OPERATION

MANUAL

Model 550 Series

Vibration

Switches

Includes:

550

550M

550-X

550M-X

Page 2

Model 550 Series

6.

7.

8.

SECTION TITLE

1.

INTRODUCTION.........................................................................................

2.

3.

4.

5.

FEATURES.................................................................................................

PAGE

2

3

WIRING......................................................................................................... 4

ANALOG METER.........................................................................................

4

TESTING...................................................................................................... 4

INSTALLATION........................................................................................... 5

LATCHING................................................................................................... 5

VIBRATION SETTINGS............................................................................. 6

10.

11.

12.

ENCLOSURES........................................................................................... 7

SPECIFICATIONS....................................................................................... 8

WARRANTY & SERVICE INFORMATION................................................. 8

Balm ac assumes no responsibility for errors or om issions. N either is any liability assumed for dam ages resulting from the use of the inform ation contained herein. See Balm ac W arranty and T erm s at www.balm acinc.com .

Specifications are subject to change without prior notice. Specially m odified units are supplied with individual documentation.

W AR N IN G : Exercise extrem e caution when perform ing any task on rotating machinery. Failure to do so may result in equipment dam age or personal injury. Fam iliarize yourself with the equipment before attem pting to perform any operation.

T his m anual is for B alm ac Vibration Switches M odel 550, 550M , 550-X, 550M -X.

SECTION 1 - INTRODUCTION

Description

The Balmac Series 550 (includes 550, 550M, 550-X and 550M-X) Vibration Switches are stand-alone electronic vibration detection limit switches for monitoring rotating machinery. They help prevent expensive downtime and costly equipment repairs by providing a warning limit for increasing vibration and equipment shutdown on high vibration. They guard all types of rotating machinery against excessive vibration.

The 550's provide user adjustable vibration limits, limit trip and power indicators, limit test function, solid state circuitry and a SPDT relay for each vibration limit. A 4-20 mA output signal is provided for remote metering. The 550's have an internal, single-axis vibration sensor. 550's are typically mounted directly on the machinery. The axis of sensitivity can be mounted in any direction (horizontal or vertical).

Model 550's feature NEMA 4 enclosures. Model 550-X enclosures are rated for hazardous locations.

Operation

An integral piezoelectric vibration sensor (accelerometer) provides an electrical signal when distorted by vibration. The circuit converts this signal to a calibrated vibration velocity (inches per second peak) (or millimeters per second peak for Metric units - 550M).

The 550 mounts directly to the machinery at the monitoring point in the direction of vibration measurement (vertical, horizontal, axial). The 550 is sensitive to vibration that is perpendicular to the housing’s mounting base. See “Axis of Sensitivity” label on the outside of the switch enclosure.

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Model 550 Series

SECTION 2 - FEATURES

1. G R O U N D - T erm inal screw for ground (green).

2. 4-20m A - C onnect 4-20m A m eter circ uit between this term inal and the C O M M O N term inal. 4-20 m A output sourc e.

3. MU T E - C irc uit closure between this term inal and C O M M O N disables Lim it #1 and #2 operation.

4. LAT C H - C ircuit closure (jumper) between this term inal and C O M M O N will autom atically reset lim it relays. An open circuit latches the tripped relays. C onnect remote reset switch at this term inal.

5. C O M M O N - C om mon for 4-20m A, M U T E, and LAT C H circ uits.

6. C , N /C , N /O (Limit #1) - C om m on (C ), N orm ally

C losed (N /C ) and N orm ally O pen (N /O ) term inals for

Lim it #1 (A larm ) relay.

7. C , N /C , N /O (Limit #2) - C om m on (C ), N orm ally

C losed (N /C ) and N orm ally O pen (N /O ) term inals for

Lim it #2 (Shutdown) relay.

8. L2, L1 - T erm inals for A C power input.

9. P O W E R IN D IC A T O R LE D - G reen P ower LE D illum inates during operation when AC power is supplied at L1 and L2.

