Omron 61F-G, 61F-G1, 61F-G2, 61F-G3, 61F-G4 User Manual

Floatless Level Switch (Basic Type)

Refer to Safety Precautions for Floatless Level
Controllers.

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61F-@@

61F-G@

Basic Building-block Controllers That Mount
Directly to Panels for Easier Maintenance

• Easy maintenance with building-block Relay Units.

• Easy identification of operating status with LED operation
indicator.

• Lineup includes models for tropical regions and for high
temperatures. Achieve stable detection even in high­temperature environments.

Model Number Structure

CSM_61F-G__DS_E_4_2

1. Control Application

G: Automatic water supply and drainage
G1: Automatic water supply with idling prevention or water

shortage alarm

G2: Automatic water supply and drainage with abnormal

water increase alarm

G3: Automatic water supply and drainage with full tank and

water shortage alarm

G4: Automatic water supply with water level indicator for

water supply tank and water receiving tank and
prevention of idling due to water shortage

I: Liquid level indication and alarm (no two-wire models)

2. Type

Blank: General-purpose
L 2KM: Long-distance (for 2 km)
L 4KM: Long-distance (for 4 km)
H: High-sensitivity
D: Low-sensitivity
R: Two-wire
T: High-temperature

Position of
LED indicator

1

2

Ordering Information

Type Set contents General-purpose Long-distance, 2 km Long-distance, 4 km High-sensitivity

Model Model Model Model

Application G 61F-G Base x 1

Application G1 61F-G1 Base x 1

Application G2 61F-G2 Base x 1

Application G3 61F-G3 Base x 1

Application G4 61F-G4 Base x 1

Application I 61F-I Base x 1

Relay Unit 61F-11@ Units x 1 61F-11 61F-11L 2KM 61F-11L 4KM 61F-11H

Application

Application

Application

Application

Application

Application

Relay Unit

61F-11@ Units x 1

61F-11@ Units x 2

61F-11@ Units x 2

61F-11@ Units x 3

61F-11@ Units x 5
MK3P Relay x 1

61F-11@ Units x 2

Type Set contents Low-sensitivity 2-wire Tropical environments High-temperature

G 61F-G Base x 1

61F-11@ Units x 1

G1 61F-G1 Base x 1

61F-11@ Units x 2

G2 61F-G2 Base x 1

61F-11@ Units x 2

G3 61F-G3 Base x 1

61F-11@ Units x 3

G4 61F-G4 Base x 1

61F-11@ Units x 5
MK3P Relay x 1

I 61F-I Base x 1

61F-11@ Units x 2
61F-11@ Units x 1 61F-11D 61F-11R --- 61F-11T

61F-G 61F-GL 2KM 61F-GL 4KM 61F-GH

61F-G1 61F-G1L 2KM 61F-G1L 4KM 61F-G1H

61F-G2 61F-G2L 2KM 61F-G2L 4KM 61F-G2H

61F-G3 61F-G3L 2KM 61F-G3L 4KM 61F-G3H

61F-G4 61F-G4L 2KM 61F-G4L 4KM 61F-G4H

61F-I 61F-IL 2KM 61F-IL 4KM 61F-IH

Model Model Model Model

61F-GD 61F-GR 61F-G-TDL 61F-GT

61F-G1D 61F-G1R 61F-G1-TDL 61F-G1T

61F-G2D 61F-G2R 61F-G2-TDL 61F-G2T

61F-G3D 61F-G3R 61F-G3-TDL 61F-G3T

61F-G4D 61F-G4R 61F-G4-TDL 61F-G4T

61F-ID --- 61F-I-TDL 61F-IT

61F-G@

Note: 1. When ordering, specify the desired operating voltage at the end of the model number.

Example: 61F-G [110/220 VAC]

Desired supply voltage

2. If you order with a standard model number, the corresponding Relay Units are also delivered as part of a set.

If you order the 61F-G, one 61F-11 Relay Unit is included in the set.

Specifications

• Advanced Operation

With advanced operation, the internal relay
operates as soon as control power is
supplied to the G1F and is reset when current
flows between the poles. Wiring is the same
as for models with sequential operation.

■ Standard Models

Specifications

61F-G@

Items General-purpose

Controlling materials
and operating condi­tions

Supply voltage 100, 110, 120, 200, 220 or 240 VAC; 50/60 Hz

Operating voltage range

InterElectrode voltage 8 VAC 24 VAC 8 VAC

InterElectrode current Approx. 1 mA AC max.
Power consumption 61F-G@: 3.5 VA max.; G1F-G1@, G1F-G2@, or G1F-I@: 5.5 VA max.; G1F-G3@: 7.5 VA max.; G1F-G4@: 14.5 VA max.

InterElectrode operate
resistance

InterElectrode release
resistance

Cable length
(see note 3)

Control output 2 A, 220 VAC (Inductive load: cosφ = 0.4)

Ambient temperature Operating: –10 to 55°C (–10 to 70°C for 61F-@T)

Ambient humidity Operating: 45% to 85% RH

Insulation resistance
(see note 4)

Dielectric strength
(see note 4)

Life expectancy Electrical: 500,000 operations min.

Weight 61F-G@: Approx. 380 g, G1F-G1@, G1F-G2@, or G1F-I@: Approx. 750 g;

Note: 1. The @ in the model name represents G, G1, G2, G3, G4, and I.

2. The suffix “TDL” attached to the model name represents models designed for tropical regions (storage humidity of 45% to 90%). For

details, refer to Safety Precautions for Floatless Level Controllers.

3. The length when using completely-insulated, 600-V, 3-conductor (0.75 mm
the cable diameter or number of conductors becomes larger. For details, refer to Safety Precautions for Floatless Level Controllers.

