Delta VFD13AME43ANNAA User Manual

Chapter 12 Description of Parameter SettingsME300
12.1-12-2
 When the change of feedback value is less than the settings for Pr.12-03 and Pr.12-04, the liquid
leakage occurs. When the system is in constant pressure status, the AC motor drive starts to run
if the feedback value is higher than these two settings.
Example:
If the set point of constant pressure control of a pump is 4 kg, Pr.12-00 is set to 5%, Pr.12-01 is
set to 15 seconds, Pr.12-02 is set to 25%, Pr.12-03 is set to 3% and Pr.12-04 is set to 0.5
seconds, then the offset is 0.2 kg (4 kgX5%=0.2 kg). It means when the feedback value is higher
than 3.8 kg for a time exceeding 15 seconds, the AC motor drive decelerates to stop (this
deceleration time acts according to Pr.01-15). When the feedback value is less than 3.8 kg, the
AC motor drive starts to run.
Status 1:
If the AC motor drive is in the constant pressure status and the feedback change value is less
than 0.12 kg within 0.5 seconds. The AC motor drive does not run until the feedback value
decreases by this proportion to the value less than 3 kg.
Status 2:
When the AC motor drive is in constant pressure, it does not run until the feedback change value
is less than 3.88 kg for a time exceeding 0.5 seconds.
Multi-Pump Control Mode
Default: 0
Settings 0–2
0: Disable
1: Fixed time circulation (alternative operation)
2: Fixed quantity control (multi-pump operating at constant pressure)
 When using multi-pump control mode, the setting for Pr.12-05 of each pump must be the same.

Multi-pump’s Fixed Time Circulation Period
Default: 60
Settings 1–65535 (minute)
 Fixed time circulation mode (alternative operation). For example, when pump 01’s operating time
is longer than the setting at Pr.12-07, pump #1 is stopped then pump #2 is activated, so on and
so forth.
 Fixed quantity control (multi-pump runs at constant pressure). For example, when master pump’s
operating time is longer than the setting at Pr.12-07, master pump switches to the slave pump.
 This parameter only applies for the master pump.

Delta VFD13AME43ANNAA Specifications

General

Brand	Delta
Model	VFD13AME43ANNAA
Category	DC Drives
Language	English