User Manual

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Building Technologies Switching and Monitoring Device RMS705 CE1N3123en
HVAC Products 30 May 2008
Functions
8 to 28
*)
universal inputs for:
• Passive or active analog input signals of various measuring variables (°C, %, g/kg,
kJ/kg, W/m
2
, bar, mbar, m/s, Pa, ppm, BTU, without unit, pulse)
• Digital input signals (potential-free contacts)
*) When using extension modules: 1 x RMZ787 + 2 x RMZ785
Additional inputs and outputs can be provided for extending the unit’s functionality.
A maximum of 3 extension modules per RMS705 can be connected. Suited are the
following types of modules:
• Maximum 2 universal modules type RMZ785 (8 UI)
• Maximum 2 universal modules type RMZ787 (4 UI, 4 DO)
As a maximum, each RMS705 has:
• 28 universal inputs (Ni1000, Pt1000, T1, DC 0...10 V, 0…1000 Ω, digital, pulses)
• 14 control output relays
• 4 modulating outputs DC 0...10 V
Pulse counter (for display only, not for billing purposes)
4 counters are available for acquiring consumption values.
Pulses from gas, hot water, cold water and electricity meters can be handled.
• Pulse counting (Wh, kWh, MWh, kJ, MJ, GJ, ml, l, m
3
, heat cost units, BTU, without
unit)
Hours run meters
There are 4 hours run meters showing:
• The total number of operating hours
• Maintenance messages (with adjustable interval)
• The number of operating hours since the last maintenance visit
Trend display of data
4 independent trend channels are available for recording measuring variables.
In addition to the local inputs of the unit, it is also possible to log room temperatures
and the outside temperature delivered via the KNX bus.
Event logger (e.g. for the legionella function)
4 event loggers are available; they are used for recording events and for monitoring
their scheduled occurrence.
• Logging the last 10 events per logger with time of day and date stamp when "Limit
value on" and "Limit value off" are reached
• Saving the maximum or minimum value during the period of time the event occurs
• Selectable fault status message when the minimum or maximum
– event cycle time is crossed
– event duration is exceeded
Fault status block
A fault status block is available featuring:
• 20 fault status inputs, configurable via universal inputs (analog and digital) and fault
status messages delivered via the KNX bus
• Fault indication with red LED, acknowledgement via button
• 2 relay outputs, configurable as fault relays
• 1 digital input, for the external reset of fault status messages
Universal inputs
Additional I/Os via
extension modules
Data acquisition
Switching and
monitoring functions