03/12 EM-ABS-01 for ACU 27
5.3.3.2 Looping via terminals X410A
In some cases, encoder power supply must be supported or effected by an external
power supply. This is a good idea especially in the case of encoders with medium
power demand (0.5…2 W) or when many consumers are connected to the signal ter-
minals.
n external DC 24 V power supply can be connected to terminals X410A.1 (DC 24 V)
and X410A.2 (ground). Via this power supply, a connected encoder can be powered.
BONFIGLIOLI VECTRON recommends connecting an external power supply.
Requirements to be met by external power supply
Input voltage range DC 24 V ±10%
Rated input current Max. DC 1.0 A (typical DC 0.45 A),
Peak inrush current Typically: < DC 20 A
External fuse Standard fuse elements for rated current, characteristic:
slow
Safety Safety extra low voltage (SELV) according to EN 61800-
5-1
Note: Connect the power supply for the encoder to terminals X410A.1 and
X410A.2. Connection via the terminals of the basic device ACU (X210A.1
and X210A.2) is not sufficient for powering the EM-ABS-01 module and the
encoder.
Caution! If the encoder is powered via X410A, 2 W power are available to the en-
coder interface. Another 2 W are available to the interfaces (di
ital/analo
inputs/outputs) of the basic device.
Caution! The inputs for the external power supply can withstand external volta
e up
to DC 30 V. Avoid hi
her volta
e levels. Hi
her volta
es may destroy the
module.
Caution! Some encoders (e.g. laser distance meters) need more power than possi-
ble with the power supply described here. If the encoder requires a power
level higher than 2 W or more than DC 12 V, it must be connected to an
external power supply directly
. Non-fulfillment of this requirement may
result in dangerous plant states.
Set parameter Power supply 1186 to either “2 - via X410A” or “6 via X410A, sense”.
See chapter 8.4.3 “Power supply”.
The voltage level can be
set up via parameter
Supply voltage 1187. See chapter
8.4.4 “Supply voltage”.
The encoder can be powered as follows:
− via control terminals X410A.5 (DC 5 … 12 V) and X410A.7 (GND) or
−
via contacts X412.6 (V
Enc
) and X412.15 (GND) of the female HD-Sub-D connector.
See chapter 5.3.2 "Control terminals".
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