4. The insulation resistance and dielectric strength indicate values between power terminals and Electrode terminals, between power ter­minals and contact terminals, and between Electrode terminals and contact terminals.

5. Possible to use with 15 kΩ or less, however, this may cause reset failure.

6. High-sensitivity Controllers use advanced operation.

When the power supply voltage is applied, if there are some liquids between the electrodes (ground and operation electrodes), the inter­nal relay will not operate.
When the power supply voltage is applied, if there are no liquids between the electrodes (ground and operation electrodes), the internal
relay will operate.

Controller

61F-@ (TDL)

(see note

1 and 2)

For control of ordi­nary purified water
or sewage water

85% to 110% of rated voltage

0 to approx. 4 kΩ 0 to approx. 5 kΩ 0 to approx.

Approx. 15 k to ∞Ω Approx. 15 k to ∞Ω4 k to ∞Ω (for

1 km max. 600 m max. 2 km max.

5 A, 220 VAC (Resistive load)

100 MΩ min. (at 500 VDC)

2000 VAC, 50/60 Hz for 1 min.

Mechanical: 5,000,000 operations min.

G1F-G4@: Approx. 1,710 g

High-

temperature

Controller

61F-@T

(see note 1)

For control of ordi­nary purified water
or sewage water
in cases where the
ambient tempera­ture is high.

Long-distance

Controllers

61F-@L 2KM

(for 2 km)

61F-@L 4KM

(for 4 km)

(see note 1)

For control of ordi­nary purified water
in cases where the
distance between
sewage pumps
and water tanks or
between receiver
tanks and supply
tanks is long or
where remote
control is required.

1.8 kΩ (for 2 km)
0 to approx.

0.7 kΩ (for 4 km)

2km)

2.5 k to ∞Ω (for
4km)

4 km max.

High-sensitivity

Controllers

61F-@H

(see note 1)

For control of liq­uids with high
specific resis­tance such as dis­tilled water

Approx. 15 kΩ to
70 kΩ
(see note 5)

Approx. 300 k to ∞ΩApprox. 5 k to ∞Ω Approx. 15 k to

50 m max. 1 km max. 800 m max.

2

) cabtire cables. Usable cable lengths will become shorter as

Low-sensitivity

Controller

61F-@D

(see note 1)

For control of liq­uids with low spe­cific resistance
such as salt water,
sewage water,
acid chemicals, al­kali chemicals

0 to approx.

1.8 kΩ

-G3@: Approx. 930 g;

G1F

Two-wire

Controller

61F-@R

(see note 1)

For control of ordi­nary purified water
or sewage water
used in combina­tion with Two-wire
Electrode Holder
(incorporating a
resistor of 6.8 kΩ)
It is possible to wire
with less than one
wiring against gen­eral 61F’s wiring.

0 to approx. 1.1 kΩ

∞Ω

3

61F-G@

4

61F-G

61F-GT 61F-GL

61F-GH
(See note.)

61F-GD 61F-GR

24 V

8 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1E2

U

U

U

61F-11
Relay Unit

24 V

8 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1E2

U

U

U

61F-11T
Relay Unit

24 V

8 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1E2

U

U

U

61F-11L
Relay Unit

24 V

24 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1E2

U

U

U

61F-11H
Relay Unit

24 V

8 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1E2

U

U

U

61F-11D
Relay Unit

24 V

8 V

0 V

200, 220
or 240 V

100, 110
or 120 V

S

0 S1 S2 E3

Ta Tc Tb E1

U

U

U

61F-11R
Relay Unit

Internal Circuit Diagrams

The schematic diagrams shown below typify the internal connections of the various 61F models. The designations Ta, Tb, and Tc (sometimes
referred to collectively as “U”) may occur more than once in a product, however, the “a” terminal is always an NO contact, a “b” terminal is an NC
contact, and the “c” terminal is the common terminal.

61F-G@

61F-11

61F-11T 61F-11L

61F-11H
(see note)

61F-11D 61F-11R

X

7 6 58 4

39 1 210 11

ESS S

8 V 24 V 24 V

Tb

2 Ta 2 Tc2 Tc1 Ta 1 Tb1

x

x

X

7 6 58 4

39 1 210 11

ESS S

8 V 24 V 24 V

Tb

2 Ta 2 Tc2 Tc1 Ta 1 Tb1

x

x

X

7 6 58 4

39 1 210 11

ESS S

8 V 24 V 24 V

Tb

2 Ta 2 Tc2 Tc1 Ta 1 Tb1

x

x

X

7 6 58 4

39 1 210 11

ESS S

24 V 24 V 24 V

Ta

2 Tb2 Tc2 Tc1 Tb1 Ta 1

x

x

X

7 6 58 4

39 1 210 11

ESS S

8 V 24 V 24 V

Tb

2 Ta 2 Tc2 Tc1 Ta 1 Tb1

x

x

X

7 6 58 4

39 1 210 11

ESS S

8 V 24 V 24 V

Tb

2 Ta 2 Tc2 Tc1 Ta 1 Tb1

x

x

Tr

2

Tr 1

Tr 1 Tr 1

Tr 1

Tr 1

Tr 1

Tr 2

Tr 2

Tr 2

Tr 2

Tr 2

Tr 2

Note: The 61F11H relay deenergizes when there is water present across the Electrodes, whereas the 61F relay energizes when there is water

present across the Electrodes.
Also, the terminal connections of those Controllers provided with LED indicators differ from those which have no indicators.

61F-11 Relay Units

Item 61F-11 61F-11T 61F-11L 61F-11H 61F-11D 61F-11R

Interchangeable with
general-purpose mod­el (61F-11)

Color of band on name
plate

--- Provided Provided Not provided Provided Not provided

--- Red Yellow Blue Black Green

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