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