(1) Hysteresis is the voltage differential (dissymmetry) between energization and de-energization of the output relay.

(% in relation to the preset phase imbalance (asymmetry) value).

Example: asymmetry set at 10 %, 480 Vac supply

- relay de-energization threshold: 480 - 10 % = 432 V,

- relay re-energization threshold: 432 V + (20 % x 10 %) of 432 V = 440.6 V.

34

RM3 Specialty Relays

RM3TAR1 3-Phase Supply Relay

Wiring and Approximate Dimensions

Wiring

A1 15 25 L1 L2 L3

16 18 28 26 A2

Approximate dimensions

A1-A2

25-28

25-26

Supply voltage

L1, L2, L3

3-phase voltages to be monitored

(See table to the right.)

15-18

15-16

1 st

C/O (Form C) contact of output relay

2 nd C/O (Form C) contact of output relay

Connection and voltage values to be controlled according to the type of RM3TAR1

RM3TAR110

L1-L2-L3 220 to 240 V - 60 Hz

RM3TAR111

RM3TAR112

RM3TAR113

RM3TAR114

RM3TAR115

L1-L2-L3

L1-L2-L3

L1-L2-L3

L1-L2-L3

L1-L2-L3

220 to 240 V - 50 Hz

380 to 415 V - 60 Hz

380 to 415 V - 50 Hz

480 to 500 V - 60 Hz

480 to 500 V - 50 Hz

Dimensions

Inches

MM

3.94 / 100 1.77 / 45

35

RM3 Specialty Relays

RM3TAR1 3-Phase Supply Relays

Ordering Information

RM3TAR1

Adjustable time delay

Sec.

0.1 to 10

Voltage to be monitored

V

220 to 240 - 60 Hz

380 to 415 - 60 Hz

480 to 500 - 60 Hz

220 to 240 - 50 Hz

380 to 415 - 50 Hz

480 to 500 - 50 Hz

Supply Voltage

(Vac 50/60 Hz.)

V

110 to 130

220 to 240

110 to 130

220 to 240

380 to 415

110 to 130

220 to 240

380 to 415

480 to 500

110 to 130

220 to 240

380 to 415

110 to 130

220 to 240

380 to 415

110 to 130

220 to 240

380 to 415

Accessories (to be ordered separately)

Description

Sealing cover (45mm width)

Replacement marking tab

Catalog

Number

RM3TAR110FG7

RM3TAR110MU7

RM3TAR112FG7

RM3TAR112MU7

RM3TAR112QN7

RM3TAR114FG7

RM3TAR114MU7

RM3TAR114QN7

RM3TAR114TS7

RM3TAR111FG7

RM3TAR111MU7

RM3TAR111QN7

RM3TAR113FG7

RM3TAR113MU7

RM3TAR113QN7

RM3TAR115FG7

RM3TAR115MU7

RM3TAR115QN7

Catalog

Number

LA9RM301

LA9D92

Weight

lb./(kg)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

0.69/(0.315)

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

36

RM3 Specialty Relays

RM3TAR1 3-Phase Supply Relay

Application Data

Control circuit characteristics

Rated supply voltage (Un) Vac 50-60 Hz

V

110 to 130 220 to 240 380 to 415

Except for

RM3TAR110

3

480 to 500

RM3TAR114

ONLY

3

Average consumption at Un

Vac

VA

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay on de-energization

Switching threshold drift

Time delay drift

Hysteresis

IEC

UL

IEC

UL

AC-15

NEMA

Adjustable

Depending on permissible ambient temperature

Within the supply voltage range

(85 to 110% of Un)

Within the supply voltage range

Depending on nominal operating temperature

Fixed

V

V

A

A

Sec.

Phase asymmetry control

Measuring cycle

Operating status indication

Adjustable

U Green LED on

R Yellow LED on

A Red LED on

P Red LED on

P and A LEDs on

Measuring input characteristics

Monitoring voltage tolerance ms

2.7

2.8

2

De-energizes on detection of a phase imbalance (asymmetry fault), a phase failure or a phase reversal (rotational direction of phases fault).

400

300

5

5

230 V-3 A, 400 V-2 A

B300

0.1 to 10

< 0.06% per degree centigrade

< 0.5%

< 0.5%

< 0.06% per degree centigrade

Approximately 20% in relation to phase imbalance

(asymmetry) threshold

5 to 15%

≤

100

Supply voltage (Usupply) is present to the relay.

