Power Controllers
G3PX
• Refer to Warranty and Application Considerations (page 1), Safety
Precautions (page 4), and Technical and Safety Information (page 6).
• Refer to Heater Control Types and G3PX Control Methods (page 23).
■Single-phase Models
EUN Series
AC Power Controllers with Phase-control
System Allow Precise Temperature Control
Models with Base-up and Soft-start
Functions
EH Series
Phase Control System Makes It Possible to
Detect Single Heater Open Circuit (EH
Series) and Multiple Heater Open Circuits
(EHN Series)
EC Series
Optimum Devices for Controlling Input
Power for Pure Metal Heater, and
Incorporating Overcurrent Detecting and
Single Heater Open Circuit Detecting
Functions
• OMR ON’s un ique design and ca refully-selected material s 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.
• Certified by UL and CSA.
Model Number Structure
■Model Number Legend
G3PX-@@@@-@
1
2 3 4 5 6
1. Basic Model Name
G3PX: Power Controller
2. Rated Load Power Supply Voltage
2: 100/110 VAC and 200/230 VAC
3. Rated Load Current
20: 20 A
40: 40 A
60: 60 A
4. Number of Phases
E: Single
5. Functions
UN: Simple models
H: Single heater open circuit detection function
HN: Multiple heater open circuit detection function
C: Constant-current function
6. CT Unit Type
Note: Refer to CT Unit on page 70.
Power Controllers G3PX 67
G3PX Cartridge
G32X-@@
12
1. Basic Model Type
G32X: Accessory for G3PX
2. Basic Model Name
A: Power Device Cartridge
3. Rated Load Current
20: 20 A
40: 40 A
60: 60 A
3
CT Unit
G32X-@@@
3
2
1
1. Basic Model Type
G32X: Accessory for G3PX
2. Basic Model Name
CT: CT Unit
3. Length of Lead Wires
03: 30 cm
10: 100 cm
4. Series
Blank: Series for single heater open circuit detection
HN: Series for multiple heater open circuit detection
C: Series for constant current
4
Variable Resistor
G32X-@
1
2
1. Basic Model Type
G32X: Accessory for G3PX
2. Basic Model Name
V3K: 3-k
V2K: 2-k
Ω Variable Resistor
Ω Variable Resistor
68 Po wer Controllers G3PX
Ordering Information
■List of Models
EUN Series
Phase Applicable load Level indicator Base-up function
Single Resistive load
Heater
Note: 1. The base-up output with a 0-mA temperature controller output (i.e. the temperature controller is OFF) differs from that with a 4-mA
temperature controller output. Refer the Characteristics data on page 73.
2. When ordering, make sure that the rated voltage is 200/230 VAC. For a rated voltage of 200/220 VAC, the G3PX is available.
Yes Yes Approx. 0.5 to 10 s 20 A 100/110 VAC
(See note 1.)
Soft-start time Carry
current
40 A G3PX-240EUN
60 A G3PX-260EUN
Rated voltage Model
G3PX-220EUN
200/230 VAC
(See note 2.)
EH Series
Phase Applicable load Level indicator Single heater
Single Resistive load
Heater
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-2@0EH-CT03: CT with 30-cm-long lead wires
G3PX-2@0EH-CT10: CT with 100-cm-long lead wires
2. Adjusts the multiple heater open circuit detection sensitivity of EHN-series models. Enables single heater open circuit detection in control
of a maximum of five heaters.
3. When ordering, make sure that the rated voltage is 200/230 VAC. For a rated voltage of 200/220 VAC, the G3PX is available.
Yes Yes No 20 A 100/110 VAC
open circuit
detection
Yes (See note 2.) Yes 20 A G3PX-220EHN-CT03
Multiple heater
open circuit
detection
Carry
current
40 A G3PX-240EH-CT03
60 A G3PX-260EH-CT03
40 A G3PX-240EHN-CT03
60 A G3PX-260EHN-CT03
Rated voltage Model
200/230 VAC
(See note 3.)
(See note 1.)
