Siemens SINAMICS HEM Mode D'emploi page 53

Act press values
Actual pressure value
infeed
r32450[0]
p32434[0]
(r4055[0])
Minimum pressure infeed
= TM31 AI 0
p32436[0] (0.4 bar)
Pressure scaling
p32445 (30.0 bar)
Act press values
Actual pressure value
return flow
r32450[1]
p32434[1]
(r4055[1])
Minimum pressure return flow
= TM31 AI 1
p32436[2] (0.5 bar)
<1> If another pressure failure occurs on the redundant pump, the system is disconnected with F53558.
The warning is automatically reset if the affected pump could be connected without a pressure failure
(e.g. in the case of a new change, after expiration of the switchover time in p32442).
1 2
DO: TM31
HEM - Pressure evaluation
Maximum pressure infeed
p32436[1] (5.5 bar)
infeed
1
0
Hysteresis
1
0
Hysteresis
Maximum pressure return flow
p32436[3] (4.5 bar)
return flow
1
0
Hysteresis
1
0
Hysteresis
3 4
A53556 (Bit 1 = 1)
alarm
"Maximum pressure
Lower fault limit infeed
infeed exceeded"
p32446[0] (0.1 bar)
A53556 (Bit 0 = 1)
1
alarm
"Minimum pressure
0
infeed undershot"
Hysteresis
A53556 (Bit 3 = 1)
alarm
"Maximum pressure
Lower fault limit return flow
return flow exceeded"
p32446[2] (0.2 bar)
A53556 (Bit 2 = 1)
1
alarm
"Minimalum pressure
0
Return flow undershot"
Hysteresis
"Maximum pressure difference exceeded"
"Minimalum pressure difference exceeded"
5
fp_7395_95_eng.vsd
24.04.17 V01.01.00
Upper fault limit infeed
p32446[1] (5.9 bar)
HEM in operation
r32452.0
1
0
Hysteresis
Upper fault limit return flow
p32446[3] (5.9 bar)
1
1
0
Hysteresis
Fault threshold
[7396.8]
Fault threshold
[7396.8]
6 7
Function diagram
SINAMICS
128 ms
F53558
&
Pressure fault
A53557
Switching to
another pump
<1>
Option W01
p32430.0 (0)
1
0
F53558
Pressure fault
8
- 7395 -