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38

DMV-100 Rotor Creep and Speed Detector - Installation Manual

The relay switches as follows:

Table 3: Relay status according to event

Event Reported

Relay Status

Both LEDs inactive - main rack-mount unit powered-off

relay de-energized

Sensor and/or cable not connected

Red “ROTATION” LED active - rotation reported

Green “STOP” LED active - no rotation reported for more than 25 seconds

relay energized

5.3.5 Connecting 4-20 mA Output (RPM) Terminals

This 3-position connector delivers an analog RPM signal, which corresponds to the displayed reading. 

Figure 35 : RPM output (4-20 mA) connector assignment

Note 

:This output signal will drive a maximum resistive load of 500 

.

To make use of this linear output, available to a controller or other third-party metering equipment, 
apply the following transfer formula: 

RPM  =  Linear Output (mA)  X  Max(RPM) – Min(RPM) +  5 Min(RPM) – Max(RPM)

16 4 

4 

where: 

Min(RPM) =  lower RPM limit as configured into the Speed Indicator

Max(RPM) =  upper RPM limit as configured into the Speed Indicator

Linear Output (mA) =

reading at 4-20 mA output terminals
(see parameters

 LSet.L

 and 

LSet.H

 in Section 

5.4.2.1 “Parameters”

)

Содержание DMV-100

Страница 1: ...DMV 100 Rotor Creep and Speed Detector Installation Manual...

Страница 2: ...ironments Whenever it is likely that safety protection has been impaired make this instrument inoperative and secure it against any unintended operation Have this instrument serviced only by qualified...

Страница 3: ...le sensor end 15 3 2 3 Silicone application 20 3 2 4 Installation of triaxial extension cable signal conditioning module end 21 3 3 General specifications of the triaxial extension cables 22 4 INSTALL...

Страница 4: ...Terminal 35 5 3 3 Connecting the DCC 631 Conditioner to the DMV 100 Unit 36 5 3 4 Connecting the Relay Output Creep Terminals 37 5 3 5 Connecting 4 20 mA Output RPM Terminals 38 5 4 Initial setup of...

Страница 5: ...ection of rotor motion creep and monitoring of machine rotational speed RPM The DMV 100 System is comprised of Qty Description 1 DMV 100 Monitoring Unit 1 DCC 631 10S 5 50 DM 100 Series Signal Conditi...

Страница 6: ...6 DMV 100 Rotor Creep and Speed Detector Installation Manual...

Страница 7: ...surface must be parallel to the target surface The sensor must be glued against the stator laminations at a position where it will face the plane area of the rotor poles usually beneath the second ven...

Страница 8: ...ation kit sandpaper and cleaning rags 2 2 Positioning the air gap sensor The air gap sensor must be placed beneath the second ventilation hole When the generator is in rotation the whole surface of th...

Страница 9: ...tator 3 Apply the catalyst over the glue on the sensor 4 Position sensor on the clean surface of the stator The sensor must face the plane area of the rotor poles which usually starts after the second...

Страница 10: ...10 DMV 100 Rotor Creep and Speed Detector Installation Manual...

Страница 11: ...79 to 787 mils Frequency response limited by the linearization module Interchangeability 5 Connection Integral cable Type coaxial Length 50 0 cm 19 68 in Connector SMA plug male contact Environmental...

Страница 12: ...77 mm 0 07 33 25 mm 1 30 220 50 mm 8 68 VM 3 1 SIDE VIEW Coaxial Integral Cable 50 cm 19 68 TOP VIEW Dimensions 12 DMV 100 Rotor Creep and Speed Detector Installation Manual Figure 4 Dimensions of the...

Страница 13: ...uit protective tubing and heat shrinkable tubing Triaxial extension cables are terminated with an SMA plug male contact connector on the signal condi tioning module end and an SMA jack female contact...

Страница 14: ...on Triaxial extension cables must be installed on the stator frame or a grounded surface to avoid disrupting the equipotential and prevent the formation of surface partial discharges and arcing triaxi...

Страница 15: ...connection to the sensor Cut the tubing to the right length so that it will not extend beyond the stator edge The tubing can be heated and bent Install the tubing in close contact as much as possible...

Страница 16: ...ra length to work on the connection without pulling the ground wire completely into the protective tubing If the sensor cable is also equipped with a ground wire this ground wire will have to be pulle...

Страница 17: ...e tubing over the connection and shrink the tubing with a heat gun The heat shrinkable tubing must be placed over the connection to prevent accidental short circuits between connectors and metallic pa...

Страница 18: ...ear one of the screws If the sensor integral cable is equipped with a ground wire also pull this wire through the open space The elbow must be firmly clamped to the protective tubing Figure 15 Pulling...

Страница 19: ...le is also equipped with a ground wire this ground wire will have to be connected to the ground structure at the same location as the triaxial extension cable ground wire Use threadlocker Loctite 242...

Страница 20: ...en applying silicone keep the detection surface of the sensor clean and free of silicone 1 Cover the sensor s integral cable with silicone from the top of the sensor to the edge of the protective tubi...

Страница 21: ...lling it into the conduit protect the connector by wrapping electrical tape over it proceed slowly avoid placing too much tension do not force beyond the minimal bending radius 5 cm 2 5 2 From the enc...

Страница 22: ...Excess cable stored in enclosure 3 3 General specifications of the triaxial extension cables Cable type Description Length Connector type on sensor end on conditioner end 10S Triaxial S SMA SMA 10 m 3...

Страница 23: ...ng factory calibration and must not be altered The DCC 631 module must be installed close to the stator of the monitored machine The casing of the DCC 631 module must be grounded The cast aluminium ca...

