ABB 3BDH000741R1 CTI 21-P Ex Control interface module

ABB 3BDH000741R1 CTI 21-P Ex Control interface module

Specific Parameters

• Electrical ParametersPower Supply Voltage: 24V DC ±15%, ripple ≤100mVPower Consumption: Typical 8W, maximum 12WCommunication Interfaces: 1 RS485 (Modbus RTU protocol), 1 PROFIBUS DP (optional)Input Channels: 4 analog inputs (4-20mA), 8 digital inputs (24V DC, PNP/NPN compatible)Output Channels: 2 analog outputs (4-20mA, load ≤500Ω), 4 digital outputs (24V DC, 2A/channel)Explosion-proof Electrical Rating: Ex d IIC T6 Ga (IECEx), II 2G Ex d IIC T6 Ga (ATEX)Electrical Isolation: 2.5kVrms isolation between input/output/power supply, compliant with IEC 61010-1Diagnostic Functions: Supports channel open/short circuit detection, communication interruption alarm, power abnormality monitoring
• Environmental ParametersOperating Temperature: -20℃ to +60℃ (non-condensing environment)Storage Temperature: -40℃ to +85℃Relative Humidity: 5% to 95% (non-condensing, compliant with IEC 60068-2-3)Protection Rating: IP65 (module itself, including explosion-proof housing)Vibration Resistance: 10-500Hz frequency range, 1g acceleration (sine wave), 30 minutes per axisShock Resistance: 15g acceleration (11ms duration, compliant with IEC 60068-2-27)Explosion-proof Environment Category: Suitable for Zone 1 and Zone 2 (IIA, IIB, IIC explosive gas environments)
• Mechanical ParametersOverall Dimensions: 220mm×160mm×100mm (L×W×H, including explosion-proof housing)Housing Material: Cast aluminum alloy (EN AB-46200), surface electrostatic spraying (anti-corrosion)Weight: Approximately 3.5kgMounting Method: 35mm standard DIN rail mounting or wall mounting (M6 explosion-proof screws)Wiring Method: Explosion-proof cable gland (adapting to cable diameter 6-12mm)Status Indication: 6 LED indicators (power, communication, input/output fault, explosion-proof housing sealing status)

Product Performance

Compliant explosion-proof performance: Passes IECEx and ATEX dual explosion-proof certifications; Ex d IIC T6 Ga rating covers most explosive gas environments; the explosion-proof housing can withstand internal explosion pressure and prevent flame propagation outward, meeting the long-term operation requirements of Zone 1 hazardous environments.

Reliable signal processing: 4 analog inputs with accuracy ±0.1% FS, digital input response time ≤1ms, enabling accurate acquisition of process parameters such as pressure and temperature; analog output linearity ≤0.2%, which can stably drive actuators such as control valves and frequency converters without signal drift.

Strong communication stability: RS485/PROFIBUS DP communication links support redundant configuration, automatically switch after communication interruption with recovery time ≤100ms; integrated electromagnetic shielding design, common-mode interference immunity ≥100dB, no data loss in hazardous environments with dense high-power equipment.

High maintenance safety: The explosion-proof housing adopts a quick-opening structure; power must be cut off and internal pressure released before opening; it is equipped with a sealing status LED indicator to avoid explosion-proof failure caused by misoperation; the fault diagnosis function can locate specific channel abnormalities, enabling preliminary troubleshooting without disassembling the housing.

Excellent environmental adaptability: -20℃ to +60℃ wide temperature operating range covers scenarios such as frigid oilfields and tropical refineries; IP65 protection rating isolates dust and splashes; cast aluminum alloy housing resists salt spray corrosion, adapting to harsh environments in coastal areas and chemical zones.