Omron G3PX-220EH-CT03, G3PX-220EUN, G3PX-260EUN, G3PX-240EUN, G3PX-260EH-CT03 User Manual

1

Power Controller G3PX

Single-phase Models

EUN

Series

AC Power Controller with Phase-control
System Allows Precise Temperature
Control
Models with Base-up and Soft-start
Functions Available

EH

Series

Phase Control System Makes It
Possible to Detect Disconnection of
Heaters

EC

Series

Optimum Device for Controlling Input
Power for Pure Metal Heater, and
Incorporates Overcurrent Detecting and
Single Heater Burnout Detecting
Functions

OMRON’s unique design and carefully-selected
materials made it possible to produce a compact
and lightweight Power Controller.

Replaceable, easy-to-install Power Device Car­tridge assures ease of maintenance.

Detecting

component failures and operating errors.

On applying for UL, CSA.

Ordering Information

EUN

Series

Phase Applicable

load

Level

indicator

Base-up function

(see note 1)

Soft-start time

Carry

current

Rated

voltage

Model

Single

Resistive load

Yes Yes

Approx. 0.5 to

20 A

100/1

10 V

AC

G3PX-220EUN

Heater

10 sec

40 A

200/230 V

AC

G3PX-240EUN

60 A

(see note 2)

G3PX-260EUN

Note: 1. The

base-up output with a 0-mA temperature controller

output (i.e. the temperature controller is OFF) dif

fers from that with a 4-mA

temperature

controller output. Refer the

Characteristics data

on page

67.

2.

When ordering, make sure that the rated voltage is 200/230 V

AC because the 200/220-V

AC G3PX exists as well.

G3PX

G3PX

2

EH

Series

Phase Applicable

load

Level

indicator

Single heater

burnout

detection

Multiple heater

burnout

detection

Carry

current

Rated

voltage

Model

(see note 1)

Single

Resistive load

Yes Yes No

20 A

100/1

10 V

AC

G3PX-220EH-CT03

Heater

00/

0

C

200/230 V

AC

G3PX-220EH-CT10

40 A

200/230 V

AC

(see note 3)

G3PX-240EH-CT03
G3PX-240EH-CT10

60 A

G3PX-260EH-CT03
G3PX-260EH-CT10

Y

es (see note 2)

Yes

20 A

G3PX-220EHN-CT03
G3PX-220EHN-CT10

40 A

G3PX-240EHN-CT03
G3PX-240EHN-CT10

60 A

G3PX-260EHN-CT03
G3PX-260EHN-CT10

Note: 1. EH- and EHN-series models are provided with a CT incorporating 30- or 100-cm-long lead wires and Power Device Cartridge.

When

ordering, specify the length of the lead wires by adding a code to the model number as shown below

.

G3PX-2j

0EH-CT03: CT with 30-cm-long lead wires

G3PX-2j

0EH-CT10: CT with 100-cm-long lead wires

2. Adjusts

the multiple heater burnout

detection sensitivity of EHN-series models. Enables single heater burnout detection in control of

a

maximum of five heaters.

3.

When ordering, Rated voltage should be made sure if it is for 200/230 V

AC. Otherwise 200/220 V

AC G3PX is existing.

EC

Series

Phase Applicable

load

Level

indicator

Constant-current

function

Single heater

burnout

detection

Carry

current

Rated

voltage

Model

(see note 1)

Single

Resistive load

Yes Yes Yes

20 A

100/1

10 V

AC

G3PX-220EC-CT03

Heater

00/

0

C

200/230 V

AC

G3PX-220EC-CT10

40 A

200/230 V

AC

(see note 2)

G3PX-240EC-CT03
G3PX-240EC-CT10

60 A

G3PX-260EC-CT03
G3PX-260EC-CT10

Note: 1. EC-series

models are provided with a CT Unit with lead wires (30- or 100- cm in length). When ordering, specify the length of the

lead

wires by adding a code to the model number as shown below

.

G3PX-2j

0EC-CT03: CT with 30-cm-long lead wires

G3PX-2j

0EC-CT10: CT with 100-cm-long lead wires

2.

When ordering, Rated voltage should be made sure if it is for 200/230 V

AC. Otherwise 200/220 V

AC G3PX is existing.

Accessories (Order Separately)

CT Unit

Name Length

of lead wires

Solderless terminals Applicable models

Model

CT Unit

0.3 m

Yes

G3PX-2jjEH G32X-CT03

CU

1 m

es

G32X-CT10

0.3 m

G3PX-2jjEHN G32X-CT03HN

1 m

G32X-CT10HN

0.3 m

G3PX-2jjEC G32X-CT03C

1 m

G32X-CT10C

Power Device Cartridge

Name Carry

current

Applicable models

Model

Power Device Cartridge

20 A

G3PX-220Ejj G32X-A20

oe eceCa dge

40 A

G3PX-240Ejj G32X-A40

60 A

G3PX-260Ejj G32X-A60

Note:

The G32X-A is a dedicated Power Device Cartridge for the G3PX.
Refer to

Replacement Parts

on page

75.

