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¶ ROSSMA IIoT-AMS Device Installation
¶ General Requirements
IMPORTANT: Installation and configuration of meter-switches must be performed by qualified personnel.
¶ Installation Site Requirements
When selecting an installation location for the meter-switch, consider:
-
Device version compatibility with installation zone:
- General industrial version — for normal conditions
- Explosion-proof version (Ex) — for hazardous areas
-
Protection from aggressive environments:
- Exposure of aggressive chemicals to the housing is not permitted
- Exposure of aggressive environment to internal PCB elements is not permitted
-
Radio communication conditions:
- Reliable LoRaWAN network coverage at installation site
- Absence of significant shielding obstacles (thick metal walls, underground rooms)
¶ Mounting Methods
Mounting options:
- On vertical or horizontal surface using mounting plate
- On DIN rail using adapter (purchased separately)
- On pipe or other structure using clamps
- Directly to sensor
- With cable ties to support structure
¶ Battery-Powered Device Installation
¶ General Installation Procedure
-
Preparation:
- Remove top cover (unscrew 4 screws)
- IMPORTANT: Disconnect battery before connecting cables
-
Equipment connection:
- Prepare cable of required length (KSPV 2×0.5 recommended)
- Strip cable on both ends (approximately 5 mm)
- Connect cable to terminals according to device diagram
- Route cable through cable gland
-
Power connection:
- Connect battery connector to board connector
- Check LED indication
-
Closing the housing:
- Ensure silicone gasket is properly installed
- Secure cover with screws, tightening in cross pattern
Explosion-proof version: When installing in hazardous areas, follow PUE Chapter 7.3 "Electrical installations in explosive areas" and GOST 31610.7-2012.
¶ 220V Powered Device Installation (MODBUS)
¶ Installation Procedure
Step 1: Prepare installation site
- Select location protected from direct sunlight
- Ensure access for maintenance
- Install DIN rail (if using rail mounting)
Step 2: Mount the device
- On DIN rail: snap adapter onto rail until it clicks
- On wall: use mounting brackets and 4mm screws
- In hazardous area: use only explosion-proof enclosure
Step 3: Connect power
- Turn off 220V power at main circuit breaker
- Connect phase (L) and neutral (N) to power terminals
- Connect ground (PE) to housing
- Verify connections with multimeter
DANGER: Work with 220V voltage must be performed only by qualified electrician!
Step 4: Connect RS-485 (for MODBUS)
- Connect A+, B-, GND wires according to diagram
- Use 120 Ohm terminators at line ends (for lengths >50m)
- Ensure correct polarity (A+ to A+, B- to
Step 5: Verify connection
- Apply 220V power
- Wait for PWR indicator to light up
- Check ACT indicator blinking (data exchange with devices)
- Ensure Err is not constantly lit
¶ Cable Requirements
¶ For RS-485 (MODBUS)
Recommended cable:
- Shielded twisted pair (STP)
- Cross-section: 0.5-0.75 mm² (AWG 20-18)
- Characteristic impedance: 120 Ohm
- Shield grounded on one side
Cable examples:
- KVVG 2×0.75 (for industrial conditions)
- KVBbShv 1×2×0.75 (for hazardous areas)
- Cat5e/Cat6 (for short distances <50m)
Maximum RS-485 bus length: 1200 meters
¶ For 1-Wire
Recommended cable:
- Twisted pair (UTP Cat5 or higher)
- Shielded cable for industrial conditions
- Cross-section: 0.5-0.75 mm²
Maximum line length: 100 meters
¶ For Analog Sensors (4-20 mA)
Recommended cable:
- KSPV 2×0.5
- Shielded twisted pair for long lines
¶ Device Indication
¶ Battery-Powered Devices (ANALOG, ESD, PULSE, 1-WIRE, VPM)
| Indicator | Description |
|---|---|
| ACT (Activity) | Blinks when receiving data / registering events |
| LoRa | Blinks during LoRaWAN transmission/reception |
| Status blinks periodically | Data transmission to server in progress |
| Error blinks 1 time/sec | Communication module not detected |
| Error blinks 3-3 | Unable to register on network |
| Error blinks 5-5 | Data transmission error |
¶ MODBUS Devices (220V)
| Indicator | Description |
|---|---|
| PWR | Power supplied |
| ACT | MODBUS protocol data exchange |
| LoRa | LoRaWAN data transmission/reception |
| Err | MODBUS protocol exchange error |
| NET | NB-IoT network connection |
| Success | Successful NB-IoT transmission |
¶ Control Buttons
| Button | Function |
|---|---|
| RESET | Device restart |
| Measure and Send | Forced measurement and data transmission (ANALOG) |
¶ Related Pages
- Battery Replacement — battery replacement instructions
- Communication Protocols — control commands and data formats
- ROSSMA Configurator — device configuration
- Quick Start — first network connection
- Device Catalog — all ROSSMA IIoT-AMS models