15
Magtrol Load Monitoring Units LMU 212 & 217
Chapter 2 – Installation / Configuration
2.4.4.1
Detection chain for relay 1 (REL1)
Figure 2–11
indicates the location of the SWA micro-switches on the load monitoring unit board.
1 2 3
4 5 6
7 8
OFF
ON
9 10
Micro-interrupteurs
SWA
Fig. 2–8 Location of the SWA micro-switches
The following table allows the user to select the energising mode and the hysteresis value for the
relay REL1.
Condition
Configuration
effect
sWa4 sWa5 sWa6
REL1 de-energised for
F < F
level1
ON
OFF
—
Detection for U
O/P
< U
level1
¶
REL1 de-energised for
F > F
level1
OFF
ON
—
Detection for U
O/P
> U
level1
¶
Hysteresis < 0.5%
—
—
OFF
Hysteresis < 50 mV measured on U
O/P
Hysteresis
≈
5% (FSD)
—
—
ON
Hysteresis
≈
500 mV measured on U
O/P
note :
Record the value F
level1
and the configuration of the micro-switches
SWA4, SWA5 and SWA6 on the configuration and calibration form
(see
Appendix A
).
This table allows the user to select the configuration of the micro-switches according to the state
of the relay REL1.
