Function Block; Functionality; Signals; Settings - ABB Relion SMU615 Technical Manual

Section 7
Measurement functions
7.1.7.2
7.1.7.3
7.1.7.4
7.1.7.5
Table 229: FMMXU Non group settings (Basic)
Parameter
Operation
F high high limit
F high limit
F low limit
F low low limit
F deadband
190

Function block

GUID-5CCF8F8C-E1F4-421B-8BE9-C0620F7446A7 V2 EN
Figure 124: Function block

Functionality

The frequency measurement range is 35...75 Hz. The measured frequencies outside
the measurement range are considered to be out of range and the minimum and
maximum values are then shown in parentheses.
When Frequency adaptivity is enabled, the measurement range is extended to 10...75
Hz in a 50 Hz network and 12...90 Hz in a 60 Hz network. The measured frequencies
outside 35...75 Hz are shown in parentheses.
When the frequencies cannot be measured, for example, due to too low voltage
amplitude, the default value for frequency measurement can be selected with the Def
frequency Sel setting parameter. In the "Nominal" mode the frequency is set to 50 Hz
(or 60 Hz) and in "Zero" mode the frequency is set to zero and shown in parentheses.

Signals

Table 228: FMMXU Input signals
Name
F

Settings

Values (Range) Unit
1=on
5=off
35.00...75.00 Hz
35.00...75.00 Hz
35.00...75.00 Hz
35.00...75.00 Hz
100...100000
Type Default Description
SIGNAL - Measured system frequency
Step Default
1=on
1 60.00
1 55.00
1 45.00
1 40.00
1 1000
1MRS758407 B
Description
Operation Off / On
High alarm frequency limit
High warning frequency limit
Low warning frequency limit
Low alarm frequency limit
Deadband configuration value for integral
calculation (percentage of difference
between min and max as 0,001 % s)
Technical Manual
SMU615