Relay is energized

Phase imbalance (asymmetry) fault exists.

Phase failure (2 or 3) exists.

Phase reversal (Incorrect rotational direction of phases or phase failure.)

+ or - 15 %

37

RM3 Specialty Relays

RM3LG2 Liquid Level Control Relay

Operating Principles

RM3LG2

This device monitors the levels of conductive liquids. Do not use with flammable liquids.

It controls the actuation of pumps or valves to regulate the levels and is also suitable for protecting submersible pumps against running empty, or protecting tanks from “overflow”. It can also be used to control dosing of liquids in mixing processes.

• Some examples of liquids in which the RM3LG2 relay can be used:

- spring, town, industrial and sea water

- metallic, acid or basic salt solutions

- liquid fertilizers

- non concentrated alcohol (< 40 %)

- liquids in the food processing industry: milk, beer, coffee, etc.

• Some examples of liquids in which the RM3LG2 relay CAN NOT be used:

- chemically pure water

- fuels, liquid gasses (flammable)

- oil, concentrated alcohol (> 40 %)

- ethylene, glycol, paraffin, varnish and paints

Presentation

RM3 LG2

A1 A2

16

15 18

1

1

Response sensitivity potentiometer (in kW).

R

The yellow LED labeled with an R indicates that the output relays have been energized when it is illuminated.

U

The green LED labeled with a U (Supply voltage) indicates that supply voltage is present to the RM3 relay when illuminated.

R

U

Operating principle

The operating principle is based on a change in the resistance measured between immersed or non immersed electrodes.

The electrodes may be replaced by other sensors or probes which transmit values representing variations in resistance

(Refer to page 39, “Setting-up”).

• 3 electrodes (1)

B1 B2 B3 B1 B2 B3 B1 B2 B3 B1 B2 B3 B1 B2 B3 B1 B2 B3

B2 high level

B2 low level

B1 ground electrode

(reference)

Relay

15-18

15-16

U supply A1-A2

Note: If a metallic tank is used, the ground electrode (B1) can be eliminated by connecting the cable directly to one of the tank’s metallic surfaces.

(1) This product can be used with only 2 electrodes.

In this case, electrode B2 performs both the high level and low level functions. The absence of a time delay can cause oscillation of the output relay (wave effect).

38

RM3 Specialty Relays

RM3LG2 Liquid Level Control Relay

Wiring, Approximate Dimensions, and Setup Information

Wiring

A1 15 B3

B1 B2

18 16 A2

Approximate dimensions

A1-A2

Supply voltage

B1, B2, B3

Electrodes

(see table to the right)

15-18

15-16

C/O (Form C) contact of output relay

Electrodes and levels controlled

B1

B2

B3

Ground electrode

Max. level

Min. level

Dimensions

Inches

MM

3.94 / 100

Setup information

RM3 LG2

A1 A2

16

15 18

R

U

.885/22.5

2-conductor cable in cylindrical sheath

(max. Ø 6.3 mm)

Level electrode

Reference electrode

(skirt)

Set the potentiometer to the minimum value.

Connect the electrodes as shown below.

Apply power to terminals A1 and A2.

When all the electrodes are simultaneously immersed in the liquid to be monitored, slowly turn the potentiometer towards the maximum value (100 W) until the relay is energized. Exceed the tripping threshold of the relay by 10 kW to compensate for variations in the supply voltage. (The relay may already be energized before turning the potentiometer). If the relay will not energize, a more sensitive device must be used (greater ohmic value): see RM3LA1.

Then check that the relay de-energizes correctly as soon as electrodes EH and EB are out of the liquid (see examples below). If the relay does not de-energize, select a less sensitive device (see RM3LA1).

The electrode connection point must be protected against corrosion, by sticking or sealing. In areas where thunderstorms are likely to occur, measures must also be taken to protect the electrode lines.

Probe LA9RM201

This probe is of the “suspended” type. It is coaxial; i.e. in addition to the normal (central) electrode, the stainless steel skirt can also act as ground (reference) electrode, which means that there is no need to install a separate reference probe. In this way, for controlling one level, only one probe is required instead of 2; for controlling 2 levels, only 2 probes are required instead of 3.

