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440 & 450 ELECTRONIC VIBRATION SWITCHES
Installation Manual
Doc#
90018-031 • REV L (April 2016)
1. OVERVIEW
1.1 Introduction
The single setpoint models (SR) contain one
trip limit for shutdown. The optional dual
setpoint models (DR) contain two indepen-
dent trip limits; one for alarm and one for
shutdown. Shutdown and alarm limits are
in engineering units of velocity. In addition,
a 4-20 mA output proportional to vibration
velocity is provided.
Models 440 and 450 use identical design
and differ only in the enclosure. The model
440 is designed to be used in non-hazardous
or non-incendive hazardous location (Class
I, Division 2, Groups B, C, D, and NEMA
4X). The model 450 is designed to meet
explosion-proof requirements for Class
I, Division 1, Groups B, C, D installations.
Unless otherwise noted, all discussions and
diagrams herein assume the model 440, but
apply equally to the model 450.
1.2 Key Capabilities
•
Shutdown and alarm settings are based
on vibration severity. The internal sen-
sor (unless the external sensor option
has been specified (Ordering Option
I=5 – see note in Section 5.4) is a piezo-
electric crystal with built in microelec-
tronics to reduce noise sensitivity. The
output signal is electronically integrat-
ed to measure and trip on velocity.
•
Calibrated setpoint controls permit set-
point adjustment of vibration velocity
levels up to full scale range. DR model
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Table of Contents
Related Manuals for Metrix 440
Summary of Contents for Metrix 440
- Page 1 Models 440 and 450 use identical design and differ only in the enclosure. The model 440 is designed to be used in non-hazardous or non-incendive hazardous location (Class I, Division 2, Groups B, C, D, and NEMA 4X).
- Page 2 Key Capabilities (continued) switches have dual setpoints – one for alarm and one for shutdown – that are indepen- dently adjustable. • 4-20 mA output provides a convenient interface for trending and displaying vibration amplitude in a programmable logic controller (PLC), SCADA system, data logger, or oth- er instrumentation.
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Page 3: Specifications
Refer to product datasheet 1004730, available online at www.metrixvibration.com. 3. SAFETY WARNINGS CAUTION - SHOCK HAZARD 230/110 VOLTS The terminal block inside the 440 is connected to AC power (110 VAC or 230 VAC depending on model) except DC input power models. -
Page 4: Mechanical Installation
4. MECHANICAL INSTALLATION 4.1 Where to Mount the Switch It is desirable to mount the electronic switch (or transducers for switches with external transducer option) on a bearing housing, since the forces generated by the rotating parts through unbalance, misalignment, bearing wear, etc., are transmitted to the machine’s cas- ing through the bearings. - Page 5 4.3 Choosing Mounting Orientation The vibration switch can be mounted in the vertical or horizontal orientation (or anything in between) without a change in its sensitivity. Ideally, the mounting orientation will be chosen by measuring the vibration levels in both directions with a vibration meter and then select- ing the direction in which the highest vibration occurs.
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Page 6: Electrical Installation
In installations where temperature and humidity conditions vary around the dew point, it is important that the cover be evenly and firmly fastened down with the four screws provided (model 440) or via the threaded cover (model 450). Although the switch enclosures meet NEMA standards for water tightness, this assumes the cover is properly seated and wiring/conduit entrances use proper seals. - Page 7 The analog switch does not require the 50 mA holding current of a triac and operates equally well with AC or DC. Consult Metrix product datasheet 1004730 for comprehensive specifications pertaining to FET outputs.
- Page 8 5.2.4 Units with Electromechanical Relay Outputs (ordering options D and/or E = 4) Electromechanical relays are also available and represent the most flexible type of output. They are a good choice for a variety of applications. Consult Metrix product datasheet 1004730 for comprehensive specifications pertaining to relay outputs. 5.2.5 Open/Close on Alarm The alarm and shutdown triacs (or analog switches) are independently field settable for N.O.
- Page 9 5.3.1 Light Loads The solid state triacs used in the standard 440 series are a special high transient immunity, medium power type. Off state leakage is 1 mA max and should not create any problems, even when interfaced with a load as light as a programmable controller.
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Page 10: Control Settings
Warning Level Guide 6.2 Setting of Time Delay An important feature of Model 440/450 switches is the built-in time delay. This prevents triggering of the alarm or shutdown functions from transient increases in vibration levels. It also avoids shutdown due to transitory vibrations occurring during start-up. - Page 11 The time that the vibration amplitude must persist above a setpoint before the discrete out- put changes state is individually adjustable for shutdown and alarm from 2 to 15 seconds. To readjust the time delay, turn the shutdown setpoint (or alarm setpoint for alarm time delay) knob CCW until the LED illuminates.
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Page 12: Outline And Dimensions
7. OUTLINE & DIMENSIONS 440 Model Units: mm [in] Doc# Page 12 of 16 90018-031 • REV L (April 2016) - Page 13 450 Model Units: mm [in] Doc# Page 13 of 16 90018-031 • REV L (April 2016)
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Page 14: Wiring Diagrams
8. WIRING DIAGRAMS These diagrams depict connections for models with all options present. Not all connections may be available on your specific switch(es), depending on whether optional features were specified at time of ordering. Doc# Page 14 of 16 90018-031 • REV L (April 2016) - Page 15 Doc# Page 15 of 16 90018-031 • REV L (April 2016)
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Page 16: Environmental Information
WEEE) should never be disposed of in the public waste stream. The “Crossed-Out Waste Bin” label affixed to this product is a reminder to dispose of this product in accordance with local WEEE regulations. If you have questions about the disposal pro- cess, please contact Metrix Customer Services. info@metrixvibration.com www.metrixvibration.com 8824 Fallbrook Dr.
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