Technical data

SED2 Operation & Maintenance Manual
56 Siemens Building Technologies, Inc.
P2376, Delay override on motor staging/destaging
The value of P2376 is set as a percentage of the PID setpoint. If the PID error (P2273) exceeds
this value, a motor is switched on or off, regardless of the delay timers (P2374 and P2375).
Setting range: 0 to 200%
Factory setting: 25%
P2377, Delay override lockout timer
This parameter is used to lock the delay override (P2376) after staging or destaging for a
specified period of time. This prevents a second staging immediately following the first staging,
that could have been triggered by the first staging.
Setting range: 0 to 650 seconds
Factory setting: 30 seconds
P2378, Staging frequency
This parameter is defined as a particular percentage of the maximum output frequency. This
determines the frequency used to switch on or off the relay (DOUT1 or DOUT2) during staging or
destaging.
Factory setting: = 50% (defined as a percentage = 100%, at fmax = 60 Hz).
t
t
f
f
5192D04en
PID Off
Relay On
PID On
PID Off Relay Off PID On
VSD freq.
VSD freq.
Staging freq.
Max. freq.
Min. freq.
Staging freq.
Max. freq.
Min. freq.