Lock Time; Display Current State - Siemens RMB795B Basic Documentation

Key
Note
Setting values
108 / 144
Siemens
Building Technologies
bus
T 1
2
3
Ref Element
.
1
Heat generation
2
Refrigeration
3
Changeover valve
4
Manual switching to changeover valve and function block "H/C changeover"
5
Forwarding the "Heating / cooling" changeover signal via bus
The central control unit RMS795B does not perform any control functions
(precontrol) here, but only the collection of the demand signals and passing them
on to the relevant source (generation of heat or refrigeration) via function blocks
"Heat demand" and "Refrigeration demand".

11.6.5 Lock time

To prevent the refrigeration machine from switching on immediately following
switch-off of heat generation, a locking time can be set.
Control is locked during the locking time so that no heat or refrigeration demand is
generated and forwarded.
Excessive inlet temperature at the refrigeration machine can damage the
refrigeration machine.
Main menu > Commissioning > Settings > Heating/cooling ch'over >
Operating line
Locking time
The locking time acts also after a power drop-related switch-off of the device and
when exiting the Commissioning menu.

11.6.6 Display current state

The current state is displayed in menu "Heating/cooling changeover":
Main menu > H/C changeover
Operating line
2-pipe heating /cooling
system
Central control unit RMB795B
Distribution zones
4
RMB795
H / K changeover
Area
00.00...23.50 h.m
Comments
Heating / cooling
RXB RXB
T
Factory setting
00.30 h.m
CE1P3122en
18.01.2012
5
T