G3PX

G3PX

3

Specifications

Ratings

Control

Item G3PX-

220EUN/
240EUN/

260EUN

G3PX­220EH/
240EH/

260EH

G3PX­220EHN/
240EHN/

260EHN

G3PX­220EC/
240EC/

260EC

Rated

voltage

100/1

10, 200/230 V

AC

Frequency

50/60 Hz (see note 1)

Input
signal for
control

External
main
setting

2 kΩ

(type B, 2 W min.)

3 kΩ

(type B, 2 W min.)

2 kΩ

(type B, 2 W min.)

Current
input

4 to 20 mA (at 1 to 5 V) (Input impedance: 250Ω) (see note 3)

Voltage
ON/OFF
input

5 to 24 VDC (Input impedance: approx. 20 k

Ω)

External
duty
setting

3 kΩ (type B)

Relay output for
alarm

--- SPDT

: 8 A at 250 V

AC/30 VDC

Note: 1.

50/60 Hz (no selector required) (EUN Series)
Terminals 18 and 19 of EHN/EC-series models must be open when the supply frequency is 50 Hz. These terminals must be
short-circuited

when the supply frequency is 60 Hz.

2. Use

the G32X-V2K 2-kΩ V

ariable Resistor for external main setting on EUN, EC, and EHN (G32X-V3K 3-kΩ for EN-series models).

3. Input

4 to 20 mA or 1 to 5 VDC linear input to the 4 to 20 mA current input terminal.

Output

Model

Applicable load

Load voltage range

Load current

Inrush current

Number of phase

G3PX-220Ej
G3PX-220EjN

100/1

10, 200/230 V

AC

(50/60 Hz)

1 to 20 A (see note)

220 A (60 Hz, 1 cycle) Single

G3PX-240Ej
G3PX-240EjN

1 to 40 A (see note)

440 A (60 Hz, 1 cycle)

G3PX-260Ej
G3PX-260EjN

1 to 60 A (see note)

440 A (60 Hz, 1 cycle)

Note:

The G3PX-2jjEHN (model with multiple heater burnout detecting function) and G3PX-2jjEC (constant-current model) require
20% min. of the rated current to detect a short mode failure. EC-series models detect an open mode failure if the load current has
dropped

to 80% of the rated value. A short mode failure will be detected if the current has risen to 20% of the rated value.

Characteristics

EU/EH

Series

Item G3PX-220EUN/

240EUN/260EUN

G3PX-220EH/240EH/260EH G3PX-220EHN/

240EHN/260EHN

Operating

voltage

range

±10%

Operating frequency
range

±1 Hz

Output voltage
adjustable range

0% to 95%

Internal duty setting
range

0% to 100%

10% to 100% (see note 1)

0% to 100%

External duty setting
range

0% to 100%

10% to 100% (see note 1)

0% to 100%

Start-up time
(see note 2)

Approx. 0.5 to 10 s
(see note 3)

Approx. 0.1 to 1 s
(see note 3)

Approx. 0.5 to 10 s
(see note 3)

Base-up range

0% to 90%

---

Multiple heater burnout
detection

---

20% max. (see note 4)

G3PX

G3PX

4

Item G3PX-220EHN/

240EHN/260EHN

G3PX-220EH/240EH/260EHG3PX-220EUN/

240EUN/260EUN

Min. phase detection

---

Approx. 1/6

π

Min. phase setting

--- ---

Approx. 1/6

π

Min. load current for
ON error detecting

---

1 A

30% max. of rated current
(see note 5)

Abnormality detection
time

---

0.1 s max.

1 s max.

V

oltage drop with

output ON

1.6 V max. (RMS)

Leakage current

10 mA max. at 100/1

10 V

AC, 20 mA max. at 200/230 V

AC

Insulation resistance

100 MΩ min. (at 500 VDC)

Dielectric strength

2,000 V

AC, 50/60 Hz for 1 min.

V

ibration resistance

Malfunction: 10 to 55 Hz, 10G

Shock resistance

Malfunction: 300 m/s

2

Ambient temperature

Operating: –25°

C to 65°C (with no icing or condensation)

Storage: –10°

C to 55°C (with no icing or condensation)

Ambient humidity

Operating: 45% to 85%

Weight

G3PX-220EUN: approx. 1.1 kg
G3PX-240EUN: approx. 1.4 kg
G3PX-260EUN: approx. 1.7 kg

G3PX-220EH: approx. 1.1 kg
G3PX-240EH: approx. 1.4 kg
G3PX-260EH: approx. 1.7 kg

G3PX-220EHN: approx. 1.2 kg
G3PX-240EHN: approx. 1.5 kg
G3PX-260EHN: approx. 1.8 kg

Note: 1.

