LC-305 CR
5-channel AC Load Current Measurement Module
- 5-channel AC Load Current Measurement
- AC Current Input Ranges from 0 to 5 A
- Load Current Measurement Accuracy 3%
- Dual Watchdog
- Support DCON and Modbus RTU Protocol
- Wide Operating Temperature Range: -25 to +75°C
- Tiny Form Factor with Easy Screw Mounting
INTRODUCTION
The LC-305 is a 5-channel AC Load Current Measurement Module. LC-305 is fully RoHS-compliant and has qualification for 4 kV ESD protection and 2000 VDC intra-module isolation is also provided. When required, communication with the LC-305 is programmable based on the Modbus RTU protocol, and an added benefit is that different addresses can be set via hardware configuration. The module can measure the load current of each lamp to verify if the lamp is normal or failed; check if the bulb begins to fade and needs to be replaced; and see if there is carbon-buildup depositing on the relay contacts which may makes the relay become sticky.
I/O SPECIFICATIONS
AC Current Input
Channels: 5
Wiring: Single ended
Input Current: 0 to 5 A
Input Frequency: 50/60 Hz
Max. Load Current: 10 A/Module COM point
Max. Single Load Current: 5 A at 25°C
Accuracy: 3% of FSR
Data Update Rate: 1 Second
SYESTEM SPECIFICATIONS
Communication
Interface: RS-485
Data Format: N,8,1/O,8,1/E,8,1/N,8,2
Baud Rate: 1200 to 115200 bps
Protocol: Modbus RTU or DCON
Node Addresses: 96 to 127
LED Indicators
Power: 1 LED as Power Indicator
EMS Protection
ESD (IEC 61000-4-2): ±4 kV contact for each terminal
EFT (IEC 61000-4-4): ±4 kV for power and communication
Power
Reverse Polarity Protection: Yes
Powered from Terminal Block: +10 to +30 VDC
Consumption: 0.7 W Max.
Mechanical
Dimensions (L x W x H): 83 mm x 70 mm x 29 mm
Installation: Screw Mounting/DIN Rail mount
Environment
Operating Temperature: -25 to +75°C
Storage Temperature: -30 to +80°C
Humidity: 10 to 95% RH, Non-condensing