3-42

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

Specifications

Standards

EN954-1, ISO13849-1, IEC/EN60204-1,

NFPA79, EN1088, ISO14119,

ANSI B11.19, AS4024.1

Category

Cat. 1 Device per EN954-1

Dual channel interlocks suitable for Cat.

3 or 4 systems

Approvals

CE marked for all applicable directives

and cULus

Reed Contacts

Safety Auxiliary

Operating Distance – Make

12mm (0.47in) 15mm (0.59in)

Operating Distance – Break

23mm (0.91in) 26mm (1.02in)

Closing Time

3.0ms 0.5ms

Dropout Time

2.1ms 0.3ms

Bounce Time

0.7ms 0.7ms

Initial Contact Resistance

15m

Ω

10m

Ω

Initial Capacitance, Terminal

to Terminal

0.65pF 0.2pF

Initial Insulation Resistance,

Terminal to Terminal

Ω

Ω

Safety Contact Switching

Capability

AC

DC

250VAC 2A max

24VDC 1A max

Safety Contact External

Fusing

AC

DC

<1.6A quick blow

<0.8A quick blow

Auxiliary Contact Switching

Capability

300VDC, 250VAC, 0.5A including inrush

15VA/10W suitable for AC/DC circuits

Min Initial Breakdown

Voltage

600VAC 600VAC

Operating Temperature

-10°C to +65°C (14° to 149°F)

Enclosure Protection

IP67 (NEMA6P)

Cable

FRS 1

Jacket OD 5.6mm (0.22in)

FRS 2

Jacket OD 6.5mm (0.26in)

FRS 20

Jacket OD 6.5mm (0.26in)

FRS 21

Jacket OD 7.5mm (0.3in)

Quick Disconnects

M12 x 1, 4 pin or 6 pin

Case Material

Red moulded ABS Plastic

Mounting

Any position

M4 mounting security screws included

Weight (not including cable)

FRS 1

FRS 2

FRS 20

FRS 21

Sensor Actuator

35g (0.08lbs) 85g (0.19lbs)

40g (0.09lbs) 85g (0.19lbs)

43g (0.09lbs) 85g (0.19lbs)

43g (0.09lbs) 85g (0.19lbs)

Electrical Life

Mechanical Life

Vibration

7g, 10 to 200Hz

Shock

50g