Ffeuk 3171MR Скачать руководство пользователя страница 1

Страница: 1 / 8

Weatherproof Vibration Switch

Types 3171MR and 3171S

Installation and Operating

Manual

1. Introduction

The type 3171 is a low-cost, vibration-sensitive, safety switch for the protection of rotating and

reciprocating machinery. It is adjusted to operate above the machine's normal running levels of

vibration, activating machine shut-down circuits and/or alarms and to switch off the machine

before catastrophic failure.

The switch detects vibration in all directions. Unbalanced forces created by failing machinery

contain both the fundamental frequency and harmonics. The switch responds by shutting off the

machine if any components of vibration exceed the set value.

The switch operates as follows:

• Mounted vertically on a vibrating machine, a steel ball is held by a permanent magnet into

a conical seat

• If the vibration of the machine is sufficient to cause the ball to detach from the magnetic

field of the magnet, it trips a latched lever, thus releasing a micro switch plunger so the

machine can be stopped

• In type 3171MR, the ball and lever are latched by pressing the reset button manually

• In type 3171S, the ball and lever are latched by actuating a solenoid remotely, using an

electrical signal or by pressing the reset button manually

• The SET LEVEL of the vibration switch is set by adjusting the gap between permanent

magnet and ball.

Consult the FFE website at www.ffeuk.com for the latest information on applications and any

new warnings that may affect installation or safety.

Содержание 3171MR

Страница 1: ...ion exceed the set value The switch operates as follows Mounted vertically on a vibrating machine a steel ball is held by a permanent magnet into a conical seat If the vibration of the machine is suff...

Страница 2: ...regulations require that the solenoid supply have its own isolation device and also must be identified both at the isolation device and vibration switch The solenoid supply must be fused at a maximum...

Страница 3: ...Introduction Do not exceed the switch contact ratings The primary switching circuit is rated at 5 Amp maximum and must be fused appropriately in line with the protected machine s mains supply and isol...

Страница 4: ...tails To avoid breaking the lid hinge DO NOT push on the lid when fully open Figure 3 Electrical Installation Tie wrap wires to protect against vibration and using cable ties rated for expected ambien...

Страница 5: ...5 Figure 4 Wiring Configuration Switches are shown in their reset state x4 3mm hex 1Nm max Check lever moves freely up and down Figure 5...

Страница 6: ...N N Advance SET LEVEL SCREW steadily 1 2 turn Reset switch Reset Machine 5 Set up Sequence No adjustment is needed if the vibration switch has been ordered preset for your application Otherwise the vi...

Страница 7: ...referring to the calibration curve in figure 6 and counting the number of turns from the factory setting If the factory setting is lost it can be approximated as 11 5 turns from flush Figure 6 Vibrat...

Страница 8: ...vibration switch repeat set up sequence section 5 7 Maintenance There are no user serviceable parts inside the vibration switch Maintenance is not required except for periodic external visual inspecti...