1.7 Performance
Summary of features and functions of the RMS705B:
Overvi
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Features/Functions RMS705B
Max. 4 connectable extension modules. Selection from:
Extension with 1 universal module RMZ785
with 8 universal inputs.
Extension with 2 universal modules RMZ787
with 4 universal inputs and 4 relay outputs each.
Extension with 2 universal modules RMZ788
with 4 universal inputs, 2 analog outputs, and 2 relay outputs each.
Universal inputs (RMS705B and extension modules) Max. 28
(8 + 8 + 4 + 4 + 4)
As analog input DC 0...10 V
As analog input LG-Ni1000
As analog input Pt1000
As analog input T1
As analog input 2x LG-Ni1000
As remote setpoint adjusted input, absolute
As digital input
As pulse input
Relay outputs (RMS705B + extension modules) Max. 18
(6 + 4 + 4+ 2 + 2)
Modulating outputs (RMS705B + extension modules)
Max. 8
(4 + 2 + 2)
Fault messages
Free fault inputs (digital or analog)
20
Fault status signal relay
2
Online trend channels
4
Event logger
4
Operating hours with maintenance message
4
Pulse counter with storage of 15 monthly values
4
Time switches (for weekdays, holidays/special days) with operation selector
6
Calendar
Logic block for operations (AND, NAND, OR, NOR, EXOR, EXNOR)
with operation selector
10
Comparator for comparing two analog variables
2
Universal controller with 1 heating and 1 cooling sequence \_/
3
General limiting function (min/max) with PI-response
Absolute or differential control
Universal setpoint shift
Remote setpoint adjuster
Setpoint changeover
Rotary step switch (lead/lag)
2
Changeover for 4 aggregates
Heating demand signal: Relay and modulating
Cooling demand signal: Relay and modulating
Changeover for 2-pipe system H/C
Motors with control functions for:
6
Motor, single-stage
Motor, two-stage
Twin motors with priority changeover
Calculators
2
Min., max., and average calculation.
2
Enthalphy calculator
Signal inverter/signal doubler
12 / 216
Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Overview 01.04.2010
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