Omron MK-SX - User manual

1
New Product
Power Relays
MK-S(X)
MK-S-series Relays with DC-
switching Models That Can Switch
220 VDC, 10 A (Resistive Load).
• Switch a DC load of 220 VDC, 10 A (resistive load).
• Lineup includes models with SPST-NO and SPST-NO/
SPST-NC contact forms.
• Using a SPST-NO/SPST-NC contact form enables
detecting contact welding. (When the NO contacts
become welded, the NC contacts will maintain a minimum
distance of 0.5 mm.)
• Models are also available with a built-in test button.
• Models for AC Loads can switch 250 VAC, 15 A (resistive
load).
• RoHS compliant.
Ordering Information
General-purpose Relays
Models for DC Loads
Models for AC Loads
Accessory (Order Separately)
Connecting Socket
Contact form SPST-NO SPST-NO/SPST-NC
Type Rated coil voltage (V) Model Rated coil voltage (V) Model
Standard Models AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1XT-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2XT-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Built-in
Operation Indicators
AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1XTN-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2XTN-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Test Button AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1XTI-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2XTI-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Test Button and
Built-in Operation Indicators
AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1XTIN-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2XTIN-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Contact form SPST-NO SPST-NO/SPST-NC
Type Rated coil voltage (V) Model Rated coil voltage (V) Model
Standard Models AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1T-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2T-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Built-in
Operation Indicators
AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1TN-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2TN-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Test Button AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1TI-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2TI-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Models with Test Button and
Built-in Operation Indicators
AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS1TIN-10 AC: 24, 100, 110, 120, 200, 220, 230, 240 MKS2TIN-11
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
Classifications Model
Back-connecting Socket PCB Terminals P7M-06P

MK-S(X)
2
Specifications
Ratings
Operating Coil
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/−20% for AC rated current and
±15% for DC coil resistance.
2. Performance characteristic data are measured at a coil temperature of 23°C.
3. The maximum allowable voltage is the maximum value of the allowable voltage range for the operating power supply for the relay coil.
There is no continuous allowance.
4. The rated current is approximately 5 mA higher for Models with Built-in Operation Indicators (DC operating coils).
Item Rated current (mA) Coil
resistance
(Ω)
Must
operate
voltage (V)
Must
release
voltage (V)
Maximum
voltage
allowable (V)
Power
consumption
(VA, W)
Rated voltage (V) 50 Hz 60 Hz Percentage of rated voltage
AC
24 110 96.3 48.4
80% max.
30% min. at
60 Hz
25% min. at
50 Hz
110%
Approx. 2.3 VA
at 60 Hz
Approx. 2.7 VA
at 50 Hz
100 26.6 23.1 760
110 24.2 21.0 932
120 22.2 19.3 1,130
200 13.3 11.6 3,160
220 12.1 10.5 3,550
230 11.5 10.0 4,250
240 11.0 9.6 4,480
DC
12 126 95
15% min. Approx. 1.5 W
24 63.2 380
48 32.0 1,500
110 13.6 8,060
220 6.8 32,200

MK-S(X)
3
Contact Ratings for Models for DC Loads
Note: If the L/R of an inductive load exceeds 7 ms with a Model for a DC Load, the arc interruption time must be less than approximately 50 ms
to use the Relay. Design the circuit so that the arc interruption time is 50 ms or less.
*These values apply to a switching frequency of 60 times per minute.
Contact Ratings for Models for AC Loads
*These values apply to a switching frequency of 60 times per minute.
Contact form SPST-NO SPST-NO/SPST-NC
Model MKS1XT(I)(N)-10 MKS2XT(I)(N)-11
Load Resistive load Inductive load Resistive load Inductive load
Item L/R = 7 ms DC13 class L/R = 7 ms DC13 class
Contact configuration NO Double-break Double-break
NC --- Single-break
Contact material AgSnIn AgSnIn
Rated load NO 10 A, 220 VDC 5 A, 220 VDC 0.4 A, 220 VDC 5 A, 220 VDC 3 A, 220 VDC 0.2 A, 220 VDC
NC --- 2 A, 220 VDC 0.3 A, 220 VDC 0.1 A, 220 VDC
Rated carry current NO 10 A 5 A
NC --- 2 A
Max. switching voltage NO 220 VDC 220 VDC
NC ---
Max. switching current NO 10 A 5 A
NC --- 2 A
Max. switching capacity
(reference value)
NO 2,200 W --- --- 1,100 W --- ---
NC --- 440 W --- ---
Contact form SPST-NO SPST-NO/SPST-NC
Model MKS1T(I)(N)-10 MKS2T(I)(N)-11
Load Resistive load Resistive load
Item
Contact configuration NO Double-break Double-break
NC --- Single-break
Contact material AgSnIn AgSnIn
Rated load NO 15 A, 250 VAC 15 A, 250 VAC
NC --- 5 A, 250 VAC
Rated carry current NO 15 A 15 A
NC --- 5 A
Max. switching voltage NO 250 VAC 250 VAC
NC ---
Max. switching current NO 15 A 15 A
NC --- 5 A
Max. switching capacity
(reference value)
NO 3,750 VA 3,750 VA
NC --- 1,250 VA

