General Purpose Power Relays

MKS-X

9

Safety Precautions

Be sure to read the precautions and information common to all electromechanical relays, contained in the Technical User’s Guide,

“Electromechanical Relays, Technical Information” for correct use.

Precautions for Correct Use

Installation

• Models for DC loads (i.e., models with “X” in the model number)

have permanent magnets built into the insulating block. If a

permanent magnet or other magnetic body comes near the Relay,

magnetic interference will occur with the built-in permanent magnet

and the contact switching capacity will be decreased.

• Models for AC loads do not contain a permanent magnet.

• When mounting a P7MF-06(-D) Front-mounting Socket to a DIN

Track, attach PFP-M End Plates on both sides of the Socket to

prevent it from moving.

Gang Mounting

Conditions for mounting multiple MKS-X relays on the same DIN rail.

* Gang mounting of the Front-Mounting Sockets is not possible if the

contact carry current exceeds 10A.Provide space on both the right

and left sides of the Sockets.

The mounting pitch is given in the following diagram.

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.

• Be sure to check plarity when wiring DC coil MKS-X relays with

built-in operation indicators.

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 or P7MF-06(-D) Socket.

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.

The circuit can be checked using either of two modes.

Test Button Applications

Example: Checking operation of Relays and sequence circuits.

Socket

Relay

Rated current

of Relay

Back-Connecting

Socket

Front-Connecting

Socket

Models for

DC Loads

10A

❍❍

Models for

AC Loads

15A

❍

*

20

15

10

5

0

0

10

20

30

40

50

Mounting interval (mm)

Mounting interval

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 the

button and turning it.