Power Supply: 24V DC, 120V AC, or 240V AC with a power consumption of 5VA.
Channel Parameters: Three interconnected and fully floating input circuits are configured. Each channel responds to sensors with a voltage range of 7.7 - 9.0V DC supplied by a 1kΩ source.
Input/Output Characteristics: For each channel, the relay is energized when the sensor circuit current exceeds 2.1mA (or the resistance is less than 2kΩ), and de-energized when the current is less than 1.2mA (or the resistance is greater than 10kΩ). The nominal hysteresis of the circuit is 200μA (650Ω).
Contact Rating: The maximum rating for AC is 250V, 5A, 100VA; the maximum rating for DC is 250V, 5A, 100W. Reactive loads need to be suppressed during use.
Response Time: The nominal response time of each channel is 50ms.
Environmental Limits: The maximum ambient temperature it can withstand is 60°C.
Certification Standards: It holds certifications including IIC, Baseefa No. EX 88B2114BS 550: Part 7: 1977, and EN 50 020. It is suitable for Zone 0, IIC, T6 hazardous areas and Div 1, Group A hazardous locations.
Physical & Weight Details: The weight of the device is 260g. Unlike the previous model MTL 2212, only terminal 8 can be used for grounding connections.
It accepts inputs from Namur proximity detectors and mechanical switches, and applies an input voltage of 7 - 9V DC with a resistance of 1kΩ ± 10%.
The trigger threshold is set at above 2.1mA to close the relay and below 1.2mA to open the relay, with a hysteresis of 200µA and a nominal resistance of 650Ω.
Output Parameters
It is equipped with changeover relay contacts, and the relay has a resistive load rating of 0.5A at 35V DC, which can stably drive the corresponding safe - area loads.
The response time of the module is no more than 10ms, ensuring rapid response to signal changes from on - site sensors.
Power Supply and Isolation
The power supply voltage ranges from 20V DC to 35V DC, and the power consumption is 35mA at 24V DC, which is equivalent to 0.84W, presenting low power consumption performance.
It provides 250V AC galvanic isolation between the input, output and power circuits to avoid mutual interference between different circuits.
The hazardous - area input signal range covers 0 to 24mA, including over - range signals. It supplies 16.5V voltage to the transmitter when the current is 20mA.
It is compatible with 2 - wire or 3 - wire 4 - 20mA transmitters, and can also connect to separately powered current sources such as 4 - wire transmitters, though HART communication is not supported for the latter.
Output Parameters
The safe - area output signal range is 4 - 20mA, with an under/over - range of 0 - 24mA. The load resistance can reach 360Ω at 24mA and 450Ω at 20mA.
The safe - area circuit has an output resistance greater than 1MΩ, and the circuit ripple is less than 50µA peak - to - peak, ensuring stable output signals.
Accuracy and Response Performance
The transfer accuracy is better than 15µA at 20°C, and the temperature drift is less than 0.8µA/°C. The linearity error is less than 0.05%, and the temperature coefficient is 0.01% per °C.
The module settles to within 10% of the final value within 50µs, enabling rapid response to signal changes.
The input signal range for the hazardous area covers 0 to 24mA, which includes over-range signals. It supplies a 16.5V voltage to the transmitter when the current reaches 20mA.
It is compatible with 2-wire or 3-wire transmitters. Separately powered current sources like 4-wire transmitters can also be connected, but HART communication is not available for such connections.
Output Parameters
The safe-area output signal ranges from 4 to 20mA, with an under/over-range of 0 to 24mA. For the MTLX544 variant, the safe-area load resistance can be 0 to 360Ω at 24mA and 0 to 450Ω at 20mA.
The MTLX544S variant acts as a current sink with a maximum safe-area load of 600Ω and supports a maximum voltage source of 24V DC. The safe-area circuit has an output resistance exceeding 1MΩ and a ripple of less than 50µA peak-to-peak.
Accuracy and Response Performance
The transfer accuracy is better than 15µA at 20°C, and the temperature drift is less than 0.8µA/°C, ensuring minimal signal distortion due to temperature changes.
