Siemens SIMOCODE pro - Unbalance Protection

Parameters
4.1 Motor protection
SIMOCODE pro - Parameterize
48 Operating Manual, 04/2017, A5E40507630002A/RS-AA/001
4.1.3
Unbalance protection
Description
The extent of the phase unbalance can be monitored and transmitted to the control system.
A definable and delayable response can be triggered when an adjustable limit has been
overshot. If the phase unbalance is more than 50 %, the tripping time is also automatically
reduced in accordance with the overload characteristic since the heat generation of the
motors increases in asymmetrical conditions.
Phase balance formula
The phase unbalance is calculated using the following equation:
Level
The level of unbalance to which SIMOCODE pro should react is set here.
Level:
0 to 100 % (default: 40 %)
Response
Here you can choose the response of SIMOCODE pro in case of phase unbalance:
See also "Tables of responses of SIMOCODE pro" in Chapter Important information
(Page 7) and Table "Responses" in Chapter Motor protection functions (Page 31).
Delay
The unbalance level must be exceeded for the period of the set delay time before
SIMOCODE pro executes the desired response. If no setting is made, there will be no
response.
Setting range:
0
to 25.5 s (default: 0.5 s).