G3PX-220EH-CT03
G3PX-220EH-CT10
G3PX-240EH-CT10
G3PX-260EH-CT10
G3PX-220EHN-CT10
G3PX-240EHN-CT10
G3PX-260EHN-CT10
EC Series
Phase Applicable
load
Single Resistive load
Heater
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-2@0EC-CT03: CT with 30-cm-long lead wires
G3PX-2@0EC-CT10: CT with 100-cm-long lead wires
2. When ordering, make sure that the rated voltage is 200/230 VAC. For a rated voltage of 200/220 VAC, the G3PX is available.
Level indicator Constant-current
function
Yes Yes Yes 20 A 100/ 110 VAC
Single heater
open circuit
detection
Carry
current
40 A G3PX-240EC-CT03
60 A G3PX-260EC-CT03
Rated voltage Model
200/230 VAC
(See note 2.)
Power Controllers G3PX 69
(See note 1.)
G3PX-220EC-CT03
G3PX-220EC-CT10
G3PX-240EC-CT10
G3PX-260EC-CT10
■Accessories (Order Separately)
CT Unit
Name Length of lead wires Solderless terminals Applicable models Model
CT Unit 30 cm Yes G3PX-2@@EH G32X-CT03
100 cm G32X-CT10
30 cm G3PX-2@@EHN G32X-CT03HN
100 cm G32X-CT10HN
30 cm G3PX-2@@EC G32X-CT03C
100 cm G32X-CT10C
Power Device Cartridge
Name Carry current Applicable models Model
Power Device Cartridge 20 A G3PX-220E@@ G32X-A20
40 A G3PX-240E@@ G32X-A40
60 A G3PX-260E@@ G32X-A60
Note: The G32X-A is a dedicated Power Device Cartridge for the G3PX.
Refer to Replacement Parts on page 81.
Specifications
■R atings (at an Ambient Temperature of 25°C)
Control
Item G3PX-
Rated voltage 100/110, 200/230 VAC
Frequency 50/60 Hz (See note 1.)
Input
signal for
control
Relay output for alarm --- SPDT: 8 A at 250 VAC/30 VDC
Note: 1. 50/60 Hz (no selector required) (EUN Series)
External main
setting
(See note 2.)
Current input 4 to 20 mA (at 1 to 5 VDC) (Input impedance: 250
Voltage ON/
OFF input
External duty
setting
Terminals 18 and 19 of EHN/EC-series models must be open when the supply frequency is 50 Hz. These terminals must be shortcircuited when the supply frequency is 60 Hz.
2. Use the G32X-V2K 2-k
3. Input 4 to 20 mA or 1 to 5 VDC linear input to the 4 to 20 mA current input terminal.
2 k
5 to 24 VDC (Input impedance: approx. 20 k
3 k
220EUN/
240EUN/
260EUN
Ω (type B, 2 W min.) 3 kΩ (type B, 2 W min.) 2 kΩ (type B, 2 W min.)
Ω (type B)
Ω Variable Resistor for external main setting on EUN, EC, and EHN (G32X-V3K 3-kΩ for EN-series models) .
Output
Model Applicable lo a d
Rated load voltage Load current Inrush current Number of phases
G3PX-220E@
G3PX-220E@N
G3PX-240E@
G3PX-240E@N
G3PX-260E@
G3PX-260E@N
100/110, 200/230 VAC (50/
60 Hz)
1 to 20 A (See note.) 220 A (60 Hz, 1 cycle) Single
1 to 40 A (See note.) 440 A (60 Hz, 1 cycle)
1 to 60 A (See note.) 440 A (60 Hz, 1 cycle)
G3PX220EH/
240EH/
260EH
Ω) (See note 3.)
Ω)
G3PX220EHN/
240EHN/
260EHN
G3PX220EC/
240EC/
260EC
70 Po wer Controllers G3PX
Note: The G3PX-2@@EHN (model with multiple heater open circuit detecting function) and G3PX-2@@EC (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 shor t mode failure will be detected if the current has risen to 20% of the rated value.
■Characteristics
EU/EH Series
Item G3PX-220EUN/
Operating voltage range
Operating frequency
range
Output voltage adjustable
range
Internal duty setting
range
External duty setting
range
Start-up time
(See note 2.)
