Module Features
Purpose and Description of the Module
The SfAR-1M-2DI1AO module has 1 current analog output (0-20 mA or 4-20 mA) and 1 voltage analog output (0-10 V). Both outputs can be used at the same time. The module is equipped in two digital inputs. In addition, terminals IN1 and IN2 can be used to connect one encoder. Setting the output current or voltage value is done via RS485 (Modbus protocol), so the module can be easily integrated with popular PLCs, HMI, or PC equipped with an appropriate adapter.
This module is connected to the RS485 bus with a twisted-pair wire. Communication is via Modbus RTU or Modbus ASCII. The use of 32-bit ARM core processor provides fast processing and quick communication. The baud rate is configurable from 2400 to 115200.
The module is designed for mounting on a DIN rail in accordance with DIN EN 5002.
The module is equipped with a set of LEDs to indicate the status of inputs and outputs, which is useful for diagnostic purposes and helping to find errors.
Module configuration is done via USB by using a dedicated computer program. It also allows for changing the parameters using the Modbus protocol.
Technical Specification
Power Supply | Voltage | 10-38 V DC; 10-28 V AC |
|---|---|---|
Power consumption (with active Modbus transmission and high state on all inputs) | 1 W at 24 V DC | |
2 VA at 24 V AC | ||
Isolation | Isolation between power supply and I/O | 1000 V DC |
Analog Outputs | No. of outputs | 1 |
Voltage output | 0 V - 10 V (resolution 1.5 mV) | |
Max. load current 0-10 V 5 mA | ||
Accuracy ± 2% | ||
Current output | 0 mA - 20 mA (resolution 5 μA) | |
4 mA - 20 mA (value in ‰ – 1000 steps) (resolution 16 μA) | ||
Max. resistance 500 ohm | ||
Accuracy ±1% | ||
Output resolution | 12 bits | |
DAC time processing | 16 ms/channel | |
Digital Inputs | No. of inputs | 2 |
Voltage range | 0-36 V | |
Low state "0" | 0-3 V | |
High state "1" | 6-36 V | |
Input impedance | 4 kΩ | |
Isolation | 1500 Vrms | |
Input Type | PNP or NPN | |
Counters | No. of counters | 2 |
Resolution | 32-bit | |
Frequency | 1 kHz (max.) | |
Impulse width | 500 μs (min.) | |
Temperature | Work | -20 °C to +65°C |
Storage | -40 °C to +85°C | |
Connectors | Power supply | 3 pin |
Communication | 3 pin | |
Inputs | 2 x 3 pin | |
Configuration | mini USB | |
Size | Height | 90 mm |
Length | 56.4 mm | |
Width | 17.5 mm | |
Interface | RS485 | Up to 128 devices |
Dimensions
The appearance and dimensions of the module are shown below. The module is mounted directly to the rail in the DIN industry standard. Power connectors, communication and IOs are at the bottom and top of the module. USB connector configuration and indicators located on the front of the module.
