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Interlock Switches

Hinge Switches

Rotacam

Description

A heavy-duty hinge actuated safety interlock switch, the Rotacam shaft

can be used as, or connected to, the existing hinge pin for direct

operation of the switch. Machine power is isolated when the guard

has been opened just 5°. For applications requiring a larger degree of

operation the internal cam can be adjusted from 5° to 11°.

Note:

After adjustment, the cam must be secured in position with the

supplied cam locking pin to ensure optimal performance.

The Rotacam is available with two N.C. safety contacts and one N.O.

auxiliary contact. The switch includes the necessary safety related

functions, such as forced guided contacts and a tamper resistant

mechanism, allowing machinery to be safeguarded in compliance

with the machinery directive.

The die-cast housing is sealed to IP66 and features one M20 conduit

entry (1/2in NPT and connector style also available). Two different

shaft lengths of 30mm and 85mm can also be specified.

EX and Pneumatic styles of Rotacam are also available; see the

Explosion Proof section on page 16-1 for more information.

Features

• Can be used as a hinge pin on light and medium weight guard

doors

• Isolates power within 5° of door movement

• Degree of operation can be customized with adjustable cam

• Robust die-cast case, ideal for heavy duty applications

• Contacts, 2 N.C. & 1 N.O.

Specifications

Note: The safety contacts of the Guardmaster switches are described as normally

closed (N.C.) i.e., with the guard closed, actuator in place (where relevant) and the

machine able to be started.

Fixing Methods

Standards

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

NFPA79, EN1088, ISO14119, IEC/

EN60947-5-1, 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,

cULus, SUVA and TUV

Contact Arrangement

2 N.C. & 1 N.O. direct opening action

Utilization Cat.

AC (Ue)

(le)

DC

AC 15

500V 250V 100V

1A 2A 5A

250V 0.5A 24V 2A

Thermal Current (lth)

10A

Minimum Current

5V 5mA DC

Safety Contact Gap

>2mm (0.08in)

Rtd. Insulation Voltage

(Ui) 500V

Rtd. Impulse withstand

Voltage

(Uimp) 2500V

Shaft Rotation to Achieve

Contact Operation

11° maximum; 5° minimum, (adjustable)

Break Contact Min Force

12cNm (torque on shaft)

Max Actuation Speed

160mm per sec (6.29in)

Max Actuation Frequency

1 Cycle per sec

Case Material

Heavy duty die cast alloy

Actuator Shaft

Stainless Steel

Protection

IP66

Conduit Entry

1

Operating Temperature

-25°C to +80°C (-13°F to 176°F)

Fixing

2 x M4

Mounting

Any position

Mechanical Life

>1,000,000 operations

Electrical Life

>1,000,000 operations

Weight

420g (.926lb)

Colour

Red

Pre-Bored

The actuator shaft is pre-bored

allowing the existing hinge pin to be

utilised as the flexing point.

Solid Shaft

The solid actuator shaft can be

used as the hinge pin on certain

guards.

Roll Pin