Siemens RVL471 - 25 Function Block Service Functions and General Settings; Operating Lines; Display Functions; Flow Temperature Setpoint

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 25 Function block "Service functions and general settings" 23.10.2002
25 Function block "Service functions and
general settings"
Function block "Service functions and general settings" is used to combine various
displays and setting functions that are of assistance in connection with commissioning
and service work. In addition, a number of extra functions are performed.
The service functions are independent of the type of plant.
25.1 Operating lines
Line Function, parameter Unit
Factory
setting
Range
161 Outside temperature simulation °C --.- --.- / −50...+50
162 Relay test 0 0...9
163 Sensor test Display function
164 Test of H-contacts Display function
165 Flow temperature setpoint Display function
166 Resulting heating curve Display function
167 Outside temperature for frost protection for the plant °C 2.0 --.- / 0...25
168 Flow temperature setpoint for frost protection for the
plant
°C 15 0...140
169 Device number 0 0...16
170 Segment number 0 0...14
171 Flow alarm hh:mm --:-- --:-- / 1:00...10:00
172 Operating mode when terminals H1–M are bridged 0 0...9
173 Gain of locking signal % 100 0...200
174 Pump overrun time min 6 0...40
175 Pump kick 0 0/1
176 Winter- / summertime changeover dd:MM 25.03 01.01. ... 31.12
177 Summer- / wintertime changeover dd:MM 25.10 01.01. ... 31.12
178 Clock mode 0 0...3
179 Bus power supply A 0 / A
180 Outside temperature source A A / 00.01... 14.16
181 DC 0–10 V heat demand output U
X
°C 130 30...130
194 Hours run counter Display function
195 Controller's software version Display function
196 Identification code of room unit Display function
197 Radio clock, time elapsed since last reception Display function
25.2 Display functions
25.2.1 Flow temperature setpoint
Displayed is the current flow temperature setpoint which is made up of the following
variables:
• Flow temperature setpoint in function of the composite outside temperature and the
heating curve
• Position of the knob for room temperature readjustments
• Parallel displacement (setting on operating line 72)
With demand-compensated control (plant types 4–x, 5–x, and 6–x), the display
shows ---.