Bently Nevada 3300/46 Manuel utilisateur

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3300/46

RAMP DIFFERENTIAL

EXPANSION

MONITOR

OPERATION MANUAL

BENTLY

NEVADA

PART NO. 84413-01

Ramp Differential Expansion Monitor Operation

NOTICE

84413-01

READ THE FOLLOWING BEFORE INSTALLING OR OPERATING EQUIPMENT

Bently Nevada Corporation has attempted to identify areas of risk created by improper installation

and/or operation of this product. These areas of information are noted as WARNING or CAUTION

for your protection and for the safe and effective operation of this equipment. Read all instructions

before installing or operating this product. Pay particular attention to those areas designated by the

following symbols.

WARNING

High Voltage present

Could cause shock, bums

or death.

Do Not touch exposed

wires or terminals.

CAUTION

Machine Protection

Will Be Lost

In this document procedures are given only for channel A. Procedures for channel B are similar

except for the obvious substitution of corresponding switches, terminals, and indicators.

SYMBOLS

Special symbols are used in the manual to illustrate specifics in the step by step processes. For

example:

PRESS

FLASHING CONNECT DISCONNECT OBSERVE SCREWDRIVER

ii.

•

•Ramp Differential Expansion Monitor Maintenance

112 1 Test OK Limits

Figure 9

84414-01

1. Disconnect COM and IN wiring from the

channel A terminals on the Signal Input Relay

Module.

2. Connect the multimeter and the power supply.

3. Adjust the power supply voltage for -9 Vdc.

4. Verify that the channel A OK LED is on.

5. Increase the power supply voltage (more

negative) until the OK LED goes off (upper limit).

Verify that the upper OK limit is within the upper

OK voltage range (reference Table 8).

A\ CAUTION

Test will exceed alarm setpoint

levels causing alarms to

activate. This could result in

relay contact to change state.

See Danger Bypass section 10.

A\ WARNING

High Voltage present. Could

cause shock, bums or death.

Do not touch exposed wires or

terminals.

m••..

DIFFERENT I AL

EXPANSION tiON

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4COM

000 A (3)

1.0.V.tro ••••••cur...r.s

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Ramp Differential Expansion Monitor Maintenance

12 Test OK Limits Cont.

6. Verify that the OK relay changes state (de-

energized). Note : all other channels in the

rack must be OK or bypassed in order for the

relay to change state.

7. Decrease the power supply voltage (less

negative) to -9 Vdc and verify that the OK LED

comes back on and the OK relay energizes (if

the Non-latching Not OK jumper is installed).

Press the RESET switch on the System

Monitor to reset latching Not OKs.

8. Gradually decrease the power supply voltage

(less negative) until the OK LED goes off

(lower limit). Verify that the lower OK limit is

within the lower OK voltage range (reference

Table 8 ).

9. Verify that the OK relay deenergizes.

10. When finished, disconnect the power supply

and multimeter and reconnect COM and IN

wiring to the channel A terminals on the Signal

Input Relay Module. Verify that the OK LED

comes on and the OK relay energizes (if the

Non-latching Not OK jumper is installed).

Press the RESET switch on the System

Monitor to reset latching Not OKs.

11. Repeat steps 1 through 10 for channel B.

1.11.111\

TABLE 8. OK Voltage Limits

,wwwwim. 84414-01

11•11:1

'lilt), 46

011-FE:ENT IAt_

ExpANSIC'; MONITOR

Transducer Type Lower OK Voltage Limits Upper OK Voltage Limits

11 mm

14 mm

25 35, d 50 mm

-3.25 Vdc to -3.35 Vdc

-1.65 Vdc to -1.75 Vdc

-1.30 Vdc to -1.40 Vdc

-19.68 Vdc to -19.88 Vdc

-18.20 Vdc to -18.40 Vdc

-12.40 Vdc to -12.60 Vdc

3Srnm?�c�es

41111.11mor

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Ramp Differential Expansion Monitor Maintenance

LI id Calibrate Channels

Figure 1

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Calibration Terminology:

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CINIGUM I 101

61,4 V11.4.11CIR

WILMA

uVA, ,Pdi• PRIV •,

U2•11111/011:14

tways, Jr

84414-01

CAUTION

Monitoring will be bypassed

automatically during calibration.

Machine Protection will be lost

during calibration. See Danger

Bypass section 10.

4\WARNING

High voltage present could

cause shock, burns or death.

Do not touch exposed wires or

terminals.

TSF is defined as Transducer Scale Factor. 11 mm and 14mm = 100 mV/mil (3.937 V/mm), 25mm

and 35mm = 20 mV/mil (0.7874 V/mm), 50mm = 10 mV/mil (0.3937 V/mm).

MR is the range from the bottom of the meter to the top of the meter (in inches).

FUSV is the full upscale voltage.

ZPV is the zero position voltage.

is the ramp angle (see figure below and section 6 for ramp angle options).

