Xylem GOULDS e-AB Series, Инструкция по эксплуатации

Страница: 38 / 56

Parameter
number
Parameter name Unit of measurement Description
P34 Speed Min Configuration
[STP, SMI]
G
This parameter defines the operation of the Hydrovar
®
controller once the minimum speed of the pump is
reached (P27):
• STP (STP): once the required pressure is reached
and no further request is made, the pump speed
decreases to the selected P27 value: Hydrovar
®
then keeps running for the selected time interval
(P35), and then stops automatically.
• SNI (SMI): once the required pressure is reached
and no further request is made, the pump speed
decreases to the selected P27 value: Hydrovar ®
continues running at the same speed. This
parameter affects the control of the pump for HCS,
MSE and MSY control modes.
Default: STP
P35 Smin time [0-100]
G
s This parameter sets the time delay before a shut-off
below P27 occurs.
It is only used by the Hydrovar
®
controller if P34 =
STP.
It affects the control of the pump for HCS, MSE and
MSY control modes.
Default: 0 s.
P36 Window [0-100]
G
% This parameter sets the ramp control interval, as a
percentage of the pressure setpoint.
It is used to define the range of pressures, around the
setpoint, in which the Hydrovar
®
controller uses slow
acceleration and deceleration ramps instead of fast
ones.
It affects the control of the pump for HCS, MSE and
MSY control modes (also see Par. 6.6.2).
Default: 10%.
P37 Hysteresis [0-100]
G
% This parameter sets the slow ramp hysteresis, as a
percentage of P36.
It helps define the pressure range, around the
setpoint, in which Hydrovar
®
goes from slow
acceleration ramp (P28) to slow deceleration ramp
(P29).
The parameter affects the control of the pump for
HCS, MSE and MSY control modes (also see Par.
6.6.2).
Default: 80%.
P38 Speed Lift [0-MAX*]
G
rpmx10 This parameter sets the speed limit after which the
linear increase of the actual require value starts (P02),
until the total increase (P39) at maximum speed
(P26).
Default: P27.
P39 Lift Amount [0-200]
G
% This parameter sets the increase value of the actual
required value (P02) at the maximum speed (P26),
measured as a percentage of the required value
(P01).
It determines the increase of the required pressure
set, useful to compensate for flow resistances at high
flow rates.
Default: 0.
6 System Setup and Operation
36 Smart Pump Range INSTRUCTION MANUAL