Power Function Manager
The Power Function Manager (PFM-500) is a system integrating component which converts ordinary power supplies (or Power Modules) into a fully integrated and multi-functional power system. The unit provides for control, monitoring, paralleling and protection of 12, 24 or 48 VDC, positive negative or floating ground power sources. A 500 amp, heavy duty parallel tie point bus accommodates input from multiple/redundant rectifiers. A digital meter displays system bus voltage, battery voltage, total rectifier amperage, connect/disconnect voltage set points, and system ambient temperature. Features also include status lights, load distribution circuits, low voltage battery disconnect with alarm contacts. All these functions are combined in a compact, rack mount housing which serves as a master DC power management and distribution center. A rack mount ground/return bus is provided. The PFM may be used for integration, control, monitoring and protection of numerous different types of power sources, such as AC-DC rectifiers, regulated power supplies, DC-DC converters and battery banks.
| Model | Nominal Input/Output VDC | Circuit Breaker Capacity |
| PFM-500 | 12, 24, or 48 pos. or neg. ground | 5 (PBA Series) |
- Provides parallel tie point for DC power modules; simplifies wiring
- 12, 24 or 48 VDC input/output; can be used with virtually any DC system
- Use with positive, negative or floating ground; no need to stock multiple units to meet different site requirements
- Digital meter displays: system bus voltage, battery voltage, total rectifier amperage, connect/disconnect voltage set points, and system ambient temperature
- Up to five isolated distribution circuit breaker capacity with “BREAKER TRIP” alarm contacts; easy front panel plug-in installation. Breakers sold separately
- Alarm LED (summary) indicates impending LVD disconnection, Power Module output fail or load circuit breaker trip
- Summary alarm contacts (form C) allow remote monitoring of system status in the event of extended AC power loss
- Manual battery disconnect switch allows service/replacement of batteries without system shutdown
- High current output bus for wiring main system load or for feeding an external distribution panel
- Ground bus provided
- Low voltage battery disconnect protects batteries in the event of extended AC power loss
Overall Performance
- Input/Output: 12, 24 or 48 VDC nominal, positive or negative ground
- Voltage Range: 8 – 65 VDC
- Grounding: Positive or Negative (Polarity insensitivity)
- Maximum Total Current Capacity: 500 amps (max. 6 power supply/modules maximum)
Temperature Rating: 0° C to +60° C
Protection
- Five branch circuit breakers (optional)
- Low voltage battery disconnect (See LVBD Specifications below)
Mechanical/General
- Heavy duty plated copper bus bar
- Powder coated aluminum chassis
- 19″ or 23″, 2 RU, flush or 6” forward rack mount
Case Size
| Inches | Centimeters | Weight | ||||||
| H | W* | D | H | W* | D | lbs | Kg | |
| 3.5 | 17 | 20.5 | 13.5 | 43.2 | 52.1 | 20 | 9.1 | |
| *19” and 23” mounting brackets provided | ||||||||
Indicators/Alarms
- “ALARM” (summary) L.E.D. indicator (Red)
- Digital volt/amp meter (selectable)
- Form C summary alarm contacts; provide for monitoring of up to six inputs from equipment with either Form C or Normally Open contacts. Typical indications include Power Module failure, LVBD activation, breaker mid-trip condition
- A separate set of Form C contacts are provided for pre-LVD activation
Rear Panel
Low Voltage Battery Disconnect Specifications
Factory set actuation voltages:
| 12 VDC | 24 VDC | 48 VDC | |
| Connect | 10.4V | 21.0V | 42.0V |
| Disconnect | 12.0V | 24.5V | 49.0V |
Factory Default LVD Pre-Disconnect Warning Alarm Threshold (Adjustable):
| 12 VDC | 24 VDC | 48 VDC | |
| LVD Pre-Disconnect | 11.2V | 26.2V | 45.5V |
Options:
Plug-in mid-trip circuit breakers with auxiliary contacts that activate “CHECK SYSTEM” indicator and summary alarm contacts.
Available amperages:
5A, 10A, 15A, 20A, 30A, 40A, 50A, 75A and 100Amp
(specify model PBA-5, PBA-10, etc.)
- Quick connect DC wiring harness for use with Newmar 1 KW Power Modules; QCK-3, CCK-4
- Rear Rack Covers: RRC-7-19 or RRC-7-23
- Power Modules
- Additional Distribution: Model DST-10 (UL) or DST-20A(UL)
PM/PFM System
Download PFM-400 Power Function Manager Manual
Download PFM-500 Power Function Manager Manual
