2 Application Types
2.1 Overview
100%
100%
200%
200%
130BA594.12
Rela
y 1
Rela
y 2
Rela
y 10
Built-
in
1 VSP + 2 FSP
parameter group
25-** Cascade
Controller
-
-
MCO
101
1 VSP + 5 FSP
parameter group
25-** Cascade
Controller
1 to 6 VSP + 1 to 5 FSP
(max. 6 pumps)
parameter group
27-** Cascade
CTL Option
6 VSP
parameter group
27-** Cascade
CTL Option
MCO
102
1 VSP + 8 FSP
parameter group
25-** Cascade
Controller
1 to 8 VSP + 1 to 7 FSP
(max. 8 pumps)
parameter group
27-** Cascade
CTL Option
8 VSP
parameter group
27-** Cascade
CTL Option
Table 2.1 Application Overview
VSP = Variable Speed Pump (directly connected to the frequency
converter)
FSP = Fixed Speed Pump (the motor could be connected via
contactor, soft starter or star/delta starter)
2.2 Supported Configurations
When setting-up the system, create a hardware configu-
ration, which communicates the number of connected
pumps and frequency converters to the master. The
necessary hardware is explained in the following hardware
configuration examples.
2.2.1 Extension of Basic Cascade -
Parameter Group 25** Control Mode
Use of the extended cascade option MCO 101 as an
extension of the built-in basic cascade in the frequency
converter
In applications already controlled by the built-in Cascade
Controller in parameter group 25-**, the option card can
be used to extend the numbers of relays for cascade
control. For instance if a new pump is added to the
system.
Enable the Basic Cascade Controller in
27-10 Cascade
Controller
by selecting
[3] Basic Cascade Ctrl
. Refer to
VLT
®
AQUA Drive Programming Guide
for further programming
with parameter group 25-** settings.
Illustration 2.1
and
Illustration 2.2
show the external wiring
needed for systems with alternating lead pump of 4
pumps using basic cascade and MCO 101 as relay
extension.
Application Types
VLT
®
AQUA Drive MCO 101/MCO 102
MI38C402 - VLT
®
is a registered Danfoss trademark
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