The connecting cable must be of the “2-conductor” type with common cylindrical PVC sheath, having a maximum diameter of 6.3 mm. The skirt also acts as a “calming chamber”, so avoiding inaccuracy due to an agitated surface of the liquid (waves).

Maximum operating temperature: 212

°

F (100

°

C).

Connection examples

Control by electrodes

A1 15 B1 B2 B3

EH

High level

Low level

Control by probes

RM3-LG2

B2

B3

B1

B2

B1

M

EB

EB

M

EH EH

M

16 18 A2

2 levels 1 level

EH = High level electrode

EB = Low level electrode

M = Reference electrode (common)

39

RM3 Specialty Relays

RM3LG2 Liquid Level Control Relay

Ordering Information

Liquid level relay

Fixed time delay

ms

250

Sensitivity

Scale

Ω

5 to 100

Control Circuit

Voltage 50/60 Hz

V

24

110 to 130

220 to 240

380 to 415

Catalog

Number

RM3LG201B7

RM3LG201FG7

RM3LG201MU7

RM3LG201QN7

Weight

lb./(kg)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

0.43/(0.195)

RM3LG2

Liquid level control probe

Type of installation

Suspended by cable

Maximum operating temperature

212

°

F (100

°

C)

Catalog

Number

LA9RM201

Weight lb./(kg)

0.22/(0.100)

LA9RM201

Accessories (to be ordered separately)

Description

Sealing cover (22.5mm width)

Replacement Marking Tab

Catalog

Number

LA9RE02

LA9D92

Weight lb./(kg)

0.01/(0.003)

0.01/(0.001)

LA9RE02

40

RM3 Specialty Relays

RM3LG2 Liquid Level Control Relays

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vac

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

V

VA

24

1.9

110 to 130

2.6

220 to 240

2.4

380 to 415

2.9

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Operating status indication

IEC

UL

IEC

UL

AC-15, 220 V

NEMA

Fixed

U Green LED on

R Yellow LED on

V

V

A

A

A ms

300

4

5

1.5

1

Energized when the high level electrode is immersed and de-energized when the low level electrode is no longer immersed

250

B300

250

Supply Voltage (U supply) is present to the relay.

Output relay is energized.

Electrode circuit characteristics (1)

Sensitivity scale

Maximum electrode voltage

Maximum electrode current

Adjustable

Vac

Ω

V mA

5 to 100

30

1

Maximum cable capacity

Maximum cable length nF m

10

100

(1) The electrodes may also be built into the probes. The probes are designed to be either fixed to a tank, by means of a bracket with a seal (closed tanks), or suspended by their own electrical connecting cable (bore holes, etc.).

Refer to “Setting-up” (Probe LA9RM201) section on page 39.

41

RM3 Specialty Relays

RM3LA1 Liquid Level Control Relay

Operating Principles

RM3LA1

This device monitors the levels of conductive liquids. Do not use with flammable liquids.

It controls the actuation of pumps or valves to regulate the levels.

It is also suitable for protecting submersible pumps against running empty, or protecting tanks from “overflow”. It can also be used to control dosing of liquids in mixing processes.

• Some examples of liquids in which the RM3LA1 can be used with:

- spring, town, industrial and sea water

- metallic, acid or basic salt solutions

- liquid fertilizers

- non concentrated alcohol (< 40 %)

- liquids in the food processing industry : milk, beer, coffee, etc.

• Some examples of liquids in which the RM3LA1 CAN NOT be used with:

- chemically pure water

- fuels, liquid gasses (flammable)

- oil, concentrated alcohol (> 40 %)

- ethylene, glycol, paraffin, varnish and paints

RM3 LA1

1

Selector for time delay on energization or on de-energization of the relay.

1

2

0.1 to 10 second time delay potentiometer.

A1 A2

16

15 18

26

25 28

3

3

Sensitivity range adjustment (5k, 50k or 500k).

4

2

4

Fine sensitivity adjustment

5k range (potentiometer setting times 0.1).

50k range (potentiometer setting times 1).

500k range (potentiometer setting times 10).

R

U

U

The green LED labeled with a U (Supply voltage) indicates that the supply voltage is present to the RM3 relay when illuminated.

R

The yellow LED labeled with an R indicates that the output relay is energized when it is illuminated.

