Bently Nevada 3300/46 User manual

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• • • • • • •
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3300/46
RAMP DIFFERENTIAL
EXPANSION
MONITOR
OPERATION MANUAL
BENTLY
NEVADA
0
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
P1
,1!
4COM
000 A (3)
1.0.V.tro ••••••cur...r.s
22
£26Z8LML 'ON HE ONIENNVW ES:EI a3M 66-80-03G

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
23
41111.11mor
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Ramp Differential Expansion Monitor Maintenance
LI id Calibrate Channels
Figure 1
1--'421*
°NAL
NeVZ.ZEi
Calibration Terminology:
[0.q1113,
CAG LOT
L— 1;rtt"
LEic...101
KI
CINIGUM I 101
61,4 V11.4.11CIR
WILMA
uVA, ,Pdi• PRIV •,
U2•11111/011:14
tways, Jr
3
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
24
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
25
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
26
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
27
LO 'd £203/20L 'ON XV.4 ONIENNW 99:E1 aim 66-80-011

a
•
•
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.
RELATED DOCUMENTS
3300 System Overview, 80177
3300 System Installation Instructions, 80172
3300 System Troubleshooting, 80173
3300/10 Power Supply, 80174
3300/01 System Monitor, 80175
3300/46 Ramp Differential Expansion Maintenance, 84414-01
Keyphasor® is a registered trademark of Bently Nevada Corporation
Proximitor is a registered trademark of Bently Nevada Corporation
Document No. 84413 . First Printing: May 1989 . Revision NC: May 1989
Copyright() 1989 Bently Nevada Corporation
All Rights reserved
No Part of this publication may be reproduced, transmitted, stored in a retrieval system nor translated into any human or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise,
without the prior written permission of the copyright miner,
Bently Nevada Corporation
P. O . Box 157
Minden, Nevada 89423 USA
Tele phon e 800-227-5514 702-782-3611
Tele mail /Tele x 7400983 BNC UC
Fax [phone]
Copyright infringement is a serious matter under
United States of America and Foreign Copyright Laws
iii

Ramp Differential Expansion Monitor Operation 84413-01
Blank Page
iv
•

•Ramp Differential Expansion Monitor Operation
CONTENTS
84413-01
TITLE PAGE
Differential Expansion Monitor System 1
Monitor Options 2
3. Programmable Options 3
4. Monitor Functions 4,5
5. OK 6
6. Bypass 7
7. Alert 8
8. Danger 9
9. Read Channel Differential Expansion 10
•10. Read Gap Voltage 11
11. Read Setpoint Levels 12
12. Self Test 13-15
INDEX 16
•
SECTION
1.
2.

Ramp Differential Expansion Monitor Operation 84413-01
Blank Page
vi
•
•
•

•
•
•
Ramp Differential Expansion Monitor Operation 84413-01
1DIFFERENTIAL EXPANSION MONITOR SYSTEM
3300/48
DIFFERENTIAL
EXPANSION MONITOR
3
2
E,
N
A0
0
0
s—
'21-1
OK
DANGER
ALERT
BYPASS
•
A
B
0
•
ALERT
B
BUFFERED TRANSDUCERS
r
•CHANNEL A
RECORDER
OUTPUT
ALERT
RELAY
CONTACTS
SIGNAL INPUT RELAY
MODULE LOCATION
3300 RACK
OO
<1:=1
OO
PROXIMITOR
OO
C=i
O
PROXIMITOR
SIGNAL INPUT
CHANNEL
RECORDER
OUTPUT
DANGER
RELAY
CONTACTS
NOTE: CHANNEL B RECORDER OUTPUT ONLY ACTIVE DURING CALIBRATION
(V
CHANNEL B
PROBE <431P.
SHAFT
CHANBEL B
PROBE
SHAFT
`4(674€L ^
DUAL RAMP OPTION
CHANNEL A
PROBE
SINGLE RAMP OPTION
1

