ABB ACQ810 - Page 246

246 Parameters
75.04 Follower ref Only visible when Multipump is selected at parameter 75.01
Operation mode.
Defines the reference used when parameter 75.03 Follower
mode is set to Const speed, and the drive is running as a
follower.
The following diagram illustrates the starting of the drives in
a typical multipump configuration as the reference (flow
demand) first increases, then decreases. Follower start and
stop delays (parameters 75.19 Start delay and 75.20 Stop
delay) are ignored in this presentation.
0…32767 rpm Reference setting. This should generally be set at the
optimal operating point of the pump.
1 = 1 rpm
No. Name/Value Description FbEq
Time
Time
75.04 Follower ref
75.05 Start speed 1
Drive 1
Speed
Status (M = Master; F = Follower; S = Stopped)
MF
75.04 Follower ref
75.06 Start speed 2
Drive 2
Speed
Status (M = Master; F = Follower; S = Stopped)
F (S) MF
Drive 3
Speed
Status (M = Master; F = Follower; S = Stopped)
F (S) M
Time
Time
75.13 Stop speed 2
75.12 Stop speed 1
F (S)
M F (S)
Reference
M