Extended Cascade Controller Mco 101 - Danfoss VLT Series Operating Instructions Manual

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VLT Operating Instructions
The difference between MCO 101 and MCO 102 is mainly the number of optional relays being made available for the FC. When MCO 102 is installed, the
relays option card MCB 105 may be mounted in the B-slot.
The Cascade Controller is capable of controlling a mix of variable speed and fixed speed pumps. Possible configurations are described in more detail in
the next section. For simplicity of description within this manual, Pressure and Flow will be used to describe the variable output of the set of pumps
controlled by the cascade controller.

1.3.1 Extended Cascade Controller MCO 101

The MCO 101 option includes 3 pieces of change-over contacts and can be fitted into option slot B.
Electrical Data:
Max terminal load (AC)
Max terminal load (DC)
Min terminal load (DC)
Max switching rate at rated load/min load
Illustration 1.2: Mounting of B-options
Warning Dual supply
NB!
The label MUST be placed on the LCP frame as shown (UL approved).
How to add the MCO 101 option:
• The power to the frequency converter must be disconnected.
• The power to the live part connections on relay terminals must be disconnected.
• Remove the LCP, the terminal cover and the cradle from the FC 202.
• Fit the MCO 101 option in slot B.
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MI.38.C3.02 - VLT is a registered Danfoss trademark
1 Extended and Advanced Cascade Controller
Option
1
240 V AC 2A
24 V DC 1 A
5 V 10 mA
6 min -1 /20 sec -1
7