73-R Rotary Monitor

The 73-R, rotation monitoring system, can measure rotor speed using a non-contacting tachometer with a built-in amplifier. When the rotor speed exceeds or drops below a preset value, an alarm can be triggered. There are two alarm set points, one for over-speed and one for under-speed. During startup, the under-speed alarm output can be inhibited (power-on inhibition function). The monitor is equipped with transistor outputs.

Features

Small size (96 x 48 x 90.4mm, 300g)
Easy installation into control panels (DIN standard 92 x 45mm rectangular opening)
Cable between monitor and tachometer can be extended to 100 meters
Built-in power supply for tachometer
0.3Hz~30kHz frequency response
4~20mA output proportional to rotor speed
Inhibition of alarm (LO) output function during startup
Parameter settings (sampling time, pulse number/rpm, alarm delay time, alarm point setting, etc.) are easily made at the front panel
Key lock function to prevent accidental tampering
Free power supply (AC85-264V, 50/60Hz)
Measurement of moving distance such as on a conveyor is also available

Front & Rear Panels

Keys on Front Panel

Terminals on Rear Panel

AL I	HI Warning
AL II	LO Warning
FG	Frame Gland (package ground)
COM	Common Terminal
NO	Normally Open (action when closed)
NC	Normally Closed (action when opened)

No.	Function
1	AL I Arrow Lamp	Illumination (red) at the time of output upper limit
2	AL II Arrow Lamp	Illumination (red) at the time of output lower limit
3	AL I Key	Setting and confirmation of output upper limit
4	AL II Key	Setting and confirmation of output lower limit
5	MODE Key	Push and hold for 3 seconds to select parameter
6	Key	Push to move decimal place
7	Key	Numerical value change for parameter and limit setting
8	SET Key	Push to accept parameter and limit setting

Rotation Speed Monitor	73-R	1 Piece
Tachometer (built-in amp, 1m cable)	ML-06	1 Piece
Extension Cable (3 cores shielded cable)	□□m	1 Piece

Tachometer ML-06 (Built-in Amplifier)

Specifications

If a gear is used as the target, module of more than 2.5 is required.
Installation gap: 1.0mm±0.5mm
Target: Steel gear

Frequency Response

DC~10kHz (sin wave)

Operating Temperature

-20°C~105°C

Waterproof

IP 66 JIS F8001

Vibration Resistance

JIS E4031 5A (40Hz10G)

Output

2V~5V (connected to monitor)

Power Supply

DC 5V~18V (supplied from monitor)

Options

1. Extension Cable
2. Flexible Armored Cable