Interaction with the "Hibernation mode" function
In order that the "Cascade control" and "Hibernation mode" functions operate together without
any conflict, you must make the following settings in the cascade control:
● p2392 < p2373
The restart value of the hibernation mode (p2392) must be lower than the activation
threshold for the cascade control (p2373).
● p2373 < p2376
The activation threshold for cascade control (p2373) must be lower than the overload
threshold for the cascade control (p2376).
● It is not permissible that the main drive is in the hibernation mode.
● The actual speed must be higher than the restart speed for hibernation mode
(p1080 + p2390) × 1.05.
● The value for the activation delay of the cascade control (p2374) must be longer than the
ramp-up time from hibernation mode (t
y
).
t
y
= [(p1080 + p2390) × 1.05 × p1120 × p1139] / p1082
Setting parameters and activating the cascade control
Parameter Description
p2200 Technology controller enable (factory setting: 0)
1: Activate technology controller
p2251 Technology controller mode (factory setting: 0)
0: Technology controller as main speed setpoint
p2370 Cascade control enable (factory setting: 0)
1 signal: Cascade control is enabled
p2371 Cascade control configuration (factory setting: 0)
See also p2372 and the above table.
p2372 Cascade control - motor selection mode (factory setting: 0)
Specifying the motor connection sequence
0: Fixed procedure as set in p2371
1: Cascade control after absolute operating hours
2: Automatic replacement after completed operating hours
3: Automatic replacement after absolute operating hours
p2373 Cascade control - activation threshold (factory setting: 20%)
p2374 Cascade control - activation delay (factory setting: 30 s)
p2375 Cascade control - deactivation delay (factory setting: 30 s)
p2376 Cascade control - overload threshold (factory setting: 25%)
p2377 Cascade control - interlock time (factory setting: 0 s)
p2378 Cascade control - activation/deactivation speed (factory setting: 50 %)
Advanced commissioning
6.21 Cascade control
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE 291
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