Base-up range 0% to 90% ---
Multiple heater open cir-
cuit detection
Min. phase detection --- Approx. 1/6
Min. phase setting --- --- Approx. 1/6 π
Min. load current for ON
error detecting
Abnormality detection
time
Voltage drop with output ON1.6 V max. (RMS)
Leakage current 10 mA max. at 100/110 VAC, 20 mA max. at 200/230 VAC
Insulation resistance 100 M
Dielectric strength 2,000 VAC, 50/60 Hz for 1 min.
Vibration resistance
Shock resistance
Ambient temperature Operating: –25°C to 65°C (with no icing or condensation)
Ambient humidity Operating: 45% to 85%
Weight G3PX-220EUN: approx. 1.1 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.
±10%
±1 Hz
0% to 95%
0% to 100% 10% to 100% (See note 1.) 0% to 100%
0% to 100% 10% to 100% (See note 1.) 0% to 100%
Approx. 0.5 to 10 s
(See note 3.)
--- 20% max. (See note 4.)
--- 1 A 30% max. of rated current
--- 0.1 s max. 1 s max.
Malfunction: 10 to 55 to 10 Hz, 100 m/s
Malfunction: 300 m/s
Storage: –10
G3PX-240EUN: approx. 1.4 kg
G3PX-260EUN: approx. 1.7 kg
240EUN/260EUN
Ω min. (at 500 VDC)
2
°C to 55°C (with no icing or condensation)
G3PX-220EH/240EH/260EH G3PX-220EHN/
Approx. 0.1 to 1 s
(See note 3.)
π
2
G3PX-220EH: approx. 1.1 kg
G3PX-240EH: approx. 1.4 kg
G3PX-260EH: approx. 1.7 kg
Approx. 0.5 to 10 s
(See note 3.)
(See note 5.)
G3PX-220EHN: approx. 1.2 kg
G3PX-240EHN: approx. 1.5 kg
G3PX-260EHN: approx. 1.8 kg
240EHN/260EHN
Power Controllers G3PX 71
EC Series
Item G3PX-220EC G3PX-240EC G3PX-260EC
Operating voltage range
Operating frequency range
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
Current limit range 0% to 100%
Excess current detection Peak current of 110 A within
Constant current
Abnormality detection time 1 s max.
Voltage drop with output ON 1.6 V max. (RMS)
Leakage current 10 mA max. at 100/110 VAC, 20 mA max. at 200/230 VAC
Insulation resistance 100 M
Dielectric strength 2,000 VAC, 50/60 Hz for 1 min.
Vibration resistance
Shock resistance
Ambient temperature Operating: –25°C to 65°C (with no icing or condensation)
Ambient humidity Operating: 45% to 85%
Weight G3PX-220EC: approx. 1.1 kg
±10%
±1 Hz
20% max. of rated current
1cycle
±3% max. with 10-time increment of load value
±3% max. with ±10% change of voltage
Ω min. (at 500 VDC)
Malfunction: 10 to 55 to 10 Hz, 100 m/s
Malfunction: 300 m/s
Storage: –10
G3PX-240EC: approx. 1.4 kg
G3PX-260EC: approx. 1.7 kg
2
°C to 55°C (with no icing or condensation)
Peak current of 220 A within
1cycle
2
Peak current of 330 A within
1 cycle
72 Po wer Controllers G3PX
Engineering Data
)
)
)
)
The following data is for an ambient temperature of 25°C.
Output Characteristics Duty Setting
G3PX-EUN/EH/EHN Models
Output voltage (%)
Input current (mA
Base-up Characteristics
G3PX-2@0EUN Models
G3PX-EC Models G3PX-EUN/EH/EHN Models
Output voltage (%)
Input current (mA
Output voltage (%)
Input current (mA
100%
100%
60%
60%
40%
40%
20%
20%
Output voltage (%)
Input current (mA
Load Current vs. Ambient Temperature
G3PX-220E@ Models
Load current (A)
Ambient temperature (°C)
G3PX-240E@ Models G3PX-260E@ Models
Load current (A)
Ambient temperature (°C) Ambient temperature (°C)
Load current (A)
Power Controllers G3PX 73
One Cycle Surge Current: Non-repetitive
G3PX-220E@ Models
Inrush current (A.Peak)
Energized 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-240E@ Models G3PX-260E@ Models
Inrush current (A.Peak)
Energized time (ms) Energized time (ms)
Inrush current (A.Peak)
74 Po wer Controllers G3PX
Nomenclature
Single-function Model
(EUN-series Model)
G3PX-2@0EUN
Level indicator
POWER indicator
BASE-UP adjuster
DUTY adjuster
(for internal
slope setting)
TIME adjuster
(for Extended
soft-start time)
Power Device
Cartridge
Multiple Heater Open Circuit
Detection (EHN-series Model)
G3PX-2@0EHN-CT@@
RUN/SET switch for setting condition for
multiple heater open circuit detection.
Level indicator
POWER indicator
SHORT indicator
(for short-mode
failure detection)
CT Unit
OPEN indicator
(for multiple heater
open circuit detection)
ALARM adjuster
(for multiple heater
open circuit detection)
DUTY adjuster
(for internal slope
setting)
TIME adjuster
(for extended softstart time)
RESET switch
Power Device
Cartridge
Single Heater Open Circuit
Detection (EH-series Model)
G3PX-2@0EH-CT@@
Level indicator
POWER indicator
SHORT indicator
(for short-mode
failure detection)
CT Unit
OPEN indicator
(for single heater
open circuit
detection)
DUTY adjuster
(for internal
slope setting)
TIME adjuster
(for soft-start
time)
Constant-current Model
(EC-series Model)
G3PX-2@0EC-CT@@
POWER indicator
SHORT indicator
(for short-mode
failure detection)
OPEN indicator (for single
heater open circuit
detection)
Reset
switch
Power
Device
Cartridge
CURRENT limit adjuster
(for limiting current)
CT Unit
DUTY adjuster
(for internal slope
setting)
TIME adjuster
(for extended
soft-start time)
Level indicator
RESET
switch
Power
Device
Cartridge
Power Controllers G3PX 75
Operation
■E rror Detecting Function
Wiring
Single-pha se M odels
All G3PX-2@0EH/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.
CT Unit
G32X-CT@@
11
12
(see note 1)
CT Unit
Load 1
2. When EH/EHN/EC-series models detect a short-mode failure, the
SHORT indicator is lit and the SPDT relay output is ON.
With continuous load current.
Load
Load
13
14
15
16
17
G3PX-2@0EH
Load 2
External reset
switch
(see note 2)
Relay output
(SPDT)
(see note 3)
Note: 1. Connect either the black or white lead wire of the CT
Unit to terminal 11 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.
Output
Single-pha se M odels
The following illustrations show the condition of the G3PX LED
indicators when the G3PX detects heater open circuit, 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
open circuit, the OPEN indicator is lit and the SPDT relay output
is ON.
Note: When the G3PX detects heater open circuit, 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.
With load current shut off.
Note: When the G3PX detects a short-mode failure, all LEDs of the
Level indicator and red SHOR T i ndicator are lit. When you use
a breaker to disconnect the load with the relay output, 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 off.
76 Po wer Controllers G3PX
Note: When resetting, leave power supply terminals 10 to 9 or 8 ON.
■Wiring
Main Circuit
Single-phase Models
The following illustrations show connection examples:
Load 1
1
2
3
4
5
G3PX
6
200/230 VA C
100/110 VA C
Load
Note: Use a single power supply for the G3PX and the load.
Setting Circuit
Analog Control
Single-phase Models
1. A Temperature Controller with an output of 4 to 20 mA is used to control the G3PX.
2. A Temperature Controller with an output of 4 to 20 mA is used with the G3PX to change the duty.
7
8
9
10
Load 2
E5@K
Temperature
Controller
+
−
4 to 20 mA
Load 1
1
2
3
4
5
G3PX
6
7
8
9
10
Load 2
Temperature
Controller
(600 Ω*)
+
−
4 to 20 mA
Note: Two G3PX models can be connected in series to OMRON's single Temperature
Controller (with an internal impedance of 600 Ω) with a current output.
Load 1
1
2
Internal DUTY
adjuster
DUTY
E5@K
Temperature
Controller
G32X-V3K External Variable
Resistor (3 kΩ) for duty setting
+
−
3
2
1
4 to 20 mA
3
4
5
G3PX
6
7
8
9
10
Load 2
4
G3PX
5
(250
Ω*)
4
G3PX
5
(250 Ω*)
*Impedance
Note: You can change the duty with the external or internal ramp adjuster.
Power Controllers G3PX 77
ON/OFF Control
Single-phase Models
1. A Temperature Controller is used to change the duty of G3PX.
Load 1
1
5/12/24 VDC
ON/OFF
E5@N
Temperature
Controller
G32X-V3K External
DUTY Adjuster (3 kΩ)
+
−
3
2
1
Note: You can change the duty with the external or internal variable resistor.
2. A Temperature Controller (with a voltage output) is used to control several G3PXs.
Temperature Controller specifications No. of G3PX
E5@K: 40 mA at 12 V 20 sets
E5@N: 20 mA at 12 V 20 sets
20 mA at 5 V 20 sets
10 mA at 5 V 20 sets
2
3
4
5
G3PX
6
7
8
9
10
Load 2
Internal DUTY
adjuster
DUTY
Connection Example
Temperature
controller
−+
3
G3PX
5
3. A Temperature Controller (with a relay output) is used to vary the duty of G3PX.
Temperature
controller
3
G32X-V3K External
DUTY Adjuster (3 kΩ)
2
1
3
G3PX
5
1
2
3
4
5
6
7
8
9
10
Load 1
G3PX
Load 2
3
G3PX
5
Internal DUTY
adjuster
DUTY
78 Po wer Controllers G3PX
Manual Control
Single-phase Models
3
G32X-V3K or G32X-V2K
External DUTY Adjuster
G32X-V3K External DUTY
Adjuster (3 kΩ) for duty
setting
2
1
3
2
1
Two-position Control
Single-phase Models
H (High)
G32X-V3K or G32X-V2K
External DUTY Adjuster
L (Low)
RY
Load 1
1
2
3
4
5
G3PX
6
7
8
9
10
Load 2
Internal DUTY
adjuster
DUTY
Note: Delicate duty adjustment is possible with the external or
internal resistor. 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
Load 1
1
2
3
4
5
G3PX
6
7
8
9
10
Load 2
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 kW) for EH-series models
G32X-V21K (2 kW) for EUN-, EHN-, and EC-series models.
■Setting of Base-up Output (G3PX-2@0EUN 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 73 for the base-up characteristics.
■G3PX-2@0EHN Series (Multiple Heater Op en Circuit Detection Model)
Setting
1. Use the G32X-CT@@HN 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.
T urn 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.
Power Controllers G3PX 79
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 1/6
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
swit ch setting.
When the error has occurred, turn the ALARM adjuster
counterclockwise to the minimum setting, reset the G3PX,
and readjust.
π or more in width.
80 Po wer Controllers G3PX
■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 ov ercurrent or other reasons,
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
replacement with a new one.
Extraction
Follow the procedures below to dismount the Power Device
Cartridge from the G3PX.
1. Switch off 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
Mounting
The procedures for mounting the Power Device Cartridge are as
follows:
1. Apply silicone grease (provided with the G32X-A) to the entire
surface of the heat sink.
2. Make sure there is no dust or pieces of wire on the heat sinks of
the G32X-A or the G3PX.
Terminal cover
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 off the G3PX.
2. Remove the terminal cover.
3. Be sure to turn off 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
Power Controllers G3PX 81
4. Loosen the screws on both corners.
7
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.
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 sink.
2. Make sure there is no dust or pieces of wire on the heat sinks of
the G32X-A or the G3PX.
■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.)
3 k
Ω G32X-V3K (See note 2.)
2 k
Ω G32X-V2K
Model
A
B
4. Tighten the screws on both corners with a tightening torque of
0.59 to 0.78 N·m.
5. Tighten the center screws of the G3PX with a tightening torque of
0.59 to 0.78 N·m.
