Siemens SED2 Series User Manual

70/126
Siemens Building Technologies SED2 variable speed drives CM1U5192en
HVAC Products Programming 01.2002
As a rule, the factory settings can be used.
P2371
Defines the configuration of additional pumps or fans.
Max. 2 pumps can be added.
Factory setting: 0
Maximum setting: 2
P2372
Enable motor cycling
If this parameter is enabled, one or two motors are switched on or off—during staging,
in addition to the speed-controlled motor—in a specified sequence based on the motor
operating hours (parameter 2380). During staging, the motor having the lowest number
of operating hours is first switched on. During destaging, the motor having the highest
number of operating hours is first switched off.
In the case of different output of the motors to be switched on, the motor promising to
best satisfy the demanded output is switched on first, regardless of its operating hours.
Factory setting: 0 (disabled).
P2373
Defines the staging hysteresis: Value in % of the PID setpoint.
Setting range: 0 to 200 %
Factory setting: 20 %
P2374
Delay on staging
Setting range: 0 to 650 s
Factory setting: 30 s
P2375
Delay on destaging
Setting range: 0 to 650 s
Factory setting: 30 s
P2376
Overriding the delay on staging/destaging
The value of P2376 is set as a percentage of the PID setpoint. If the PID fault (P2273)
exceeds this value, a motor is switched on or off, regardless of the delay time set in
P2374 and P2375.
Setting range: 0 to 200 %
Factory setting: 25 %
P2377
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, for example, could have been triggered by the first staging.
Setting range: 0 to 650 s
Factory setting: 30 s
Parameterizing motor
staging
(commissioning)

Siemens SED2 Series Specifications

General

Brand	Siemens
Model	SED2 Series
Category	Inverter
Language	English