gefran SIEIDrive E-ABS, Инструкция по эксплуатации

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E-ABS
14
3.2 First Encoder Connection
The first encoder is connected to the E-ABS card via two connections: an external and an
internal one. The external interface is formed by the 1...5 terminals of the application card.
These terminals are afterwards connected to the X1 connector, which acts as the external
interface towards the E-ABS card. The encoder connection cable has to be a low capacitance
shielded cable (<50pF/m) suitable for the 485/422 lines.
The following table describes the connections referring to the first encoder .
Terminal 1 2 3 4 5 6 7
Signal CLK- CLK+
(
1
)
DTA- DTA+ Ground 0V
Description Clock - Clock +
Possible
equipotentiality(
1
)
Datum - Datum +
(
1
) (
1
)
Connector
PIN
1 2 3 4
Signal
DTA+ DTA- CLK+ CLK-
Description
Datum + Datum- Clock+ Clock-
teabs01g
X1 (internal connection between the application card and the E-ABS)
Terminals (application card)
( 1 ) The terminal number 3 of the application card is connected to the ground and to 0V through a 1 M
Ω
resistance
and a 2.2nF500V capacitor. The connection between the ground and 0V (terminals 6 and 7) is performed by
using a track.
The equipotentiality is used if the encoder power supply does not come from the drive XE
connector. It has to be performed in order to avoid that the power supply reference potential
exceeds the maximum value allowed by the drivers type 485 on the E-ABS card and on the
encoder. The equipotentiality can be obtained by connecting a 100...200
Ω
resistance between
the terminals 3 and 7 and the 0V of the encoder power supply to the terminal 3.
The braided wire of the shielded cable has to be connected to different points according to the
encoder connection modes and according to possible noises induced on the wirings.
If the cable braided wire on the encoder side is ground connected, it is necessary to connect it
to the terminal 3 in order not to create any loop (if through some tests it has not been stated that
the braided wire connection to the terminal 6 can cancel any noise effect).
If the cable braided wire on the encoder side is not ground connected, it is preferable to connect
it to the terminal 6.
Refer to the example diagrams in chapter 8, Use Examples.
3.3 Second Encoder Connection
The second encoder is available from the hardware revision E. It is connected to the E-ABS
card via two connections: an external and an internal one. The external interface is formed by
the 9-female pole D-sub connector of a wire placed in a kit supplied on request. The other wire
end terminates with a 6-pole connector connected to the X3 connector of the E-ABS card (this
is the internal interface). The encoder connection cable has to be a low capacitance shielded
cable (<50pF/m) suitable for the 485/422 lines.
The following table describes the connections referring to the second encoder.