Parameter Group 25-** Cascade Controller - Danfoss VLT Flow Drive FC 111 Programming Manual

VLT® Flow Drive FC 111
Programming Guide
Programmable in 1 s increments. Once the bypass function is activated in accordance with the setting in parameter 24-10 Drive By-
pass Function, the bypass delay timer begins to operate. If the drive has been set for several restart attempts, the timer continues to
run while the drive tries to restart. If the motor has restarted within the time period of the bypass delay timer, the timer is reset.
If the motor fails to restart at the end of the bypass delay time, the drive bypass relay, which has been programmed for bypass in
parameter 5-40 Function Relay, is activated.
Where no restart attempts are programmed, the timer runs for the delay period set in this parameter and then activates the drive
bypass relay, which has been programmed for bypass in parameter 5-40 Function Relay.
Table 434: Range:
Min: 0 s

4.19 Parameter Group 25-** Cascade Controller

Parameter group for configuring the cascade controller for staging multiple pumps, fans, or compressors.
4.19.1 25-0* System Settings
Parameters related to the control principles and configuration of the system.
25-00 Cascade Controller
Default value: [0] Disabled
Conversion index: -
Enable or disable the cascade controller which is used for staging multiple pumps.
Table 435: Option:
[0]
[1]
25-04 Pump Cycling
Default value: [0] Disabled
Conversion index: -
Choose the method for determining the order of cutting in/out the fixed-speed pumps.
Table 436: Option:
[0]
[1]
25-05 Fixed Lead Pump
Default value: [1] Yes
Conversion index: -
Choose if the lead pump is fixed (Yes) or can be cycled (No).
Table 437: Option:
[0]
[1]
25-06 Number of Pumps
Default value: 2
Conversion index: 0
Danfoss A/S © 2021.07
Max: 600 s
Parameter type: Option
Data type: u_int8
Disabled
Enabled
Parameter type: Option
Data type: u_int8
Disabled
Enabled
Parameter type: Option
Data type: u_int8
Parameter type: Range
Data type: u_int8
Default value: 0 s
2-setup: 1 setup
Change during operation: False
2-setup: All setups
Change during operation: True
2-setup: 1 setup
Change during operation: False
No
Yes
2-setup: 1 setup
Change during operation: False
Parameters
AU363928304090en-000101 / 130R0982 | 183