Interlock Switches
Non contact Switches
Ferrogard 1, 2, 20 & 21
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.
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
3-42
Specifications
Standards
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
Safety Contact External
Fusing
Auxiliary Contact Switching
Capability
Min Initial Breakdown
Voltage
Operating Temperature
Enclosure Protection
Cable
Quick Disconnects
Case Material
Mounting
Weight (not including cable)
Electrical Life
Mechanical Life
Vibration
Shock
FRS 1
FRS 2
FRS 20
FRS 21
FRS 20
FRS 21
FRS 1
FRS 2
DC
DC
AC
AC
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
15m
0.65pF 0.2pF
1 x 10
250VAC 2A max
24VDC 1A max
<1.6A quick blow
<0.8A quick blow
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)
0.75mm
Jacket OD 5.6mm (0.22in)
0.50mm
Jacket OD 6.5mm (0.26in)
0.50mm
Jacket OD 6.5mm (0.26in)
0.50mm
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
Sensor Actuator
1 x 10
10 x 10
7g, 10 to 200Hz
50g
35g (0.08lbs) 85g (0.19lbs)
40g (0.09lbs) 85g (0.19lbs)
43g (0.09lbs) 85g (0.19lbs)
43g (0.09lbs) 85g (0.19lbs)
6
6
6
2
2
2
2
at the rated load
(18 AWG) 2 wire
(20 AWG) 4 wire
(20 AWG) 4 wire
(20 AWG) 6 wire
10m
1 x 10
6