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- Input / Output Specifications
Phase and Wiring Type: Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire and three-phase 4-wire
Input Frequency: 45 to 65 Hz
Rated Input Voltage: 220V AC (200V AC [100V + 100V] for single-phase 3-wire), 440V AC (127V AC, 277V AC for three-phase 4-wire)
Input Voltage Range: 0 to 264V AC for 220V AC input; 0 to 520V AC for 440V AC input
Allowable Input Voltage: 1.2 times rated voltage (continuous) or 1.5 times (for 10 seconds)
Rated Input Current: 5A AC
Allowable Input Current: 1.2 times rated current (continuous) or 2 times (for 10 seconds)
Approximate Consumed VA: Voltage input 0.4VA/phase, current input 0.01VA/phase
Maximum output frequency: 3Hz
- Standard Performance:
Accuracy Rating:
Active power: ±2.0% FS (equivalent to JIS C1111 grade 1.0)
rms voltage for each phase: ±2.0% FS (equivalent to JIS C1111 grade 1.0)
rms current for each phase: ±2.0% FS (equivalent to JIS C1111 grade 1.0)
Apparent energy: ±2% of rdg (with rated input)
Active energy: ±2% of rdg (with rated input) (integration not performed on minus “-” side)
Reactive energy: ±2% of rdg (with rated input) (for UPM100 with optional measuring function)
Regenerative energy: ±2% of rdg (with rated input)
Optional electric energy: ±2% of rdg (with rated input)
Frequency: ±1Hz
Computing Accuracy: Reactive power, instantaneous power factor, apparent power 45 to 65Hz: ±1dgt (value calculated from measured value)
Integral Low-cut Power: 0.05 to 20.00% of rated power
Operating Temperature and Humidity Ranges: 0 to 50°C / 5 to 90% RH (no condensation allowed)
Effect of Power Factor: At 45 ≤ f ≤ 65Hz
Active power: ±2.0% rdg with respect to power factor 1; cosφ = ±0.5
Reactive power: ±2.0% rdg with respect to reactive factor 1; sinφ = ±0.5
Effect of Supply Voltage Fluctuation: ±0.1% FS (instantaneous value) /85 to 264V AC
Effect of Input Frequency: ±0.1% FS (instantaneous value) /45 to 65Hz
Effect of Ambient Temperature: ±2% FS (instantaneous value) /10°C
Power Supply: 85 to 264V AC
Consumed Power: Maximum 5VA (without display function), Maximum 7VA (with display function)
- Communication Specifications (RS-485 Communication)
Communication Specifications: RS-485 interface
Communication Protocols: PC link (with SUM, without SUM), MODBUS (ASCII, RTU), UPM01 protocol (effective only when “Integral resolution Wh” is specified)
Transmission Distance: Approx. 1.2 km max. (Using twisted-pair cable with 24 AWG shield)
Maximum Number of Connected Units: 31 (units that can be connected to PC or other device in multi-drop connection)
Connection Type: Conforming to RS-485
Cable: A-, B+, SG: Balanced twisted-pair cable
Terminating resistor: 120 Ω (sold separately; L3035RK)
Transmission Type: Half-duplex communication
Synchronization Type: Start-stop synchronization
Baud Rate: 2400, 9600 or 19200 bps
Data Format:
Start bit: 1 bit
Data length: 7 or 8 bits
Parity: None, even or odd
Stop bit: 1 or 2 bits
Error Detection: Checksum (1 byte, simple addition), CRC-16, LRC (no protocolbased flow control)
End Character Specification: Yes (CR)
Address (Station Number) Setting: Set in range from 1 to 99 (1 to 31 recommended)
