Danfoss vlt aqua Programming Guide

25-24 SBW Destaging Delay
Range: Function:
15 sec.
*
[0-3000 sec.] Immediate destaging of a fixed speed pump is not desirable
when a momentary pressure increase in the system that ex-
ceeds the Staging Bandwidth (SBW). Destaging is delayed by
the length of time programmed. If the pressure decreases to
within the SBW before the timer has elapsed, the timer is reset.
25-25 OBW Time
Range: Function:
10 sec.
*
[0 – 300 sec. ] Staging a fixed speed pump creates a momentary pressure peak
in the system, which might exceed the Override Bandwidth
(OBW). It is not desirable to destage a pump in response to a
staging pressure peak. The OBW Time can be programmed to
prevent staging until the system pressure has stabilized and
normal control established. Set the timer to a value that allows
the system to stabilize after staging. The 10 second factory set-
ting is appropriate in most applications. In highly dynamic sys-
tems, a shorter time may be desirable.
2. Parameter Description VLT
®
AQUA Drive Programming Guide
232 MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled