User Manual

 Data acquisition
Function
s
– Pulse meter (for display only, not for billing purposes).
– Hours run counter.
– Trend data display.
– Event logging (e.g. for legionella function).
 Control and monitoring functions
– Universal motor blocks.
– Rotary step switch (with lead/lag control of pumps, fans, motors, refrigeration
machines, etc.).
– Logic function blocks.
– 7-day time switches.
– Comparison (comparison of analog input signals).
– Calculators (default formulas, user-defined formulas).
– Minimum/maximum, averaging.
– Enthalpy calculation.
– Signal inverter/signal doubler.
– Heating and cooling demand from and via KNX bus.
– Heating / cooling changeover.
– Fault messages (additional universal alarm inputs).
 Control functions
– Universal controller (limiting function, universal shift, etc.).
 Bus functions
– Universal bus applications.
– KNX data exchange zones (send and receive LTE bus information).
 Service and operating functions
– Outside temperature simulation, input terminal simulation, etc.
1x RMS705B (8 universal inputs, 6 digital outputs, 4 analog outputs) +.
Module combination
4x extension modules (maximum extension).
(Selection from 1x RMZ785, 2x RMZ787 and 2x RMZ788).
Maximum extension results:
 Maximum 28 universal inputs
(LG-Ni1000, 2x LG-Ni1000, Pt1000, T1, DC 0...10 V, 0…1000 Ω, pulse, digital)
 Maximum 18 relay control outputs
 Maximum 8 modulating outputs DC 0...10 V
7 / 216
Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Overview 01.04.2010