Shinkawa VM-7 Series, System Manual, Page: 47 / 80

VM-703 TACHOMETER & ECCENTRICITY
MONITOR MODULE
Page 1 of 5
VM-7 SERIES
SPECIFICATIONS
30903E1.2
Issued Feb.
2009
Revised Mar. 2010
Non-incendive *
1
Custom set up Tropical spec. I/O terminal block for:
1 Class I Division 2 CSA 1 VM-761 instrument rack
2 VM-762 instrument rack
*1 In future
INPUT
Input points (tachometer) : Max. 2 ch
Input points (eccentricity) : Max. 1 ch
Input impedance
: Approx. 50k Ω
(Magnetic pickup input : Approx. 5k Ω )
Max input voltage range : 100Vp-p
Hysterics set value
: 1V, 2V, 5V
INPUT TRANSDUCER for TACHOMETER
(Only Channel 1 and Channel 2)
Proximity transducer : FK-202F, RD-05A
Magnetic pickup : MS-160, MS-240
Input block : 1ch and/or 2ch circuit
INPUT TRANSDUCER for ECCENTRICITY (Only Channel 3)
Proximity transducer : FK-202F, VK-202A, VK-202P, VK-302P
VC-020
Input block : 3ch circuit
OUTPUT
Indicators : OK LED (Green)
TRG LED (Yellow)
Monitor output : Input signal is output via a buffer amplifier.
Location : Front panel and rear panel
Output impedance : Approx. 100 Ω (Max. 0.5mA)
Pulse output : Shaped pulse signal is output via a buffer amplifier.
Location : Front panel and rear panel
Output impedance : Approx. 1k Ω (Max. 0.5mA)
Signal level : 0V (V
OL
), 5V (V
OH
)
Recorder output : Voltage or current output proportional monitor range.
Output range : 1 to 5VDC, 4 to 20mADC
0 to 5VDC, 0 to 10VDC
I/O conversion accuracy: ±1% of F.S. at 25°C*
2
±2% of F.S. at 0°C to 65°C* 2
Max. load resistance : 600 Ω (current mode)
Output impedance : Approx. 500 Ω (voltage mode)
Insulation resistance : 10M Ω at 100VAC
Burnout function : Downscale 0%
Downscale 0mA / 0mV
Transducer power supply:
Proximity transducer : -24VDC / 25mA Max.
Alarm contact :
Number of relay : 6 points (logic changeable)
Contact type : Dry contact (SPDT)
Contact capacity : 250VAC / 5A, 30VDC / 5A
Note) *2
At calibrate frequency.
SPEED RELAY (Only Channel 1 and Channel 2)
Speed relay set point : 4 points (HH, H, L, LL), from 0.1rpm to 100% of
monitor range, field changeable.
Speed relay hysterics : 0 to 100 rpm (1 rpm step, field changeable)
Speed relay mode : Over speed / Under speed
Speed relay set accuracy : ±1 digit or less (on digital indicator)
Relay reset
: AUTO-RESET / SELF-HOLD
Relay contact mode : Normally de-energized / Normally energized
ALARM (Only Channel 3)
Alarm set point : Eccentricity (P-P) monitoring
2 points (DANGER, ALERT),
from 0 to 100% of monitor range, field changeable
Eccentricity (Direct) monitoring
4
points
(H-DANGER, H-ALERT, L-DANGER, L-ALERT),
from 0 to 100% of monitor range, field changeable
Alarm set accuracy : ±(0.2% of F.S.+1digit) or less at 25°C
Alarm set repeat : ±1digit or less at 25°C
Alarm delay time : 0.5, 1 to 99 sec (1sec step, field changeable)
Alarm reset : AUTO-RESET or SELF-HOLD field changeable.
Alarm contact mode : Normally de-energized / Normally energized
Alarm bypass function : Block off alarm output (DANGER)
TACHOMETER
Min. pulse width : 50µsec
Min. measured frequency : 0.01Hz
Max. measured frequency : 10 kHz
Input voltage
: Less than 100V p-p
ROTOR SPEED MONITORING
Accuracy : ±(0.003% of rdg. +1digit) at 25°C
±(0.03% of rdg. +1digit) at 0°C to 65°C
Min. indicated frequent : Lower of 1Hz or under speed setting.
No. of input pulse : 1 to 200 pulse / rev.
ROTOR ACCELERATION MONITORING
Accuracy : ±20 digit at 0 to 65°C
No. of input pulse : 1 to 200 pulse / rev.
(60 or 120 pulse / rev. is recommended.)
REVERSE ROTATING MONITORING
Accuracy : ±(0.003% of rdg. +1digit) at 25°C
±(0.03% of rdg. +1digit) at 0°C to 65°C
Min. indicated frequent : Lower of 1Hz or under speed setting.
No. of input pulse : 1 to 60 pulse / rev.
Note)
The angle between the sensors shall be
as follows :
θ s=(90+360n)/Z
[n=0,1,2,3•••, Z:Numbers of the teeth]
θ s is recommended to be within 90 to
270° and to satisfy the above equation.
ECCENTRICITY MONITORING
Phasemarker : Selection from three kinds
Ch1 input ,
Phasemarker 1 (from VM-741 PhaseMarker)
Phasemarker 2 (from VM-741 PhaseMarker)
P-P Monitoring : Accuracy : ±1% of F.S. at 25°C* 2
±2% of F.S. at 0°C to 65°C* 2
Measure range : 1 to 300rpm, 1 to 600rpm
Output block : 3ch circuit
Direct Monitoring : Accuracy : ±1% of F.S. at 25°C
±2% of F.S. at 0°C to 65°C
Measure range : 1Hz or less.
Zero shift function : -50 to +50% of the monitor range.
Output block
: 4ch circuit
Note) *2 At calibrate frequency.
Specification
Model Code / Additional Spec. Code ( )
No entry if additional
spec, code is not specified.
VM-703 /NB1 /CSU /TRP /TB
Forward
direction
Sensor for CH2
Sensor for CH1
θ s