Safety Precautions
Warning Indications
Precautions for Safe Use
(1)
Do not use or store the Product in the following locations:
• Outdoor or locations subject to direct sunlight
• Locations subject to rain and wind damage
• Locations subject to excessive vibration or shock
• Locations subject to rapid temperature changes
• Locations prone to icing and dew condensation
• Locations subject to water or oil
• Locations subject to dust or corrosive gases
(particularly sulfurizing gases, ammonia, etc.)
• Locations subject to influence of static electricity and noise
• Locations subject to bugs and small animals
(2) A
switch or circuit breaker should be provided close to this unit.
The switch or circuit breaker should be within easy reach of
the operator, and must be marked as a disconnecting means
for this unit.
(3)
Mount the Product in the correct direction for installation.
(4)
Be sure to use power terminals carefully, because power
supply terminals have hazardous voltage.
(5)
Use the wire given in this manual.
(6)
Use the power supply voltage within the range of the
specifications and rated values. Use the input voltage within
the range of the specifications and rated values.
(7) Make
sure the crimp terminals for wiring are of the specified size.
(8) Do
not connect anything to terminals that are not being used.
(9)
Confirm the wiring the input and output terminals correctly
before power is supplied.
(10) The terminal block may be damaged if you insert a
flat-blade screwdriver in the release hole with excessive
force. When inserting a flat-blade screwdriver into the
release holes, operate with a force of 15·N or less.
(11) K7GE-MG may be subject to radio disturbances. Do not install
the Product near equipment that generates high frequencies or
surges.
(12) The maximum terminal temperature is 80°C. Use wires with a
heat resistance of 80°C min to wire the terminals.
(13) Make sure the LCD and the LEDs for output indicators
operate correctly. Depending on the operating environment,
the Product parts may deteriorate faster than expected,
causing the indicators to fail.
(14) Use
the
cable within the length that is rated in the specification
requirements for the wiring between the sensor and the
Product. As for the requirements on the cable distance, refer to
K7GE-MG User's Manual (Cat. No. N224).
(15) In
order to prevent inductive noise, wire the lines connected to
the Product separately from power lines carrying high voltages
or currents. Also, do not wire in parallel with or on the same
cables as power lines. Other measures for reducing noise are
to separate from ducts including noisy lines.
(16) Do not continue to use the Product if the front surface peels.
(17) The
alarm output function is a function for the output of an alarm
when the set threshold value is below. Do not use this function for
control, etc.
(18) Use this Product inside the control panel to prevent external noise.
(19) When
discarding the Product, properly dispose of it as industrial
waste.
(20) Never touch the charging terminal of the load while the
K7GE-MG is in measurement operation.
(21) K7GE-MG cannot be used for legal inspection. Be sure to
use a periodically calibrated measuring instrument for legal
inspection.
(22) When wiring, wire by enough length.
(23) Check terminal polarity when wiring and wire all connections
correctly. Do not wire the input and output terminals incorrectly.
(24) K7GE-MG provides 50 VDC of megger voltage. Do not use on
equipment that may be damaged by this voltage.
(25) Use and store the Product in a location where the ambient
temperature and humidity are within the specified ranges. If
applicable, provide forced cooling.
(26) Please read and understand this Instruction Manual before
using K7GE-MG.
Observe the following operating methods to prevent failure and
malfunction.
(1) During periodic inspection, installation of an additional
sensor, or adjustment of sensor position, use the Product
after ensuring that correct operation can be performed.
(2) When mounting K7GE-MG on a DIN Track, follow the
installation method shown on the right to install it correctly.
(3) Confirm that wire does not stick up after wiring of stranded
cable.
(4) In case of crossover wiring, install these by 10 A per 1
terminal because when Products are connected more than
one in parallel, quite many electric currents to be called off.
(5) The terminal block may be damaged if specialized tool is
not used. Use a recommended flat-blade screwdriver to
inserted into a release hole on the terminal block.
(6) This Product is designed for use by qualified personnel with
a knowledge of electrical systems. Read this Instruction
Manual carefully before using the Product.
