Samson TROVIS 5575, Mounting And Operating Instructions

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Example to determine the limit value:
If a capacity of 30 kW is to be limited, the following limit value must be set for a heat meter
with an output of one pulse per kilowatt-hour:
P
= =
30 kW
1 kWh / pulse
30 pulse / h
Note!
If CO5 -> F00 - 1 is indicated, access to the return flow, flow rate and heat capacity settings
are locked.
Functions WE Configuration
Flow rate limitation (capacity limi-
tation) in Rk1 with pulses at input
WMZ 0
15
pulse
h
15
pulse
h
15
pulse
h
1.0
CO5 -> F10 - 1
Max. limit value/ 3 to 500
pulse
h
Max. limit value heating* / 3 to 500
pulse
h
Max. limit value DHW* / 3 to 500
pulse
h
Limiting factor / 0.1 to 10.0
Flow rate limitation in Rk1 with
0/4 to 20 mA at input WMZ 0 CO5 -> F11 - 0
* Not in Anl 1.0, 1.5, 1.6, 3.0, 3.5, 4.0 and 11.x
7.10.2 Limitation using 0/4 to 20 mA signal
Depending on the operating situation, a heat meter at input WMZ/Bed (terminals 03/13)
with a 0/4 to 20 mA output (connected in parallel to input WMZ/Bed using 50
Ω
) can be
used to limit the flow rate in the system. All limit values are given in the unit “cubic meters
per hour“ [m
3
/h]. As a result, both a
Lower measuring range value 0 or 4 mA and an Up-
per measuring range value must be adjusted in unit [m 3 /h]. The current flow rate in [m 3 /h]
is displayed in the extended operating level (–> key number 1999).
When the flow rate reaches the current
Max. limit value, the flow set point of control circuit
Rk1 is reduced. How strongly the controller responds is determined by the
Limiting factor.
Note!
If CO5 -> F00 - 1 is indicated, access to the return flow, flow rate and heat capacity settings
are locked.
EB 5575 EN
81
System-wide functions