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PDF M2CJ-90A1 Data sheet ( Hoja de datos )
| Número de pieza | M2CJ-90A1 | |
| Descripción | Indicator | |
| Fabricantes | Omron | |
| Logotipo |  |
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Indicator
Indicator with Cylindrical 20-mm ×
12-dia. Body
Same basic design as the A3C Pushbutton Switch.
Good illumination with even surface brightness.
Cylindrical body means panel cutouts can be made
easily.
UL (E41515) and CSA (LR45258) approved.
M2C
RC
Ordering Information
Model Number Legend:
The model numbers used to order sets of Units are illustrated below. One set comprises the Display, Lamp, and Socket Unit.
(1)
(2) (3)
(4) (5)
M 2 C J - 9 0 A 1 - 24E R
(1) Shape of Display
Symbol
J
A
T
Shape
Rectangular
Square
Round
(2) Terminal Type
Symbol
Terminal type
0 Solder terminals
(3) Lighting Type
Symbol Lighting type
1 Illumination only
Colored-illumination models
are also available. For details,
refer to page 49.
“Colored-illumination”
models operate in the
way shown below:
Unlit
Lit
White
Color
The built-in LED
is colored.
(4) Lighting Method
LED lamp-lighted Models
Symbol Operating voltage
05E 5 VDC
12E 12 VDC
24E 24 VDC
Incandescent Lamp-
lighted Models
Symbol Operating voltage
06 5 VAC/VDC
14 12 VAC/VDC
28 24 VAC/VDC
(5) Color of Display
For LED lamp
Symbol
Color
R Red
Y Yellow
G Green
W White
For incandescent lamp
Symbol
Color
R Red
Y Yellow
G Green
A Blue
W White
47
1 page  
M2C
Display (Lighted Models)
LED Lamp
Button color Rectangular
Square
Round
M2C
Incandescent Lamp
Button color Rectangular
Square
Round
Red A3CJ-500R A3CA-500R A3CT-500R
Yellow
A3CJ-500Y A3CA-500Y A3CT-500Y
Green
A3CJ-500GY A3CA-500GY A3CT-500GY
White
A3CJ-500W A3CA-500W A3CT-500W
Note: The red, yellow, and white Displays listed above can be
used with either LED lamp-lighted models or incandescent
lamp-lighted models.
Lamp
LED Lamp
Color
5 VDC
Red A16-5DR
Yellow
A16-5DY
Green
A16-5DG
White
A16-5DW
Socket Unit
Rated voltage
12 VDC
24 VDC
A16-12DR A16-24DR
A16-12DY
A16-24DY
A16-12DG A16-24DG
A16-12DW A16-24DW
Sealing
Appearance
Red
Yellow
Green
White
Blue
A3CJ-500R
A3CJ-500Y
A3CJ-500G
A3CJ-500W
A3CJ-500A
A3CA-500R
A3CA-500Y
A3CA-500G
A3CA-500W
A3CA-500A
A3CT-500R
A3CT-500Y
A3CT-500G
A3CT-500W
A3CT-500A
Incandescent Lamp
Rated voltage
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
A16-5
A16-12
A16-24
Model
IP40
Terminal
Solder terminals
M2CJ-7001
M2CA-7001
Accessories
The accessories for the A3C Lighted Pushbutton Switch can also be used with the M2C. Refer to page 38.
M2CT-7001
Specifications
Ratings
LED Lamp
Incandescent Lamp
Rated
voltage
Rated
current
5 VDC
30 mA
12 VDC
15 mA
24 VDC
10 mA
Characteristics
Operating
voltage
5 VDC ±5%
12 VDC ±5%
24 VDC ±5%
Internal
limiting
resistance
33 Ω
270 Ω
1,600 Ω
Rated voltage
6 VAC/VDC
14 VAC/VDC
28 VAC/VDC
Rated current
60 mA
40 mA
24 mA
Ambient operating temperature
Ambient operating humidity
Ambient storage temperature
–10_C to 55_C (with no icing or condensation)
35% to 85%
–25_C to 65_C
Approved Standards
UL, CSA
Operating voltage
5 VAC/VDC
12 VAC/VDC
24 VAC/VDC
51
5 Page 
Technical Information
Connection of Different Power Supplies
The DC and AC power may be mixed for the circuit shown below.
Incorrect
Technical Information
Do not design a circuit where voltage is imposed between contacts,
otherwise contact weld may result.
Incorrect
Load
Load
Load
Contact Protective Circuit
Apply a contact protective circuit to extend the contact life, prevent noise, and suppress the generation of carbide or nitric acid. Be sure to apply
the contact protective circuit correctly, otherwise an adverse effect may occur.
The following provides typical examples of contact protective circuits. If the Limit Switch is used in an excessively humid location for switching a
load that easily generates arcs, such as an inductive load, the arcs may generate NOx, which will change into HNO3 if it reacts with moisture.
Consequently, the internal metal parts may corrode and the Limit Switch may fail. Be sure to select the ideal contact preventive circuit from the
following.
Typical Examples of Contact Protective Circuits
Circuit example
CR circuit
Power
supply
Power
supply
Diode method
Power
supply
Diode and
Zener diode
method
Power
supply
Applicable
current
AC DC
* Yes
Inductive
load
Yes Yes
Inductive
load
No
Inductive
load
Yes
No
Inductive
load
Yes
Feature
Element selection
*When AC is switched, the load
impedance must be lower than the
CR impedance.
The operating time will be greater if
the load is a relay or solenoid.
Connecting the CR circuit in parallel
to the load is effective when the
power supply voltage is 24 or 48 V
and in parallel to the contacts when
the power supply voltage is 100 to
200 V.
C: 1 to 0.5 µF x switching current (A)
R: 0.5 to 1 Ω x switching voltage (V)
The values may change according to
the characteristics of the load.
The capacitor suppresses the spark
discharge of current when the
contacts are open. The resistor limits
the inrush current when the contacts
are closed again. Consider the roles
of the capacitor and resistor and
determine ideal capacitance and
resistance values through testing.
Basically, use a capacitor with a
dielectric strength between 200 and
300 V. When AC is switched, make
sure that the capacitor has no
polarity.
Energy stored in the coil is changed
into current by the diode connected in
parallel to the load. Then the current
flowing to the coil is consumed and
Joule heat is generated by the
resistance of the inductive load. The
reset time delay with this method is
longer than that in the CR method.
The diode must withstand a peak
inverse voltage 10 times higher than
the circuit voltage and a forward
current as high or higher than the
load current.
This method will be effective if the
reset time delay caused by the diode
method is too long.
Use a Zener diode with a Zener
voltage that is approximately 1.2 ×
power supply voltage as, depending
on the environment, the load may not
operate.
Varistor
method
Yes Yes This method makes use of
---
constant-voltage characteristic of the
Power
supply
Inductive
load
varistor so that no high-voltage is
imposed on the contacts. This
method causes a reset time delay.
Connecting a varistor in parallel to
the load is effective when the supply
voltage is 24 to 48 V and in parallel to
the contacts when the supply voltage
is 100 to 200 V.
15
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