Operating principle

The operating principle is based on a change in the resistance measured between immersed or non immersed electrodes.

The electrodes may be replaced by other sensors or probes which transmit values representing variations in resistance

(Refer to page 43, “Setting-up”).

Time delay on filling (1) Time delay on emptying (1)

• 2 electrodes

Max. level

Min. level

B1 B2 B1 B2 B1 B2 B1 B2 B1 B2 B1 B2

2 Form C relay

U supply A1-A2

15-18

15-16

25-28

25-26 t t

• 3 electrodes

B1 B2 B3 B1 B2 B3 B1 B2

B3

B1 B2

B3

B1 B2 B3 B1 B2 B3

Max. level

Min. level

Ground electrode

(reference)

15-18

15-16

2 Form C relay (1)

25-28

25-26

U supply A1-A2 t t

Note : If a metallic tank is used, the ground electrode (B1) can be eliminated by connecting the cable directly to one of the tank’s metallic surfaces.

(1) Level exceeded, see page 43 “Setting-up”.

42

RM3 Specialty Relays

RM3LA1 Liquid Level Control Relay

Wiring, Approximate Dimensions, and Setup Information

Wiring

A1 15 25 B1 B2 B3

16 18 28 26 A2

Approximate dimensions

A1-A2

B1, B2, B3

15-18

15-16

25-28

25-26

Supply voltage

Electrodes

(see table to the right)

1 st C/O (Form C) contact of output relay

2 nd

C/O (Form C) contact of output relay

Electrodes and levels controlled

B1

Ground electrode

B2

B3

Max. level

Min. level

Dimensions

Inches

MM

3.94 / 100

Setup information

A1 A2

16

15 18

26

25 28

RM3 LA1

R

U

2-conductor cable in cylindrical sheath

(max. Ø 6.3 mm)

Level electrode

Reference electrode

(skirt)

1

3

4

2

1.77 / 45

Set potentiometers 4 and 2 to the minimum value and set switch 3 to 5 k.

Connect the electrodes as shown below.

Apply power to terminals A1 and A2.

When all the electrodes are simultaneously immersed in the liquid to be monitored, slowly turn the sensitivity potentiometer 4 towards the maximum value (50) until the relay is energized. (The relay may energize before turning the potentiometer. If it does you are finished with this step.). If the relay will not energize, set potentiometer 4 back to its minimum setting and turn switch 3 to 50k and repeat the above procedure. If the relay still doesn’t energize, set potentiometer 4 back to its minimum setting again and turn switch 3 to 500k and repeat the above procedure. If the relay still doesn’t energize, this relay will not work for the application.

Then make sure the relay de-energizes correctly when electrodes EH and EB are removed from the liquid.

Note : The maximum level EH on a time delay on filling application can be raised by means of the adjustable time delay from 0.1 to 10 seconds, using function . The minimum level EB on a time delay on emptying application can be lowered by means of the adjustment delay from 0.1 to 10 seconds, using function .

The electrode connection point must be sealed to protect against corrosion. In areas where thunderstorms are likely to occur, the electrode lines must be protected.

Probe LA9RM201

This probe is of the “suspended” type. It is coaxial ; i.e. in addition to the normal (central) electrode, the stainless steel skirt can also act as ground (reference) electrode, which means that there is no need to install a separate reference probe. In this way, for controlling one level, only one probe is required instead of 2 ; for controlling 2 levels, only 2 probes are required instead of 3.

The connecting cable must be of the “2-conductor” type with common cylindrical PVC sheath, having a maximum diameter of 6.3 mm. The skirt also acts as a “calming chamber”, so avoiding inaccuracy due to an agitated surface of the liquid (waves).

Maximum operating temperature: 212

°

F (100

°

C).

