Dametric TVD-M2 User manual

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 1(8)
TVD-M2 / TVD-M3
TOUCHPOINT VIBRATION MONITOR
USERS MANUAL

Contents
1.TECHNICAL SPECIFICATION ................................................................................................... 2
2.DESCRIPTION .............................................................................................................................. 3
3.HANDLING ................................................................................................................................... 4
4.SETTINGS ..................................................................................................................................... 5
5.CONNECTION .............................................................................................................................. 7
6.TROUBLE SHOOTING ................................................................................................................ 8
7.CONTACT ..................................................................................................................................... 8
dametric

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 2(8)
1. TECHNICAL SPECIFICATION
Article number: Dametric Valmet SKC
TVD-M2 TVD-M2 VAL0123130 SKC9826773
TVD-M3 TVD-M3 VAL0308989 --
Power supply:
TVD -M2 115 to 230 VAC, +5%/-10%, 48-62 Hz
TVD -M3 24 VDC, ±10%
Power consumption: Max 20VA
Temperature limit: 0 to +70 °C
Enclosure: Polycarbonate box, aluminum front,
Size Width = 150, height = 75, depth = 110 mm
Sealing: IP20
Mounting: DIN-rail or two 4-mm screws
Weight: 0.9 kg
Transducer: VIM-T2, TVD-T1, TVD-T2 or TVD-T2S.
Amplifier: Voltage input
Sensitivity 100mVrms = 100%
Highpass filter: 200Hz
Lowpass filter: Selectable, 10kHz or 40kHz (depending on transducer)
Front display: Led bar graph, scaled 0 - 100%, 5 % per led
Led, yellow indicating active alarm limit outputs
Led, green, indicating active production input
Led, green, indicating power on
Location attenuator: Adjustable in 16 steps between 100 and 21 % of normal gain
Production attenuator
Level: Adjustable to 0-50% of normal gain by use of a single turn potentiometer
Freq. response: See 4.4
Control input: A closed input initiates the production attenuator. The input must be
galvanically isolated.
Signal output: Galvanically isolated analogue current signal, 4-20 mA, low pass filtered to
1Hz, max 800Ω load
Headset output: Audio signal for headset, 3.5mm phono contact
Alarm limit 1,2: Adjustable, 0 to 100 %, single turn potentiometers
Alarm output 1,2: 1-pole toggling relay contact, max. 230Vac, 1A, 200W
Connection: Detachable screw connectors
CE approval: EN50081-2:1993, EN50082-2:1995, 89/336/EEC.

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 3(8)
2. DESCRIPTION
The TVD-M2/M3 monitors are used together with a vibration transducer to measure the touch point
vibrations in a pulp refiner.
The unit will work in the calibration mode or in the production mode. In the calibration mode the
unit has the highest sensitivity to detect the touch point without unnecessary plate wear.
In production mode, the unit will work with lower gain and will then work as a part in the plate clash
protection system. The modes are selected by an input logic signal.
The amplifier excites the transducer with a constant current. The transducer includes a built in signal
conditioner, and the signal output is superimposed on the feeding constant current. The transducer
signal is amplified, filtered and then monitored on both the front display and on the current signal
output.
The front display consists of a 20-segment led ramp and normally indicates the touch point signal
level.
The signal level is constantly compared with two adjustable alarm limit levels. The output is
deactivated when the signal level exceeds the limit level, which is adjustable by one turn
potentiometers.
If any of the limit push buttons is pressed, the corresponding alarm limit is displayed on the internal
led ramp and also monitored on the external analogue output.
The signal can be attenuated for production mode by a closing of an input. A single turn
potentiometer and a 4-pole dipswitch set attenuation and frequency response.
The signal can be attenuated for compensation of different transducer location, different type of
refiners and also the refiner main motor speed. A 4-pole dipswitch sets the attenuation.
The signal level is also amplified to a headset output. The headset is connected to a phono contact on
the top of the unit. The headset is used to listen to the actual touch point sound. The audible signal is
not affected by the dip-settings for transducer location or production gain.
The unit works together with four different type of transducers.
The VIM-T2 for touch point frequencies between 200Hz and 10kHz.
The TVD-T1 for touch point frequencies between 200Hz and 40kHz. This transducer is mounted on
the TDC-transducer and is normally used in the CD-refiners.
The TVD-T2 for touch point frequencies between 200Hz and 40kHz. The TVD-T2 is mounted on
one of the bolts for the plate holder.
The TVD-T2S has the same mounting method and frequency range as the VIM-T2 but has ten times
higher sensitivity. This transducer is normally used in the Conflo refiner.
There are two types of cables to be used between the unit and the transducers. The VIM-T2 uses the
cable K-VIMS25 while all other transducers use the cable K-TVDS25.
The TVD-M2 includes an AC/DC power unit, which converts and isolates the 115/230 VAC power
supply to the internal +12V and -12V DC-voltages.
The TVD-M3 is powered from a 24VDC source and includes a DC/DC converter for the internal
supplies.