(7) Use the power supply voltage, input power, and other
power supplies and transformers with suitable capacities
and rated outputs.
(8) Use a power supply that will reach the rated voltage within
1 second after the power is turned ON.
(9) Do
not
install the Product close contact with the heating element.
(10) Do not install the Product near equipment that generates
high frequencies or surges.
(11) Install the Product so that the load doesn't span the Product
body.
(12) If an error occurs during K7GE-MG operation, stop
operation immediately and make suitable corrections such
as replacement.
(13) Do not use K7GE-MG for safety devices or applications that
could result in loss of life.
(14) Make sure to connect Main Unit and Probe units before use.
(15) Make sure that the number of additional Probe Units is
within the specified range.
(16) Be sure to install a magnetic contactor, etc. between the
power supply and the load, and wire K7GE-MG on the
secondary side of it.
(17) Do not turn ON power to the load while K7GE-MG is
measuring.
(18) Set the "Motor stop waiting time" setting value to at least
the time from when the contactor is turned off until the load
completely stops.
(19) If you accidentally drop K7GE-MG, the inside of the Product
may be damaged, so do not use it.
(20) Do not wire anything to the release holes.
(21) Do not tilt or twist a flat-blade screwdriver while it is inserted
into a release hole on the terminal block. The terminal block
may be damaged.
(22) Insert a flat-blade screwdriver into the release holes at an
angle. The terminal block may be damaged if you insert the
screwdriver straight in.
(23) Do not allow the flat-blade screwdriver to fall out while it is
inserted into a release hole.
(24) Do not bend a wire past its natural bending radius or pull on
it with excessive force. Doing so may cause the wire
disconnection.
(25) Do not insert more than one wire into each terminal
insertion hole.
(26) Do not use any liquids such as paint thinner, similar
solvents or alcohol to clean the Product. Clean it with a soft,
dry cloth.
• For wiring from the Probe Unit to the load, use a Class CC, Class J, or Class T fuse with a rated current of 7A or less.
• The protection provided by the device may be impaired if the device is used in a manner that is not specified by the manufacturer.
•To use the Product, install it as an embedded device within a control panel.
• The table below shows the nominal voltage and measurement circuit connections available for each measurement category in the
Main Power Supply System Configurations. Do not use the device under conditions that exceed this category and conditions.
This is a class A product. In residential areas it may cause radio
interference, in which case the user may be required to take
adequate measures to reduce interference.
Suitability for Use
Omron Companies shall not be responsible for conformity with
any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of
the Product.
At Buyer’s request, Omron will provide applicable third party
certification documents identifying ratings and limitations of
use which apply to the Product. This information by itself is not
sufficient for a complete determination of the suitability of the
Product in combination with the end product, machine, system,
or other application or use. Buyer shall be solely responsible
for determining appropriateness of the particular Product with
respect to Buyer’s application, product or system. Buyer shall
take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION
INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN
LARGE QUANTITIES WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS
THE RISKS, AND THAT THE OMRON PRODUCT(S) IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED
USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
Minor electric shock, fire, or malfunction may
occasionally occur. Do not allow metal objects,
conductors, or cuttings from installation work to
enter the Product.
Minor injury due to explosion may occasionally occur.
Do not use the Product where subject to flammable or
explosive gas.
Minor electric shock, fire, or malfunction may
occasionally occur. Do not disassemble, modify, or
repair the Product or touch the interior of the Product.
If used the Product with incorrect wiring, it may cause
property damage due to ignition. Make sure the cable
is connected properly when the power supply is turned
ON.
If the wiring material is inserted in a shallow position,
it may cause property damage due to ignition. When
wiring, make sure that the wiring material is properly
inserted all the way into the terminal block.
Minor injury due to electric shock may occasionally
occur. Do not touch the Product except for any
buttons (keys) while power is being supplied.
Always connect the protective earthing terminal ( )
to a ground. Use AWG 16 for the protective conductor.
Perform periodic inspection to the Product.