Control by electrodes

A1 15 25 B1 B2 B3

EH

High level

Low level

Control by probes

RM3-LA1

B2

B3

B1

B2

B1

16 18 28 26 A2

M

EB

EB

M

2 levels

EH EH

M

1 level

EH = High level electrode

EB = Low level electrode

M = Reference electrode (common)

43

RM3 Specialty Relays

RM3LA1 Liquid Level Control Relay

Ordering Information

Liquid level control relays

Adjustable time delay

Sensitivity

Scale

Seconds

0.1 to 10

Ω

250 to 500

Control Circuit

Voltage

(Vac are 50/60 Hz)

24 to 240 Vac or 24 to 240 Vdc

24 Vac

110 to 130 Vac

220 to 240 Vac

380 to 415 Vac

Catalog

Number

RM3LA111MW

RM3LA111B7

RM3LA111FG7

RM3LA111MU7

RM3LA111QN7

Weight

lb./(kg)

0.54/(0.245)

0.54/(0.245)

0.54/(0.245)

0.54/(0.245)

0.54/(0.245)

RM3LA1

Liquid level control probe

Type of installation

Suspension by cable

Maximum operating temperature

212

°

F (100

°

C)

Catalog

Number

LA9RM201

Weight lb./(kg)

0.22/(0.100)

LA9RM201

Accessories (to be ordered separately)

Description

Sealing cover (45mm width)

Replacement Marking Tab

Catalog

Number

LA9RM301

LA9D92

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

44

RM3 Specialty Relays

RM3LA1 Liquid Level Control Relay

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vdc

Vac

Vdc

Output relay and operating characteristics

Number of C/O (Form C) contacts

V

V

VA

W

24 to 240

24 to 240

2 to 7

2.4

2

24

–

3.1

–

110 to 130

–

2.7

–

220 to 240

–

2.6

–

380 to 415

–

3.4

–

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Operating status indication

IEC

UL

IEC

UL

AC-15

NEMA

Adjustable

U Green LED on

R Yellow LED on

A

A

V

V sec.

Energized when the high level electrode is immersed and de-energized when the low level electrode is no longer immersed

400

300

5

5

230 V-3 A, 400 V-2A

B300

0.1 to 10

Supply voltage is present to the relay.

Output relay is energized.

Electrode circuit characteristics

Maximum electrode voltage

Definition of electrodes

and cables (1) a.c. supply

Sensitivity scale

Ω

250 to 5 k

V

20

Maximum electrode current

10 mA

Maximum cable capacity

200 nF

Maximum cable length

1000 m

2.5 to 50 k

25 to 500 k

4 mA

0.5 mA

25 nF

4 nF

100 m

20 m

(1) The electrodes may also be built into the probes. The probes are designed to be either fixed to a tank, by means of a bracket with a seal (closed tanks), or suspended by their own electrical connecting cable (bore holes, etc.).

Refer to page 43 “Setting-up” (Probe LA9RM201).

45

RM3 Specialty Relays

RM3PA1 Insulation Control Relay

Operating Principles

RM3PA1

This device monitors the presence of an insulation resistance on an a.c. supply (with neutral insulated from ground) and the ground connection.

• The RM3PA1 insulation control relay is only for equipment monitoring and should not be

used for personnel electrical protection.

Its detection threshold range is 1 to 110 kW.

A fault memory is possible (automatic or manual, local or remote reset), refer to page 47 “Setting-up”.

A pushbutton on the front face of the relay allows an “ground fault” TEST to be performed. This test can also be performed remotely, the LED on the front of the relay indicates the various states, refer to page 47 “Setting-up”.

Applications on a.c. supply

3-phase supplies : Single-phase supplies :

- without neutral conductor, - control circuit of automation equipment,

- with artificial neutral, - control circuit,

- with insulated neutral. - any auxiliary control circuit galvanically isolated from the mains supply.

F

A1 A2

16

15 18

U

RM3 PA1

1

2

1

Resistance range selector (11k or 110k W).

2

Fine resistance setting potentiometer

11k range (potentiometer setting times 1)

110k W range (potentiometer setting times 10)

F

The red LED labeled with a F indicates that the output relay has been energized when it is illuminated.

U

The green LED labeled with a U (Supply Voltage) indicates that supply voltage is present to the RM3 relay when illuminated.

Operating principle

The supply voltage is connected to terminals A1-A2 or A1-B2. Its value can be identical to that of the supply to be monitored.

A continuous voltage (Terminal L) is connected between one phase (or neutral if present) of the installation and ground

(s terminal).

L1

L2

L3

N

As soon as a ground insulation fault occurs, it causes a non infinite resistance to appear between the installation and ground. A fault current is established and this current then passes through the so-called “insulation” resistance.

A1

RM3-PA1

A2

L

+

–

When this current exceeds a value corresponding to the preset threshold resistance, the output relay is energized with a time delay (refer to curve on page 47 “Setting-up”) and a fault indicator illuminates on the relay.

