The Power Function Manager (PFM-500) is a system integrating component which converts ordinary power supplies into a fully integrated and multifunctional 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, rackmount housing which serves as a master DC power management and distribution center. A rackmount 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

Specifications: Power Function Manager - PFM-500

Features

• Provides parallel tie point for DC power modules; simplifies wiring
• 12, 24 or 48 VDC input/output, positive or negative ground; 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

• Download Data Sheet (PDF)

  Manuals

  PFM-500 Power Function Manager

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 rackmount

Case Size

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:

Factory default LVD pre-disconnect warning alarm threshold (adjustable):

Options:

• Plug-in mid-trip circuit breakers with auxiliary contacts that activate “CHECK SYSTEM” indicator and summary alarm contacts. Available Amperages:
  • 5, 10, 15, 20, 30, 40, 50, 75, 100 (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 (click here)
• Power Modules
• Additional Distribution: Model DST-10 (UL) or DST-20A(UL)