Chapter 3. Introduction
The Güralp Portable Power Module, or PPM, is a convenient charge-control and battery system that can provide continuous power to a Güralp Fortimus or Certimus instrument in a solar-powered installation. It can also be used a stand-alone battery for short-term, off-grid Fortimus or Certimus deployments.
When used with solar panels, the integrated charge controller operates on the MPPT (Maximum Power Point Tracking) principle and will automatically adjust its input impedance to draw the maximum power from the connected solar panel, regardless of changes in light conditions.
The Portable Power Module is a single, rugged, sealed unit and is supplied with:
an output cable for connecting it directly to the Fortimus or Certimus. This cable has a four-pin bayonet connector on each end.
a charge cable. This connects to the PPM via a six-pin bayonet connector and is terminated at the other end in a pair of industry standard MC4 connectors.
Note: The PPM has a sleep mode, during which no power output is provided. This is known as "hibernation". It is shipped in this mode and must be "awakened" before use: see section 4.1 for details.