Ravioli Rotary limit switches

Worm drive switches, double insulating box.
Application of encoders and other position sensors.
Additional accessories

Ravioli rotary limit switch FRM Series

Main features
The rotary limit switch is a device which allows you to control the movement
of industrial and building machines.
The shaft is connected to the motor, so that, after a precise number of turns,
the cams cause the intervention of the internal contacts.
The innovative and thorough regulation of the cams allows you to set the
microswitches working point linearly and micrometrically.
FRM limit switch is equipped with 3 internal rotation axes, whose
ratios for each exit can be different.
A forth rotation axis is available for the application of a speed reader.
Ratios range from 1:1 up to 1:900, and the application of encoders,
potentiometers or some other sensors in addition to the group
of microswitches, realizes in the same device an analogic or digital output,
which can be properly read.
Contacts are positive-opening (EN 60947-5-1), which improves the worker’s safe.
The series ranges several accessories, such as cog wheels, male shafts,
flexible shafts, flanges, internal connections plates.
Ravioli is focusing its activity on products in the respect of people,
following the standards which are defined in its Code of Ethic Behaviour.
Such products have been studied in order to improve the workers’ safety,
and they do not contain any substances which is harmful for the environment.

Technical features

Insulation voltage	250V~
Maximum operating voltage	250V~
Black lower casing	reinforced nylon
Yellow cover	termoplastic, high mechanical and thermical resistance
Operating temperature	- 20 °C + 60 °C - 40 °C + 60 °C (on demand)
Drive	worm screws
Cable entries	standard: 2 glands M20×1,5 Options: more glands
Protection degree	IP 66 EN 60529
Protection against contact voltages	double insulation EN 60439-1
Max. rotation speed	500 rpm
Homologation	CE UL - (c)UL execution on demand
Weight	approximately 800 g
Product	made in Italy

For years Ravioli has been focusing its production on renewable energy.
Driver FRM limit switches, which are also used in the wind turbines
and solar tracks, are included in our Green e-motion Program.
They represent a significant step in our project and our participation
to the sustainability.
Driver FRM limit switches are in accordance to the following Norms:
2006/42/CE Machine Directive
2006/95/CE Low Voltage Directive
2002/95/CE RoHS Directive
1907/2006 REACH
EN 60947-1 Low-voltagwe switchgears and controls gears
EN 60947-5-1 Control circuit devices
EN 60204-1 Safety of machinery
EN 60529 Protection degrees
UL 508 Industrial control equipment

Driver FRM limit switches are guaranteed by our EC Certificate of Conformity,
available upon request, where it is declared that such product has been
manufactured by Ravioli in accordance to defined and acknowledged
Safety Regulations, and in compliance with the
Quality standards stated in our ISO 901-2008 Quality System Certificate.

Ravioli rotary limit switch FCN Series

The rotary limit switch is a device which allows you to control the
movement of industrial and building machines.
The shaft is connected to the motor, so that, after a certain number of turns,
the cams make the switches work, and then they can carry out their pre-set manoeuvre.
The range of FCN rotary limit switches has been planned with a particular
internal symmetry that allows you to have a series of 5 microswitches (on-off exits)
as well as some other linear exits, and a potentiometer in the same box.
The innovative and thorough regulation of the cams allows you to set
the microswitches working point linearly and micrometrically.
Reduction ratios range turns out to be remarkably large, since microswitches
can be fitted with guaranteed opening (EN 60947-5-1) as well as deviation
or progressive double opening contacts. The choice of different cam
profiles allows you to modify the limit switches function diagram.

Standard Execution

1: 7.5 rotations
1: 15 rotations
1: 25 rotations
1: 35 rotations
1: 50 rotations
1: 60 rotations
1: 100 rotations
1: 140 rotations
1: 200 rotations
1: 275 rotations
1: 400 rotations
1: 550 rotations

Upon request it is possible for us to transmit you some data concerning
all the real turns according to the different availabletypes of cams.
Standard executions are provided with 2 or even
Limit switches with 3 and 5 contacts can also be realized uponrequest
and according to the necessary quantity.
Upon request it is possible for us to transmit you some data concerning
all the real turns according to the different availabletypes of cams.
Standard executions are provided with 2 or even
Limit switches with 3 and 5 contacts can also be realized
uponrequest and according to the necessary quantity.

Customized switches

FCN limit switches can be customized according to the order quantity.
Specific customizations:
- shafts cut to measure
- twin-shaft execution
- cable entry in frontal or lateral position
- different contacts
- regulation cams with different profiles
- measuring accessories, such as potentiometers or encoders
- customized nameplates

Pos	Code	Description
1	B50454 B50442 B50447	Cover 2 - 3 contacts Cover 4 contacts Cover 5 contacts
2	BLEVFCNA BLEVFCNB BLEVFCNC BLEVFCND	White cam A Grey cam B Red cam C White cam D
3	BFCNAPINT BFCNDINT BAPO2PRFC BAP11FC	Contact 1NC slow (P) Contact 1NO 1NC quick (D) Contact 2NC progressive slow (M) Contact 1NO 1NC slow (MD)

	Code	Description
4	BMOD5FC BMOD6FC BMOD8FC BMOD10FC BMOD14FC	Cog wheel mod 5 Cog wheel mod 6 Cog wheel mod 8 Cog wheel mod 10 Cog wheel mod 14	Z12 Z11 Z12 Z12 Z10
5	BINNFC	Male connection
6	BAFLESFC	Flexible shaft
7	BFLANFCN	Attachment flange
8	--------	Potentiometer
9	--------	Encoder on demand

Ravioli rotary limit switch FCR Series

The worm drive limit switches FCR are particulary suitable for controlling
the stops of the lifting electric circuits on building cranes and bridge cranes.
The range includes, among the others, the limit switches equipped
with up to 4 microswitches and respective adjustable cams, profile
type 1 (standard - white coloured).
On request two other types of cams are available:
the profile type 2 (grey coloured) or type 3 (red coloured).
They are essential in any particular case to modify the operation chart.
The worm drive limit switches are furthermore supplied in two different versions:
either with slow guaranteed opening switches (CEI 17.12 chapter 492)
or with changeover quick break switches.
The outer casing is made of termoplastic material with high
mechanical and temperature variation resistance.

ROTATIONS	MICROSWITCHES WITH GUARANTEED OPENING CODES
RATIO	2 CONTAS	4 CONTACS
1:25	BF25AP2	BF25AP4
1:50	BF50AP2	BF50AP4
1:100	BF100AP2	BF100AP4
1:175	BF175AP2	BF175AP4
ROTATIONS	MICROSWITCHESWITH GUARANTEED OPENING CODES
RATIO	2 CONTACS	4 CONTACTS
1:25	BF25-2	BF25-4
1:50	BF50-2	BF50-4
1:100	BF100-2	BF100-4
1:175	BF175-2	BF175-4

Ravioli rotary limit switch FRS Series

Driver rotary limit switch FRS is a device with IP65 protection
degree which allows you to control the movement of industrial
and building machines. The shaft is connected to the motor, so that,
after a certain number of turns, the cams make the switches work,
and then they can carry out their pre-set manoeuvre.
The easy and thorough regulation of the cams allows you to set the rapid
trip microswitches working point linearly and micrometrically.
The choice of different cam profiles allows you to modify
the limit switches function diagram.

The range
Standard executions have the following reduction ratios:

You can ask for some data about all the real turns according to
thedifferent available types of cams