L1, L2, L3
3
K1
k1
DOC DO0 DO1
DO2
24 V DC
10 11
5
7
8
9
13 14 15 16 17 18
DI0 DI1 DI2 DI3 DI4 DI5
UMC
UMC-
PAN
Fieldbus
Plug
0 V
Fwd Stop
M
3
7
CE M11- FB P. X X X E A RTH LE A K AG E MON ITOR
M A N UA L
By nature, earth fault sensors encounter all kind of disturbances inserted through the motor feeding lines.
Therefore the evaluating unit should foresee some kind of filtering to suppress erroneous activations of the
output due to disturbances.
When using the CEM11 with a PLC a filter should be used in the PLC program. The PLC is responsible to switch
off the motor in case of an earth fault.
CEM11-FBP.xxx is connected to a multifunction input (DI0, DI1, DI2) of UMC100.3. This input can be
configured then for fault or warning, working always or after the motor startup time. It is recommended to
select after startup time to avoid a tripping during the motor start phase. Additionally a filter time can be
configured for this input to ignore short disturbances.
—
01
CEM11 Connection to a UMC
Terminals
1 24 V DC supply
2 Signal output
Connector
Supply
(e. g. 230 V AC)
Through-hole diameter:
20 / 35 / 60 / 120 mm
Adjustment of the current
threshold:
Type 1 - 80 to 1700 mA
Type 2 - 100 to 3400 mA
Type 3 - 120 to 6800 mA
Type 4 - 240 to 13600 mA
CEM11 - Earth
Leakage Monitor
(with current trans-
former), 4 types
The following figure shows the application of CEM11 together with UMC100.3. The CEM11 is supplied with 24 V. The output
from CEM11 is connected to digital input DI2 of UMC100.3. The UMC100.3 can be configured to generate a warning or
optionally a trip in case of an earth fault. See the technical description of UMC100.3 for further description on how to set the
parameters accordingly.
—
Connection to UMC100.3 / PLC
