Modbus
SDM120 Modbus Single Phase
Multifunctional Energy Meter
• Class 1.0 Accuracy
• 45A direct connect load
• RS485 port modbus RTU
• 2 pulse outputs
• 3 mode measurements
• 12 electrical parameters
• 17.5 mm width 1 module
• 35mm Din rail mounted
Specs
Voltage AC (Un) 230V
Voltage Range 176~276VAC
Base Current (Ib) 5A
Max Current (Imax) 45A
Mini Current (Imin) 0.25A
Starting current 0.4% of Ib
Power consumption <2W/10VA
Frequency 50/60Hz(±10%)
AC voltage withstand 4KV for 1 minute
Impulse voltage withstand 6KV-1.2uS waveform
Overcurrent withstand 30Imax for 0.01s
Pulse output rate 1000imp/kWh (default)
100/10/1 imp/kWh/kVarh (configurable)
Display LCD with blue backlit
Max. Reading 99999.9kWh
Accuracy
Voltage 0.5% of range maximum
Current 0.5% of nominal
Frequency 0.2% of mid-frequency
Power factor 1% of Unity
Active power 1% of range maximum
Reactive power 1% of range maximum
Apparent power 1% of range maximum
Active energy Class 1 IEC62053-21
Class B EN50470-3
Reactive energy 1% of range maximum
Environment
Operating temperature -25℃ to + 55℃
Storage and transportation temperature -40℃ to +70℃
Reference temperature 23℃±2℃
Relative humidity 0 to 95%, non-condensing
Altitude up to 2500 m
Warm-up time 10s
Mechanical Environment M1
Electromagnetic environment E2
Degree of pollution 2
RS485 output for Modbus RTU
The meter provides a RS485 port for remote communication. Modbus RTU is the protocol applied. For Modbus RTU, the following RS485 communication parameters can be configured from the set-up menu.
Baud rate: 1200, 2400, 4800, 9600
Parity: NONE/EVEN/ODD
Stop bits: 1 or 2
Modbus Address: 1 to 247
MID Approved
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