K1

K2

R1

R2

Purpose of continuous insulation monitor RM3PA1

The main purpose of this device is to indicate the first insulation fault in an installation in order to protect it against incorrect operation due to the appearance of a second fault.

On the figure to the left, resistances R1 and R2, corresponding to two successive insulation faults, are in series and can keep K2 energized when contact K1 is open.

This incorrect operation can have very serious consequences in some installations.

Functional diagram

Remote

U supply A1-A2/B2

{

Reset S1/S2

Test S1/ s

On RM3 Test Reset

Insulation resistance

Relay

15-18

15-16 t t T t T

46

Wiring

R < s

A1 15 S1 S2 s

16 18 L B2 A2

Approximate dimensions

RM3 Specialty Relays

RM3PA1 Insulation Control Relay

Wiring, Approximate Dimensions, and Setup Information

Supply voltages :

Mixed Vac or Vdc

A1-A2

24 to 240 V

Dual voltage Vac 50/60 Hz

A1-B2

110 to 130 V

A1-A2

220 to 240 V

L, s

S1- s

S1-S2

15-18

15-16

Insulation measurement

(see table to the right)

Remote TEST

Remote Reset

C/O (Form C) contact of output relay

Connection and values of the 2 resistance ranges to be controlled

RM3PA101

L to s 1 to 11 k

Ω

10 to 110 k

Ω depending on setting of switch 1

Dimensions

Inches

MM

3.94 / 100 1.77 / 45

Setup information

Fault memory

Short-circuiting of terminals S1 and S2 (see scheme to the right) allows the fault to be memorized as soon as it appears, even if only briefly. The duration of the fault must exceed the response time of the relay (see curve below) for it to be detected.

If this short-circuiting is achieved by means of a N/C pushbutton, this acts as the remote reset button (if the fault has disappeared). Manual local resetting is achieved by briefly pressing (less than 0.5 s) the RESET/TEST button on the front of the relay.

Test

When the installation being controlled does not have an insulation fault, pressing the RESET/TEST button on the relay causes 2 simultaneous actions:

- the measuring input terminal not connected to ground (L) is disconnected from the line being controlled,

- a resistance (internal) of 820 W is connected to this input in order to simulate an insulation fault.

The relay must then react in the same way as for a real fault.

A N/O pushbutton may be connected to terminals S1 and s which will act as the remote test button and which will have the same effect as the built-in test button

(See scheme to the right).

Sec

1

R is

2 4 6 10 20 k

Ω

40 60 100

3

RM3 PA1 t

A

2.5

1

2

1.5

2

1

F

A1 A2

16

15 18

U

0.5

0.1

1 10 t

A

= Delay on energization

R im

R im

= Insulation resistance measured

R is

= Insulation resistance threshold

100 k

Ω

Basic scheme of the installation

External Test

External Reset

A1 15 S1 S2 s

Installation controlled

P S

R < s

L1

L2

L3

N

16 18 L B2 A2

Various schemes depending on maximum voltages

• The RM3PA1 insulation control relay can only monitor circuits with:

• A maximum of 415 VAC phase-phase when terminal L is connected to the

neutral of a 3 phase circuit.

• A maximum of 240 VAC phase-phase when terminal L is connected to a

phase of a 2 or 3 phase circuit.

380 to 415 V without neutral 220 to 415 V with insulated neutral

P

S P

S

L1

L1

L2

L3

3 x R

L2

L3

N

A1 L artificial

A1 L c

A2

RM3-PA1 s neutral c

A2

RM3-PA1 s

R = 82 k

Ω

/5 W at 415 V

68 k

Ω

/ 5 W at 380 V

75 k

Ω

/ 5 W at 400 V

Note : one single RM3 per supply monitored

110 to 240 V single-phase

P S

A1 c

A2

L

RM3-PA1 s

220 to 240 V without neutral

P

S

L1

L2

L3

A1 c

A2

L

RM3-PA1 s

47

RM3 Specialty Relays

RM3PA1 Insulation Control Relays

Ordering Information

Insulation control relay

Insulation

Measurement

k

Ω

1 to 110

Control Circuit

Voltage

V

24 to 240 Vac 50/60 Hz or 24 to 240 Vdc

110 to 130 Vac 50/60 Hz or 220 to 240 Vac 50/60 Hz

Catalog

Number

RM3PA101MW

RM3PA101FU7

Weight

lb./(kg)