CHANNEL A , CHANNEL

PROBE ) PROBE

"7:11r4

TABLE 9. Zero Position Voltage

Transducer Type Zero Position Voltage (WV)

01 (11mm)

02 (14mm)

03 (25mm)

04 (35mm)

05 (50mm)

-11.6 ± 0.65 Vdc

-10.0 ± 0_65 Vdc

- 6.5 ± 0.30 Vdc

170 'd C26N220/ 'ON Xdd ONIIDOW t 9:Ei UM 66-80-0K

•

Ramp Differential Expansion Monitor Maintenance 84414-01

Calibrate Channels FCont.

1. Disconnect COM and IN wiring from the

Channel A terminals on the Signal Input Relay

Module.

2. Connect a power supply and a multimeter to

COM and IN with polarity as shown in Figure

1on page 24.

3. Open front panel.

4. Short calibration terminals (CA) using a clip

lead (a jumper may be used if the monitor is

on an extender card). A test pattern will

appear on the display when the calibration

terminals are shorted and no calibration dip

switches are set. Both BYPASS LEDs will

come on.

5. Activate the Channel A zero adjust dipswitch (ZA)

by moving it to the left. Measure the voltage at

Test Point Channel A (TA) using the multimeter.

Adjust the power supply to ZPV (reference Table

9). Press the GAP switch and use the (t) and ( )

switches on the System Monitor to adjust the

voltage at TA to get +2.5 ± 0.03Vdc.

6. Deactivate the Channel A zero adjust dipswitch

(ZA) by moving it to the right. If the short is removed from the calibration

dipswitch is deactivated, the adjustment will not be stored.

7. Repeat steps 1-6 for Channel B substituting ZB and TB.

terminals before the

SO 'd EtHaiLML 'ON HE ONIENEN 99:EIQOM 66-80-03C

•

Ramp Differential Expansion Monitor Maintenance

113 I Calibrate Channels [Conti

8. Activate the Channel A gain adjust dip

switch (GA) by moving it to the left. The

Channel A bargraph will begin to flash.

Measure the voltage at Test point Channel A

(TA) using the multimeter. Adjust the power

supply to the Full Upscale Voltage (FUSV)

(reference Table 10).

9. Press the GAP switch and use the System

Monitor ('1') and (1) switches to adjust the

gain until the Test point Channel A (TA) is at

+5.0 ±0.05 Vdc and the BYPASS LED is on

steady (not flashing). The flashing BYPASS

LED indicates an overrange condition. If this

occurs, reduce the gain using the System

Monitor (1) switch.

10. Deactivate the Channel A gain adjust dip

switch (GA) by moving it to the right. If the

short is removed from the calibration

terminals (CA) before the dip switch is

deactivated, the adjustment will not be

stored.

11. Repeat steps 8 through 10 for Channel B

substituting GB and TB.

84414-01

90'd E2E6UOL 'ON XV.] ONIIENVW 99:EI 66-80-0a1

•

Ramp Differential Expansion Monitor Maintenance

113 I Calibrate Channels [Cont]

12. Activate the meter adjust dip switch (MA) by

moving it to the left. The differential

expansion signal will begin to flash on the left

LCD display.

13. Measure the voltage at test point Channel A

(TA) using the multimeter. Adjust both power

supplies to ZPV (reference Table 9). Press

the GAP switch and use the System Monitor

(T) and (1) switches to adjust the voltage at

TA to +2.5 ± 0.03Vdc.

14. Deactivate the meter adjust dip switch (MA)

by moving it to the right. If the short is

removed from the calibration terminals (CA)

before the dip switch is deactivated, the

adjustment will not be stored.

15. Remove the clip lead (jumper) from the

calibration terminals (CA).

TABLE 10. Formulas for Full Upscale Volts

84414-01

Full Upscale Volts (FUSV) Vdc

Single Ramp Option Probe A

Direction Dual Ramp Option Probe A or B

Probe B

Upscale Toward

Probe A

Upscale Away

From Probe A

ZPV +(0.5 sin 8 )(TSF)(MR) ZPV + (0.5 tan 8)(TSF)(MR)

ZPV -(0.5 sin 8)(TSF)(MR) ZPV - (0.5 tan 8)(TSF)(MR)

Example: A user has a 25mm probe and a 0.25-0-0.25 inch full scale range. The monitor is configured

for upscale toward probe A with dual ramp angles of 14 degrees.

(1 inch = 1000 mils, 1 V = 1000mV)

TSF = 20mV/mil

MR = 0.5 inches

FUSV = -6.5Vdc + (0.5 sin 14)(20mV/mil)(1V/1000mV)(1000mils/inch)(0.5inches) -5.29 Vdc

LO 'd £203/20L 'ON XV.4 ONIENNW 99:E1 aim 66-80-011

•

Ramp Differential Expansion Monitor Operation

FORWARD

84413-01

This document is for personnel who operate the 3300 Monitoring System. The procedures are

presented in step-by-step graphic format.

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