Siemens Expert Series Operating Note page 8

Operation
Signal connection types
Signal
Pt100 / TC – sensor, internal or external
Heating current input, if applicable
STL input from safety temperature limiter
remote – local – switch-over
local – start; push-button function
local – stop; push-button function
Sensor operating mode: 0= internal; 1= external;
Input for alarm "level": 0= ok; 1= alarm
Input for alarm "flow": 0= ok, 1= alarm
Output heating
Output cooling
Output pump
alarm safety temperature
Set-point for return flow temperature
ΠSignals are only transferred in communication protocol.
 Alternative connection types
The function flow is described in the following state diagram.
T13
T14
The implemented actions executed at a change-over of states are shown in the
following table.
Functions for tempering units
Power down
T1
Standby /Rem
T3 T4
T2
Controlling / Rem
Connection types
INP1
INP2
di1...3
di1...3, F-Key
di1...3
di1...3
di1...3
di1...3
di1...3
relay OUT1..3, OUT5..6
relay OUT1..3, OUT5..6
relay OUT1..3, OUT5..6
LiM. 1
SP. 2
T7
T8
T11
T5
T9
T10
8 Operating note KS 50-1 TCont
Remarks
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Œ 
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Standby/ Loc
T6 T12
Loc
Controlling /