0.55/(0.250)

0.55/(0.250)

RM3LA1

Accessories (to be ordered separately)

Description

Sealing cover (45mm width)

Replacement Marking Tab

Catalog

Number

LA9RM301

LA9D92

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

48

RM3 Specialty Relays

RM3PA1 Insulation Control Relay

Application Data

Environment

Conforming to standards

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vdc

Vac

Vdc

Output relay and operating characteristics

Number of C/O (Form C) contacts

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

Time delay

Relay resetting threshold

(tripping of relay)

Operating status indication

IEC

UL

IEC

UL

AC-15, 250 V

NEMA

Delay on energization

Fixed setting

V

V

A

A

A

U Green LED on

F Red LED on

Measuring input characteristics

Setting range

Minimum internal resistance

Internal test resistance

Maximum insulation voltage

Measurement voltage

Maximum length of

Test or Reset cable

Vac or Vdc

Between L and s

Vdc

k

Ω

k

Ω

Ω

V

V m

V

V

VA

W

UTE 63080, DIN 0413 (part 2), VDE 0413 part. 2

24 to 240

24 to 240

4.5

4.5

110 to 130

–

2.5

–

1

Energized on detection of an insulation fault

400

5

5

300

6

B300

See curve page 47.

1.6 times the insulation resistance value set

Supply Voltage (U supply) is present to the relay.

Relay is energized on detection of fault

1 to 11, 10 to 110 k

Ω

100

820

415

30 maximum

10

220 to 240

–

2.5

–

49

RM3 Specialty Relays

RM3EA1 Sensitive Contact Protection Relay

Operating Principles

RM3EA1

This device relays, protects and amplifies a low level “Discrete” output. It may be used with or without memory function.

The adjustable time delay from 0.05 to 30 seconds avoids oscillations of the relay in the event of interference or bouncing of the contact to be protected.

It can be controlled by a mechanical contact or by a 3-wire solid state switch (see examples on page 51, “Setting-up”).

Applications :

- protection,

- ensuring reliability,

- amplification of low level outputs on measuring devices, sensors, probes etc.

Presentation

A1 A2

16

15 18

26

25 28

R

U

RM3 EA1

1

2

1

Time delay range selector switch (0.05 to 1 second and

1.5 to 30 seconds).

2

Fine adjustment time delay potentiometer.

R

The yellow LED labeled with an R indicates that the output relay has been energized when it is illuminated.

U The green LED labeled with a U (Supply Voltage)

indicates that supply voltage is present to the RM3 relay when illuminated.

Operating principle

The supply voltage is connected to terminals A1-A2.

Protection of “Discrete” contacts

A1

A2

RM3-EA

Contact to be protected

The RM3’s output relay is energized when terminals Y1-Y2 are connected to the contact to be protected and this contact is closed.

Protection of contacts with memory (latching)

A1

A2

RM3-EA

Contact to be protected

The RM3’s output relay is energized when terminals Y1-Y3 are connected to the contact to be protected and this contact is closed for a time > 20 ms.

It remains energized after opening of Y1-Y3.

It de-energizes when Y1 - Y4 are short-circuited.

Functional diagram

U supply A1/A2

Y1/Y2

Contact to be protected

Y1/Y3

Y1/Y4

Relay

15-18

15-16

25-28

25-26 t : time delay t t t

50

RM3 Specialty Relays

RM3EA1 Sensitive Contact Protection Relay

Wiring, Approximate Dimensions, and Setup Information

Wiring

Y1

A1 15 25 Y2 Y3 Y4

16 18 28 26 Y1 A2

Approximate dimensions

A1-A2

Y1, Y2,

Y3, Y4

15-18

15-16

25-28

25-26

Supply voltage

Connection of contacts to be monitored (see table to the right)

1 st C/O (Form C) contact of output relay

2 nd

C/O (Form C) contact of output relay

Connection and type of protection

RM3EA1•1 Y1-Y2 Protection of “Discrete” contact

Y1-Y3

Protection of contact with memory “Latching” :

Energization

Y1-Y4 De-energization

Dimensions

Inches

MM

3.94 / 100

Setup information

Energization by 3-wire NPN solid state switch

On : the relay is energized (Y1-Y3).