Ramp Differential Expansion Monitor Operation
TRANSDUCER
FULL SCALE RANGE INPUT ALARM RELAY
AGENCY
APPROVAL
3300/46 AA BB CC DD
01 = 5-0-5mm 01 = 11mm, 00 = NONE 00 =NOT REQUIRED
02 =0 - 10mm 100 mV/mil 01 = EPDXY 01 = CSA
03 =0.25-0-0.25 INCHES 02 = 14mm, SEALED 02 =BASEEFA
04 =0 - 0.5 INCHES 100 mV/mil 02 = HERMETI- 03 = FM
05 =10-0-10mm 03 = 25mm, CALLY SEALED
06 =0 - 20mm 20 mV/mil 03 = EPDXY
07 =0.5-0-0.5 INCHES 04 = 35mm, SEALED QUAD
08 =0 - 1.0 INCHES 20 mV/mil
09 =1.0-0-1.0 INCHES 05 = 50mm,
10 =0 - 2.0 INCHES 10 mV/mil
11 =25-0-25mm
12 =0 - 50mm
84413-01
2MONITOR OPTIONS
RAMP DIFFERENTIAL EXPANSION
MONITOR PART NUMBER
2

•
FIRST OUT ENABLED *
DISABLED
DANGER MODE LATCHING *
NONLATCHING
ALARM DELAYS 0.1 SECOND
1SECOND
3SECOND *
6SECOND
RECORDER OUTPUTS +4 TO +20 mA *
+1 TO +5 Vdc
0 TO -10 Vdc
NOT OK MODE NONLATCHING *
LATCHING
RAMP OPTION DUAL *
SINGLE
ALERT MODE LATCHING *
NONLATCHING
UPSCALE DIRECTION TOWARD PROBE A *
AWAY FROM PROBE A
METER RESPONSE TIME FAST *
SLOW
DANGER BYPASS SWITCH ENABLED
DISABLED *
RAMP ANGLE 4TO 45 DEGREES
(1 DEGREE
INCREMENTS) **
NOT OK MONITOR DEFEAT ENABLED
DISABLED *#
•
Ramp Differential Expansion Monitor Operation
I3 I PROGRAMMABLE OPTIONS
MONITOR FEATURE OPTION MONITOR FEATURE OPTION
84413-01
I
* AS SHIPPED FROM FACTORY
#REQUIRES NONLATCHING OK OPTION
** AS SHIPPED FROM FACTORY: 11/14mm = 7 deg, 25/35/50mm = 12 deg
•
3

Ramp Differential Expansion Monitor Operation 84413-01
4MONITOR FUNCTIONS
RAMP DIFFERENTIAL EXPANSION - The Ramp Differential Expansion Monitor provides continuous
monitoring of shaft growth relative to the machine case. Normal expansion direction can be toward
or away from the probe A.
PROBE GAP VOLTAGE - Probe gap is measured as a negative dc voltage that is directly proportional
to the gap distance between the face of a proximity probe and the surface being monitored. Probe
gap voltage for each channel is displayed on the front panel meter by pressing the GAP switch.
OK - When the Proximitor output voltage is within its upper/lower limits, the transducer is defined as
OK. The OK detection circuit controls the channel OK LED and the monitor relay drive to the system
OK relay. If the monitor has the latching Not OK option, a System Reset is required to reset the OK
function.
OK RELAY - The OK relay is located on the Power Input Module. Every channel in the rack must
be OK or bypassed to energize the OK relay.
ALARM - Pressing the ALERT and DANGER switches on the front panel of the monitor causes the
Alert (first-level alarm) or Danger (second-level alarm) setpoints to be displayed on the front
panel meter. ALERT and DANGER LEDs come on when the differential expansion signal level exceeds
preset levels for the selected time delay, and appropriate Alert and Danger alarm relay contacts are
activated.
FIRST OUT - Separate First Out circuits exist for Alert and Danger alarms. A monitor with First Out
option selected flashes the LONG or SHORT alarm LED if that particular alarm was the first alarm
since the last reset. Pressing the RESET switch acknowledges the First Out.
ALARM RELAYS - Monitor alarms can be programmed for either the latching or nonlatching mode.
In the nonlatching mode, the alarm resets automatically when the alarm no longer exists. In the
latching mode, the alarm condition must be reset manually by pressing the RESET switch on the front
panel of the System Monitor (or by closing external Reset contacts). The alarm will not reset if the
alarm condition still exists.
DANGER BYPASS - For maintenance functions, a Danger Bypass switch on the monitor circuit board
behind the front panel can be set to inhibit the Danger relay drive. This function causes the BYPASS
LEDs to be turned on. Other front panel functions are not affected. This function can be enabled by
installing a jumper on the monitor.
BUFFERED OUTPUT - The Channels A and B coaxial cable connectors on the front panel of the
monitor and terminals on the Signal Input Relay Module provide buffered signals from respective
channel transducers. These connectors can be used for connection of external equipment.
4