MK-S(X)
4
Characteristics
Note: The values given above are initial values.
*1. The contact resistance was measured for 1 A at 5 VDC using the voltage drop method.
*2. The operate time was measured with the rated voltage imposed and any contact bounce ignored at an ambient temperature of 23°C.
*3. The insulation resistance was measured with a 500-VDC insulation resistance tester at the same places as those used for checking the
dielectric strength.
*4. The electrical endurance was measured at an ambient temperature of 23°C.
Approved Standards
UL508 (File No. E41515)
*
CSA Standard: CSA Certification by : CSA C22.2 No.14
IEC Standard/TÜV Certification: IEC61810-1 (Certification No. R50104853)
Contact resistance *1100 mΩmax.
Operate time *2AC: 20 ms max.
DC: 30 ms max.
Release time *220 ms max.
Max. operating
frequency
Mechanical 18,000 operations/h
Rated load 1,800 operations/h
Insulation resistance *3100 MΩmin.
Dielectric
strength
Between coil and contacts 2,500 VAC 50/60 Hz for 1 min between
Between contacts of different polarity 2,500 VAC 50/60 Hz for 1 min between
Between contacts of same polarity 1,000 VAC 50/60 Hz for 1 min
Vibration
resistance
Destruction 10 to 55 to 10 Hz, 0.50-mm single amplitude (1.0-mm double amplitude)
Malfunction 10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5-mm double amplitude)
Shock
resistance
Destruction 1,000 m/s2
Malfunction 100 m/s2
Endurance Mechanical 1,000,000 operations min. (at 18,000 operations/hr)
Electrical *4100,000 operations min. (at rated load and 1,800 operations/hr)
Failure rate P level (reference value) 10 mA at 24 VDC
Ambient operating temperature −40°C to 60°C (with no icing or condensation)
Note: The range is −25°C to 60°C for models with built-in operation indicators.
Ambient operating humidity 5% to 85%
Weight SPST-NO: Approx. 73 g, SPST-NO/SPST-NC: Approx. 82 g
Model Coil ratings Contact ratings Operations
MKS1XT@-@
12 to 220 VDC
24 to 240 VAC
NO contacts
10 A, 220 VDC (Resistive)
5 A, 220 VDC L/R (T0.632) = 7 ms
0.4 A, 220 VDC L/R (T0.95) = 300 ms
6,000
MKS2XT@-@
NO contacts
5 A, 220 VDC (Resistive)
3 A, 220 VDC L/R (T0.632) = 7 ms
0.2 A, 220 VDC L/R (T0.95) = 300 ms
NC contacts
2 A, 220 VDC (Resistive)
0.3 A, 220 VDC L/R (T0.632) = 7 ms
0.1 A, 220 VDC L/R (T0.95) = 300 ms
MKS1T@-@NO contacts 15 A, 250 VAC (Resistive)
MKS2T@-@NO contacts 15 A, 250 VAC (Resistive)
NC contacts 5 A, 250 VAC (Resistive)
Model Coil ratings Contact ratings Operations
MKS1XT@-@
12, 24, 48, 110,
220 VDC
24, 100, 110, 120,
200, 220, 230,
240 VAC
NO contacts
DC-1: 10 A, 220 VDC
5 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.4 A, 220 VDC
100,000
MKS2XT@-@
NO contacts
DC-1: 5 A, 220 VDC
3 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.2 A, 220 VDC
NC contacts
DC-1: 2 A, 220 VDC
0.3 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.1 A, 220 VDC
MKS1T@-@NO contacts AC-1: 15 A, 250 VAC 50/60 Hz
MKS2T@-@NO contacts AC-1: 15 A, 250 VAC 50/60 Hz
NC contacts AC-1: 5 A, 250 VAC 50/60 Hz

