440/450 Switch
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Electronic Vibration Switch 440 & 450 440/450 electronic switches utilize a solid state crystal accelerometer which provides an electrical output when it is deformed by the vibration forces. The output is electronically converted to a signal proportional to velocity. This signal is compared with a preset limit and triggers a solid state relay if the limit is exceeded. There are no moving parts in the 440 vibration switches except when congured with mechanical relays. While the 440 costs more than a mechanical switch, it uses the same technology as sophisticated remote monitoring systems and provides most of the capabilities of these systems at 1/3 to 1/2 the cost per monitor point. An important feature of these 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. Almost all machines experience a few seconds of high vibration during start-up before reaching operating speed. When no time delay function is included, as with mechanical switches, this start-up vibration causes a trip. Frequently, the operator turns the trip setting up until he can get through start-up. The resultant trip level is too high to afford protection at the machine’s operating speed. Three-second alarm trip delay is standard on these electronic switches. Alarm time delays are independently adjustable in the eld over a range of 2 to 15 seconds. SWITCHES Features • Built-in alarm time delay • Reduce false triggering • Velocity triggering provides protection at all frequencies • Sensitivity is not affected by rotating speed of machinery • Analog dial for setting limits • Solid state relay contacts used for alarm and/or shutdown • Field settable for N.O. or N.C. • Remote reset capability • Provision for self-test and calibration • 4-20 mA output available • Built-in transducer or optional remote transducer • Cast aluminum enclosures meet NEMA 3, 4 and 12 standards • Explosion-proof models (450 Series) available Built-in piezoelectric transducer module with integral amplier provides 2 to 1,000 Hz capability. Calibrated set point controls enable operator to set specic velocity trip points. Light comes on immediately when vibration exceeds set point (alarm or shutdown will trip after 3 second time delay). Adjustable time delay of 2-15 seconds. Factory set at 3 seconds. Test position sets in minimum set point so that any vibration will cause trip condition. Light will come on immediately, and trip will occur after duration of the time delay, proving that the complete system is operational. If test position is maintained for less than the duration of the time delay, trip will not occur, thus permitting system test without shutdown. VDE approved terminal strip accepts #12 wire. Screw adjustable clamping yoke rather than screw terminal permits easy, vibration proof connection. All hardware is captive. Each solid-state contact is independently eld settable to open on alarm (N.C.) or close on alarm (N.O.). 4.04 www.metrix1.com • info@metrix1.com • Sales & Service Tel: 281-940-1802 • Fax: 713-559-9421 • 09/09

Electronic Vibration Switch 440 & 450 Specications Weight & Dimensions No. of Trips: 440DR: TWO: One for alarm and one for shutdown. Shutdown set in in/sec (velocity model). Analog Output for Trending and Remote Indication: 440SR & 440DR: ± 10% accuracy over 4-20 mA DC range. Absolute Option: 4 mA = 0 vibration; 20 mA = Full scale range of switch. Termination load resistance, less than 450 ohms. Weight: 1.6 kg [3.5 lbs] Dimensions in mm [inches] SHUTDOWN ADJUST ALARM ADJUST ALARM LED SHUTDOWN LED SHUTDOWN DELAY SET ALARM DELAY SET Velocity Set Point: 0.1 to 1.5 in in/sec or 0.2 to 3 in/sec...

Electronic Vibration Switch 440 & 450 How To Select Special modications and options will receive an “M” number, assigned by the factory. Model 450 - Painted nish, and CSA, Class I, Div. 1, Grps B-D; Class II, Grps, E-G Model 440 - Epoxy coated NEMA 4x, and CSA Class I, Div. 2, Grps B-D except w/ mechanical relays and external transducer **Epoxy coated NEMA 4x available A 440 A B CD E - 2 FG H I A - 0 450 Single or Dual Trip/Analog Signal Output E SR = Single Trip, Analog Signal Output DR = Dual Trip, Analog Signal Output Analog Signal Output B 2 0 1 2 3 - 0 Alarm Circuit (Always 0 if A =...

Electronic Vibration Switch 440 & 450 Model 440/450 Switch Transducer Machine Remote sensors with Model 440/450. The standard 440/450 includes a built-in transducer. For some applications, a separate transducer is available as an option in place of the internal transducer. The 440 can then be mounted in any convenient location up to 1,000 feet away. The 440/450 can be congured for a single remote sensor input, from a variety of sensor types or transmitters. Single or Dual Trip Switches Provide Early Warning The Model 440SR provides a single switch closure which can be used for alarm or...

Electronic Vibration Switch 440 & 450 Mating Connector/Cable Assemblies Available Transducers SA6200A Accelerometer, available with two pin MS style connector or integrated cable. Replaces 160 A & E. See pg 2.01. 7295-002 Accelerometer EP Housing, provides physical protection and access to 1/4”-28 mount accelerometers. See pg 2.25. 8978-111-XXXX, Splashproof Cable Assembly* Two (2) pin socket connector with integral, molded splash proof boot with 6.4 mm (0.25”) diameter polyurethane jacketed cable with twisted shielded pair wires. xxx.x = Cable length in meters. 9334-111-XXXX-YYYY,...