Operating Instructions

SED2 VFD Operation & Maintenance Manual
64 Siemens Building Technologies, Inc.
P2375, Delay on motor destaging
Time that error (P2374) must exceed hysteresis before staging occurs.
Setting range: 0 to 650 seconds
Factory setting: 30 seconds
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).