HEIDENHAIN EIB 8000 Betriebsanleitung Seite 28

Connections
Encoders with 1 V interface are connected to the
PP
encoder inputs X111, X112, X211, X212, X311, X312, X411
and X412 provided on the front panel of the product.
For information on the location of the connections, see
"Front panel", Page 28.
For more information on the connections, see
"Specifications", Page 36.
Information on the pin layouts:
Cable shield connected to housing.
Sensor: The sensor line is connected internally
with the corresponding power line.
1 V interface
PP
Pin Function
1, 2, 3, 4, 5, 6, 7 , Incremental signals
8, 11, 12, 13, 14,
15, 16, 17 , 18,
19, 20, 21
9, 10, 22, 23 Voltage supply
12 Additional homing signals
13 Additional limit signals
For 1 V pin layout, see "G", Page 152.
PP
Connecting the encoder cables
Connect the encoder cables tightly to the respective
connections
If the cable connectors include mounting screws, do
not overtighten them
4.5 Wiring of trigger inputs and outputs
Depending on the peripherals to be
connected, the connection work may need to
be carried out by an electrical specialist.
Example: Safety Extra Low Voltage (SELV)
exceeded
Further information:
Page 25
NOTICE
Danger of damage to the product and the connected
devices caused by overvoltage!
Do not engage or disengage the trigger lines while
under power
Check the trigger connections for correct wiring
The wiring of the trigger inputs and trigger
outputs depends on the customer's
peripherals. For more information, see
manufacturer's documentation.
30
"Personnel qualification",
Trigger input and output on the rear of the product
The GND pins of connections TRIGGER IN and TRIGGER
OUT are connected to GND in the product and with the
encoder connections.
A trigger is triggered upon each edge from LOW to HIGH.
Assignment of the differential signals:
U : Low to High
Trigger,In+
U : High to Low
Trigger,In–
Recommendation
The external trigger source should address the product via
differential signals. If the application requires single-ended
signals for triggering, the sensitivity to noise increases
because the EMC Directives according to which the
product has been tested are not complied with.
In this case, we recommend using 5 V TTL signals for
addressing the product and wiring the differential signals
as follows:
Do not wire the vacant input and switch off the
terminating resistor
Use U for triggering upon rising edge
Trigger,In+
Use U for triggering upon falling edge
Trigger,In–
External trigger input TRIGGER IN
Four independent differential inputs for the triggering of
trigger events are supported.
A 120 Ω terminating resistor can be connected.
For pin layout according to RS-485, see "P", Page 154.
External trigger output TRIGGER OUT
Four independent differential outputs with individual
assignment to internal trigger sources of the product are
supported.
For pin layout according to RS-485, see "Q", Page 155.
Trigger inputs on the front of the product
Eight differential inputs for saving measurement results
are supported. For information on the location of the
trigger input, see "Front panel", Page 28.
For pin layout according to RS485, see "H", Page 152.
4.6 Connecting the synchronization
input and output for high-precision
timing requirements
In addition to the trigger inputs and outputs (see
Page 30), synchronization inputs and outputs are
available for high-precision synchronization of trigger
events. For this, a CLK signal (typically 10 MHz) uses a
PTM (position trigger marker) to mark a defined edge that
then initiates the trigger event. The CLK (also referred
to as SyncClk) and PTM signals can be connected to
differential or single-ended inputs and outputs:
Differential SYNC inputs and outputs
For SYNC.IN pin layout, see "M", Page 153
For SYNC.OUT pin layout, see "N", Page 153
For pin layout for single-ended SYNC inputs and
outputs, see "R", Page 155
For information on the location of the connections, see
"Rear panel", Page 29.
HEIDENHAIN | EIB 8000 | 09/2018