Datasheet

New Product News
DC Power Relays
G9EJ
DC Power Relays Capable of DC Loading at
High Voltage and Current
• Actualize improvement of inrush-withstand performance and a long-life
by adopting Omron’s own contact driving system.
• Actualize a high capacity interruption through the function of extinction
of magnetic arc by adopting high-efficiency magnetic circuit.
• Small and lightweight type. Size: H30 mm × W27 mm × L31 mm,
Weight: approx. 50 g.
RoHS Compliant
Refer to the Precautions on page 4.
Model Number Structure
G9EJ-@-@-@-@
——— —
1
2 3 4
1. Number of Poles
1: 1 pole
3. Coil Terminals
Blank: Tab terminal
2. Contact Form
Blank: SPST-NO
4. Special Functions
Ordering Information
Terminals
Models
Coil terminals
Contact terminals
#250 Tab
#250 Tab
Switching type
Contact form
Rated coil voltage
Model
SPST-NO
12 VDC
G9EJ-1
Ratings
● Coil
Rated voltage
12 VDC
Rated current
167 mA
Coil resistance
72 Ω
Must-operate voltage
60% max. of rated
voltage
Must-release voltage
5% min. of rated voltage
Maximum voltage(See note 3)
130% of rated voltage
(at 23°C within 2 minutes)
Power consumption
Approx. 2 W
Note: 1. The figures for the rated current and coil resistance are for a coil temperature of 23°C and have a tolerance of ±10%.
Note: 2. The figures for the operating characteristics are for a coil temperature of 23°C.
Note: 3. The figure for the maximum voltage is the maximum voltage that can be applied to the relay coil.
● Contacts
Item
Rated load
Condenser load
25 A at 400 VDC
Maximum switching voltage
400 V
Maximum switching current
25 A
1
G9EJ
DC Power Relays
Characteristics
Item
G9EJ-1
Contact voltage drop
0.5 V max. (for a carry current of 5 A)
Operate time
50 ms max.
Release time
30 ms max.
Between coil and contacts
Insulation resistance *1
1,000 MΩ min.
Between contacts of the same polarity 1,000 MΩ min.
Between coil and contacts
Dielectric strength
2,500 VAC 1 min
Between contacts of the same polarity 2,500 VAC 1 min
Impulse withstand voltage *2
Vibration resistance *3
4,000 V
Destruction
5 to 200 to 5 Hz, Acceleration: 44.1 m/s2
Malfunction
5 to 200 to 5 Hz, Acceleration: 44.1 m/s2
490 m/s2
Destruction
Shock resistance
490 m/s2
Energized
Malfunction
98 m/s2
Deenergized
Mechanical endurance *4
200,000 min.
Electrical endurance (condenser load) *5
400 VDC, 25 A, 100,000 ops. min.
Short-time carry current
20 A (1 min)
Maximum interruption current (resistive load)
30 A at 400 VDC (100 times min.)
Overload interruption (resistive load)
20 A at 400 VDC (300 times min.)
Ambient operating temperature
-40 to 85°C (with no icing or condensation)
Ambient operating humidity
5% to 85%
Weight (including accessories)
Approx. 50 g
Note: The above values are initial values at an ambient temperature of 23°C unless otherwise specified.
*1. The insulation resistance was measured with a 500-VDC megohmmeter.
*2. The impulse withstand voltage was measured with a JEC-212 (1981) standard impulse voltage waveform (1.2 × 50 µs)
*3. The Upper limit of double amplitude: 10 mm P-P
*4. The mechanical endurance was measured at a switching frequency of 3,600 operations/hr.
*5. The electrical endurance was measured at a switching frequency of 60 operations/hr.
Engineering Data
● Electrical Endurance
(Interruption Performance)
100
Operations
Operations (×10,000)
● Electrical Endurance
(Inrush Current Performance)
50
10,000
5,000
3,000
1,000
30
500
300
100
10
50
30
5
10
3
5
3
10
30
50
1
100
1
3
5
10
30
Switching current (A)
10,000
5,000
3,000
1,000
500
300
100
50
30
100
● Must-operate Voltage and Mustrelease Voltage Distributions
(Number of Relays × Percentage of
Rated Voltage)
Number of Relays
Energizing time (s)
● Carry Current vs. Energizing Time
50
Switching current (A)
30
Must-operate Voltage
Must-release Voltage
25
20
● Time Characteristic Distributions
(Number of Contacts × Time (ms))
Number of Contacts
1
30
Operate time
Release time
25
20
15
15
10
10
5
5
10
5
3
1
1
3
5
10
30
50
100
Carry current (A)
2
0
20
40
60
80
100
Percentage of rated voltage (%)
0
3
6
9
12
15
Time (ms)
G9EJ
● Vibration Malfunction
● Vibration Resistance
Acceleration (m/s2)
Rate of change (%)
DC Power Relays
60
50
Unconfirmed area
40
10.0
● Shock Malfunction
Must-operate Voltage
8.0
Z
Z´
Z
500
Must-release Voltage
6.0
400
4.0
300
X
Y´
X
X´
Y
Y
200
2.0
100
30
0.0
Confirmed area
−2.0
100
20
200
−4.0
Y´
Deenergized
300
−6.0
10
400
−8.0
0
1
3
5
10
30 50
100
Start
Energized
500
Z´
−10.0
300 500 1000
Frequency (Hz)
X´
After test
The value at which malfunction occurred
was measured after applying shock to the
test piece 3 times each in 6 directions along
3 axes.
Characteristics were measured after applying vibration
at a frequency of 5 to 200 to 5 Hz, acceleration of
44.1 m/s2 to the test piece (not energized) for 2 hours
each in 3 directions. The percentage rate of change is
the average value for all of the samples.
Note: The Upper limit of double amplitude: 10 mm P-P
Rate of change (%)
● Shock Resistance
10.0
Must-operate Voltage
8.0
Must-release Voltage
6.0
4.0
2.0
0.0
−2.0
−4.0
−6.0
−8.0
−10.0
Start
After test
Characteristics were measured after applying a shock
of 490 m/s2 to the test piece 3 times each in 6 directions
along 3 axes. The percentage rate of change is the
average value for all of the samples.
Dimensions (Unit: mm)
G9EJ-1
Terminal Arrangement
(BOTTOM VIEW)
27
31
2
(−)
4
30
(+)
1
3
11
0.8
6.3
6.3
Conecter terminal (Tab 250)
0.8
Dimension (mm) Tolerance (mm)
10 or lower
±0.3
10 to 50
±0.5
15.5
15.4
8.5
0.8
20.9
3
G9EJ
DC Power Relays
Precautions
WARNING
Take measures to prevent contact with charged parts
when using the Relay for high voltages.
Precautions for Correct Use
Refer to the relevant catalog for common precautions.
1. The G9EJ Relays’ contacts have polarity. Be sure to perform
connections with the correct polarity. If the contacts are connected with the reverse polarity, the switching characteristics
specified in this document cannot be assured.
2. Do not drop or disassemble this Relay. Not only may the
Relay fail to meet the performance specifications, it may also
result in damage, electric shock, or burning.
3. Do not use these Relays in strong magnetic fields of 800 A/m
or higher (e.g., near transformers or magnets). The arc discharge that occurs during switching may be bent by the magnetic field, resulting in flashover or insulation faults.
4. This Relay is a device for switching high DC voltages. If it is
used for voltages exceeding the specified range, it may not
be possible to interrupt the load and burning may result. In
order to prevent fire spreading, use a configuration in which
the current load can be interrupted in the event of emergencies.
In order to ensure safety of the system, replace the Relay on
a regular basis.
5. If the Relay is used for no-load and/or low-load switching, the
contact resistance may increase and so confirm correct operation under the actual operating conditions.
6. With this Relay, if the rated voltage (or current) is continuously applied to the coil and contacts, and then turned OFF
and immediately ON again, the coil temperature, and consequently the coil resistance, will be higher than usual. This
means that the must operate voltage will also be higher than
usual, exceeding the rated value (“hot start”). In this case,
take the appropriate countermeasures, such as reducing the
load current or restricting the energizing time or ambient
operating temperature.
7. The ripple percentage for DC relays can cause fluctuations in
the must-operate voltage or humming. For this reason,
reduce the ripple percentage in full-wave rectified power supply circuits by adding a smoothing capacitor. Ensure that the
ripple percentage is less than 5%.
8. Ensure that a voltage exceeding the specified maximum voltage is not continuously applied to the coil. Abnormal heating
in the coil may shorten the lifetime of the insulation coating.
9. Do not use the Relay at a switching voltage or current greater
than the specified maximum values. Doing so may result in
arc discharge interruption failure or burning due to abnormal
heating in the contacts.
10. The contact ratings are for resistive loads. The electrical
endurance with inductive loads is inferior to that of resistive
loads. Confirm correct operation under the actual operating
conditions.
11. Do not use the Relay in locations where water, solvents,
chemicals, or oil may come in contact with the case or terminals. Doing so may result in deterioration of the case resin or
abnormal heating due to corrosion or contamination of the
terminals. Also, if electrolyte adheres to the output terminals,
electrolysis may occur between the output terminals, resulting in corrosion of the terminals or wiring disconnections.
12. Be sure to turn OFF the power and confirm that there is no
residual voltage before replacing the Relay or performing wiring.
13. The distance between crimp terminals or other conductive
parts will be reduced and insulation properties will be lowered
if wires are laid in the same direction from the contact terminals. Use insulating coverings, do not wire in the same direction, and take other measures as required to maintain
insulation properties.
14. Use either a varistor, or a diode plus Zener diode as a protective circuit against reverse surge in the relay coil. Using a
diode alone will reduce the switching characteristics.
• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.
• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad
systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious
influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or
equipment, and be sure to provide the system or equipment with double safety mechanisms.
Note: Do not use this document to operate the Unit.
OMRON Corporation
ELECTRONIC AND MECHANICAL COMPONENTS COMPANY
Contact: www.omron.com/ecb
Cat. No. J193-E1-02
0114 (0413) (O)
Similar pages