MK-S(X)
5
Engineering Data
Maximum Switching Power
MKS1XT-10, MKS1XTN-10 MKS2XT-11, MKS2XTN-11
MKS1XTI-10, MKS1XTIN-10 MKS2XTI-11, MKS2XTIN-11
MKS1T-10, MKS1TN-10 MKS2T-11, MKS2TN-11
MKS1TI-10, MKS1TIN-10 MKS2TI-11, MKS2TIN-11
Ambient Temperature vs. Must Operate Voltage and Must Release Voltage
MKS2XT-11 MKS2XT-11
AC Specification (60 Hz) DC Specification
100
10
5
1
0.4
0.01
0.1
1 10 100
1.000
Switching voltage (V)
Switching current (A)
DC inductive load
L/R = 7 ms
DC resistive load
DC inductive load
DC13 class
1 10 100 1.000
100
10
5
3
2
1
0.3
0.2
0.1
0.01
DC resistive load
NO
DC resistive load
L/R = 7 ms
NO
DC resistive load
NC
DC resistive load
L/R = 7 ms
NC
DC resistive load
DC13 class
NC
DC resistive load
DC13 class
NO
Switching voltage (V)
Switching current (A)
100
15
10
1
0.1
0.01
1 10 100
1.000
AC resistive load
Switching voltage (V)
Switching current (A)
100
15
10
5
1
0.1
0.01
1 10 100
1.000
AC resistive load
NO
AC resistive load
NC
Switching voltage (V)
Switching current (A)
Must operate
voltage
Must release
voltage
100
80
60
40
20
−40 23 6
0
Ambient temperature (°C)
Must operate/release voltage (%)
Number of Relays: 5
100
80
60
40
20
−40 23 6
0
Must operate
voltage
Must release
voltage
Ambient temperature (°C)
Must operate/release voltage (%)
Number of Relays: 5

MK-S(X)
6
Test Button
The circuit can be checked using either of two modes.
Test Button Applications
Example: Checking operation of Relays and sequence circuits.
Test Button
DC specification: Blue
AC specification: Red
Normal Mode 1
(momentary)
Press the button
for operation.
(No tool is required.)
Mode 2
(locked)
Lock the contacts by
pressing down on th
e
button and turning it.

MK-S(X)
7
Dimensions (Unit: mm)
General-purpose Relays
Terminal Arrangement/Internal Connection (Bottom View)
Note: 1. Wire properly using the correct coil polarity.
2. The contact terminals on Models for DC Loads have polarity. Wire properly using the correct polarity.
MKS1XT-10
MKS1XTI-10
MKS1XTN-10
MKS1XTIN-10
MKS2XT-11
MKS2XTI-11
MKS2XTN-11
MKS2XTIN-11
DC specification AC specification DC specification AC specification
MKS1T-10
MKS1TI-10
MKS1TN-10
MKS1TIN-10
MKS2T-11
MKS2TI-11
MKS2TN-11
MKS2TIN-11
DC specification AC specification DC specification AC specification
34.5 max.
44 max.
34.5 max.
0.8
7.3
Models for DC Loads
Standard Models
MKS1XT-10 MKS2XT-11
Models with Built-in Operation Indicators
MKS1XTN-10 MKS2XTN-11
Models for AC Loads
Standard Models
MKS1T-10 MKS2T-11
Models with Built-in Operation Indicators
MKS1TN-10 MKS2TN-11
34.5 max.
3.5
44 max.
34.5 max.
0.8
7.3
29.7
0.5
Models for DC Loads
Models with Test Button
MKS1XTI-10 MKS2XTI-11
Models with Test Button and Built-in
Operation Indicators
MKS1XTIN-10 MKS2XTIN-11
Models for AC Loads
Models with Test Button
MKS1TI-10 MKS2TI-11
Models with Test Button and Built-in
Operation Indicators
MKS1TIN-10 MKS2TIN-11
4
BA
8
6 (
+)
2
4
BA
8(+)
6 (+)
4
B (−)A (+)
8
6 (+) 4
BA
8
6 (+)
2
4
B (−)A (+)
8(+)
6 (+)
2
4
BA
8(+)
6 (+)
4
BA
8
6
2
4
BA
8
6
4
B (−)A (+)
8
64
BA
8
6
2
4
B (−)A (+)
8
6
2
4
BA
8
6