Off : the relay is de-energized (Y1-Y4).

NPN

+

UB

Y1

Y3/

–

UB

Y4/

–

UB

1.77 / 45

Relays having two contacts with common point may be connected to two separate RM3EA1 relays.

The common point of the contacts must be connected to terminal Y2 of each RM3EA1.

Y2

(RM3-EA N°1)

(RM3-EA N°2)

Y1 (RM3-EA N°1)

Y1 (RM3-EA N°2)

51

RM3 Specialty Relays

RM3EA1 Sensitive Contact Protection Relay

Ordering Information

Sensitive contact protection relays

Time Delay

Seconds

0.05 to 30

None

Control Circuit

Voltage

Vac 50/60Hz

24

110 to 130

220 to 240

380 to 415

24

110 to 130

220 to 240

380 to 415

Catalog

Number

RM3EA111B7

RM3EA111FG7

RM3EA111MU7

RM3EA111QN7

RM3EA101B7

RM3EA101FG7

RM3EA101MU7

RM3EA101QN7

Weight

lb./(kg)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

0.68/(0.310)

RM3EA1

Accessories (to be ordered separately)

Description

Sealing cover (45mm width)

Replacement Marking Tab

Catalog

Number

LA9RM301

LA9D92

Weight lb./(kg)

0.01/(0.005)

0.01/(0.001)

LA9RM301

52

RM3 Specialty Relays

RM3EA1 Sensitive Contact Protection Relay

Application Data

Control circuit characteristics

Rated supply voltage (Un)

Average consumption at Un

Vac 50-60 Hz

Vac

Output relay and operating characteristics

Number of C/O (Form C) contacts

V

VA

24

3.4

110 to 130

3.4

220 to 240

3.4

2

Output relay state

Rated operational voltage

(switching)

Conventional thermal current

Rated breaking capacity

IEC

UL

IEC

UL

AC-15

NEMA

Adjustable

A

A

V

V

See diagram on page 50 and the note (1) below.

400

300

5

5

230 V-3 A, 400 V-2 A

B300

0.05 to 30

50

20

Time delay on energization

Time delay on de-energization

Minimum closing time for

memory (latching)

Operating status indication sec.

ms ms

U Green LED on

R Yellow LED on

Supply Voltage (U supply) is present to the relay.

Relay is energized.

Measuring input characteristics

Resistance

Energization guaranteed

De-energization guaranteed

Vdc current

“Discrete” contacts Y1-Y2 < 6.5 k

Ω

“Latching” contacts Y1-Y3 < 6.5 k

Ω

“Discrete” contacts Y1-Y2 > 19 k

Ω

“Latching” contacts Y1-Y4 < 16 k

Ω

<10

< 3

No-load voltage

Switching current

V mA

Continuous voltage applied

(maximum)

3-wire control,

Vdc current

V

< 30

(1) If circuits Y1-Y3 and Y1-Y4 are closed, the output relay is energized.

The relay memory is reset to zero when the power supply is switched off.

In the event of a power failure, the relay de-energizes and is re-energized at switch-on only if circuit Y1-Y3 is closed.

380 to 415

3.4

53

RM3 Specialty Relays

Notes:

54

Notes:

RM3 Specialty Relays

55

RM3 Specialty Relays

Notes:

56

From single products to complete systems, look to Square D.

Square D Company is a leading manufacturer and supplier of electrical distribution, automatic and industrial control products. The full line of Square D and Telemecanique brand products are available from an extensive network of

Square D distributors located throughout

North America.

Square D Company is part of

Groupe Schneider, a global manufacturer of electrical distribution, automation and industrial equipment.

Square D has been serving industrial and construction markets, as well as public utilities, individual consumers and government agencies for over 90 years.

We offer unsurpassed quality, innovative design and a committed staff of trained sales representatives and service technicians willing to stand behind every product we sell.

For further information on how we can help fill your electrical needs, call your local Square D field representative or authorized Square D distributor.

Square D Company

P.O. Box 27446

Raleigh, N.C. 27611, USA

Telemecanique ® is a registered trademark of Telemecanique.

8430CT9601 June 1996 Printed in USA 5M FP 6/96

©

1996 Square D All Rights Reserved