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 4(8)
3. HANDLING
The 20 bar graph display indicates the Touch Point Vibration Signal or the alarm limit levels when
any of the push buttons is activated.
Limit 1.
 Push the switch to read the limit level on the bar display and adjust the corresponding
potentiometer to a chosen limit level.
 The yellow led diode is lit when the signal level is lower than the limit level.
Limit 2.
 Same function as limit 1.
 If both limits are used, this limit level is normally adjusted to a higher level than limit 1.
Production Attenuator.
 This potentiometer is used to change the attenuation during the production mode. Usually the
signal level will increase while the segment plates wears. The potentiometer is used to adjust
the touch point signal to a desirable level. Limit 1 can then be used as a warning level while
limit 2 can be used for interlocking.
 The potentiometer has no effect in the calibration mode.
Production Indication.
 This green led indicates that the production input is activated and that the unit works with
lower sensitivity.
Power supply.
 This green led is lit when the unit is powered.
D/A Production
Limit 1 Production Limit 2
TVD-M2
Touchpoint Monitor
On
Touchpoint Level %
201005030 40 8060 70 90 100

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 5(8)
4. SETTINGS
The dipswitches are located
at the top of the unit and
should be adjusted during the
installation.
4.1 Transducer location setting
This setting is to be adjusted depending of the placement of the transducer, the type of refiner and
also the main motor rotation speed. The correct setting has to be established upon testing, but the
examples can serve as guidelines. The default setting at delivery is 66%.
SW1 /1 /2 /3 /4 % sensitivity Transducer location (* default setting)
off off off off 100 VIM-T2 on a ROP 24, > 1200rpm
on off off off 75 VIM-T2 on a ROP 32/36, > 1200 rpm
off on off off 66 * VIM-T2, TVD-T2 mounted on the plate holder bolt
off off on off 50 TVD-T2S on a Conflo refiner
off off off on 33 TVD-T2S on a RGP refiner, < 1200 rpm
TVD-T1 on the TDC-sensor
on on on on 20 TVD-T2S on a RGP refiner, > 1200 rpm
4.2 Production mode adjustment
The digital input, DI+PROD, is activated during the production mode, and will activate an attenuator
and a filter in the unit. An activated input is indicated by a led in the front panel, marked
"Production".
4.2.1 Frequency response
The dipswitch SW2 sets the frequency response during the production mode. The response can be
seen in the graphs on the following page. The high pass filter can be set in the range of 0.3 to 19 kHz,
and is used to reduce the low frequency signals during production. The higher frequency setting, the
higher the attenuation will be at lower frequencies. The setting has to be established upon testing, and
is dependent of the type of the plates and the rotation speed.
SW2 /1 /2 /3 /4 frequency in kHz. (* Default setting)
off off off off 0.3
on off off off 2 VIM-T2, TVD-T2S
off on off off 4 * ” “
off off on off 6 ” “
off off off on 8 ” “
on on on on 19 TVD-T1, TVD-T2
The settings together with the transducer type setting are shown in graph 4.4.1 and 4.4.2.
4.2.2 Gain
The gain is adjusted with a single-turn potentiometer in the front of the unit, and can be set between 5
and 50% of the normal gain. Adjust the potentiometer to the maximum gain and the lower the gain
during production.
4.3 Transducer Type setting
The low-pass filter must be set according to the transducer.
SW3 /1 /2 /3 /4 kHz Type
off off off off 10 TVD-T2S, VIM-T2 (Default setting)
on on off off 15 Not used
off off on on 35 Not used
on on on on 40 TVD-T1, TVD-T2

