Danfoss vlt aqua Programming Guide

[120] Lead Pump Start Starts/Stops the Lead Pump (controlled by the frequency con-
verter). A start requires that also a System Start signal has been
applied e.g. to one of the digital inputs set for
Start [8]!
[121] Lead Pump Alterna-
tion
Forces alternation of the lead pump in a Cascade Controller.
Lead Pump Alternation , par. 25-50, must be set to either At
Command
[2] or At Staging or At Command [3]. Alternation
Event
, par. 25-51, can be set to any of the four options.
[130 -
138]
Pump1 Interlock -
Pump9 Interlock
For the above 9 setting options, par. 25-10, Pump Interlock,
must be set to
On [1]. The function will also depend on the
setting in par. 25-06, Fixed Lead Pump. If set to
No [0], then
Pump1 refers to the pump controlled by relay RELAY1 etc. If set
to
Yes [1], Pump1 refers to the pump controlled by the fre-
quency converter only (without any of the build in relays in-
volved) and Pump2 to the pump controlled by the relay RELAY1.
Variable speed pump (lead) cannot be interlocked in the basic
Cascade Controller.
See below table:
Setting in Par. 5-1*
Setting in Par. 25-06
[0] No [1] Yes
[130] Pump1 In-
terlock
Controlled by RE-
LAY1
(only if not lead
pump)
Frequency Con-
verter controlled
(cannot be inter-
locked)
[131] Pump2 In-
terlock
Controlled by RE-
LAY2
Controlled by RE-
LAY1
[132] Pump3 In-
terlock
Controlled by RE-
LAY3
Controlled by RE-
LAY2
[133] Pump4 In-
terlock
Controlled by RE-
LAY4
Controlled by RE-
LAY3
[134] Pump5 In-
terlock
Controlled by RE-
LAY5
Controlled by RE-
LAY4
[135] Pump6 In-
terlock
Controlled by RE-
LAY6
Controlled by RE-
LAY5
[136] Pump7 In-
terlock
Controlled by RE-
LAY7
Controlled by RE-
LAY6
[137] Pump8 In-
terlock
Controlled by RE-
LAY8
Controlled by RE-
LAY7
[138] Pump9 In-
terlock
Controlled by RE-
LAY9
Controlled by RE-
LAY8
5-10 Terminal 18 Digital Input
Option: Function:
[8]
*
Start Same options and functions as par. 5-1* Digital Inputs , except
for
Pulse input .
2. Parameter Description VLT
®
AQUA Drive Programming Guide
82 MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2

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