Intrinsically safe emergency switch KFS-5/i - Kopex Electric Systems ...

Intrinsically safe emergency switch
KFS-5/i (KFS-5/n)

CHARACTERISTIC
FEATURES
The KFS-5/i type emergency switch is suitable to stop
and lockout machines and devices in emergency.
Its basic application is cooperation with automatics
system of belt conveyors in order to enable to stop
the conveyor in emergency from any place along the
route. It’s assigned for work inside intrinsically safe
circuits and it may be used inside mine underground
rooms with the „a”, „b” & „c” explosion hazard grade or
with the „A” or „B” coal dust explosion hazard class.
The KFS-5/i switch fully substitutes the KFS-5 one.
This switch is used e.g. in USPP systems together
with the ZLS-1, ZLS-2, ZLS-3 or ZLS-2i, ZLS-2w units
in the USPP circuit with the ZS-05 unit.
„ZEG” S.A. produces also the KFS-5/n type emergency
switches, suitable for work in the circuits
with the voltage up to 250 V AC/DC and they may
be used inside underground methane-free mine
excavations or rooms classifi ed as the „a” explosion
hazard grade ones as well as in the surface
factories of different industry branches.
KFS-5/n
www.kessa.com.pl
e-mail: poczta@kessa.com.pl
FUNCTIONAL
DESCRIPTION
The conveyor belt sliding aside starts to rub against
contact strip and causes its warming-up. The strip
temperature is continuously measured by the gauge
head and this value is converted to a digital electric
signal sent to microprocessor. After proper processing
this signal from microprocessor is delivered through
the RS485 connector to output terminals, and then
through proper cable it can be sent to superior device
that controls work of single conveyor or entire haulage
system.
The ICT-1p sensor differs from the ICT-1 one with the
built-in, microprocessor-controlled relay only. The relay
operating contacts are connected to output terminals.
The built-in relay enables additional sensor applications:
the contact may be placed wherever is necessary
to deliver a two-status information and also a galvanic
separation from the measurement circuit is
required,
when using proper software the sensor can work
independently and its contact may be located directly
in the conveyor control circuit.
Temperature sensors are installed at conveyor’s sore
points: drive, turning station, loop-shaped belt dispenser.
The conveyor manufacturers make in such
points, under side shields, proper diameter holes suitable
for installation of such sensors.
Kopex Electric Systems S.A.
ul. Opolska 19, 41- 500 Chorzów
tel.: +48 32 249 94 80
fax: +48 32 241 34 57
serwis: +48 601 462 818

TECHNICAL DATA
Type KFS-5/i (KFS-5/n)
Contacts number & type 2contactors x NO / 2contactors xi NC
Force required to lockout the switch 80 ÷ 120 N
Force required to unlock the switch 50 ÷ 90 N
Rated switching parameters
Ue/Ie=240 V / 3 A or 120 V / 6 A in user’s category AC-15
Ue/Ie=250 V/0,1 A or 125 V/0,22 A in user’s category DC-13
Working conditions:
– temperature -20ºC ÷ 40ºC
– relative humidity 93 % w temp. 40ºC
Sinusoidal vibrations (10 ÷ 55) Hz / amplitude ≤ 0,35mm
Enviromental Protection IP65
External Dimensions: (made with glands) (made with inlets)
– length 265mm 265mm
– width 298mm 333mm
– height 220mm 220mm
Weight 9,4kg 10,3kg
KFS-5/i
Contact number & type 2 contactors NO / 2 contactors NC
Force required to lockout the switch 80 ÷ 120N
Force required to unlock the switch 50 ÷ 90N
Switching capacity, intrinsically safe circuits,
cat. ia, ib
30 V AC/DC
Maximum cable wire section 4mm2 Number of M32 x 1,5 glands 2pcs
Number of M32 x 1,5 inlets 2pcs
Working conditions:
- temperature -20 ºC ÷ 40 ºC
- relative humidity 93 % at temp. 40 ºC
Sinusoidal vibrations (10 ÷ 55) Hz / amplitude ≤ 0,35mm
Enviromental Protection IP54
External Dimensions (made with glands) (made with inlets)
length 265mm 265mm
width 298mm 333mm
height 220mm 220mm
Weight 9,4kg 10,3kg
KFS-5/i (KFS-5/n)

SCHEMATIC DIAGRAM
ANTI-EXPLOSION MARK
IM1 Ex ia I
WE type testing certifi cate: KDB 04 ATEX 021
VERSION 1 VERSION 2