Description
‑ Power Supply：24VDC back‑plane power supply；typical power consumption 10WABB
‑ Mechanical Structure：DIN‑rail / rack compact plug‑in controller；overall weight approx 0.62kg
‑ On‑board Resources：96MHz 32‑bit RISC CPU；2MB application memory；SD‑card slot；front‑panel LCD display & 6‑key operation keypad；hardware self‑diagnosis circuit；battery backup for real‑time clock and retention dataABB
‑ Communication Interface：internal Freelance back‑plane bus；1×Ethernet RJ45；2×serial RS232/RS485 interfaces；optional Profibus‑DP master interface
‑ Galvanic Isolation：communication channels adopt galvanic isolation, isolation rating 2500VAC
‑ Core Function：IEC61131‑3 multi‑task control execution, PID closed‑loop regulation, interlock & sequence control, SOE sequence‑of‑event recording, Modbus‑TCP communication, program backup via SD‑card, controller access lock, comprehensive hardware self‑diagnosis
‑ Protection：surge‑suppression and ESD protection for communication ports, over‑voltage and reverse‑polarity power‑supply protection
‑ Status LED Indicators：PWR power indicator, RUN running status, ERR fault alarm, ETH, FBP, SER, DIAG channel status LED
‑ Weight：approx 0.62kg
‑ Installed in Freelance controller rack, exchanges data with I/O modules through back‑plane bus. Single controller supports up to 300 I/O points, can expand maximum 8 local I/O modules and one Profibus‑DP interface moduleABB. This hardware version does not support controller redundancy.
‑ Supports multi‑task configuration, can set 8 priority cyclic tasks with adjustable cycle time plus PLC background task, optimizes CPU load for process control scenariosABB. Ethernet interface connects Freelance operator station, realizes process data interaction and program download. Two serial interfaces can be configured for Modbus communication and equipment diagnosis respectively. Front‑panel LCD screen displays runtime status, fault diagnosis information; operation keypad can realize local parameter setting and controller locking, locking function forbids unauthorized firmware and application download to enhance system securityABB. SD‑card completes program backup, restore and firmware upgrade. Battery keeps real‑time clock and retention data when power off.
‑ Module self‑diagnosis continuously monitors power supply, CPU, memory, bus and communication channel status; fault codes and alarm messages are uploaded to Freelance operator workstation.
‑ Cannot run independently; must cooperate with Freelance rack, 24VDC power supply and matching I/O modules. Different suffix material numbers correspond to different memory variants: 3BDH000364R0002 is 2MB Ethernet version.
‑ Continuously monitors power supply, internal memory, back‑plane bus and each communication channel status. Hardware fault will light front‑panel ERR fault LED and report fault alarm code to operator station.
‑ No local historical‑data storage; runtime status and fault diagnosis information are read via Freelance engineering tool or front‑panel display.
‑ CPU hardware failure will lead to control station out‑of‑service; this hardware model has no native redundancy function.
‑ Back‑plane connector: insert into Freelance rack slot, connect internal rack bus and 24VDC power supply.
‑ External interfaces：Ethernet RJ45 port, dual serial ports, SD‑card slot, front‑panel display and keypad.
‑ Mounting：Freelance rack / DIN‑rail installation
‑ Operating Temperature：‑20 ℃ ~ +60 ℃ABB
‑ Storage Temperature：‑40 ℃ ~ +85 ℃
‑ Relative Humidity：5‑95 %RH, non‑condensing
‑ Pollution degree：Degree 2
‑ Protection Class：IP20, cabinet‑internal installation.
- PM783F controller CPU unit（3BDH000364R0002）
Complementary parts: Freelance controller rack, 24VDC power supply, Freelance I/O modules, SD memory card, Profibus‑DP slave devices(optional), ethernet network equipment, Freelance engineering & monitoring software.
‑ Cut off rack power before inserting or replacing this CPU module, hot‑swap function is not supported. Configure multi‑task cycle parameters according to project control requirements. Use industrial shielded cables for ethernet and serial communication wiring. Pay attention to lithium‑battery ageing, replace battery periodically to avoid loss of clock and retention data.
‑ For spare‑part replacement: verify full model PM783F and part‑number 3BDH000364R0002; after hardware installation download firmware and user control program, verify logic operation, PID loop regulation and all communication channel data interaction. Wrong material number variant will cause configuration failure.
‑ Module fault will result in control station stop; this hardware does not support main‑standby redundancy.
Water‑plant, small‑medium power plant, chemical industry Freelance DCS control cabinets; compact process control station main controller; industrial spare‑part for Freelance DCS CPU unit.
- ABB Freelance DCS compact controller PM783F (3BDH000364R0002), 2MB application memory, integrated Ethernet, dual serial communication ports, maximum supports 300 I/O pointsABB.
- 96MHz 32‑bit RISC CPU, supports IEC61131‑3 standard, multi‑priority task scheduling, meets small‑and‑medium process control requirementsABB.
- Built‑in LCD display and operation keypad, supports controller locking function for anti‑unauthorized download; SD‑card for program backup and firmware upgradeABB.
- Compact rack‑mount structure, does not support hot‑swap and CPU redundancy.
- Supports Modbus‑TCP, optional Profibus‑DP master, realizes multi‑type field device access.
- Legacy DCS spare‑part, only applied for old‑system maintenance and retrofit projects。
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