BY12512d_e.doc / Mai-08
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7.1.
Power Supply
The BY 125 operates from an unstabilized 24 VDC supply (+/- 25%); however, the voltage
including ripple should not exceed the following limits (18 V...30 V). The supply of the BY 125 is
electrically protected against wrong polarity misconnection by protection diodes.
GND
+ 24VDC (Power supply)
GND
VCC out (+5,5V)
Trimm +
Trimm -
Index Master
Index Slave
Reset
Store EEProm
+ 24VDC
GND
GND
GND
Analogue GND
LV IN (Analogue Feed Forward)
GND
LV OUT
+ 24VDC
Com +
Ready
Alarm
OUT Sync
Index o. k.
Do not connect when you use digital feed forward
signal from the internal f/V converter
Fig 10
7.2.
Encoders
The unit only accepts 5V differential TTL signals or similar signals from an encoder simulation
of a drive. It is essential to connect the channels A, /A, B, /B at any time. The zero input
channels Z and /Z can be omitted, if not needed.
An auxiliary voltage of 5.5 V (max. 500 mA totally) is available on the connector plugs "Master"
and "Slave", for easy supply of the encoders. Both connectors on the unit are Sub-D-9 pin, male.
Where you find you are working with existing 10-30 Volt encoder signals that feature only A, B
and Z signals, the PU 202 converter should be used to gain full complementary signals in line
with RS422 standards. Against special order designation, BY125 units can also be delivered
with HTL encoder inputs: Option HTLIN1 provides inputs A, B, Z with 24V level (inverted
channels not connected) and option HTLIN2 provides all six channels including the inverted
ones with 24V level. With these options, the 24V power supply of the unit is connected to
master and slave encoder connectors to supply the encoders.