A malfunction in the Product may occasionally
prevent monitoring impossible or alarm outputs,
resulting in property damage to connected equipment
or devices. To maintain safety in the event of
malfunction of the Product, take appropriate safety
measures, such as installing a monitoring device on a
separate line.
CAUTION
Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury, or property damage.
Electrical Shock Caution
Indicates possibility of electric shock under specific
conditions.
General Prohibition
Indicates non-specific general prohibitions.
Disassembly Prohibition
Indicates prohibitions when there is a possibility of
injury, such as from electric shock, as the result of
disassembly.
General Caution
Indicates non-specific general cautions, warnings,
and dangers.
Precaution for
Safe Use
Precautions on what to do and what not to
do to ensure safe usage of the product.
Precaution for
Correct Use
Precautions on what to do and what not to do
to ensure proper operation and performance.
Meaning of Product Safety Symbols
Mounting to DIN Track
Dismounting from the DIN Track
Pull out the DIN Track
mounting hook with a
flat-blade screwdriver
and lift the Unit from the
bottom to remove it.
The K7GE-MG can be
easily installed and
removed if the distance
to other devices is 30
mm or more.
(1) Connect the Units together.
(5) Install an End Plate (sold
separately) on each side of the
connected K7GE-MG without
any gap. Up to one Main Unit
and eight Probe Units can be
installed between End Plates.
Applicable DIN Track
PFP-100N (100 cm)
PFP-50N (50 cm)
Conformance to Safety Standards
Conformance to EN/IEC Standards
Insulation Resistance
Monitoring Device
Precaution for Correct Use
Thank you for purchasing the OMRON Product.
Please observe the following items when using the Product.
Before using the Product, thoroughly read and understand
this manual to ensure correct use.
This Product is designed for use by qualified personnel with
a knowledge of electrical systems.
Be sure to read the K7GE-MG User's Manual (Cat. No.
N224) before using the Product.
Keep this manual in a safe location so that it is available for
reference when required.
The appearance in which the Main Unit and the Probe Unit
are connected is called K7GE-MG.
If you have any questions, consult your dealer or OMRON
representative.
Mounting method
(2) Pull out all DIN Track
mounting hooks on the
bottom of the K7GE-MG.
(3) To mount the K7GE-MG to
a DIN Track, hook the upper
hook of K7GE-MG onto the
DIN Track and press the
Units in the direction of the
arrow.
(4) Raise all DIN Track mounting
hook and fix the K7GE-MG
to the DIN Track.
©All Rights Reserved
5641253-5A (Side-B)
CAUTION
End
Plate
End
Plate
Probe Unit
(K7GE-MG1)
Main Unit
(K7GE-MGM)
Before you mount on the DIN Track, be sure to connect the
units.
30 mm
above
Main Power Supply System Configurations
TT
3-phase, 4-wire type
(neutral point grounding)
Phase voltage/
line voltage
277 V/ 480 V
347 V/ 600 V in
addition to the above
480 V in addition to
the above
480 V in addition to
the above
480 V in addition to
the above
Phase voltage/
line voltage
240 V/ 480 V
Line voltage
300 V
Same as above
Line voltage
300 V
Line voltage
240 V
3-phase,
3-wire type
(no grounding)
Single-phase,
2-wire type
AC or DC
Single-phase
(split phase),
2-wire type
AC or DC
3-phase,
3-wire type
(single-phase
grounding)
TN-C-S
P1
P2
N
P3
E
E
L1
L2
N
L3
PE
PEN
P1
P2
P3
E
E
P1
P2
P3
E
E
L1
L2
E
E
L1
L2
E
E
N
CAT III
CAT II
TT:
Connect E in the diagram
above to the No. 7 terminal
(PE) of the K7GE-MGM.
Connect P1 and P2 to the
No. 1 and No. 3 terminals
of the K7GE-MG1.
Connect E in the diagram above to the No. 7 terminal
(PE) of the K7GE-MGM.
Connect P1 and P2 to the No. 1 and No. 3 terminals
of the K7GE-MG1.
Connect E in the diagram above to the No. 7 terminal
(PE) of the K7GE-MGM.
