Published May 12, 2020

* The specifications in this document are subject to change without notice. For the latest specifications, please contact our local representative.

European Office:

Mergenthalerallee 10-12, 65760 Eschborn, Germany

Tel: +49 6196 400 -189 ( English, German )

www.nkkswitches.eu E-mail: contact@nkkswitches.eu

FF01 Series Low Profile E-STOP Switches

Safety Precautions

Caution in Use

Usage Environment

Routine Care

Installing the Switch

• When the product is installed on other equipment, be sure usage

is in compliance with all applicable standards and regulations

in the country or region, as required for the system, machine, or

facility.

• Be sure to read the instruction manual and catalog before

installing, wiring, operating, maintaining, or inspecting the

product.

Before using the product

• Do not use a power supply that exceeds the rated voltage or

current indicated in the specifications. Using a power supply that

exceeds ratings may cause overheating or fire.

• Use wires of appropriate rating. Use of improper wires may

cause overheating and fire.

• Follow recommended “Mounting Panel Cutout” dimensions and

installation instruction, or switch may be fixed loose and not

operate properly.

• Remove dirt and dust from the switch mounting surface of the

panel before installation.

• Do not disassemble the product as it may cause electric shock,

fire, or malfunctions.

• Confirm power is off before installation, wiring, maintenance,

or inspections. Failure to do so may cause electric shock, fire, or

malfunctions.

• Operate the product by hand only. Do not operate using foot,

tool, or other objects.

• Chattering and bouncing

Bouncing may occur during a reset operarion (pull or turn to

reset). Chattering may occur if the equipment the switch is

mounted on is subjected to shock or vibration. Take appropriate

measures to prevent chattering and bouncing on the equipment

side.

• Safeguard against excessive shock or vibration, such as

dropping. Excessive shock and vibration may result in

deformation, damage, degraded performance, or failure.

Soldering

• After inserting the lead wire into the terminal hole, use a

soldering iron to ensure a secure connection.

Incomplete soldering may cause overheating and fire during use.

• Note that if soldering is performed while the terminal is facing

up, the flux may enter the interior of the switch. Perform soldering

carefully.

• The solder resistant temperature is 390°C. Complete the

soldering within four seconds.

• The product is designed for indoor use.

• Do not install in locations subject to frequent splashing water.

• If the product becomes wet, wipe off with a dry cloth. Using a

switch exposed to water may result in water entering inside. If the

water freezes inside the switch, it may not function properly.

• When using the product in environments subject to accumulations

of dust and dirt, remove such accumulations from the area around

the switch before use. Accumulated dust and dirt, may affect

switch function.

• Use a dry cloth to wipe dirt from the actuator. If the actuator

is very dirty, wipe with a cloth dampened with a small amount

of neutral detergent, then wipe dry. (Actuator material: Fiber-

reinforced PBT)

(1) Remove the round nut from the switch main body.

(2) With the notch in the O-ring aligned with the anti-rotation tab

on the switch main body, insert the switch body into panel. In

this step, align the anti-rotation tab on the switch main body

with the anti-rotation keyway on the panel.

(3) Using the fixing nut wrench (AT119), tighten the round nut

from the back side of the panel to the recommended tightening

torque of 785 mN·m.

Anti - rotation Tab

on Switch Body

Notch on

O-ring

Anti - rotation

Keyway on Panel