Hasler Sound 2 - Sound 2 Versions

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Description and principle of operation
Iss. a – Translation of the original version
2024/01/05
Doc. Ref. : SOUND2.940.001
2.3. SOUND 2 VERSION
There are 2 versions of the SOUND 2 system:
− SOUND2 Advanced
− SOUND2 Premium
The difference between these 2 versions lies in the security level or maintenance profile, as shown in the
following table:
Menus
Security level/Profile
Operator
Advanced
Maintenance
Premium
Maintenance
Alarm
√
√
√
Parameters
√
Measurements
√
√
√
Calibration
√
√
√
Crosstalk
√
Outputs
√
√
System
√
√
√
Diagnostics
√
√
2.4. OPERATION
The SOUND2 equipment is a listening system for mills. It is an electro-acoustic device based on monitoring
the filling level of ball mills. It can be likened to an electronic ear that picks up the sounds of the mill.
This noise varies with the product and the mill filling level.
It is a mill filling level indicator with a digital detection system that can accurately identify sound levels: soft,
muffled sounds when full or loud, high-pitched sounds when empty.
2.5. CHARACTERISTICS
2.5.1. Technical characteristics
Characteristics
Values
Power supply (230 V version):
− Input
− Frequency range
Voltage range 88 to 264 Vac
47 to 63 Hz
The AC/DC power supply unit is protected
against short-circuits/overloads and
overvoltage
Adjustable gain
0 dB to 45 dB
Working frequency range
300 Hz to 4,500 Hz
Output voltage
0-10 V, with 1 kΩ minimum
Output current
0-20 mA or 4-20 mA, with 600 Ω maximum
Power consumption
8 W
Specifications of the relay contacts (1-2), (3-4),
(5-6) on terminal block J2:
− Max. switching current/voltage:
− Maximum switching power:
− Contact resistance:
− Insulation resistance:
2 A at 250 Vac or 2 A at 24 Vdc
48 VA
100 mΩ max
1,000 MΩ min (at 500 Vdc)
A
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