10. T EST - T est button allows operator to verify operation. W hen held depressed, trips Limit #1 and Limit

#2 R elays and activates R ed Lim it LED s.

11. #1 VIBR AT IO N LIM IT - (Alarm ) 10 available settings from 10% to 100% . Settings represent a percentage of

Lim it #2 (S hutdown). P ush-on jum per is placed between the center row pin and the selected percentage.

12. #1 T IM E D ELAY - D elays Lim it #1 (A larm ) for up to

30 seconds to prevent nuisance tripping due to transient vibration. Adjust delay setting from 1 to 30 seconds.

13. #1 VIBR AT IO N LIM IT LED - R ed LED illum inates when Alarm vibration limit trips.

14. #2 VIB R AT IO N LIM IT - (Shutdown) 16 available settings from 0.1 to 2.75 inches per second. Settings represent maxim um vibration level setpoints. Push-on jum per is placed between center row pin and selected vibration lim it.

15. #2 VIBR AT IO N LIM IT LED - R ed LED illum inates when SH U T D O W N vibration lim it trips.

16. #2 T IME D ELAY - D elays Limit #2 (Shutdown) for up to 30 seconds to prevent nuisance tripping due to transient vibration. Adjust delay setting from 1 to 30 seconds.

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Model 550 Series

SECTION 3 - WIRING

WARNING: STOP MACHINE AND

DISCONNECT POWER BEFORE

INSTALLATION.

WIRING ACCESS -

Wiring access is through a 3/4” NPS cable entry on the side of the Series 550 and a

3/4” NPT cable entry on the 550-X.

JAM NUT - A Jam Nut must be used on the conduit to prevent threads from penetrating the enclosure.

Exam ple of fully wired 550 shown: 4-20 m A output, autom atic reset (jum per),

N orm ally O pen Lim it #1 and

Lim it #2 and 120 V A C connection.

TERMINAL STRIP - Terminal connections accept

18 guage AWG wires. Do not exceed the voltage or current ratings of the connectors.

CONDUIT - Customer external wiring subject to physical damage should be adequately protected.

Use a short length (12”) of flexible conduit between the vibration switch and external junction box when installing electrical conduit.

This provides some vibration insulation in the conduit line. Conduit and and fittings should conform to the environment of the switch location. Rated fittings should be used with the

550-X and 550M-X in hazardous locations.

Weather resistant or rain-tight fittings should be used to protect the switch wiring in humid or corrosive atmospheres. Use switch covers and metal conduit to shield circuits from RFI (Radio

Frequency Interference) and EMI

(Electro-Magnetic Interference)

SECTION 4 - ANALOG METER

The Balmac Part Number A-11347 Remote

Read-Out Panel Meter makes it easy to monitor the 550's overall vibration readings using the vibration switch 4-20 mA output signal.

SECTION 5 - TESTING

WARNING: MAKE THE AREA NON-

HAZARDOUS BEFORE OPENING THE

EXPLOSION-PROOF (-X) ENCLOSURE.

WARNING: REMOVE ALL POWER BEFORE

OPENING THE ENCLOSURE. DO NOT

ADJUST SETTINGS WHILE MACHINERY IS

OPERATING. ONLY QUALIFIED PERSONNEL

MAY PERFORM TESTING.

Two methods are available for testing the operation of the 550 Series Vibration Switch:

1. With cover removed, depress and hold the

TEST button. The limits should trip after the set time delay.

2. Set limits to minimum values. In this position, any vibration will cause a trip condition. Monitor the 4-20 mA output for the vibration measurement response. Note: the switch must be vibrated longer than the time delay. The limit

LED lights should glow once the limits have tripped and remain glowing until the limits are reset.

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SECTION 6 - INSTALLATION

WARNING: STOP MACHINE AND

DISCONNECT POWER BEFORE

INSTALLATION.

1. Select mounting location. If possible, survey the machine with a vibration meter to determine the best location - direction of strongest vibration.

