Overview
In an energy storage system, operators need not only DC metering but also control and analog signals.
DJSF1352-RN‑6 measures voltage (up to 1500V), current, power, and bi‑directional energy with 0.5% accuracy.
It features 2DI/2DO, 4‑20mA output, dual pulse outputs, event logging, and programmable alarms. RS485 supports Modbus.
Ideal for storage, industrial DC, and charging piles with external control. It reduces external components, enables alarm linkage, and simplifies remote monitoring.
Highlight
Dual DC Input, Flexible Config
- Dual independent channels (opt)
- Voltage 0-100V / 0-1500V
- Shunt 0-75mV / Hall 0-5V
- Individual PT/CT settings
- Bi-directional energy
High Accuracy Class 0.5
- Class 0.5 for V/I/P
- Max/Min logging
- Demand recording
- 12-month history
- Event logging
Rich I/O & Analog Output
- 2 relay outputs (2A)
- 2 digital inputs
- 4-20mA analog output
- Programmable alarm
- Linkage control
Flexible Comm & Power
- RS485 standard, dual opt
- Modbus/DLT645/DLT698
- Wide power 85-265V
- DC 12-48V optional
- -25℃~+65℃ operation
Function
| Measurement | Metering | I/O Functions | Others |
| DC Voltage (Channel 1) | Total Forward Active Energy | 2 relay outputs | 8 Tariffs (T1~T8) |
| DC Current (Channel 1) | Total Reverse Active Energy | 2 digital inputs | Peak/Flat/Valley/Deep |
| DC Power (Channel 1) | Tariff Energy (T1~T8) | 4-20mA analog output | Forward/Reverse Demand |
| DC Voltage (Channel 2) | Monthly Forward Active | Programmable alarm | 12-month History |
| DC Current (Channel 2) | Monthly Reverse Active | Linkage control | Data Freeze |
| DC Power (Channel 2) | Four-Quadrant Reactive (opt) | Extremum Logging | |
| Power Direction | Event Logging | ||
| Internal Temperature | Dual Pulse Output |
Specification
| Parameter | Specification |
| Voltage Input | DC 0-100V or DC 0-1500V (Refer to wiring diagram) |
| Current Input | Shunt: 0-75mV; Hall Sensor: 0-5V, 0-200mA |
| Accuracy Class | Class 0.5 |
| Energy Metering | Forward/Reverse Active Energy, 8 Tariffs (Peak/Flat/Valley/Deep) |
| Demand Recording | Forward/Reverse Active Demand |
| Historical Data | Last 12 months energy data |
| Extremum Logging | Max/Min Voltage, Current, Power with Timestamps |
| Event Logging | Digital I/O events, Programming events |
| Data Freeze | Instant freeze, Scheduled freeze |
| Digital Input | 2 dry contacts (optional) |
| Relay Output | 2 channels, 2A/30VDC or 2A/250VAC (optional) |
| Analog Output | 1 channel 4-20mA, Class 0.5 (optional) |
| Pulse Output | 2 energy pulses, 2nd switchable to second pulse |
| Communication | RS485 (standard), optional dual channels |
| Protocols | Modbus-RTU, DL/T 645-2007, DL/T 698 |
| Display | 8-segment LCD with backlight |
| Power Supply | AC/DC 85-265V or DC12-48V (Code P1) |
| Power Consumption | ≤ 10W |
| Operating Temp. | -25℃ ～ +65℃ |
| Storage Temp. | -40℃ ～ +80℃ |
| Humidity | ≤95% RH, non-condensing, no corrosive gases |
| Altitude | ≤3000m |
| Insulation Resistance | ≥ 100MΩ |
| Dielectric Strength | Power/Signal/RS485: 4kV/1min; Other isolated circuits: 2kV/1min |
| MTBF | ≥50000h |
| Mounting | DIN35mm rail |
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FAQ
Yes. Dual DC inputs are optional. When selected, the meter can measure two independent DC voltages, currents, power, and energy simultaneously. Communication addresses are automatically assigned (Modbus addresses N and N+1, 645 meter ID increments by 1).
In the menu, go to “Input” -> “Neg.t” and set it to “on”. If not set, the voltage reading may appear negative.
The analog output can be associated with Channel 1 current, Channel 1 voltage, Channel 1 power, Channel 2 current, Channel 2 voltage, or Channel 2 power. Output is 4-20mA, corresponding to 0~rated value.
It supports overvoltage, undervoltage, overcurrent, undercurrent, over power, and under power alarms, with configurable thresholds. Alarms can be output via relays or linked with digital inputs. Zero-value alarm can be enabled separately.
The meter defaults to adaptive mode (Puls set to 0), where the pulse constant (1,10,100,1000,10000 imp/kWh) is automatically selected based on the current maximum power. Users can also manually set a value between 1 and 10000 via the menu.
It supports 8 tariffs (T1~T8), configurable as peak, flat, valley, deep valley, etc. On the display, deep valley is indicated by “ON” above “DI 3” + current tariff “Peak” at lower left; on the tariff energy screen, “ON” above “DI 4” + “Peak” indicates deep valley energy.
Two modes: 1) Alarm mode, triggered by configured alarm conditions; 2) Bus control mode, remotely controlled via communication, supporting level output and pulse output.
The meter operates at -25℃ to +65℃, storage -40℃ to +80℃, humidity ≤95% non-condensing. It is suitable for installation in outdoor cabinets with adequate protection.
In Modbus protocol, the two channels are mapped to two independent device addresses (first channel address N, second channel N+1). In DL/T 645, the meter ID increments by 1, effectively creating two logical meters. Users need to read each address separately to obtain data for the corresponding channel.
The analog output accuracy is Class 0.5, consistent with the measurement accuracy, meeting industrial control system requirements.
Summary
This advanced model integrates I/O and analog output for direct control and PLC/DCS integration. Ideal for complex DC systems requiring alarm handling, remote signaling, and real-time analog monitoring, enhancing automation and safety.
