Introduction; General Features - PCB Piezotronics IMI SENSORS 686 Series Installation And Operating Manual

Introduction

The 686-Series Smart Vibration Switch is a low-cost electronic vibration switch designed to monitor vibration
levels on rotating machinery (ie. fans and cooling towers) and trip an alarm or shut down machinery when a
specified vibration limit is exceeded. An onboard accelerometer with precision, microprocessor-controlled
electronics ensures reliable operation and accuracy. The switch contains a two-pin MIL connector for easy drop-
in replacement of mechanical vibration switches and a reliable solid state relay. Multiple units can be installed in a
loop configuration for economical installation and expanded protection of critical machinery. This versatile switch
can be used to replace more expensive electronic vibration switches where separate vibration output is not
required and to replace troublesome mechanical vibration switches.
Every Smart Switch is factory-programmed. See Page 28 for more information.

General Features


Fully USB-programmable from any PC (with optional USB Programmer Kit).

Hermetically-sealed, stainless steel housing for use in corrosive environments.

Imbedded piezoelectric accelerometer for improved accuracy and frequency response.

Small footprint and single ¼-28 stud mounting.

Solid state (AC/DC) relay.

Universal AC or DC power.

Magnetically Adjustable Vibration Threshold (MAVT™).

Connects with industry standard MIL-C-5015 connector or integral cable.

Programmable features
o
Alarm threshold level
o
Normally Open (NO) or Normally Closed (NC) relay
o
Latching or non-latching relay
o
Delays

Power on

Startup

Operational
o
Residual vibration level

Intrinsically-safe versions available (EX prefix)
o
CSA
PAGE 3