Interlock Switches
Non contact Switches
Ferrogard 1, 2, 20 & 21
Specifications
Standards
EN954-1, ISO13849-1, IEC/EN60204-1,
NFPA79, EN1088, ISO14119,
ANSI B11.19, AS4024.1
Cat. 1 Device per EN954-1
Dual channel interlocks suitable for Cat.
3 or 4 systems
CE marked for all applicable directives
and cULus
Safety Auxiliary
12mm (0.47in) 15mm (0.59in)
23mm (0.91in) 26mm (1.02in)
3.0ms 0.5ms
2.1ms 0.3ms
0.7ms 0.7ms
15mΩ
0.65pF 0.2pF
1 x 10
6
Ω
1 x 10
6
Ω
10mΩ
Category
Approvals
Reed Contacts
Operating Distance – Make
Operating Distance – Break
Closing Time
Dropout Time
Bounce Time
Initial Contact Resistance
Initial Capacitance, Terminal
to Terminal
Initial Insulation Resistance,
Terminal to Terminal
Safety Contact Switching
Capability
Description
The Ferrogard range of magnetically actuated safety switches offers
Non contact reliability together with tolerance to misalignment. They
are designed to be installed so that when a guard door is opened, the
action of the magnetic actuator being removed from the switch
opens the N.C. safety contacts which are intended for the isolation
of control power to a machine primary control element.
The FRS1, FRS2, FRS20, FRS21 are rectangular housings. Sealed to
IP67 (NEMA6P), these Ferrogards are ideal for wet environments.
Unlike some magnetic switches the Ferrogards have protected safety
contacts to help ensure that they do not fail to danger. In addition,
some versions have independent auxiliary signal contacts to indicate
the guard condition.
All Ferrogards have internal non-resettable overload protection on
the safety contact. They should be protected by an external fuse
rated as shown in the Specifications table.
AC 250VAC 2A max
DC 24VDC 1A max
Safety Contact External
Fusing
AC <1.6A quick blow
DC <0.8A quick blow
Auxiliary Contact Switching
Capability
Min Initial Breakdown
Voltage
Operating Temperature
Enclosure Protection
Cable
FRS 1
FRS 2
FRS 20
FRS 21
Quick Disconnects
Case Material
Mounting
0.75mm
2
(18 AWG) 2 wire
Jacket OD 5.6mm (0.22in)
0.50mm
2
(20 AWG) 4 wire
Jacket OD 6.5mm (0.26in)
0.50mm
2
(20 AWG) 4 wire
Jacket OD 6.5mm (0.26in)
0.50mm
2
(20 AWG) 6 wire
Jacket OD 7.5mm (0.3in)
M12 x 1, 4 pin or 6 pin
Red moulded ABS Plastic
Any position
M4 mounting security screws included
300VDC, 250VAC, 0.5A including inrush
15VA/10W suitable for AC/DC circuits
600VAC 600VAC
-10°C to +65°C (14° to 149°F)
IP67 (NEMA6P)
Features
•
•
•
•
•
Non contact actuation
High tolerance to misalignment
High switching current (up to 2A AC, 1A DC)
Plastic rectangular housing (IP67)
Cable or Quick Disconnect (QD) connections
Weight (not including cable) Sensor Actuator
FRS 1 35g (0.08lbs) 85g (0.19lbs)
FRS 2 40g (0.09lbs) 85g (0.19lbs)
FRS 20 43g (0.09lbs) 85g (0.19lbs)
FRS 21 43g (0.09lbs) 85g (0.19lbs)
Electrical Life
Mechanical Life
Vibration
Shock
1 x 10
6
at the rated load
10 x 10
6
7g, 10 to 200Hz
50g
3-42
Interlock Switches
Non contact Switches
Ferrogard 1, 2, 20 & 21
Product Selection
Safety Contact
Switching Capability
Safety
Contacts
Auxiliary
Contacts
Connection
2m Cable
4m Cable
None
6m Cable
8m Cable
10m Cable
2m Cable
1 N.C.
4m Cable
6m Cable
1 N.O.
250V AC 2A
8m Cable
10m Cable
15m Cable
20m Cable
4 Pin Micro QD
4m Cable
None
4 Pin Micro QD
2m Cable
2 N.C.
1 N.O.
4m Cable
6m Cable
10m Cable
6 Pin Micro QD
1 N.C.
1 N.O.
None
24V DC 1A
2 N.C.
1 N.O.
2m Cable
4 Pin Micro QD
4 Pin Micro QD
2m Cable
4m Cable
6m Cable
6 Pin Micro QD
Mating cable, 4-pin straight 2m. See page 15-10 for details and additional lengths.
Mating cable, 4-pin straight 5m. See page 15-10 for details and additional lengths.
Mating cable, 4-pin straight 10m. See page 15-10 for details and additional lengths.
Mating cable, 6-pin straight 2m. See page 15-11 for details and additional lengths.
Mating cable, 6-pin straight 5m. See page 15-11 for details and additional lengths.
Mating cable, 6-pin straight 10m. See page 15-11 for details and additional lengths.
Note:
Contacts are described with the guard door closed, that is, actuator in place. Switch is shipped complete with actuator.
Housing
Material
Type
Catalogue Number
440N-G02001
440N-G02004
FRS 1
440N-G02022
440N-G02041
440N-G02015
440N-G02002
440N-G02014
440N-G02038
FRS 2
440N-G02033
440N-G02019
440N-G02043
440N-G02040
440N-G02093
ABS Plastic
FRS 20
440N-G02085
440N-G02097
440N-G02055
440N-G02061
FRS 21
440N-G02060
440N-G02059
440N-G02098
FRS 2
FRS 20
440N-G02092
440N-G02094
440N-G02090
440N-G02058
440N-G02077
FRS 21
440N-G02083
440N-G02099
889D-F4AC-2
889D-F4AC-5
889D-F4AC-10
889R-F6ACA-2
889R-F6ACA-5
889R-F6ACA-10
Accessories
Description
Replacement Actuator
Page Number
—
Catalogue Number
440N-A02005
3-43
Interlock Switches
Non contact Switches
Ferrogard 1, 2, 20 & 21
Application Details
Operating Principle
Encapsulated in the Ferrogard is a unique high power industrial reed,
capable of switching up to 15A. The need switch is de-rated by a
non resettable overload protection fuse. On presenting the actuator
to the switch, the high intensity magnetic field from the actuator
causes the contacts to close. On removing the actuator (opening
the door), the safety contacts open.
Typical Operating Curve
10 (0.39)
When the actuator is aligned with the switch, the
sensing distance is 10mm (0.39.) As the amount of
misalignment increases, the sensing distance
decreases. Beyond 4mm (0.16), the switch will not
actuate in the presence of the actuator.
4 (0.16)
4 (0.16)
Misalignment tolerance on
nonferrous materials
3-45
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