Function Block: Actuator Heating Circuit; Operating Lines; Limitations; Flow Temperature Limitations - Siemens RVP360 Basic Documentation

Settings
Impact on d.h.w.
heating
44/106
Siemens
Building Technologies
11

Function block: Actuator heating circuit

This function block provides control of the heating circuit. It acts as follows, de-
pending on the type of plant:
Weather-compensated on the mixing valve of a space heating system
Weather-compensated, on the valve in the primary return of a space heating
system with a district heat connection
11.1

Operating lines

Line Function, parameter
81 Maximum limitation flow temperature
82 Minimum limitation flow temperature
83* Maximum rate of flow temperature increase
84* Setpoint boost mixing valve
85* Actuator running time
86* P-band of control
87* Integral action time of control
88* Type of actuator
89* Switching differential
* Note: With plant type 6 – x, operating lines 83 through 89 can only be set for heating circuit 2!

11.2 Limitations

11.2.1 Flow temperature limitations

The following settings can be made:
Maximum limitation of flow temperature: At the limit value, the heating curve
runs horizontally. This means that the flow temperature setpoint cannot exceed
the maximum value; it is limited
Minimum limitation of flow temperature: At the limit value, the heating curve runs
horizontally. This means that the flow temperature setpoint cannot fall below the
minimum value; it is limited (not with locking signals)
If the setpoint is limited, the display shows:
= maximum limitation
= minimum limitation
Both limitations can be deactivated (setting ---).
Minimum limitation can be overridden during storage tank charging, depending on
the type of priority.
Basic Documentation RVP360
11 Function block: Actuator heating circuit
Factory setting
Unit
(range)
--- (--- / 0...140) °C
--- (--- / 0...140) °C
--- (--- / 1...600) K/h
10 (0...50) K
120 (30...873) s
32.0 (1...100) K
120 (10...873) s
1 (0 / 1)
2 (1...20) K
CE1P2546en
Heating
circuit
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
1, 2
2017-07-24