The 550 axis of sensitivity is perpendicular to the mounting base. This means the arrow on the switch label should point in the same direction as the vibration measurement.

2. Mount the 550 in the horizontal, vertical or axial plane close to the centerline of the rotating shaft. This location varies from machine to machine. Example - worn bearings or unbalance can be detected near the bearing housings and at right angles to the rotating shaft axis.

3. Install the 550 enclosure on a flat surface area. Use 1/4” hardware. Mounting surface must be rigidly attached to the area where the vibration is to be monitored. Arrow on switch enclosure side should be in the direction of vibration motion

(point in same direction).

4. Mounting plates should be used if the vibration switch cannot be mounted on a flat surface of the machine. Plates should be rigid and small as possible. Use half inch thick reinforced plate. Ensure that the resonant frequency of the mounting plate is not within the frequency range of the unit. Make sure the 550 and mounting plate are securely attached to the machinery monitoring point.

Model 550 Series

WARNING: DO NOT ADJUST SETTINGS

WHILE MACHINERY IS OPERATING. ONLY

QUALIFIED PERSONNEL SHOULD PERFORM

ADJUSTMENTS.

5. Set vibration limits. Set jumper on Limit #2

(Shutdown) to maximum vibration level. Example for a 0.5 IN/SEC limit. Jumper is connected to center pin row and pin at the 0.5 marking.

6. Set jumper on Limit #1 (Alarm) as a percentage of Limit #2. Example for a value of

0.25 IN/SEC limit: place jumper on the center row pin and pin closest to 50 (50%) marking. This setting represents 50% of Limit #2. (0.5 IN/SEC x

50% = 0.25 IN/SEC).

7. Set Time Delays. Adjust Time Delays controls for the Limit #1 and #2 (1 to 30 seconds). The delay is used to avoid nuisance trips due to transient vibrations during machinery startup and from other temporary vibration sources.

SECTION 7 - LATCHING

The 550's are provided with a jumper (wire connector) connecting the LATCH and COMMON terminals. The 550 relays are in the NON-

LATCHING mode (automatic reset) with the jumper connected. If the jumper is removed, the

550's relays are in the LATCHING mode.

NON-LATCHING Example - When vibration exceeds the Limit setting, after the time delay, the relay will trip and light the limit LED indicator.

As soon as the vibration drops below the set limit, the Limit relay will automatically reset (LED off).

LATCHING Example - With jumper removed, when vibration exceeds Limit setting, after the time delay, the Limit relay will trip and light the limit LED indicator. An open circuit between

LATCH and COMMON maintains the relay latching operation until the switch relays are manually reset by using a connected remote reset switch, or by powering off the 550.

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Model 550 Series

SECTION 8 - VIBRATION SETTINGS

- LIMIT #1 & LIMIT #2

Setting Vibration Lim its - E xample: Set Lim it #2 (S hutdown) vibration setpoint at 1 inch per second. Set Lim it #1 (A larm ) at 50% . Follow

R ow labeled 50% across until it intersects with C olum n labeled “#2@ 1.0.” R esult is “0.5.”

SECTION 9 - VIBRATION LIMITS

Several standards for acceptable vibration lim its are available. T he chart below m ay be used as a general guideline to acceptable and non-acceptable vibration levels for various classes of m achinery. Contact your m achinery manufacturer for recomm ended vibration lim its.

VIBR AT IO N SEVER IT Y C H AR T : C lass 1: Individual components, integrally connected with the complete machine in its norm al operating condition. Sm all electric m otors, Precision M achines, T urbines.

C lass 2: M edium size m achinery without special foundations, rigidly m ounted engines, or m achines on special foundations. G ear boxes, Pum ps, M-G sets, Fans.

C lass 3: Large prim e movers m ounted on heavy, rigid foundations. C ompressors, Blowers, H amm er m ills, Engines.

C lass 4: Large prim e movers on relatively soft, light weight structures. C rushers, R eciprocating M achinery, Vibrating C onveyors.