Connect L1 and L2 to the No. 1 and No. 3 terminals of
the K7GE-MG1.
TN-C-S:
Connect PE in the diagram
above to the No. 7 terminal
(PE) of the K7GE-MGM.
Connect L1 and L2 to the
No. 1 and No. 3 terminals
of the K7GE-MG1.
Fixed
equipment
Distribution
board
CAT IV
CAT III
CAT II
CAT I
Power
outlet
Internal wiring
Service
entry wire
The measurement category classifies the places and equipment
which you can connect to the measurement terminals, as
prescribed in EN/IEC61010-2-030.
Each category is as follows.
CAT I: Equipment to connect to circuits where measures are
taken to limit transient overvoltages to low levels
CAT II: Energy-consuming equipment with an energy supply from
fixed wiring equipment (such as a power outlet)
CAT III: Equipment in fixed wiring equipment that particularly
demands equipment reliability and effectiveness
CAT IV: Equipment to use at the electrical service entry
OMRON EUROPE B.V. (Importer in EU)
Wegalaan 67-69, NL-2132 JD Hoofddorp The Netherlands
Phone 31-2356-81-300 FAX 31-2356-81-388
OMRON ELECTRONICS LLC
2895 Greenspoint Parkway, Suite 200 Hoffman Estates, IL 60169 U.S.A.
Phone 1-847-843-7900 FAX 1-847-843-7787
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark, Singapore 119967
Phone 65-6835-3011
FAX 65-6835-2711
OMRON Corporation (Manufacturer)
Shiokoji Horikawa, Shimogyo-ku, Kyoto 600-8530 JAPAN
Wire type
Wiring
material
Recommended
wires
Stripping length
without ferrules
Solid or
Stranded wires
Copper
0.25 to 1.5 mm²
AWG 24 to AWG 16
8 mm
Connection to measurement circuit
INSTRUCTION MANUAL
EN
OMRON Corporation
K7GE-MG
Measurement category
Specifications
Power supply voltage and frequency
K7GE-MGMA: 100 to 240 VAC, 50/60 Hz
K7GE-MGMD: 24 VAC, 50/60 Hz, 24 VDC
Operating voltage range
85% to 110% of the rated voltage
Operating frequency range
45 to 65 Hz
Power consumption
Maximum Unit configuration: one Main Unit and eight Probe Units
12.9 VA max. (100 to 240 VAC)/
7.8 VA max. (24 VAC)/ 4.7 W max. (24 VDC)
Minimum Unit configuration: one Main Unit and one Probe Unit
8.4 VA max. (100 to 240 VAC)/
4.6 VA max. (24 VAC)/ 2.5 W max. (24 VDC)
Ambient operating temperature
-10 to 55°C (with no condensation or icing)
Ambient operating humidity
25% to 85% (with no condensation)
Storage temperature
-20 to 65°C
Altitude
2,000 m max.
Recommended fuse
T2A, time delay, high-breaking capacity
(for Main Unit operating power supply)
Tripping current: 7 A max., fast-blow
(for Probe Unit voltage input)
Vibration resistance Frequency
10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s²,
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance
100 m/s², 3 times each in X, Y, and Z axes, 6 directions
Degree of protection
IP20
Terminal block type
Push-In Plus
Exterior color
Black (Munsell N 1.5)
Mounting
DIN Track mounting
Weight
Main Unit: Approx. 156 g
Probe Unit: Approx. 63 g
Measurement range
0.1 to 99.9 M
Ω
(0.0 M
Ω
for less than 0.1 M
Ω
)
Measurement accuracy
±5% rdg. ±1 digit
(at ambient temperature -10 to 55°C and ambient humidity
25% to 65%)
Installation environment
Operation voltage:
EN/IEC61010-1, Overvoltage category II, Pollution Degree 2
Measurement circuit:
EN/IEC61010-2-030, Pollution Degree 2
Measurement category conforms to Conformance to Safety
Standards.
Industrial electromagnetic environment
EN/IEC61326-1
Wiring material
