ABB PM152 3BSE003643R1 24 V DC analogue output module

ABB PM152, part number 3BSE003643R1, is an analog output card of ABB S800 I/O series, fully compatible with System 800xA and AC800M distributed DCS control systems. It acts as the standard output unit that receives control commands from the controller and outputs standard analog signals to drive field control valves, frequency converters and positioners.

Equipped with independent high-precision DAC conversion circuits and full-channel hardware diagnosis loops, the module provides 16 channels of isolated analog outputs supporting standard 4~20mA current signals. It integrates online diagnosis functions for wire breakage, load loss, output short-circuit, overvoltage and overheating, as well as multi-level hardware current limiting protection. Matched with TU812V1 (3BSE013232R1) 25-pin D-Sub terminal unit, it realizes high-speed data interaction with controllers via ModuleBus backplane bus, and supports online module hot swapping and real-time upload of fault diagnosis codes. Adopting industrial wide-temperature hardware, 1500VDC electrical isolation between channels and backplane, and high-grade EMC anti-interference design, the module has no wearable mechanical parts and maintains stable output accuracy for long-term operation. It is widely used to output setpoint signals for control valves, variable frequency actuators and field instruments in production lines of thermal power, chemical, metallurgy, water treatment and paper industries, suitable for renovation projects including replacement of legacy AO modules, expansion of analog points and upgrading of high-precision continuous regulation working conditions.

Built-in dedicated bus transceiver processing chips receive setpoint value commands issued by the controller through the DIN rail backplane ModuleBus bus, and synchronously upload output status and fault diagnosis codes of each channel. Bus signals are hardware-isolated to block field load interference from flowing back to the controller backplane. Hardware addresses are automatically assigned when multiple modules are cascaded on the rail, eliminating the need for manual DIP switch configuration.

16 fully independent isolated analog output loops are provided. Each channel is equipped with dedicated 16-bit high-precision DAC conversion chips, precision sampling resistors and current-limiting protection loops. Single-channel functions include load loss detection and short-circuit fault identification to detect loop wire breakage, open load and output short-circuit anomalies. An independent yellow status LED is fitted per channel to visually display valid output status. Transient absorption components are integrated into output loops to absorb reverse electromotive force from inductive actuators and prevent breakdown of DAC chips.

Three-color global status LEDs are arranged on the panel: green RUN indicator for operation, red FAULT indicator for faults, and yellow WARNING indicator for alarms. Steady green RUN light means normal module bus communication; steady red FAULT light indicates module hardware failure or bus disconnection; illuminated yellow WARNING light signals short-circuit, load loss or overheating alarm on any channel. Complete fault codes can be read and traced via the controller Control Builder engineering software.

Power is supplied uniformly by the 24VDC rail backplane, with built-in power filtering, reverse polarity and short-circuit protection circuits. Two layers of hardware protection are implemented for each channel: independent current limiting shutdown and overall power derating upon overheating. A fault on a single channel only locks the analog output of that channel without interfering with normal regulation output of the other 15 channels. A 1500VDC electrical isolation barrier is arranged between analog output channels and the backplane bus to completely isolate ground potential differences and surge voltage interference from field equipment that cause signal drift.

Integrated housing made of flame-retardant high-temperature resistant PCB and V0 grade engineering plastic, with standard single-slot size for S800 I/O cards, designed for horizontal clip-on mounting on 35mm DIN rails. Free of moving mechanical parts, it requires no wear-related maintenance. Gold-plated backplane edge connectors resist oxidation, adapting to long-term constant-temperature continuous operation in sealed control cabinets.

Model & Part No.: PM152 / 3BSE003643R1Number of Channels: 16 independent analog output channelsStandard Output Signal: 4~20mA DCMax Allowable Load Resistance: ≤500Ω @24VDCDAC Resolution: 16-bitComprehensive Accuracy at Ambient Temperature: ±0.1%FSMax Output Current per Channel: 22mAMinimum Detectable Load: ≤300Ω (threshold for load loss diagnosis)Open Circuit Identification: Output below 3mA judged as wire breakageIsolation Withstand Voltage: 1500VDC between analog output channels and backplane busDiagnosis Functions: Online real-time detection of channel wire breakage, load loss, output short-circuit and overheatingAdjustable Minimum Output Refresh Cycle: 100msBus Interface: Built-in high-speed ModuleBus backplane bus