6. Attach the terminal cover.
7. Switch on the power and check the G3PX to be sure it works
properly.
Note: 1. The G32X-V3K is equivalent to the conventional G32X-VR.
2. Resistive Value
The resistance is
read on the back of
the variable resistor.
External DUTY Adjuster Knob
31±1 dia.
2.5±1
15 min.
17 max.
10±1
20±1
M9P0.75
0
6 dia.
−0.1
1±0.1
R26 max.
1.6±0.2
30 max.
2.8±0.2 dia.
12±0.2
12±0.2
Filled with
white resin
Mounting Holes Nameplate
3 dia. hole
12±0.2
9.5 dia. hole
%
48
G32X-VR
100
48
13.4
34
26
1
14
6.5
1.6
82 Po wer Controllers G3PX
Dimensions
Note: All units are in millimeters unless otherwise indicated.
■Single-phase Models
G3PX-220E@ Series
108
120
130 max.
140±0.2
150 max.
130
50±0.2
70 max.
119
Two, 4.6 dia.
holes
7.6
Two, R2.3
holes
Mounting Holes
140±0.3
50±0.3
8.6
Two, M4 screws
8.6
109.8
Four, 4.5 dia.
or M4 holes
G3PX-240E@ Series
108
120
130 max.
150 max.
140±0.2
130
65±0.2
65±0.2
85 max.
119
Two, 4.6 dia.
holes
7.6
Two, R2.3
holes
Mounting Holes
140±0.3
13
65±0.3
Two, M5 screws
13
109.8
Four, 4.5 dia.
or M4 holes
Power Controllers G3PX 83
G3PX-260E@ Series
114
140±0.3
Mounting Holes
Four 4.5-dia.
or M4 holes
108
120
130 max.
G32X-CT03@ Series
G32X-CT10@ Series
Note: 1. Color of the hole
80±0.3
17
Two, M6 screws
17
109.8
Mounting Holes
Two 4.5-dia. or M4 holes
50
±0.2
140±0.2
150 max.
30
130
(see note 2)
80±0.2
100 max.
60 max.
Two, 4.6 dia.
holes
7.6
Two,
R2.3
holes
50
17
40
17 dia. hole
(15 dia., see
note 1)
24
9.5
14
35
55
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-CT03@ incorporates 30-cm solderless terminals and the G32X-CT10@
incorporates 100-cm solderless terminals.
84 Po wer Controllers G3PX
Installation
■Terminal Arrangement
Single-phase Models
G3PX-220EUN
G3PX-240EUN
G3PX-260EUN
1
2
3
Current input
4 to 20 mA DC CURRENT
4
5
6
7
8
9
10
G3PX-220EHN/220EC
G3PX-240EHN/240EC
G3PX-260EHN/260EC
CT UNIT
G32X-CT
RESET
ALARM
Internal
contact
configuration
OPEN 50 Hz
SHORT 60 Hz
(see note)
External main setting
3 kΩB 2 W
MAN SET
Voltage ON/OFF input
VOLTAGE IN
(1 to 5 VDC)
(Voltage)
External duty setting
3 kΩB
MAN DUTY SET
SOURCE
100/110 VAC
50/60 Hz
W
B
1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
2 kΩB, 2 W for
EUN-series models
5 to 24 VDC
INPUT
200/230 VAC
50/60 Hz
External main setting
2 kΩB 2 W
Voltage ON/OFF input
VOLTAGE IN
Current input 4 to 20 mA
DC CURRENT
MAN SET
(1 to 5 VDC)
(VOLTAGE)
External duty setting
3 kΩB
MAN DUTY SET
SOURCE
100/110 VAC
50/60 Hz
5 to 24 VDC
INPUT
200/230 VAC
50/60 Hz
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-220EH
G3PX-240EH
G3PX-260EH
CT UNIT
G32X-CT
RESET
ALARM
Internal contact
configuration
W
B
1
11
2
12
13
14
15
16
17
Voltage ON/OFF input
VOLTAGE IN
3
Current input 4 to 20 mA
DC CURRENT
4
5
6
7
8
9
10
External main setting
3 kΩB 2 W
MAN SET
(1 to 5 VDC)
(VOLTAGE)
External duty setting 3 kΩB
MAN DUTY SET
SOURCE
100/110 VAC
50/60 Hz
5 to 24 VDC
INPUT
200/230 VAC
50/60 Hz
Power Controllers G3PX 85
Safety Precautions
■P recautions for Co rrect Use
Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
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
Pay utmost attention when mounting the G3PX so that the G3PX will
not fall thus resulting in injury .
