| Accuracy Class | Class 1 | |||
| Input | Nominal Value | BAK20-A | Current AC 0.5A, 50A, 200A, etc. AC0～(0.5～200A) | |
| BAK50-AI | Current AC 60A, 300A, 600A, etc. AC0～(60～600A) | |||
| Overload | Continuous 1.2x, Instantaneous current 10x/5 seconds | |||
| Power Consumption | ≤1VA | |||
| Measurement Frequency | 45Hz～65Hz | |||
| Output | Nominal Value | DC0/4～20mA，0～5/10V | ||
| Load Resistance | ≤500Ω when current output, ≥10KΩ when voltage output | |||
| Communication | RS485 interface / Modbus-RTU protocol | |||
| Digital Output(DO) | 1 relay output, Normally Open (NO) contactsCapacity 2A/30VDC or 2A/250VAC | |||
| Indicators | 2 indicators: RUN (operational status), Alarm (DO status) | |||
| Response Time | ≤400ms | |||
| Power Supply | Voltage | DC 12V or 24V | ||
| Power Consumption | ≤1W | |||
| Insulation Resistance | ＞100MΩ | |||
| Dielectric Strength | 2.0kV/1min, 50Hz between Input/Output/Power Supply | |||
| Temperature Coefficient | ≤400ppm/℃ when -10℃～55℃ | |||
| Environment | Temperature | Operating: -10℃～+55℃ Storage: -25℃～+70℃ | ||
| Humidity | ≤93%RH, non-condensing, non-corrosive gas environment | |||
| Altitude | ≤2000m | |||
| Weight | BAK20-AI approx. 242g | BAK50-AI approx. 468g | ||
| Mounting | TS35 rail, or fixed to cabinet with screws | |||
V+ —— Power Positive (Note: Do not reverse power positive and ground)
DO-、DO+ —— Digital Output (Switch) Interface
V- —— Power Ground
A、B —— RS485 Interface
OUT- —— Analog Output Negative
OUT+ —— Analog Output Positive
Cable is through-hole (pass-through) input
Indicator Definitions:
RUN: Normal operation. When 485 communication is not connected, the RUN indicator shows green, blinking once per second. When the current sensor successfully connects to 485 communication, the RUN indicator blinks rapidly.
Alarm: After the alarm function is enabled, when the input current reaches 120% of the sensor’s range, the Alarm indicator lights red steadily and the relay output closes. When the input current drops below 110% of the sensor’s range, the Alarm indicator turns off. If the alarm function is not enabled, the Alarm indicator remains off and the relay does not close.
Notes:
(1) The device uses removable terminal blocks. It is recommended to use shielded wires with a cross-sectional area of 0.75mm² for the power, output, RS485 communication, and digital output interface sides.
(2) Please refer to the wiring diagram on the physical housing for specific wiring connections.
BAK20-AI Dimension
BAK50-AI Dimension