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Model 550 Series

SECTION 10 - ENCLOSURES

M odel 550, calibrated in English units, is shown below. T he Model 550M is calibrated in m etric units of vibration (not shown). T he Model

550 and 550M housing is a cast aluminum enclosure. T his rugged, water-tight and dust-tight box m eets portions of N EM A 3, 4 and 12 classifications. T he 550 and 550M cast alum inum box includes cover (held in place with 6 screws) and rubber gasket.

T he MO D EL 550-X (in English units) is shown below. T he Model 550M-X is in Metric units. T he 550-X and 550M-X have a cast alum inum housing with threaded screw type cover and gasket. T hese enclosures are rated for use in hazardous locations for C lass I,

G roups C & D ; C lass II, G roups E, F, & G . See housing specifications supplied with the 550-X and 550M -X enclosures. C AU T IO N :

Always disconnect 550-X and 550M -X from energized circ uits before opening the enclosure in a hazardous atmosphere. Keep cover tightly closed when circuits are energized. See enclosure label for rated specifications.

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Model 550 Series

SECTION 11 - SPECIFICATIONS - 550, 550-X, 550M & 550M-X

FEATURE DESCRIPTION

Velocity Range 550 & 550-X

550M & 550M-X

Frequency Range

Limits

Limit Outputs

Limit Indicator

Time Delay

Limit Latch

(Remote Reset)

& Mute

Analog Output

Sensitive Axis

Input Power

Enclosure

550 & 550M

0.1 to 2.75 in/sec Peak (English Units) 0.1, .15, .2, .25, .3, .4, .5, .75,

1.25, 1.5, 1.75, 2, 2.25, 2.5, 2.75 in/sec

2.5 to 70 mm/sec Peak (Metric Units) 2.5, 4, 5, 6.5, 7.5, 10, 13, 19, 25.5,

32, 38, 44.5, 51, 57, 63.5, 70 mm/sec

2 to 1,000 Hz (120 to 60,000 RPM)

Two user adjustable limits Push-on Jumpers

Limit #1 (Warning) Range: 10% to 100% of Limit #2 (Shutdown)

Limit #2 (Shutdown) Range: 0.1 to 2.75 in/sec (2.5 to 70 mm/sec)

Industrial Sealed Form-C Type Relay (Dry Contact) SPDT. Each limit has one normally-open (N/O) and one normally closed (N/C) 5A@125

VAC, 5A@ 28 VDC

LED (red) energize on Limit trip (one indicator for each Limit)

Limit trip time delay of 1 to 30 seconds

Labeled Selections: 1, 5, 10, 15, 20, 25, 30

Circuit closure between Latch and Common terminals resets Limits

An open circuit maintains (latches) the Limit relays

Circuit closure between Mute and Common disables Limits

4-20 mA DC into 500 ohms. Optional remote panel meter #A-11347

Perpendicular to mounting base. Omni-directional mounting.

100-130 VAC 50/60 Hz. (190-250 VAC optional) Power LED (green)

550-X & 550M-X

Mounting 550

Mounting 550-X

Electrical

Size 550 & 550M

Size 550-X & 550M-X

Cast Aluminum box with cover and gasket. Water, dust-tight

NEMA 3, 4 and 12

Cast Aluminum box with threaded screw type cover and gasket.

Class I, Groups C & D; Class II, Groups E, F, & G; Class III

1/4” hardware - 3 places mounting bolt hole lugs (bosses)

1/4” hardware - 2 places mounting bolt hole lugs (bosses)

3/4” NPS (550) / NPT (550-X). Conduit Fitting Entry.

Terminals for #18 AWG Wire.

3.44” x 5.94” x 4” (8.74 x 15.09 x 10.16 cm) Weight: 3.75 lb (1.7 kg)

4.81” x 6.75” x 4.5” (12.22 x 17.15 x 11.43 cm) Weight 5.5 lb (2.5 kg)

SECTION 12 - WARRANTY

Our complete Warranty and Service information is listed on our Website at www.balmacinc.com.