Connections; Readouts - Danfoss MCO 101 Manual

Extended and Advanced Cascade Controller
Option
27-58 Run Next Pump Delay
Range:
0.1 s* [0.1 s – 5 s]

6.1.10 Connections, 27-7*

Parameters for configuring relay connections.
27-70 Relay
Option:
Standard Relay
[0] Drive X Enable
Pump K to Drive N
Pump K to Line Power

6.1.11 Readouts, 27-9*

Cascade Control Option Readout Parameters
27-91 Cascade Reference
Cascade Reference is a readout parameter that shows the reference output for use with follower drives. This reference is available even when the master
drive is stopped. This is the speed at which the drive is operating or would be operating if it were on. It is scaled as a percentage of
Limit (P4-13[rpm] or P4-14[Hz]).
Units: %
Function:
Run Next Pump Delay is a delay between stopping the current lead pump and starting the next lead
pump when alternating lead pumps. This provides time for the contactors to switch while both
pumps are stopped.
Function:
P27-70 is an array parameter used to set up the relay option functions. Depending on which option
is installed, only the available relays will be visible. If the extended cascade controller is installed,
relay 10-12 will be visible. If the advanced cascade controller is installed, relay 13-20 will be visible.
If both options are installed, all relays will be visible. To set up the function of each relay, choose
the specific relays, and then choose the function. If the function option Standard Relay is chosen,
the relay can be used as general purpose relay, and the desired function can then be set up in
parameter P5-4*.
Enable follower drive X
Connect pump K to drive N
Connect pump K to line power
NOTE!
If the MCO 102 is installed, the relay option MCB 105 may also be available for
cascade control.
®
MI.38.C2.22 - VLT is a registered Danfoss trademark
6 How to Program
6
Motor Speed High
6-11