Страница 24: ...Tools needed drill and assorted bits and tapping tools if mounted without nuts screwdriver assorted to the mounting screws pliers or flat wrench for nuts if used 4 2 3 Mechanical installation of the...

Страница 25: ...nsert the tooth lock washer the round lug the spring lock washer and the nut onto the grounding bolt Screw the nut firmly to ensure the grounding connection Recommended grounding connec tion torque 2...

Страница 26: ...brief flash per second indicates normal operation Status OK The LED turns red and repeats a sequence of pulses to indicate an error condition Error condition 1 the LED turns on for one second followe...

Страница 27: ...elay after a 25 seconds delay Air gap variation 5 mm 197 mils 1 P Output Signal Pole 50 of range contact closed Between poles 90 of range contact open Accuracy 5 of reading Repeatability 0 6 of readin...

Страница 28: ...100 Rotor Creep and Speed Detector Installation Manual Physical characteristics Module body Die cast aluminium compact casing body Dimensions Height 44 5mm 1 75 in Width 82 5mm 3 25 in Length 139 5mm...

Страница 29: ...detection the DCC 631 measuring chain sends a 1 pole pulse to the DMV 100 unit for display of real time machine speed RPM through a programmable digital speed display unit A 4 20 mA RPM proportional...

Страница 30: ...5 D x 89 H mm 19 W x 12 D x 3 5 H inches Figure 26 DMV 100 Rotor Creep and Speed Detection Unit 2 1 3 Figure 27 Front panel of the DMV 100 rack mount unit Red LED Rotation This red indicator lights up...

Страница 31: ...play and configuration param eters On screen keywords guide users during setup refer to 5 4 Initial setup of the DMV 100 System 4 5 6 9 7 10 8 Figure 29 4 20 mA Output RPM Terminals Back panel of the...

Страница 32: ...One fuse is provided for each lead to the power supply Power Input Terminals An internal power supply accepts AC or DC source This power supply feeds the DMV 100 Unit and the DCC 631 Conditioner elec...

Страница 33: ...h also helps to draw cooling air through the unit The best placement of the baffles depends on the airflow patterns in the rack Cabling must be kept away from sources of electrical noise power lines a...

Страница 34: ...secure it with the screws 3 Additional support must be provided at the back of the unit either by adding braces underneath the unit or installing support brackets refer to next picture Figure 30 Secur...

Страница 35: ...mbination serving as the main disconnect device For safety purposes a 15A circuit breaker should also be included in the AC input wiring Several instruments may be connected to a circuit protected by...

Страница 36: ...shield must be connected as shown The power and output cable sends creep detection signals and 1 pole pulses to the DMV 100 rack mount unit while the DMV 100 rack mount unit uses one pair to send 24VD...

Страница 37: ...er relay used for miscellaneous field equipment As shown in Figure 32 Power input and signal output M12 connectorized cable connectors assignment the relay maintains NO and NC contacts which alternate...

Страница 38: ...n connector delivers an analog RPM signal which corresponds to the displayed reading Figure 35 RPM output 4 20 mA connector assignment Note This output signal will drive a maximum resistive load of 50...

Страница 39: ...is read by the speed indicator The speed indicator measures the frequency of the impulsions and then converts it into RPM Pole detection by the conditioner derives from hysteresis detection minimum hy...

Страница 40: ...LEVEL key at least 3 seconds to access exit configuration mode Press the LEVEL key to change level while in configuration mode Press the MODE key to display the next parameter within currently select...

Страница 41: ...e Simple average moving average AVG N Averaging time 1 2 4 8 16 32 64 128 256 512 1024 AT ZA Auto zero time A 0 0 to 2999 9 MEMO Power interruption memory OFF ON L2 D REF Display refresh period OFF 0...

Страница 42: ...mming the display uses scientific notation In this example the following parameters will be set to the following values Prescaling value X mantissa 1 25 example value Prescaling value Y exponent 10 2...

Страница 43: ...F3 Error ratio unit F4 Error unit F5 Concentration unit F6 Passing time unit s input pulse cycle Press the Mode key for next parameter 3 IN TA Input type A Do not change the setting the DMV 100 appli...

Страница 44: ...key to edit the parameter and use Up key to select OFF Press the Level key to access the Display adjustment parameters Display adjustment set of parameters at Level 2 11 D REF Display refresh period O...

Страница 45: ...ameters at Level 5 17 LSET C Linear current model 0 to 20 mA or 4 to 20 mA Press the Shift key to edit the parameter and use the Up key to select 4 20 mA Press the Mode key for next parameter 18 LSET...

Страница 46: ...r one input Input type Four types of input signals can be specified In the DMV 100 application type 00 is required For reference only the input types are No voltage contact 30 Hz max with ON OFF pulse...

Страница 47: ...time A The frequency can be force set to zero if there is no input pulse for a set period The display will not easily return to zero if the auto zero time is too long or left at the default setting D...

Страница 48: ...when there are no key operations during setting opera tions The length can be adjusted here Position meter type set to incremental recommended setting The meter on the right side of the front panel co...

Страница 49: ...ortional to RPM measurement values as they change Select the type of linear output with the following parameter Linear current model 4 20 mA required setting Set the corresponding RPM range proportion...

Страница 50: ...50 DMV 100 Rotor Creep and Speed Detector Installation Manual...

Страница 51: ...ion Front panel LED indicators Green Stop Rotor stopped Red Rotation Rotor moving Relay output SPDT State of relay DMV 100 Unit OFF Relay de energized Machine rotating Relay de energized Machine stopp...

Страница 52: ...vironmental Temperature Operation 0 to 50 C 32 to 122 F Storage 20 to 65 C 5 to 150 F Humidity Up to 90 non condensing Physical characteristics Casing 2U 19 rack mount Dimensions Height 8 9 cm 3 5 in...

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