The module settles to within 10% of the final value within 50µs, enabling rapid response to changes in the transmitter's input signals.
The input signal is a 4 - 20mA floating signal from the safe-area controller. The digital signal bandwidth ranges from 500Hz to 10kHz, which can meet the transmission needs of most industrial digital communication signals.
The maximum load resistance reaches 800Ω at 16V and 20mA, and the minimum load resistance is 90Ω, with short-circuit detection activated when the resistance is less than 50Ω. The output resistance exceeds 1MΩ, ensuring stable signal output.
Accuracy and Stability
The transfer accuracy is better than 20μA at 20°C, and the temperature drift is less than 1.0μA/°C, which minimizes signal distortion caused by temperature changes.
The ripple of input and output circuits is less than 40μA peak, and the module settles to the final value within 100ms, ensuring rapid response to signal changes and stable transmission.
Safety and Functional Parameters
It has an under-range capability within 1mA and an over-range capability of up to 24mA when the load is 520Ω or less. When a line fault occurs, the current entering the terminals drops to a preset level to protect the circuit.
It achieves 253V AC or DC isolation between circuits, which can effectively prevent electrical interference between different circuits and ensure the safety of the system.
The safe - area input voltage ranges from 20V DC to 35V DC. When the output load is 80mA, the typical current consumption is 135mA at 24V DC, and the current consumption is 105mA at 35V DC.
It provides a stable 18.4V ±2% power supply for fieldbus devices in hazardous areas, with a maximum output current of 80mA and a DC impedance of 105Ω ±3%.
Signal and Isolation Parameters
The digital signal transmission rate is fixed at 31.25kbit/s, which is fully compatible with H1 fieldbus systems and meets relevant fieldbus standards.
The isolation voltage between safe - area and hazardous - area circuits and the power supply reaches 250V AC. The parameters of terminals 1 and 2 are 22V, 102Ω and 216mA, and the maximum voltage tolerance is 250V RMS or DC.
Physical and Environmental Parameters
The operating temperature ranges from -20°C to +60°C. If installed non - vertically, the maximum allowable operating temperature is reduced to 45°C.
It adopts 10mm spacing DIN rail installation. A green LED indicator is configured to display the power supply status. The shipping weight of the product is 1kg.
The intrinsic safety parameters for hazardous area terminals include an open - circuit voltage of 10.5V, a short - circuit current of 14mA, and zero input capacitance and inductance. The maximum voltage tolerance for related circuits reaches 253V RMS.
The safe - area relay contacts can switch up to 253V RMS, 2A RMS and 100VA. In Zone 2, the relay contacts can switch up to 35V, 2A and 100VA, and the DC supply voltage for specific non - hazardous area circuits can be up to 35V.
The maximum current consumption is 35mA at 24V DC, and the corresponding power dissipation is 0.84W.
Response and Environmental Parameters
The maximum response time of the module is 10ms, ensuring rapid response to signal changes and fault events in the field.
The operating temperature ranges from -20°C to +60°C. It requires installation in an enclosure with at least IP54 protection level when used in Zone 2.
The power supply voltage ranges from 20V DC to 35V DC. The maximum power consumption of the module is 2.0W, and it weighs 140 grams, which helps reduce the overall energy consumption and weight of the control cabinet.
The maximum voltage tolerance of the related circuits reaches 253V RMS, which can adapt to the voltage fluctuations in industrial power supply environments.
Input and Output Parameters
For proximity detector input, it provides 7.0V - 9.0V DC excitation with a nominal 1kΩ resistance. The output turns on when the input exceeds 2.1mA and turns off when the input is less than 1.2mA, with a nominal switching hysteresis of 0.2mA.
The safe - area pulse output has a maximum delay of 10μs, a maximum off - state voltage of 35V, a maximum off - state leakage current of 10μA, a maximum on - state resistance of 25Ω and a maximum on - state current of 50mA.