•
•
•
Ramp Differential Expansion Monitor Operation 84413-01
4MONITOR FUNCTIONS
RECORDER OUTPUT - Depending on the option selected, the recorder output levels proportional to
the measured differential expansion signal are 0 to -10Vdc, +1 to +5Vdc, or +4 to +20mA.
SELF TEST - The monitor has three categories of self test: Power-up, Cyclic, and User-invoked.
Power-up self test is performed automatically each time the monitor power is turned on. A series
of basic tests and transducer OK tests are performed.
Cyclic self test is performed automatically during monitor operation. Errors encountered during
cyclic tests disable the monitor, and flash error code on the LCD bargraph. If the error is
intermittent, the monitor will return to operation, but the error codes are stored for retrieval during
User-invoked self tests. Stored error codes are indicated by OK LEDs flashing at 5 Hz provided
that the channel is OK.
User-invoked test performs Power-up self test and allows error codes stored during cyclic tests
to be read and cleared. Stored errors are annunciated by flashing the OK LEDs at 5 Hz and
displaying the error codes on the front panel LCD bargraph.
Not OK Monitor Defeat - The Not OK Monitor Defeat function prevents faulty transducer wiring from
causing false alarms. If a transducer is determined to be Not OK, the channel OK LED goes off, the
Channel BYPASS LED comes on, the differential expansion signal is clamped to zero position,
alarming is disabled, and the OK relay deenergizes. If a channel's input signal returns to an OK
condition, the channel's OK LED will start flashing at 1Hz to indicate that the OK state is restored.
After ten seconds, the BYPASS LED will go off, and alarming is enabled. The RESET switch on the
System Monitor front panel must be pressed to stop the OK LED from flashing.
5

Ramp Differential Expansion Monitor Operation
LED DISPLAY
AB
CONDITION
OK
RELAY DRIVE *
•OK •CHANNEL A AND B IN OPERATING RANGE ON
•
0
OK
OK
0
•
RESPECTIVE CHANNEL A OR B TRANSDUCER
IN NOT OK CONDITION. * OFF *
0OK 0
MONITOR IN SELF TEST, OR BOTH
TRANSDUCERS IN NOT OK CONDITION OR
BYPASSED. *
OFF *
*
OK 0
FLASHING AT 5 Hz = ERROR ENCOUNTERED
DURING CYCLIC TEST. READ ERROR MESSAGE
SEE SECTION 12.
ON
•
OK
FLASHING AT 1 Hz = TRANSDUCER
HAS BEEN NOT OK SINCE LAST
RESET.
ON
•
84413-01
5OK
NOTE: EACH CHANNEL IN THE SYSTEM CONTROLS THE OK RELAY. THEREFORE, EITHER CHANNEL CAN CAUSE A
NOT OK RELAY CONDITION (DEENERGIZED RELAY)
*MONITOR CAN BE BYPASSED TO RESTORE RELAY OK CONDITIONS TO THE REST OF THE RACK
•
•
•
6

•
LED DISPLAY
LONG SHORT
CONDITION
•BYPASS •
MONITOR IN DANGER BYPASS MODE
SYSTEM IN POWER-UP MODE
USER-INVOKED SELF TEST IN PROGRESS
MONITOR BYPASSED
CALIBRATION MODE
*
BYPASS
*
MONITOR OVERRANGE DURING CALIBRATION
•
•
Ramp Differential Expansion Monitor Operation 84413-01
6BYPASS
7