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8 | © Danfoss | Energy Meters | 2019.03
VU.IG.B9.02
Installation guide
SonoSelect and SonoSafe
Wireless OMS communication module, 868.95MHz with 2 pulse inputs
Once installed the meter will display the icon for wireless communication and pulse inputs in loop 2 of
the display. The two pulse inputs can be programmed independently of each other (see specification for
pulse input module).
Standard
Open Metering System (OMS) issue 4.0.2
Frequency
868.95 MHz
Antenna
Internal
Transmission power
10mW (Max. 25mW; 13,9 dBm)
Mode
T1 mode
Encryption
AES 128 bit encryption (mode 5), Parameterized Static key
Sending interval
Battery power: Fixed network 15 min
Walk by: 2 min
Mains power: 16 seconds
Telegram
Standard telegram*
Battery life time
16+1 year (with pulse inputs off)
Addressing
Serial number:
sssss
vvNNy
yWW
yWWsssss
: Secondary address
* See section with data telegram.
2 pulse input module
Once installed the meter will display the icon for pulse inputs in loop 2 of the display. Accumulated
volume is only readable by communication. The two pulse inputs can be programmed independently of
each other.
Pulse value
0.001 m³ to 1 m³ per pulse
Voltage supply
≤ 6.0 V
Source current
≤ 0.1 mA
High level input threshold
≥ 2 V
Low level input threshold
≤ 0.5 V
Pull-up resistor
100 kΩ
Pulse length
≥100 ms
Maximum frequency
≤ 5 Hz
Pulse inputs
According to EN1434-2, section 7.1.5 (Classification of pulse input devices Class IB)
Battery life time
16+1 year
* Suitable for both electronic switch and Reed contact.