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ROLLER LIMIT SWITCH

TECHNICAL SPECIFICATIONS

Conforming to standards: CEI EN 60947-1, CEI EN 60947-5-1, CEI EN 60529, CEI EN 60204-1

Certifications: CE

All metal shell: zamak

Ambient temperature: Storing –40°C +70°C

Ambient temperature: Working –20°C +70°C

Protection level: IP 65 according to CEI EN 60529

Insulation class: Class I according to IEC 536

Cable input: n° 3 threaded holes PG 13,5

TECHNICAL SPECIFICATIONS OF THE CONTACT ELEMENTS

Certifications: CE, CSA, UL, IMQ, UTE, VDE, ASE.

Nominal thermic current: 10A according to CEI EN 60947-5-1

Nominal insulating voltage: 300V~ (CEI EN 60947-5-1)

Mechanical duration: 10.000.000 maneuver (10⁷ cycles)

Maneuver frequency: 50¸60 man. each minute (up to 1 Hz)

Identification of terminals: According to CENELEC EN 50013

Protection against short circuits: cartridge fuse 10A according to CEI EN 60947-5-1

Connecting capacity (max. wire section): 1x2,5mm² or 2x1,5mm²

Fast kick silver contacts

Maximum working voltage 500V~

Nominal magnitude of current: 16A at 250V~

Fast kick silver contacts

FASTON or screw type (standard) connections

Art. 291 - ROLLER LIMIT SWITCH

The roller components are a metal pipe (Æ30 x 120 mm, tropicalised) fitted on a metal rod (Æ6 mm, tropicalised) by ball bearings.

Roller limit switch is fitted with 2 microswitches (1NO+1NC for every position). On request it can be fitted with 4 microswitches (2NO+2NC for every position).

FUNCTIONING:

Limit switch for conveyor belt shift monitoring.

When the lever is turned 10° the “alarm” function is triggered.

When the lever is turned 18° the conveyor belt is stopped.

Conveyor belt max speed has to be not greater than 4m/s.

Microswitches are pre-pushed when the limit switch is in rest position (angle 0°) so that in case of head breaking (due to exceptional events) the microswitches automatically stop the conveyor belt.

Wiring	Picture	Angle	Triggered microswitch
		10°	A
		18°	B
		10°	B
		18°	A

E-Mail: stz@stzsrl.it

S.T.Z. s.r.l.

Strada delle Brigole n° 2/A

23877 Paderno d’Adda (LC) Italy

Tel: 0039 039 514038

Fax: 0039 039 514044