Assortment / System Description

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Signal converter SEZ220
The SEZ220 signal converter with its functions (see Data Sheet N5146) comple-
ments the applications of the Synco 200 and Synco 700 controllers.
The signal converter is used in connection with a controller, for example, if the
enthalpy or the dewpoint temperature need be calculated, or if minimum selection
from several temperature signals is required.
The SEZ220 is based on the same hardware as the Synco 200 universal
controllers RLU. Mounting and wiring are identical also.
The SEZ220 operates on AC 24 V (safety extra low-voltage SELV/PELV).
Display and operation are practically identical with the RLU universal controllers.
Universal inputs X1…X5, configurable for passive or active analog signals:
LG-Ni1000, 2 x LG-Ni1000 (averaging), Pt1000, T1, 0...1000 Ω, DC 0...10 V.
Analog outputs Y1 and Y2: positioning signal DC 0...10 V/1 mA.
MIN-MAX-AVR
ENTHALPY
2X-INV
X1
X2
X3
X4
X5
Y1
Y2
SPLIT
5146Z04
SEZ220
Minimum/maximum selection and averaging:
• Selection of maximum input signals of inputs X1…X5
• Selection of minimum input signals of inputs X1…X5
• Calculation of average value of inputs X1…X5
• Weighting factor FACTIN. For calculation of the average value, input X1 can
be weighted. The number of input signals for making calculations can thus be
multiplied
• Configuration parameter SPLIT. This parameter is used to assign the MIN, MAX
and AVR functions to inputs X1…X2 and X3…X5. This makes it possible to
select the maximum input signal of X1…X2 and the minimum input signal of
X3…X5, for instance, or to calculate the average value of inputs X1…X2 and
X3…X5
Enthalpy processor for calculating:
• Enthalpy based on passive temperature signals and active humidity signals
• Enthalpy difference of 2 groups of signals based on temperature signals
(passive) and humidity signals (active)
• Absolute humidity based on temperature (passive) and humidity signals (active)
• Dewpoint temperature based on temperature (passive) and humidity signals
(active)
• Doubling of signals for sequential control of aggregates and components
(valves, pumps, fans)
• Signal inversion from DC 0...10 V to DC 10...0 V
• Signal conversion of a passive temperature signal to 2 active signals
Brief description
Inputs and outputs
Function blocks
MIN-MAX-AVR
ENTHALPY
2X-INV