Backplane Power Supply: 24VDC (allowable range: 18~30VDC)Maximum Overall Power Consumption: ＜11WTypical Overall Operating Current: Approx. 350mA @24VDCMatching Supporting Terminal Unit: TU812V1 3BSE013232R1 (25-pin D-Sub 50V MTU)Hot Swap Support: Online module replacement without full system shutdown

Operating Temperature (Horizontal Rail Mount): 0℃ ~ +55℃Operating Temperature (Vertical Rail Mount): 0℃ ~ +40℃Storage & Transportation Temperature: -40℃ ~ +70℃Relative Humidity: 5%~95% RH, non-condensing, free of acid and alkali corrosive gasMaximum Operating Altitude: ≤2000mProtection Class: IP20 (for indoor control cabinet internal installation only)Pollution Degree: Class 2

Mounting Method: Horizontal clip-on mounting on standard 35mm DIN railOverall Size: Single slot width of standard S800 I/O modulesNet Weight: Approx. 0.23kgSupport Configuration Software: ABB Control Builder / 800xA System PlatformHousing Material: V0 flame-retardant engineering plastic, gold-plated backplane contacts

16-channel independent isolated 4~20mA analog outputs universally compatible with industrial control valve actuators

Each channel features fully independent electrical isolation without mutual interference, and can directly drive 4~20mA pneumatic valve positioners, electric control valves, frequency converter setpoint signals and field recorders. Built-in reverse EMF absorption loops eliminate the need for additional protective freewheeling components and simplify field wiring construction.

Full-channel online fault diagnosis enables rapid location of field loop wire breakage and short-circuit faults

It real-time identifies four types of faults: wire breakage, loop short-circuit, load loss and module overheating. A fault on a single channel only shields the output of that channel while other channels continue normal regulation. Fault statuses are uploaded to the DCS system to generate SOE event records, allowing maintenance staff to quickly locate damaged lines and ground fault points and shorten downtime troubleshooting duration.

Multi-stage hardware protection prevents module burnout and bus communication disturbance

Three layers of hardware protection are implemented: independent current limiting shutdown per channel, overall power derating upon overheating, and backplane power reverse polarity / short-circuit protection. Short-circuit of field loops will not cause hardware damage to the module, nor interrupt communication of the entire ModuleBus bus, ensuring continuous stable output of regulation signals of the complete I/O station.

Support for online hot swapping avoids full-line shutdown for continuous production plants

Modules can be replaced with power on. The replacement process has no impact on other I/O modules and controller PID regulation logic operation, allowing separate maintenance of single-loop line faults, suitable for continuous production facilities such as chemical plants and power plants that cannot undergo full-line production halt.

High-precision 16-bit DAC conversion delivers stable long-term regulation accuracy without drift

Adopting high-precision electronic solid-state DAC conversion loops with ultra-low temperature drift coefficient, zero point and gain drift do not occur during long-term continuous operation. Its control accuracy is far higher than low-resolution analog output modules, ideal for closed-loop precise regulation of temperature, liquid level and pressure.

Standardized unified S800 I/O architecture enables convenient replacement during new and old system renovationUnified backplane bus protocols, mechanical dimensions and terminal matching definitions allow direct in-situ replacement of legacy AO810, AO815 and other analog output cards. Original TU812V1 terminal units and field signal cables can be retained without modification, greatly shortening cabinet renovation downtime.

Power Industry: Output control of 4~20mA analog setpoint signals for boiler feedwater control valves, denitrification ammonia injection valves and fan frequency converters in thermal power, hydropower and photovoltaic power stations.Chemical & Petrochemical Industry: Output of setpoint signals for temperature, pressure and liquid level control valve positioners in refining and fine chemical reactors.Metallurgical Industry: Output of analog control signals for heating furnace gas regulating valves and dust removal air volume actuators in steel rolling lines.Water Treatment, Paper Making, Cement & Light Industry: Output of setpoint signals for chemical dosing control valves, water flow regulating valves and frequency conversion equipment on production lines.Technical Renovation & Capacity Expansion Projects: Adding analog measuring points to 800xA system I/O cabinets, upgrading legacy low-precision AO modules, and optimizing high-precision closed-loop regulation circuits.Special Working Conditions: Output of analog signals for control valves in marine power control cabinets on offshore platforms and vessels, adapting to long-term vibration and wide-temperature operating environments.