Connecting an absolute encoder with parallel outputs
(Original Document)
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Introduction
An absolute encoder with parallel outputs must always be connected to the module using a TELEFAST ABE-7CPA11 base. The signals sent to the module are RS 422 standard SSI serial signals. The encoder supply is 10…30 VDC or 5 VDC depending on the encoder type.
Diagram showing the principle of connecting an absolute encoder with parallel outputs on a 10…30 VDC supply
The diagram below represents the connection string of an absolute encoder with parallel outputs on a 10…30 VDC supply.
Diagram showing the principle of connecting an absolute encoder with parallel outputs on a 5 VDC supply
The diagram below represents the connection string of an absolute encoder with parallel outputs on a 5 VDC supply.
Functions of the TELEFAST screw terminal block
The TELEFAST base has two terminal blocks:
One located on the upper part, comprising four terminals and used to connect the supply source to the encoder,
Terminals on the screw terminal blocks
Signals
Functions
+
-
+ inputs, source of encoder supply
-
-
- inputs, source of encoder supply
Two terminal blocks comprising 36 terminals are located on the lower part. These are used to connect all signals travelling to or from the encoder.
Terminals on the screw terminal blocks
Signals
Functions
GND
-
Connection to TELEFAST protective ground. Ensures the continuity of the ground connection between the encoder and the module
+10..30 V
-
Connecting the + encoder supply for an encoder using a 10…30 VDC supply
+5 V
-
Connecting the + encoder supply for an encoder using a 5 VDC supply
0 V
-
Connecting the - encoder supply
1 to 24
In0 to In24
Parallel outputs of the encoder
25
ERR
Default output of the encoder
29
+ EPSR
+ return supply of the encoder. If there is no return encoder supply, connect the terminal to the +10…30 V or +5 V terminal according to the encoder supply
30
- EPSR
- return supply of the encoder. - return supply of the encoder. If there is no return encoder supply, connect the terminal to the 0 V terminal