The U1601 summator expands the Energy Control System to include processing of analog values, and it simplifies the connection of energy meters to the LON bus. 

This allows for the logging, visualization and optimization of all electrical and non-electrical energies and energy consumption, as well as cost center billing. 

A maximum of 12 analog or pulse signals can be connected, which originate, for example, from flow meters, energy meters and heat meters. In addition, up to 63 GOSSEN METRAWATT U168X series electric meters can be connected to U1601 summator via the easy to wire, pole-reversal protected, electrically isolated LON interface. 

64 processing channels calculate work, power or consumption from the above mentioned, freely assignable physical inputs. These values are summated over predefined time periods at a programmable interval, and are stored together with the respective maximum values. 

Two floating analog outputs, four MOS switches and two relays (changeover contacts) are available for the control of external processes, and can be directly activated either with the user specific summator background program, or with a PC via the interface. 

Data exchange with the PC or remote querying via modem is accomplished with the RS232 interface (115 kBit/s). An additional RS232 interface allows for the use of a radio controlled clock for system time synchronization, or a report printer. 

Individual summators can be interconnected over great distances via the multi-master compatible ECS LAN with a freely selectable network topology, and are provided with unrestricted access to data from all of the network users. Thanks to its high level of integrated intelligence and the ECL custom programming language, the U1601 summator is suited for customer specific calculations, evaluations, monitoring and optimizations as well - independent of the Energy Control System.

• Professional energy meters for 2, 3 and 4 wire systems with 65 A direct connection, or 1 A or 5 A transformer connection
• Accuracy class B for industrial and commercial use, as well as for household use with highly demanding requirements
• Cost savings thanks to initial calibration at the factory in accordance with MID, conformity assessment procedure modules B and D
• Calibration even with adjustable transformation ratios
• Configurable, multifunctional variants for acquiring reactive energy and mains quantities
• Installation errors display: phase sequence, phase failure, transformers with reversed polarity, overload
• Universal pulse output with adjustable pulse rate and pulse duration, as well as selectable voltage range
• Flexible communication via integrated LON, M-Bus or L-Bus interface
• Full functionality even when the electrical circuit is switched off thanks to failsafe 24 V auxiliary voltage
• Tamper-proof cover, configuration disabling
• 3 Years Warranty
• Made in Germany