Duty setting does not complete to the OFF state (i.e. 10% remains).

2.

The start-up time is factory-set to 1 s on the EH Series, approx. 0.5 s on the EHN and EC Series.

3.

This is the initial start-up time with a 100% duty setting.

4.

Detection is effective when the set current is reduced by 20% or more.

5. The

minimum set value in the G3PX-220EHN is 6 A. If a lower value

is required, increase the number of wiring turns around the CT

.

EC

Series

Item G3PX-220EC G3PX-240EC G3PX-260EC

Operating

voltage range

±10%

Operating frequency range

±1 Hz

Output voltage adjustable
range

0% to 95%

Internal duty setting range

0% to 100%

External duty setting range

0% to 100%

Start-up time

Approx. 0.5 to 10 s

Min. load current for ON error
detecting

20% max. of rated current

Current limit range

0% to 100%

Excess current detection

Peak current of 1

10 A within

1 cycle

Peak current of 220 A within
1 cycle

Peak current of 330 A within
1 cycle

Constant current ±

3% max. with 10-time increment of load value

±

3% max. with ±10% change of voltage

Abnormality detection time

1 s max.

Voltage drop with output ON

1.6 V max. (RMS)

Leakage current

10 mA max. at 100/1

10 V

AC, 20 mA max. at 200/220 V

AC

Insulation resistance

100 MΩ min. (at 500 VDC)

Dielectric strength

2,000 V

AC, 50/60 Hz for 1 min.

V

ibration resistance

Malfunction: 10 to 55 Hz, 10G

Shock resistance

Malfunction: 300 m/s

2

Ambient temperature

Operating: –25°

C to 65°C (with no icing or condensation)

Storage: –10°

C to 55°C (with no icing or condensation)

Ambient humidity

Operating: 45% to 85%

Weight

G3PX-220EC: approx. 1.1 kg
G3PX-240EC: approx. 1.4 kg
G3PX-260EC: approx. 1.7 kg

G3PX

G3PX

5

Engineering Data

The

following data is for an ambient temperature of 25

°C.

Output Characteristics

G3PX-EUN/EH/EHN

Models

Output voltage (%)

Input current (mA)

G3PX-EC

Duty Setting

G3PX-EUN/EH/EHN

Models

Output voltage (%)

Input current (mA)

100%

60%

40%

20%

Output voltage (%)

Input current (mA)

Base-up Characteristics

G3PX-2j0EUN

Models

Output voltage (%)

Input current (mA)

Load current (A)

Load Current vs. Ambient Temperature

G3PX-220Ej

Models

Ambient temperature (

°C)

G3PX-240Ej

Models

G3PX-260Ej

Models

Ambient temperature (

°C)

Ambient temperature (

°C)

Load current (A)

Load current (A)

G3PX

G3PX

6

Inrush current (A.Peak)

Inrush current (A.Peak)

Inrush current (A.Peak)

Withstand Inrush Current

G3PX-220Ej

Models

Energizing time (ms)

G3PX-240Ej

Models

G3PX-260Ej

Models

Energizing time (ms) Energizing time (ms)

Note: The

above are possible on condition that the G3PX is in non-repetitive operation. If the G3PX is in repetitive operation, reduce the

applied

current to half.

G3PX

G3PX

7

Nomenclature

Single-function Model
(EUN-series Model)

G3PX-2j0EUN

POWER

indicator
BASE-UP adjuster
DUTY adjuster

(for internal slope
setting)

TIME adjuster
(for Extended
soft-start time)

Power Device
Cartridge

Level indicator

Single Heater Burnout Detection
(EH-series Model)

G3PX-2j0EH-CTjj

Level

indicator

POWER indicator

SHOR

T indicator
(for short-mode
failure detection)

CT Unit

OPEN indicator
(for single heater
burnout detection)

DUTY adjuster
(for internal slope
setting)

TIME adjuster
(for soft-start
time)

Reset
switch

Power
Device
Cartridge

Multiple Heater Burnout Detection
(EHN-series Model)

G3PX-2j0EHN-CTjj

Power Device
Cartridge

POWER indicator

Level indicator

SHOR

T indicator
(for short-mode
failure detection)

CT Unit
OPEN indicator
(for multiple heater
burnout detection)

DUTY adjuster
(for internal slope
setting)

TIME adjuster
(for extended soft-start
time)

RUN/SET switch for setting condition
for multiple heater burnout detection.

