ABB PSM03 Rack-mounted Card-type System Power Board

1. Old model PSM03 Harmony rack-specific PSM02 (1KHL178 series, same as TRM01/BIO01 in vertical card slot)
1. Full name
Power Supply Module 02, rack-mounted card-type system power board, providing 5V system bus power for backplane BRC controller, TRM01 communication card, BIO01 mixed IO, and PIO01 pulse card.
2. Complete order code
PSM03 standard version), same as the upgraded PSM03 (with greater power)
3. Electrical parameters
Input: External DC24V power supply from th e cabinet
Output: Backplane DC5V system power supply, providing power for all cards
Power consumption: Approximately 45W
Installation: Single-slot vertical insertion for Harmony standard rack, does not support hot swapping
Indicators: RUN running light, FAULT fault light, overcurrent / overvoltage alarm
Protection: Overvoltage OVP, overcurrent OCP, short circuit self-lock protection
4. Compatibility relationship
Within the same rack: PSM02 power supply → BRC controller + TRM01 optical communication card + BIO01 discrete IO + PIO01 pulse acquisition card.
For a full rack configuration of more than 10 IO cards, it is recommended to use dual PSM02 for redundant power supply.
2. New model Symphony Plus / AC500 PLC 500PSM02 (1MRB150015R1, DIN rail / cabinet power, not compatible with the previous model)
1. Positioning
Symphony Plus is the new generation rack-mounted high-power power unit, not a vertical card type, providing 28VDC output for the entire IO cabinet.
2. Key specifications
Input: 90~264VAC wide-range mains power, supports dual redundant input
Output: 28VDC, 20A continuous output, total power 560W
Cooling: Built-in fan air cooling, natural heat dissipation at low load
Installation: Rack-specific power slot, supports hot swapping, N+1 redundant parallel connection
Protection: PFC power correction, short circuit / overvoltage / overload automatic recovery
3. Panel indicators
Green Power OK, red Fault overload fault indicator light
3. Core comparison of the two PSM02 models (focus on distinction, cannot be mixed)
Table

Project: INFI90 Harmony PSM02 (1KHL178) 500PSM02 (AC500/Symphony Plus 1MRB)
Appearance: Vertical plug-in small module, single slot position; Complete machine power box, independent slot position of the chassis
Adapter cards: TRM01, BIO01, PIO01 of the old INFI90 rack system
Power supply objects: Backplane of the rack 5V bus; 28VDC external IO power supply of the entire machine
Hot-swappable: Not supported; Supports online replacement
Input power: DC24V; AC90~264V mains power
Typical scenarios: Spare parts for the old INFI90 system of thermal power plants, Symphony Plus control cabinets of new renovations
Four. Avoiding Confusion with Model Names

NPSM02:

Old Bailey INFI90 external 24V small power supply, completely unrelated to the PSM02 rack plug-in card
Wika PSM02 pressure switch: Hydraulic pneumatic pressure sensor, has no any association with the DCS power module
PSM03: Upgrade and expansion model of PSM02, with greater output power, the old rack can directly replace PSM02

Typical Application Scenarios
Power supply spare parts for the old INFI90 Harmony DCS cabinets of thermal power plants (1KHL178 PSM02)
Redundant power supply for the newly built Symphony Plus control cabinets of thermal power and waste incineration (500PSM02)
Complete set of IO rack supply: Controller + optical communication card + analog IO + pulse acquisition card unified power supply