Evoqua WALLACE & TIERNAN SFC, Original Instruction Manual

Page: 90 / 288

90
WT.050.590.000.DE.IM.0719
Functions
SFC
4.
Tp
Meaning:
Cycle period
Display:
Seconds (s)
Explanation:
The parameter Tp only applies to dosing pumps.
The cycle period Tp defines a switching period, which must be
coordinated with the respective pump type.
Setting range:
The parameter Tp can be set from 10 – 180 s.
Example:
Fast dosing pumps correspond to a low Tp; slow dosing pumps
correspond to a high Tp.
The control parameter Tp must always be adjusted to suit the
pump employed:
Ts
Meaning:
Loop rise time
Display:
Minutes (min)
Explanation:
Time required to reach the measuring range end value with 100%
dosing chemical supply (see 4.9 “Adaption”)
Setting range:
The parameter Ts can be set from 1 s – 8 h.
Please note
If the values Tu and Ts are manually modified, the control
parameters Xp and Tn are re-calculated.
Dosing pump strokes/min up to 20 20-40 40-80 80-125 125-200
Tp value 120 100 60 30 15