RESET switch

ALARM adjuster
(for multiple heater
burnout detection)

Constant-current Model
(EC-series Model)

G3PX-2j0EC-CTjj

POWER

indicator

CT Unit

CURRENT limit adjuster
(for limiting current)

TIME adjuster (for
extended soft-start
time)

Level indicator

RESET
switch

Power
Device
Cartridge

SHOR

T indicator
(for short-mode
failure detection)

OPEN indicator (for single
heater burnout detection)

DUTY adjuster
(for internal slope
setting)

G3PX

G3PX

8

Operation

Error Detecting Function

Wiring

Single-phase

Models

All

G3PX-2j0EH/EHN/EC-series models incorporate terminals 11

and

12 for the CT Unit, 13 and 14 for the external reset switch, and

16

and 17 for relay output as well as power/input terminals 1 through

10.

Note: 1. Connect

either the black or white lead wire of the CT

Unit

to

terminal 1

1 and the other lead wire to terminal

12.

The G3PX will malfunction

if you do not connect

the CT Unit to the G3PX.

2. The

rated current and voltage of

G3PX models when

reset

are as follows:
EH-series models: 12 mA at 12 VDC
EHN- and EC-series models: 1 mA at 12 VDC

3.

For more than one heater

.

11

12

13

14

15

16

17

Load

1

Load 2

G3PX-2j0EH

Load

CT Unit

External reset
switch

CT Unit
G32X-CTjj

Relay output

(SPDT)

(see note 1)

(see note 2)

(see note 3)

Load

Output

Single-phase

Models

The

following illustrations show the condition of the G3PX LED indi

­cators when the G3PX detects heater burnout, a short-mode failure
(ON failure of components), or overcurrent (EC-series con­stant-current models only). The indicator and relay output signals
are

reset with the internal or external reset switch provided that the

error

condition has been remedied.

1. When EH/EHN/EC-series models detect single or multiple
heater

burnout, the OPEN indicator is lit and the SPDT relay

output is ON.

Note: When

the G3PX detects heater burnout, the Level indicator

will

be OFF regardless of the G3PX input condition. The red
OPEN indicator will be lit. EHN-series models, however,
will

continue operating with level indication.

2. When EH/EHN/EC-series models detect a short-mode
failure,

the SHOR

T indicator is lit and the SPDT relay output

is

ON.

With

continuous load current.

With load current shut of

f.

Note:

When the

G3PX detects a short-mode failure, all LEDs of

the

Level indicator and red SHOR

T indicator are lit. When

you

use a breaker to disconnect the load with

the relay out

-

put,

all LEDs of the Level indicator will be OFF regardless

of

the

input to the G3PX.

3. When EC-series models detect an overcurrent, the Level
indicator

will flash and the SPDT relay output is

ON. The input

signal

will be shut of

f.

Note: When

resetting, leave power supply terminals 10 to 9 or 8

ON.

G3PX

G3PX

9

Wiring

Main Circuit

Single-phase

Models

The following illustrations show connection examples:

Note: Use

a single power supply for

the G3PX and the load.

Load

1

Load 2

G3PX

Load

1
2
3
4
5
6
7
8
9

10

200/230 VAC
100/110 VAC

Setting Circuit

Analog Control
Single-phase Models

1.

A T

emperature Controller with 4- to 20-mA output is used to control the G3PX.

1
2
3
4
5
6
7
8
9

10

Load

1

Load 2

G3PX

4 to 20 mA

4 to 20 mA

(250 Ω*)

4
5

G3PX

4
5

(250 Ω*)

G3PX

(600 Ω*)

+

–

Temperature
Controller

+
–

E5jX Tem­perature
Controller

Note: Two

G3PX models can be connected in series to OMRON’

s single T

empera-

ture

Controller (with an internal impedance

of 600 Ω) with a current output.

*Impedance

2. A Temperature Controller with an output of 7 to 20 mA is used with the G3PX to change the duty

.

+
–

Load

1

Load 2

G3PX

4 to 20 mA

DUTY

1
2
3
4
5
6
7
8
9

10

3
2
1

E5jX Tem­perature
Controller

G32X-V3K External Variable
Resistor (3 kΩ) for duty setting

Note: You

can change the duty with the external or internal ramp adjuster

.

Internal DUTY
adjuster

G3PX

G3PX

10

ON/OFF Control
Single-phase Models

1.

A T

emperature Controller is used to change the duty of G3PZ.

1
2
3
4
5
6
7
8
9

10

3
2
1

Load

1

Load 2

G3PX

5/12/24 VDC

ON/OFF

DUTY

+
–

E5jS Tem­perature
Controller

Internal DUTY
adjuster

G32X-V3K External
DUTY Adjuster (3 kΩ)

Note: You

can change the duty with the external or internal variable resistor

.

2.

A T

emperature Controller (with a voltage output) is used to control several G3PXs.

T

emperature Controller specifications

No. of G3PX

E5j

X: 40 mA at 12 V

20 sets

E5j

S: 20 mA at 12 V

20 sets

20 mA at 5 V

20 sets

10 mA at 5 V

20 sets

Connection Example

–+

3
5

G3PX

Temperature
controller

3
5

G3PX

3
5

G3PX

3.

A T

emperature Controller (with a relay output) is used to vary the duty of G3PX.

3
2
1

Load

1

Load 2

G3PX

1
2
3
4
5
6
7
8
9

10

DUTY

Temperature
controller

Internal DUTY
adjuster

G32X-V3K External
DUTY Adjuster (3 kΩ)

G3PX

G3PX

11

Manual Control
Single-phase Models

3
2
1

Load

1

Load 2

G3PX

DUTY

1
2
3
4
5
6
7
8
9

10

3
2
1

Internal DUTY
adjuster

G32X-V3K External DUTY
Adjuster (3 kΩ

) for duty set

-

ting

G32X-V3K or G32X-V2K
External DUTY Adjuster

Note: Delicate

duty adjustment is possi

-

ble

with

the external or internal re

­sistor.
Use a right DUTY adjuster (2- or
3-kΩ

type) according to the

G3PX

model

as follows:
G32K-V3K (3 kΩ) for EH-series
models
G32X-V2K

(2 kΩ) for EUN-, EHN-,

and EC-series models

Two-position Control
Single-phase Models

Load

1

Load 2

G3PX

1
2
3
4
5
6
7
8
9

10

H (High)

L (Low)

RY

G32X-V3K or G32X-V2K
External DUTY Adjuster

Note: 1. A

temperature controller with relay output or a single relay can be used with the G3PX
in two-position (high-and low-position) control, in which case the relay contact current
is

30 mA at 12 VDC with the External DUTY Adjuster set to 0

Ω.

2. Use

a right DUTY adjuster (2- or 3-kΩ type) according to the G3PX model as follows:
G32X-V3K (3 kΩ) for EH-series models
G32X-V21K (2 kΩ) for EUN-, EHN-, and EC-series models.

Setting of Base-up Output (G3PX-2j0EUN Series)

The

base-up output can be adjusted with the base-up adjuster knob. It is also possible to control the base-up output for the

full scale of 4 to

20-mA

input current by adjusting the duty adjuster. Refer to

Engineering Data

on page

67 for the base-up characteristics.

G3PX-2j0EHN Series (Multiple Heater Burnout Detection Model)

Setting

1. Use the G32X-CTjjHN CT Unit and make sure that the
G3PX is wired correctly.

2.

The G3PX initially set is shown in the following illustration.
Make sure that the RUN/SET switch has been set to SET

.

Make

sure that the DUTY adjuster has

been turned clockwise

to

the maximum.

3.

Adjust the sensitivity

.
Turn the ALARM adjuster and set to the position where the
OPEN indicator is lit. Stop turning the ALARM adjuster as
soon

as the indicator is lit to complete the setting.

G3PX

G3PX

12

4. Set the RUN/SET switch to RUN.
When

all settings have been finished, the OPEN indicator is

OFF.

Note: 1. The

G3PX can control any part of the phase

as long as

the controlled phase is approximately 1/6π or more in
width.

2. Be

sure to prepare terminals 18 and 19 corresponding

to
the supply frequency of 50 Hz or 60 Hz. Otherwise, a
setting

error will result in a malfunction regardless of the

RUN/SET

switch setting.

When

the error has occurred, turn the ALARM adjuster
counterclockwise to the minimum setting, reset the
G3PX,

and readjust.

G3PX

G3PX

13

Replacement Parts

G32X-A Power Device Cartridge

The

temperature indicator will be lit in red if the power element is damaged. If the power element is damaged due to overcurrent or other rea

-

sons,

the power element and its peripheral parts can be replaced.
The power element and its peripheral parts can be replaced without disconnecting the wires of the G3PX.
Improve the heat radiation of the G3PX before replacing the Cartridge.
The temperature indicator will not be lit in red if the G3PX has overcurrent due to load short-circuiting or other reasons over a short time.

Appearance

G32X-A20 G32X-A40 G32X-A60

Replacement of G32X-A20 Power Device Cartridge

Use

the special tool (provided) to extract the

Cartridge for replace

-

ment

with a new one.

Extraction

Follow the procedures below to dismount the Power Device Car­tridge

from the G3PX.

1.

Switch of

f the power

.

2.

Remove the terminal cover

.

3. Hook the tool on the indented portions of the Power Device
Cartridge as shown in the illustration below and pull up the
Power Device Cartridge vertically.

Special tool

Indented
portions

T

erminal cover

Mounting

The

procedures for mounting the Power Device Cartridge are as

fol

-

lows:

1. Apply

silicone grease (provided with the G32X-A) to the entire

surface

of the heat radiator

.

2. Make sure there is no dust or pieces of wire on the heat
radiators

of the G32X-A or the G3PX.

3. Insert

the Cartridge into the opening of the G3PX so that

the
letters on the Cartridge and those on the G3PX are in the
same

direction and sides A and B are even.

