Configuration - Danfoss VLT Series Operating Instructions Manual

1 Extended and Advanced Cascade Controller
Option
[10] No Relay Connection
1
27-02 Manual Pump Control
Option:
[0] * No Operation
[1] Online
[2] Alternate On
[3] Offline-Off
[4] Offline-On
[5] Offline-Spin
27-03 Current Runtime Hours
Option:
Units: hrs
27-04 Pump Total Lifetime Hours
Range:
0* [0 - 2147483647]

1.8.3 Configuration, 27-1*

This parameter group is for configuring the cascade controller option.
27-10 Cascade Controller
Option:
Disabled
Master/Follower
Mixed Pumps
Basic Cascade Ctrl
27-11 Number of Drives
Range:
1* [1 - 8]
27-12 No. of Pumps
Range:
0* [0 - No. of Drives]
26
the pump is not directly connected to a drive, and no relay has been assigned to the pump
Function:
Manual Pump Control is a command parameter that allows manual control of individual pump states.
Selecting one of these will execute the command and then return to No Operation. Possible selec-
tions are:
Does nothing.
Makes the pump available to the cascade controller.
Forces the selected pump to be the lead pump.
Turns the pump off and makes the pump unavailable for cascading.
Turns the pump on and makes the pump unavailable for cascading.
Initiates a pump spin.
Function:
Current Runtime Hours is a readout parameter showing the total number of hours each pump has
been running since last reset. This time is used to balance the running hours between pumps. The
times may all be reset to 0 using parameter 27-91.
Function:
Pump Total Lifetime Hours is the total operating hours for each connected pump. This parameter
may be individually set to any value for maintenance purposes.
Function:
Cascade Controller Mode sets the operating mode. Possible selections are:
Turns off cascade controller option.
Operates using only variable speed pumps connected to Drives. This selection simplifies the setup.
Operates using both variable and fixed speed pumps.
Turns off the cascade option and reverts to basic cascade operation (See parameter group 25-**
in the VLT AQUA Drive Programming Guide
option can be used to extend the Basic Cascade with 3 relays. Only Basic Cascade functions are
available.
Function:
Number of frequency converters to be controlled by the cascade controller.
MCO 101: 1-6
MCO 102: 1-8
Function:
Number of Pumps to be controlled by the cascade controller.
MCO 101: 0-6
MCO 102: 0-8
®
MI.38.C3.02 - VLT is a registered Danfoss trademark
®
VLT Operating Instructions
for further information). The additional relays on the