Cascade Control Wizard - Danfoss VLT Series Quick Manual

Quick Guide

1.5.3 Cascade Control Wizard

P1-00=Closed Loop
P25-00=Enabled
P25-05 (Fixed lead Pump)
[0] No
*
[1] Yes
P25-57 (Relays per Pump)
1
2
P25-04 (Pump Cycling)
[0] Disable
[1] Enable
P25-06 (Number of Pump)
2-5
Setting the parameter value might change these
if P25-05=Yes
parameters
On Delay, Digital Output (P 534)
O Delay, Digital Output (P 535)
Terminal 27 Digital Output (P 530)
Terminal 29 Digital Output (P 531)
Terminal 45 Digital Output (P 672)
Terminal 42 Digital Output (P 692)
P25-50 (Lead Pump Alternation)
[* [0] O
[1] At staging
[2] At command
[3] At staging or command
P25-51(Alternation Event)
*
[0] External
[1] Alternation Time Interval
[2] Sleep Mode
P25-52 (Alternation Time Interval)
1-999 *24
P25-55 (Alternate if Load
[0] Disabled
*
[1] Enabled
P25-56 (Staging Mode at Alternation)
*
[0] Slow
[1] Quick
P25-58 (Run Next Pump Delay)
0.1-5.0 s
P25-59 (Run on Mains Delay)
Expression limit
P25-20 (Staging Bandwidth)
1 - Expression limit
P25-21(Override Bandwidth)
Expression limit
Illustration 1.18 Cascade Control Wizard (Recommended Logistic)
®
VLT HVAC Basic Drive Cascade Controller Quick Guide
50%)
* 0.1
(0.1)-5.0 s *0.1 s
(100)% *10%
(100)-100% *100%
®
MG18F402 - VLT is a registered Danfoss trademark
P25-22 (Fixed Speed Bandwidth)
(1)-(100)% *(10%)
P25-23 (SBW Staging Delay)
0-3000 s s
P25-24 (SBW Destaging Delay)
0-3000 s s
25-25 (OBW Time)
0-300 s s
Enable
25-27 (Stage Function)
25-28 (Stage Function Time)
[0] Disabled
0-300
*
[1] Enabled
Enable
25-29 (Destage Function)
25-30 (Destage Function Time)
[0] Disabled
*
[1] Enabled
25-42 (Staging Threshold)
(0)-100%
25-43 (Destaging Threshold)
(0)-100%
s s
0-300 s s
23
1 1