A

B

4.

Attach the terminal cover

.

5. Switch

on the power and check the G3PX to be sure it works

properly.

G32X-A40/60

The

G32X-A40 and G32X-A60 are secured with screws.

Extraction

The

procedures for dismounting the Power Device Cartridge are as

follows:

1. Switch

of

f the G3PX.

2.

Remove the terminal cover

.

3. Be

sure to turn of

f the G3PX and

loosen the screws located in
the upper center and lower center. These screws are
connected

to terminals 1 and 2.

Loosen

Loosen

G3PX

G3PX

14

4.

Loosen the screws on both corners.

Loosen

Loosen

5. Hold the indented part of both corners to dismount the
Cartridge.

Mounting

1. Apply

silicone grease (provided with the G32X-A) to the entire

surface

of the heat radiator

.

2. Make sure there is no dust or pieces of wire on the heat
radiators

of the G32X-A or the G3PX.

3. Insert

the Cartridge into the opening of the G3PX so that

the
letters on the Cartridge and those on the G3PX are in the
same

direction and sides A and B are even.

A

B

4. Tighten

the screws on both corners

with a tightening torque of

0.59

to 0.78 N S m.

5. Tighten the center screws of the G3PX with a tightening
torque

of 0.59 to 0.78 N S m.

6.

Attach the terminal cover

.

7. Switch

on the power and check the G3PX to be sure it works

properly.

External Variable Resistor

The

G32X-V3K and G32X-V2K are provided with a set consisting of

adjuster,

knob, and nameplate.

Resistive value

(see note 1)

Model

3 kΩ

G32X-V3K (see note 2)

2 kΩ G32X-V2K

Note: 1. The G32X-V3K is equivalent to the conventional

G32X-VR.

2. Resistive

V

alue

The resistance is
read on the back of
the variable resistor.

External DUTY Adjuster Knob

Mounting Holes

Nameplate

2.5±1

31±1 dia.

15 min.

17 max.

10±1

20±1

1.6±0.2

R26 max.

1±0.1

M9P0.75

2.8±0.2 dia.

12±0.2

30 max.

6 dia.

0
–0.1

Filled with
white resin

17

14

6.5

1.6

13.4

26

34

3 dia. hole

12±0.2

9.5 dia. hole

G32X-VR

100

%

48

48

G3PX

G3PX

15

Dimensions

Note: All

units are in millimeters unless otherwise indicated.

Single-phase Models

G3PX-220Ej

Series

G3PX-240Ej

Series

Mounting

Holes

Four, 4.5 dia.
or M4 holes

140±0.3

65±0.3

119

108

120

109.8

8.6

8.6

Two, M4 screws

Two, 4.6 dia.
holes

140±0.2

50±0.2

70 max.

130 max.

Two, R2.3
holes

130

150 max.

119

108

120

13

13

109.8

130 max.

140±0.2

65±0.2

85 max.

Two, R2.3
holes

Two, M5 screws

Two, 4.6 dia.
holes

150 max.

130

Four, 4.5 dia.
or M4 holes

140±0.3

50±0.3

Mounting

Holes

7.6

7.6

G3PX

G3PX

16

G3PX-260Ej

Series

Mounting

Holes

140±0.3

80±0.3

Four 4.5-dia. or
M4 holes

114

108

120

17

17

Two, 4.6 dia.
holes

Two,
R2.3
holes

130 max.

150 max.

140±0.2

Two, M6 screws

130

109.8

80±0.2

100 max.

7.6

G32X-CT03j

Series

G32X-CT10j

Series

Mounting

Holes

Note: 1.

Color of the hole
EH Series: Black
EHN Series: White
EC Series:

Light gray

The size of the hole of CT Units for EC- and EHN-series models is 15 dia.

2. The

G32X-CT03j incorporates 30-cm solderless terminals and the G32X-CT10

j

incorporates

100-cm solderless terminals.

50±0.2

Two 4.5-dia. or M4 holes

50

30

9.5

24

35

14

55

40

17 dia. hole
(15 dia., see
note 1)

60 max.

(see note 2)

17

G3PX

G3PX

17

Installation

Terminal Arrangement

Single-phase

Models

G3PX-220EUN
G3PX-240EUN
G3PX-260EUN

G3PX-220EH
G3PX-240EH
G3PX-260EH

1

Voltage ON/OFF input
VOLTAGE IN

2

3

4

5

6

7

8

9

10

External main setting
3 kΩB 2 W
MAN SET

(1 to 5 VDC)
(Voltage)

5 to 24 VDC
INPUT

External duty setting
3 kΩB
MAN DUTY SET

200/230 VAC
50/60 Hz

100/110 VAC
50/60 Hz

SOURCE

Current input
4 to 20 mA DC CURRENT

1

2

3

4

5

6

7

8

9

10

Voltage ON/OFF input
VOLTAGE IN

External main setting
3 kΩB 2 W
MAN SET

(1 to 5 VDC)
(VOLTAGE)

5 to 24 VDC
INPUT

External duty setting 3 kΩB
MAN DUTY SET

200/230 VAC
50/60 Hz

100/110 VAC
50/60 Hz

SOURCE

Current input
4 to 20 mA DC CURRENT

11

12

13

14

15

16

17

RESET

CT UNIT
G32X-CT

W

B

ALARM

Internal contact
configuration

2 kΩ

B, 2 W for

EUN-series models

G3PX-220EHN/220EC
G3PX-240EHN/240EC
G3PX-260EHN/260EC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Voltage ON/OFF input
VOLTAGE IN

External main setting
2 kΩB 2 W
MAN SET

(1 to 5 VDC)
(VOLTAGE)

5 to 24 VDC
INPUT

External duty setting
3 kΩB
MAN DUTY SET

200/230 VAC
50/60 Hz

100/110 VAC
50/60 Hz

SOURCE

Current input
4 to 20 mA DC CURRENT

RESET

CT UNIT
G32X-CT

W

B

ALARM

Internal
contact
configuration

18

19

OPEN 50 Hz
SHORT 60 Hz
(see note)

Note: Open

the terminals for 50 Hz or short-circuit the terminals for 60 Hz. When the product is shipped, the terminals are short-circuited

using a short-circuiting bar to set to 60 Hz. When using at 50 Hz, remove the short-circuiting bar

.

G3PX

G3PX

18

Precautions

Correct Use

Load

Only resistive loads can be connected to the G3PX. Contact your
OMRON representatives if it is necessary to connect inductive or
transformer

loads.

Mounting

The three-phase, 60-A G3PX weighs approximately 5 kg. Pay ut­most

attention when mounting the G3PX so that the

G3PX will not

fall

thus resulting in injury

.

V

ertical Mounting

Note: In

the

case of flat mounting, the 30% derating of the

load

current is required.

Flat Mounting

Note: Make sure that there is a space of at least 50 mm

vertically

and at

least 10 mm horizontally between

adjacent

single-phase models.

10 mm10 mm

50 mm

10 mm 10 mm

Close Mounting Example (Single-phase Models)

Wiring

Make

sure that the lead wires are thick

enough according to the cur

-

rent.
Be

sure to turn of

f power to the G3PX when wiring. The G3PX has

current

leakage although the G3PX is turned of

f if the power

supply

is

connected to the G3PX, which may give an electric shock.

Do

not wire power lines or high-tension lines along with the lines of
the G3PX in the same conduit, otherwise the G3PX may be dam­aged

or malfunction due to induction. Be sure to wire the lines of the

G3PX

separated from power lines or high-tension lines or laid in an

exclusive,

shielded conduit.

Tightening Torque

Apply

the following tightening torque.

Output terminal:

20-A model: 1.47 N S m
40-A model: 2.45 N S m
60-A model: 4.12 N S m

T

erminal block:

Single-phase model: 0.98 N S m

Be

sure to protect the terminals with the protective cover after wir

-

ing.

Wiring for Error Detection

If

a contactor is employed and operated with the relay output signal

of

the G3PX for error detection, make sure that the G3PX is closer to

the

power supply than the contactor

.

Instruments

Instrument Remarks

Thermal type

Available

Digital type displaying
root-mean-square values

Moving-iron type
Rectifier type

Not available (not

Multimeter

oaaabe(o

precise enough)

Digital multimeter

The

instruments are used for displaying room-mean-square voltage

and current values of the AC circuitry.

Operation Monitoring

The

level indicator just indicates the phase of the load and it is not

highly precise.

Ramp Setting

There

is a decrease in ramp if the internal DUTY adjuster is turned

counterclockwise.

100% 10%

DUTY DUTY

If the External DUTY Adjuster is used, set the Internal DUTY
Adjuster

to 100%.

CT Unit

The

CT Unit varies with the G3PX-series model. Use the following

CT

Units in combination with the G3PX models.
G3PX-2j0EH Series: G32X-CTjj

G3PX-2j0EHN Series: G32X-CTjjHN
G3PX-2j0EC Series: G32X-CTjjC

G3PX

G3PX

19

If

any of the following models is used and the actual load current is

50%

of the maximum rated load current or lower

, increase the num

-

ber

of turns of the wire around the CT Unit.
G3PX-20EHN Series (multi-heater burnout detective models)
G3PX-20EC Series (constant current)

For

example, make two turns if the actual load current is 50% of the

maximum

rated load current and four turns if the actual load current

is

25% of the maximum rated load current.

If

the G3PX is a constant current model, do not increase the number
of turns of the wire around the CT Unit excessively, otherwise the
overcurrent

detective function may operate by mistake.

