Danfoss SonoMeter 40 Ultrasonic Energy Meters Installation Guide
- June 1, 2024
- Danfoss
Table of Contents
Danfoss SonoMeter 40 Ultrasonic Energy Meters
Product Information
Specifications
- Product Name: Energy Meter SonoMeter 40
- Power Supply: 24 V power supply module and 230 VAC transformer
- Input Voltage: 12…42 VDC or 12…36 VAC (for external power supply), 230 VAC (for transformer)
- Output Voltage: 12 V
- Rated Current: 0.7 A
- Rated Power: 6 W
- Voltage Range: 120-240 VAC
- Frequency Range: 50/60 Hz
- Working Temperature: Not specified
- IP Class: Not specified
Product Usage Instructions
-
Installation
The Energy Meter SonoMeter 40 can be powered using either the 24 V power supply module or the 230 VAC transformer. -
Powering Options
If the external power supply voltage is connected to the 24 V power supply module, the internal backup battery is not used. If the external power supply is turned off, the meter is powered from the internal backup battery. -
Safety Requirements
Ensure that all connections are made according to safety standards when dealing with the 230V power supply. -
Installation with Communication Module
If the energy meter is equipped with a LoRa communication module, an additional connection cable must be connected between the LoRa module and the 24 V power supply module jumpers for powering up the LoRa communication module. -
Wiring Diagram
Refer to the provided wiring diagram for proper connections when setting up the Energy Meter SonoMeter 40.
FAQ
-
Q: Can I use a different power supply than the recommended one?
A: It is recommended to use either the specified external power supply or the 230 VAC transformer to ensure the proper functioning and safety of the energy meter. -
Q: What should I do if the internal backup battery needs replacement?
A: Contact customer support for assistance with replacing the internal backup battery of the energy meter.
Description
- The “24 V power supply module” is meant for the energy meter powering from an external power supply (12…42 VDC or 12…36 VAC) or with the 230 VAC transformer. The 24 V power supply module is mounted inside the meter.
- If the external power supply voltage is connected to the 24 V power supply module, the internal backup battery is not used. If the external power supply is turned off, the meter is powered from the internal backup battery.
Technical specification
Technical specification of “230 VAC transformer”
| Output | DC voltage | 12 V |
|---|---|---|
| Rated current | 0.7 A | |
| Rated power | 6 W |
Input
| Voltage range| 120…240 VAC
Frequency range| 50/60 Hz
AC| 0.044 A
Protection| Short circuit| Hiccup mode recovers automatically after the fault
condition is removed
Overload
Environment| Working temperature| -20…+45 °C
Other| IP class| IP66, fully isolated plastic case
Safety Requirements
- The transformer is powered by a life-dangerous 230 V voltage. Maintain only when voltage is switched off. Installation can be done only by qualified personnel.
- Module and transformer can only be used for energy meter power supply, by the user manual. The energy meter must be intact and fully complete.
- Lithium battery is prohibited to charge, short circuit or keep above 80 °C temperature.
24 V power supply module installation
| • Carefully break back lid protective partitions marked “LOCK” with a flat
screwdriver or any similar tool
---|---
| • In the opened cavity, use a flat screwdriver to tilt the latch to the
outside and open the box
| • Break the rubber seal with a sharp tool in the cable-free hole and push
the power cable through it
| • Connect cable wires to the power supply module “24V” connector.(12…42 VDC
or 12 … 36 VAC).
---|---
| • Remove the battery from holders on the protective plate
• Plug-in module connector to the meter’s “B1” connector
• Plug in a battery connector to the module “B2” connector
• Insert an external power supply module on battery holders
• The power supply cable is locked in place by finger-pinching it into the fixture
• Attach the battery to a second battery holders
| • Make a short-circuit on “Service” pins to activate Service mode for configuration
• Open “E3_Configurator.exe”
• Read meter via an optical interface (or wired M-Bus if active) – 2400bps, Even parity, 8 Bits, 1 Stop bits
• Disable all active communication credits by entering “65535” on necessary fields.
• Click the “Write configuration” button to send the configuration to the meter
• Click the “OFF Service mode” button to exit from Service mode
| • The back lid is closed by squeezing it until it locks into place
| • The “LOCK” holes must be sealed with the supplier’s seals (waterproof
seals)
Note:
If an energy meter is equipped with a LoRa communication module, an
additional connection cable must be connected between the LoRa module and the
24 V power supply module jumpers for powering up the LoRa communication
module.
Wiring Diagram
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Climate Solutions• danfoss.com • +45 7488 2222.
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