The analog output signal ranges from 4mA to 20mA, with an accuracy better than 20μA at 20°C and a temperature drift of less than 14μA/°C. The maximum load resistance it can drive at 20mA is 450Ω.
The relay alarm output can bear a maximum of 0.5A current at 35V DC.
The safe area supply voltage ranges from 20V DC to 35V DC, with a typical operating voltage of 24V DC.
The current consumption is 51mA when powered by 24V DC, and the maximum power dissipation is 0.7W at 24V DC, which can reach 1.0W in specific working conditions.
The transmitter voltage is 16.5V when the current is 20mA.
Signal Parameters
The hazardous area input signal range is 0 - 24mA, covering over-range signals, and the safe area output signal range is 4 - 20mA.
The load resistance can be up to 360Ω when the current is 24mA, and up to 450Ω when the current is 20mA.
The response time settles to within 10% of the final value in 50μs, and the temperature drift is less than 0.8μA per degree Celsius.
It has 16 analog input channels and supports mixed connections of multiple types of sensor signals without the need for additional adapter components.
The output signals include 4 - 20mA and 0 - 10V, and the transmission accuracy reaches ±0.1% of span, which guarantees the precision of signal transmission in industrial control processes.
Transmission Parameters
It relies on a single shielded twisted pair as the data highway for signal and power transmission, with a maximum transmission distance of up to 2 kilometers when used with the MTL838C receiver.
It achieves 3-way galvanic isolation among input, output and power circuits, effectively preventing signal interference and ensuring signal integrity.
Power Supply
The power supply range is 20V DC to 35V DC, and some versions can also adapt to an 8V DC to 32V DC input range, which is compatible with various industrial power supply systems.
Physical and Environmental Indicators
Its overall dimensions are 10.2 cm × 8 cm × 5 cm and the net weight is 0.12 kg. It supports DIN rail mounting and can also be installed in on-site junction boxes or explosion-proof enclosures.
The operating temperature range is -40°C to 70°C, and the storage temperature ranges from -40°C to 85°C. It can work normally in an environment with 5% to 95% relative humidity without condensation, and the protection level reaches IP65.
It complies with the Profibus - DP protocol based on the EN - 50170 standard and adopts the RS - 485 transmission standard.
It supports multiple transmission rates including 9.6 kbaud, 19.2 kbaud, 93.75 kbaud, 187.5 kbaud, 500 kbaud, 1.5 mbaud, 6 mbaud and 12 mbaud.
The maximum length of the bus segment varies with the transmission rate, and it can reach 1200 meters when the rate is 9.6 kbaud or 19.2 kbaud, and 100 meters when the rate is 6 mbaud or 12 mbaud.
Data Capacity
The maximum input data including a 2 - byte status word is 240 bytes, and the maximum output data including a 2 - byte control word is 240 bytes, with the total maximum data of input and output reaching 480 bytes.
It provides four options for diagnostic telegram lengths, which are 110 bytes, 61 bytes, 13 bytes and 29 bytes, among which 13 bytes is the default length.
It is fully compatible with the Profibus - DP communication protocol, which lays a foundation for seamless connection with Profibus - DP master stations.
The maximum LAN transmission speed reaches 6 Mbaud, ensuring efficient and real - time data exchange between the master station and I/O modules.
It can support up to 24 I/O modules, which provides sufficient expansion space for the construction of large - scale industrial control systems.
Power and Isolation
It adopts a 24V DC power supply, and the current rating is 0.25A, which meets the power demand of stable operation of connected modules.
The isolation voltage between the safe side and the dangerous side reaches 250V AC, and some versions can reach 2kV, which can effectively block the mutual interference of fault signals between circuits.
Environmental Limits
The operating temperature range is from -40°C to 85°C, and the storage temperature can withstand the range of -40°C to 80°C, adapting to extreme temperature changes in industrial sites.
It can operate normally in an environment with a relative humidity of 5% to 95%, and has an IP20 protection rating, which is suitable for installation and use in control cabinets.