External DUTY Adjuster

Use the External DUTY Adjuster with a resistance of 2 kΩ or that
with a resistance of 3 kΩ according to the G3PX-series model in
use.

Refer to the following combinations.
G3PX-2jEH Series: G32X-V3K (3 kΩ)
G3PX-2j0EUN Series
G3PX-2j0EC Series

Base-up Function

If

the model in use has the model

number suf

fix “EUN,” the base-up

function

is available.

The

base-up output of the G3PX with a temperature controller out

-

put

of 0 mA (i.e., the temperature controller is

turned of

f) and that of

the

G3PX with a temperature controller output of 4

mA are dif

ferent

from

each other

.

Power Device Cartridge

Do not apply power to the G3PX with the Power Device Cartridge
dismounted.

Heater Burnout Detection

EH

and EHN Models

The

heater burnout

detective function is not available for detecting

the

phase less than the following.

G3PX-20EH Series: π/8 or less
G3PX-20EHN Series: Approx. π/6 or less

Phase not detectable

Power Supply

Single-phase

Models Only

Do not apply 200 V to the 100-V terminals, otherwise the thermal
fuse

of the built-in transformer will be blown

and the G3PX will not

operate.

Others

It

is not possible to use

three single-phase models for three-phase

load

control.
If

three-phase power supply is used for single-phase models oper

-

ating in parallel, make sure that the two

phases supplied to all the

single-phase models are the same.

Troubleshooting

Check

the following if the G3PX does not operate or has dif

ficulty in

temperature

control.

•

The load does not turn on with 100% input.

Check the default internal ramp setting.

DUTY

Make sure that the adjust­er is set to the farthest
clockwise position.

Also check

the current limit adjuster if the G3PX is a constant DC

model.

CUR LIM

• The

G3PX does not operate or is in abnormal operation.

Make

sure that all input terminals are connected properly with no

mistakes

in polarity

.

Make

sure that the internal DUTY adjuster is not set to the farthest

clockwise

position.

Make

sure that the frequency used by the G3PX (i.e., 50 or 60 Hz)

is

set properly

. (This applies to the EC, and EHN models.)

•

The G3PX malfunctions if the external adjusters are turned.

Make sure that the numbers on the external adjusters coincide
with

the corresponding terminal numbers on the G3PX.

Make

sure that the 2-kΩ and 3-kΩ DUTY

adjusters are connected

correctly.

External main setting External duty setting

(Positive)

Note: 1, 2, 3, 5, 6, and 7 are terminal

numbers

of the G3PX.

(Positive)

• Temperature control with a Voltage-output Temperature

Controller

is not smooth.

Make sure that the controlled soft-start up/down time has been
adjusted

properly

. If not, turn the

TIME adjuster counterclockwise
to the minimum setting to reduce the controlled start-up/down
time.

TIME

TIME

Input signal

Controlled
soft-start
up

Reduce this period.

Input signal

Controlled
soft-start
up

• The Level indicator is not OFF with a 0% input signal

(G3PX-2j0EUN

Series).

Make

sure that the BASE UP adjuster has been turned counter

-

clockwise

to the minimum setting.

BASE UP

Make sure that the adjuster
is turned counterclockwise
to the minimum setting.

G3PX

G3PX

20

•

The

OPEN indicator of a multiple heater burnout detection model

is

lit at the initial stage (G3PX-2

j0EHN Series).

Make sure that the initial settings are OK. If not, readjust the
G3PX.
Make sure that terminals 18 and 19 are open if the supply fre­quency is 50 Hz. These terminals must be short-circuited if the
supply frequency is 60 Hz.

Make sure that the load current is large enough.

•

The Level indicator LEDs of a constant-current model are all lit

and no power control operation is possible.
Make sure that the load current is large enough.
Countermeasure

1: Adjust the CUR LIM adjuster so that the LED

on

the farthest right of the Level indicator is OFF

.

Adjust so that this LED is OFF.

CUR LIM adjuster for limiting current

Countermeasure

2: When the supply current is less than 50%, in

­crease the number of turns. When the supply current is 50% of
the

rated current, the wires must be coiled twice on the CT

Unit.

When the supply current is 25% of the rated current, the wires
must

be coiled three to four times on the CT Unit.

• No

reset will be performed even if the RESET button is

pressed.
Check whether the RESET button is pressed while there is
nothing

input into to power supply terminals 8 and 10 or 9 and 10

of

the G3PX.

Be sure to press the RESET button with power supplied to the
G3PX.

The following wiring will be required if the breaker or contactor
connected

between the power supply and the G3PX is operated

by

the relay output of the G3PX.

Magnet
contactor

Load

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To

convert millimeters into inches, multiply by 0.03937. T

o convert grams into ounces, multiply by 0.03527.

Cat. No. K076-E1-2A