Vertical Mounting
Horizontal Mounting
Wiring
Make sure that the lead wires are thick enough according to the
current.
Be sure to turn off power to the G3PX when wiring. The G3PX has
current leakage although the G3PX is turned off 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·m
40-A model: 2.45 N·m
60-A model: 4.12 N·m
Terminal block:
Single-phase model: 0.98 N·m
Be sure to protect the terminals with the protective cover after wiring.
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
Note: In the case of flat mounting, the 30%
derating of the load current is required.
Close Mounting Example (Single-phase Models)
10 mm10 mm
50 mm
10 mm 10 mm
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.
Instrument Remarks
Thermal type Available
Digital type displaying root-mean-square
values
Moving-iron type
Rectifier type Not available (not precise
Multimeter
Digital multimeter
The instruments are used for displaying root-mean-square voltage
and current values of the AC circuitry.
enough)
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.
DUTY DUTY
100% 10%
If the External DUTY Adjuster is used, set the Internal DUTY
Adjuster to 100%.
86 Po wer Controllers G3PX
CT Unit
The CT Unit varies with the G3PX-series model. Use the following
CT Units in combination with the G3PX models.
G3PX-2@0EH Series: G32X-CT@@
G3PX-2@0EHN Series: G32X-CT@@HN
G3PX-2@0EC Series: G32X-CT@@C
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
number of turns of the wire around the CT Unit.
G3PX-20EHN Series (multi-heater open circuit 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 k
Refer to the following combinations.
G3PX-2@EH Series: G32X-V3K (3 k
G3PX-2@0EUN Series
G3PX-2@0EC Series
Ω according to the G3PX-series model in use.
Ω)
Base-up Function
If the model in use has the model number suffix “EUN,” the base-up
function is available.
The base-up output of the G3PX with a temperature controller output
of 0 mA (i.e., the temperature controller is turned off) and that of the
G3PX with a temperature controller output of 4 mA are different from
each other.
Troubleshooting
Check the following if the G3PX does not operate or has difficulty in
temperature control.
• The load does not turn on with 100% input.
Check the default internal ramp setting.
Make sure that the adjuster
is set to the farthest
DUTY
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-k
correctly.
clockwise position.
Ω and 3-kΩ DUTY adjusters are connected
External main setting External duty setting
Power Device Cartridge
Do not apply power to the G3PX with the Power Device Cartridge
dismounted.
Heater Open Circuit Detection
EH and EHN Models
The heater open circuit detective function is not available for detecting the phase less than the following.
Phase not detectable
G3PX-20EH Series: π/8 or less
G3PX-20EHN Series: Approx. π/6 or less
Power Supply
Single-phase Mode ls 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
operating in parallel, make sure that the two phases supplied to all
the single-phase models are the same.
(Positive) (Positive)
Note: 1, 2, 3, 5, 6, and 7 are terminal numbers
of the G3PX.
• 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.
Input signal
Controlled
soft-start
up
Input signal
Controlled
soft-start
up
Reduce this period.
TIME
TIME
Power Controllers G3PX 87
• The Level indicator is not OFF with a 0% input signal (G3PX2@0EUN Series).
Make sure that the BASE UP adjuster has been turned counterclockwise to the minimum setting.
Make sure that the
adjuster is turned
counterclockwise to the
BASE UP
minimum setting.
• The OPEN indicator of a multiple heater open circuit detection
model is lit at the initial stage (G3PX-2@0EHN 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.
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
CUR LIM adjuster for limiting current
Countermeasure 2: When the supply current is less than 50%,
increase 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.
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-E1-04
In the interest of product improvement, specifications are subject to change without notice.
88 Po wer Controllers G3PX
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