MK-S(X)
8
Connecting Socket
Back-connecting Socket
8.3
7.7
5.5
0.9
PCB MountingHoles
(Bottom View)
Terminal Arrangement/Internal Connections
(Bottom View)
4
2
8
A
6
B
39 max.
43 max.
21.9
4.35
0.9 7.7
8.3
5.5
39 max.
22.1
Dimensions
P
7
M
-
06P

MK-S(X)
9
Accessory (Order Separately)
Connecting Socket
Note: The P7M-06P Connecting Socket can be used with SPST-NO and SPST-NO/SPST-NC Models for DC Loads and SPST-NO and SPST-
NO/SPST-NC Models for AC Loads.
Relay Hold-down Clips
Use the Clips to securely mount the Relay and prevent it from falling due to vibration or shock.
Note: The minimum order for the PYC-A2 is ten clips.
Socket Mounting Height
Socket Back-connecting Socket
Number of poles PCB terminals
2
P7M-06P
Applicable Relay models MKS1XT-10
MKS1XTI-10
MKS1XTIN-10
MKS1T-10
MKS1TI-10
MKS1TIN-10
MKS2XT-11
MKS2XTI-11
MKS2XTIN-11
MKS2T-11
MKS2TI-11
MKS2TIN-11
Socket
Back-connecting Socket PCB terminals P7M-06P PYC-A2
PYC-A2
One Set (Two Clips)
4.5 1.2
42.8
5 max.
4.5
MK-S(X)
64 61

MK-S(X)
10
Safety Precautions
Refer also to Precautions for All Relays.
Installation
•Models for DC Loads (i.e., models with “X” in the model number)
have permanent magnets built into the insulating block, so
magnetic interference will occur and contact switching capacity will
be decreased if a permanent magnet or other magnetic body
comes near the Relay.
•Models for AC Loads do not have permanent magnets built in.
Wiring
•The contact terminals on Models for DC Loads (i.e., models with
“X” in the model number) have polarity. Wiring with incorrect
polarity may result in inability to turn OFF the Relay or loss of
functionality.
•Wire models with built-in operation indicators with the correct coil
polarity (DC operating coil).
Test Button
•Turn OFF the power supply before operating the test button.
Always return the test button to the original position after you use it.
•Do not use the test button as a switch.
•The durability of the test button is 100 operations minimum.
Operating Environment
Do not use the Relay in environments with combustible gas. Doing so
may result in explosion due to arcing.
Storage
Models for DC Loads (i.e., models with “X” in the model number) are
magnetized because they have a built-in magnet to deflect and
extinguish the arc. Do not install the Relay near IC cards or other
items that may be adversely affected by magnetism.
Usage
Use the Relay mounted in the P7M-06P Socket.
Precautions for Correct Use

MK-S(X)
11
Warranty and Application Considerations
Read and Understand this Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or
other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE
PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,
INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE
MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of
products in the customer's application or use of the products.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.
Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT
ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.
Disclaimers
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a
warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application
requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No. J175-E1-01
OMRONIndustrial Automation Global: www.ia.omron.com Printed in Japan
0908
OMRON Corporation
Industrial Automation Company
Regional Headquarters
OMRON EUROPE B.V.
Wegalaan 67-69-2132 JD Hoofddorp
The Netherlands
Tel: [phone]/Fax: [phone]
OMRON ELECTRONICS LLC
One Commerce Drive Schaumburg,
IL 60173-5302 U.S.A.
Tel: [phone]/Fax: [phone]
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08(Lobby 2),
Alexandra Technopark, Singapore 119967
Tel: [phone]/Fax: [phone]
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong NewArea, Shanghai, 200120, China
Tel: [phone]/Fax: [phone]
Control Devices Division H.Q.
Strategy PlanningDivision
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: [phone]/Fax: [phone]
© OMRONCorporation 2008All Rights Reserved.