SHINKAWA VM-703B TACHOMETER & ECCENTRICITY MONITOR MODULE
VM-703B TACHOMETER & ECCENTRICITY MONITOR MODULE
NPUT
Input points (tachometer) : 2 points
Input points (eccentricity) : 1 point
Input impedance : Approx. 50kΩ
(Magnetic pickup input : Approx. 5kΩ)
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 channel : Channel1. Channel2
INPUT TRANSDUCER for ECCENTRICITY (Only Channel 3)
Proximity transducer : FK-202F, FK-302F, VK-202A, VK-202P, VK-302P
VC-020
Input channel : Channel3
SYNCHRONIZED SIGNAL SOURCE
VM-703B : Channel1 (this module)
VM-741B : Input via internal mother board(2ch)
OUTPUT
Indicators : OK LED (Green)
When channel is normal : ON, When alarming : Flashing
TRG LED (Yellow)
When rotational pulse is not detected : ON
When rotational pulse is detected : Flashing
Monitor output : Input signal is output via a buffer amplifier.
Location : BNC (Front) and connector (Back)
Output impedance : Approx. 100Ω (Max. 5mA)
Pulse output : Shaped pulse signal is output via a buffer amplifier.
Location : BNC (Front) and connector (Back)
Output impedance : Approx. 1kΩ (Max. 5mA)
Signal level : 0V (VOL), 5V (VOH)
Recorder output : Voltage or current output proportional to measurement
value.
Measurement value of each channel can be assigned to
any output channel of its own module.
Number of output points : 4 points
Output range : 1 to 5V, 4 to 20mA,
0 to 5V, 0 to 10V
I/O conversion accuracy: ±1% of F.S. at 25°C*1
±2% of F.S. at 0°C to 65°C*1
Max. load resistance : 600Ω (current mode)
Output impedance : Approx. 500Ω (voltage mode)
Insulation resistance : 10MΩ at 100VDC
Burnout function : Downscale 0%
Downscale 0mA / 0mV
Transducer power supply:
Proximity transducer : -24VDC / 25mA Max.
Contact output :
Number of relay : 6 points (logic changeable)
Contact type : Dry contact (SPDT)
Enagization method : Normally de-energized or
Normally energized field
changeable
Contact capacity : 250VAC/5A, 30VDC/5A
Note) *1 At calibrate frequency.(only Eccentricity)
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 (1rpm 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 or SELF-HOLD field changeable.
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 -50 to +50% 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 to 99 sec (0.1 sec step, field changeable)
Alarm reset : AUTO-RESET or SELF-HOLD field changeable.
Alarm bypass function : Block off alarm output (DANGER)
TACHOMETER
Min. pulse width : 50µsec
Min. measured frequency : 0.01Hz
Max. measured frequency : 10kHz
Input voltage : Less than 100Vp-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. display rotation speed*2 : Regardless of the enable or disable the setting, it
display until the rotational speed of the lower of
the under-speed relay (L, LL).
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. display rotation speed*2 : Regardless of the enable or disable the setting, it
display until the rotational speed of the lower of
the under-speed relay (L, LL).
No. of input pulse : 1 to 60 pulse/rev.
Note)*2 Rotational speed below the measurement limit frequency of the monitor can not
be set.The rotational speed of the lower limit, can be calculated by the following formula.
Rotational speed of the lower limit [rpm]
=0.01[Hz]×60×(Gear ratio / Pulse number per revolution)
Note)
The angle between the sensors shall be
as follows :
θs=(90+360n)/Z
[n=0.1.2.3•••, Z:Numbers of the teeth]
θs is recommended to be within 90 to
270° and to satisfy the above equation.rotation