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MOTOR CONTROL AND PROTECTION UNIT M10X USER GUIDE
Terminal block Terminal number Designation… plug/contacts Remarks
X1 24VDC type X1:1…X1:14 Digital input Cross section 1.5mm
2
X1:15…X1:16 PTC input
X1 110/240VAC type X1:1…X1:10 Digital input Cross section 2.5mm
2
X1:11…X1:12 PTC input
X2 X2:1…6 Interface for MDx Cable with RJ11
connector provided
X3 X3:1…5 Fieldbus for external
communication
Cross section 2.5mm
2
X3:6,7 RCT input
X3:8…13 Voltage input
X4 X4:1…9 Relay output Cross section 2.5mm
2
X4:10,11 Power supply
X4:12 Ground
L1-T1; L2-T2; L3-T3 Lead-through Current measurement 110mm Window
—
Terminal designations
Regardless of different types of M10x product, the
definition of the terminal blocks on each type of
M10x remain the same. Depends on the selected
type, the quantities of the available terminal num-
bers may be different.
Integrated L-T Current Measurement
Current measurement in M10x is via the inte-
grated current transformer which comes with
one size measuring from 80mA to 63A. Exter-
nal interposing CT shall be used for measuring
from 63~6300A.
To ensure the correct current reading, wiring
of three phases should follow the same direc-
tion, i.e. either L-T or T-L.
In single phase application, current measure-
ment is based on Phase A or L1. The wiring has
to follow L-T direction only.
Current measurement is illustrated in the typi-
cal diagram Fig (13)
Wiring Tip:
In the application that motor current is less
than 500mA, it is essential to increase the
wiring turns on CT primary to avoid possi-
ble nuisance reading, also known as ghost
current. M10x supports up to 5 turns wiring
through parameter configuration.
The parameters are explained in 'M10x pa-
rameters description ' manual.
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