Siemens SED2 Series, Руководство по эксплуатации

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Siemens Building Technologies SED2 variable speed drives CM1U5192en
HVAC Products Programming 01.2002
6.4.7 Hibernation mode
If the VSD reaches the hibernation setpoint in PID operating mode, the hibernation
timer P2391 starts. After the timer has expired, the VSD drives the output frequency of
the ramp to 0 Hz. See illustration below.
f
0%
T1 T2 T3 T4 T5
Output [Hz ]
P2392 Restart freq.
P2390 Hibernation freq.
Min. freq.
P2391
Hibernation timer
Hibernation
mode
Restart
Drive frequency
PID frequency
max.
hibernation
(-) error [%]
Time [s]
Time [s]
5192D06en
PID error [% ]
T1 – Hibernation frequency reached.
– Start of hibernation timer.
T2 Minimum output frequency reached.
T3
– Output frequency decreased in accordance with the set ramp.
– PID control of the output frequency is interrupted.
T4 Output frequency = zero (motor standstill).
T3 to
T5
The PID fault signal [%] is monitored.
Note:
– The polarity of the PID fault signal.
– The polarity of the PID fault signal must match the sequence of the
controlled functions (cooling/heating or vice-versa).
– The temperature setpoint can be below 0 °C.
– The PID fault signal can be positive or negative.
T5
– The VSD output frequency is again increased.
– The PID control of the output frequency is again enabled.