Sigma Tacker  Product Datasheet

SIGMA TRACKER 
True Bifacial
Reliable technology
Mounting Systems presents its stabile and innovative single-axis, single-post
Tracker system. An efficient electric motor drives the torque tube and the jack in
a tilt range of up to +/- 50°. Designed with two main goals in mind: Firstly, to
achieve static stability and minimize vibrations during operation, and secondly, Open Terrain

to create a smooth and low friction system that will ensure a low level of energy
demand. The Sigma Tracker can withstand wind speeds of up to a remarkable
260 km/h.
Framed Module Unframed Module Orientation Orientation
Portrait Landscape
Variable module layout
All mono- and bifacial module configurations in portrait and landscape are
possible, providing design flexibility and ensuring optimized project layouts. 10
Years
Warranty
Minimized shadowing from the backside optimize the bifacial module features.

Self-locking mechanism
Sigma Tracker design exploits the self-locking capability of the trapezoidal
threaded nut on a spindle to provide static stability on each post of the tracker.
The high load bearing capacity of the scissor-jack design allows for a stable
and reliable tracker structure in all positions during tracking. The versatile load
bearing property of the mechanism allows the tracker to sustain high loads
(wind & snow) and provides robust dynamic stability.

Low maintenance requirements

The profiles of the system are made of self-healing, coated steel, contributing to
the system’s long durability even under conditions of high corrosiveness.
All electrical and moving parts are designed to withstand extreme weather and
environmental conditions and to minimize maintenance requirements.

Excellent adaptability
The Sigma Tracker can adapt to multiple soil conditions. Driven pile foundations,
earth screws and concrete foundations are some of the grounding options for
the Sigma Tracker. Depending on the project requirements, further adaptations
can take place, rendering the Sigma Tracker the most flexible solution in the
market.
 APPLICATION

All monofacial and bifacial options, framed or laminates

Module types Optimized bifaciality in accordance with module
manufacturer requirements

2V (vertical/portrait)
4H (horizontal/landscape)
Module layout Structural system
Flexible string configuration
Up to 240 PV modules per tracker

Corrosion category Standard corrosion class C3

Sigma Tracker  Product Datasheet

Standard 10 years on structural parts

Warranty
5 years on moving parts and electronics

MECHANICAL FEATURES

Operation angle +50° east to -50° west

Stow position 0°
Wind protection Up to 90 km/h with tracking *
Up to 260 km/h in stow position * Drive system

Operating temperature -25°C to +60°C

Foundation Driven piles, concrete foundation, screw piles

Support profiles Steel profile (anti-corrosive coating)

Screws, clamps – in accordance with standard fastening

Module fastening
requirements of module OEM

TRANSMISSION SYSTEM

Drive Single row drive with non-static torque tube Transmission system

Motor Asynchronous standard motor with integrated gear

and chain drive

Lifting system Tilting rafter driven by scissor jack on each structural pile

ELECTRICAL SYSTEM
Standard: 400V, 50Hz, 0.55 kW per tracker
Power input
Optional: 230V, 50/60Hz, 0.55 kW per tracker

Annual consumption 90kWh per tracker in standard operation

CONTROL SYSTEM
Decentralized control system on each tracker mounted to
General
existing structural pile

Automatic mode with backtracking; manual mode,

Operating modes
cleaning mode, maintenance mode (freely programable)

Hardware Siemens SIMATIC S7 including Variable Frequency Drive

Astronomical based on Siemens solar library including

Tracking software
adaptable backtracking
2 x tilt sensor with +/-0.5° accuracy
Sensors
Wind sensor – quantity depending on project site topology

Master Control Box for up to 30 trackers

Control system design
Slave Control Box for each tracker

MODBUS RS485 between Master and Slave Control Box;

Communication
PROFINET project wide communication
ST_MA_Tracker BiFa_DS_EN_v1.0

SIGMA VIEW 1.3

Data interface
SCADA Exchange - Modbus/TCP or SQL

* subject to project details and static requirements

* Standard values. Design solutions available for higher wind speeds For further information: www.mounting-systems.com
** For terms and conditions please refer to the Mounting Systems GmbH warranty Subject to change without notice.
*** All technical details are subject to project specifications and might occassionaly by exceeded 2020 © Mounting Systems GmbH