Danfoss vlt aqua Operating Instructions

6.4.21 Cascade Controller 25-**
Par.
No. #
Parameter description Default value 4-set-up Change dur-
ing operation
Conver-
sion index
Type
25-0* System Settings
25-00 Cascade Controller null 2 set-ups FALSE - Uint8
25-02 Motor Start [0] Direct on Line 2 set-ups FALSE - Uint8
25-04 Pump Cycling null All set-ups TRUE - Uint8
25-05 Fixed Lead Pump null 2 set-ups FALSE - Uint8
25-06 Number of Pumps 2 N/A 2 set-ups FALSE 0 Uint8
25-2* Bandwidth Settings
25-20 Staging Bandwidth SR All set-ups TRUE 0 Uint8
25-21 Override Bandwidth 100 % All set-ups TRUE 0 Uint8
25-22 Fixed Speed Bandwidth
casco_staging_bandwidth
(P2520) All set-ups TRUE 0 Uint8
25-23 SBW Staging Delay 15 s All set-ups TRUE 0 Uint16
25-24 SBW Destaging Delay 15 s All set-ups TRUE 0 Uint16
25-25 OBW Time 10 s All set-ups TRUE 0 Uint16
25-26 Destage At No-Flow [0] Disabled All set-ups TRUE - Uint8
25-27 Stage Function null All set-ups TRUE - Uint8
25-28 Stage Function Time 15 s All set-ups TRUE 0 Uint16
25-29 Destage Function null All set-ups TRUE - Uint8
25-30 Destage Function Time 15 s All set-ups TRUE 0 Uint16
25-4* Staging Settings
25-40 Ramp Down Delay 10.0 s All set-ups TRUE -1 Uint16
25-41 Ramp Up Delay 2.0 s All set-ups TRUE -1 Uint16
25-42 Staging Threshold SR All set-ups TRUE 0 Uint8
25-43 Destaging Threshold SR All set-ups TRUE 0 Uint8
25-44 Staging Speed [RPM] 0 RPM All set-ups TRUE 67 Uint16
25-45 Staging Speed [Hz] 0.0 Hz All set-ups TRUE -1 Uint16
25-46 Destaging Speed [RPM] 0 RPM All set-ups TRUE 67 Uint16
25-47 Destaging Speed [Hz] 0.0 Hz All set-ups TRUE -1 Uint16
25-5* Alternation Settings
25-50 Lead Pump Alternation null All set-ups TRUE - Uint8
25-51 Alternation Event [0] External All set-ups TRUE - Uint8
25-52 Alternation Time Interval 24 h All set-ups TRUE 74 Uint16
25-53 Alternation Timer Value 0 N/A All set-ups TRUE 0
VisStr[7
]
25-54 Alternation Predefined Time SR All set-ups TRUE 0
TimeOf-
DayWo-
Date
25-55 Alternate if Load < 50% [1] Enabled All set-ups TRUE - Uint8
25-56 Staging Mode at Alternation [0] Slow All set-ups TRUE - Uint8
25-58 Run Next Pump Delay 0.1 s All set-ups TRUE -1 Uint16
25-59 Run on Mains Delay 0.5 s All set-ups TRUE -1 Uint16
VLT AQUA Low Harmonic Drive Operating In-
structions 6 How to Programme the Low Harmonic Drive
MG.20.T1.02 - VLT
®
is a registered Danfoss trademark 141
6

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled