User Manual

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Building Technologies Switching and Monitoring Device RMS705 CE1N3123en
HVAC Products 30 May 2008
7-day time switches
Six 7-day time switches provide the following functions:
• 6 switch-on or switch-off times per day, configurable relay output
• Yearly time switch with automatic summer- / wintertime changeover
• Operation selector (AUTO, ON, OFF), can be configured for manual control
• Configurable holiday and special day program
• From other 7-day time switches via the KNX bus as slaves (sending not possible)
Logic function blocks
10 freely configurable logic function blocks are available; they are used for handling
several logically connected universal input variables.
• Configurable AND, NAND, OR, NOR, EXOR and EXNOR logic functions
• Adjustable switch-on and switch-off delays
• Adjustable minimum on and off times
• Operation selector (AUTO, ON, OFF), configurable for manual control
Comparators
2 comparators are available; they are used for comparing 2 analog input signals.
Output signal with adjustable switch-on and switch-off delays and adjustable minimum
on and off times.
Universal motor blocks
6 universal motor blocks are available; they are used for controlling and monitoring
motors:
• 1-speed motors (pumps, fans)
• 2-speed motors (fans)
• Twin motors (twin pumps)
• Precommand for dampers or valves installed upstream
• Adjustable times
• Motor kick and switching on at low outside temperatures
• Hours run counter per motor block
Rotary step switches
2 rotary step switches are available affording selectable step switch characteristics per
block:
• Linear step switch
• Binary step switch
• Flexible step switch
• With stepwise precommand, switching and modulating outputs
• Lead / lag control of pumps, fans, motors, refrigeration machines, etc., with auto-
matic changeover
• Adjustable times
Universal controllers
There are 3 universal controllers as PID sequence controllers each with 2 sequence
outputs (1 heating sequence and 1 cooling sequence).
• Control to an absolute variable or a differential
• Individually adjustable heating and cooling setpoints (or upper and lower setpoints)
• Adjustable control timeout
• Universal shift: Setpoint can be shifted depending on another variable, or it can be
adapted via a remote setpoint adjuster
• Display of fault status messages from other devices via bus
• Output of a common fault status message of all devices on the bus to a fault relay
• Time synchronization
• Delivery and adoption of outside temperature signal
Control functions
Setpoints
Bus functions