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 6(8)
4.4 Low gain filter response
4.4.1 With 10 kHz transducer type setting
a 0.3 kHz b 2 kHz c 4 kHz d 6 kHz e 8 kHz f 19 kHz
4.4.2 With 40 kHz transducer type setting
a 0.3 kHz b 2 kHz c 4 kHz d 6 kHz e 8 kHz f 19 kHz
1k 10k 40k frequency
gain
0.2
0.4
0.6
0.8
1
100
a
b
c
d
e
f
1k 10k 40k frequency
gain
0.2
0.4
0.6
0.8
1
100
a
b
c
d
e
f

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 7(8)
5. CONNECTION
The cables are connected to the detachable
screw connectors at the bottom of the unit.
5.1 K1 - POWER SUPPLY
TVD-M2:
115-230 VAC Mains Voltage
Live K1/1
Neutral K1/6
TVD-M3:
24VDC Mains Voltage
Plus K1/1
Minus K1/4
5.2 K2 - ALARM OUTPUTS
Function normally normally
closed open com
Limit 1 K2/1 K2/2 K2/3
Limit 2 K2/4 K2/5 K2/6
Explanation. The above describes the state
of a not active output.
When the output is active (the led is lit and
the touch point level is lower than the limit
level)
the normally open contact is closed to the common contact.
5.3 K3 - LOGIC INPUT, TRANSDUCER, SIGNAL OUTPUT, GROUND
K3/1-2 Logic input, production
K3/1 Close this input to initiate production mode
K3/2 The input must be free from foreign potential
K3/3-5 Transducer signals K-TVDS25, K-VIMS25
K3/3 Transducer + white + brown
K3/4 Transducer - green + yellow
K3/5 Transducer, cable shield see below
K-TVDS25: Connect the shield to K3/5.
K-VIMS25: Isolate the inner shield. Connect the outer shield to K3/5
K3/6-8 Signal current output
K3/6 + 4-20 mA
K3/7 common
K3/8 cable shield
K3/9 Ground
K3/9 Connect this pin direct to the protective ground close to the unit. Use a copper wire with
an area of 2.5 mm2.
5.4 K4 – HEADSET
Connect the cable from the headset (IR-HS) direct to the phono-contact in the upper part of the unit.
It is also possible to connect the cable K-HS5 between the headset and the unit
K1 K2 K3
K1 K2 K3
Pro-
duction
control
input
Signal
output
4-20mA
Trans-
ducer
cable
Limit 2
Relay
output
Limit 1
Relay
output
115 - 230 VAC
Mains supply
input
TVD-M2
VAL0123130
SKC9826773
ground
TVD Touchpoint Monitor
shield shield
-
+
-
+
dametric
Serial:628
Pro-
duction
control
input
Signal
output
4-20mA
Trans-
ducer
cable
Limit 2
Relay
output
Limit 1
Relay
output
24 VDC
Power supply
input
TVD-M3
VAL0308989
ground
TVD Touchpoint Monitor
shield shield
-
+
-
+
dametric
Serial:628

Dametric TVD-M2 / TVD-M3
TVD-M2-M3 EN.docx May 26, 2011 / BL 8(8)
6. TROUBLE SHOOTING
Symptom
Possible failure
Action
The ON led is not lit
No power attached
Check the main supply voltage at K1.
Check the main supply jumper at K1.
If the supply and jumpers are correct, the unit is defective.
Note. The unit is protected against over voltage by PTC-resistors. If these are activated,
the mains power supply must be shut off for at least 2 minutes.
The LED ramp is constantly indicating 100%
Transducer fault or cable fault
Is the cable connected to the transducer?
Check the transducer and the cable.
At normal conditions, the nominal voltage across the transducer is about 10.5Vdc.
(+ to K3/3, - to K3/4). If the voltage is below 6.0V or above 15V, the unit is defective.
7. CONTACT
Sales, development, production and service:
Dametric AB
Jägerhorns Väg 19, SE 141 75 Kungens Kurva, Sweden
Phone: [phone] Telefax: [phone]
E-Mail: [e-mail] Website: www.dametric.se
dametric