GV47001b_e.doc / Feb-08
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3.
Input Settings by DIL Switch
Positions 1 – 6 of the DIL switch serve to set the desired input levels. This setting can be done
for each of the input terminals individually.
Switch #
1
2
3
4
5
6
7
8
Input line
A
/A
B
/B
Z
/Z
GND
VCC
OFF: Associated input line requires HTL level (10 – 30 volts)
ON: Associated input line requires RS422 characteristics (2 – 7 volts)
Positions 7 and 8 allow to switch the potential separation off, when the internal auxiliary
voltage of 5,3 volts should be used to supply the input encoder from terminals 1 and 2 of the
input connector.
OFF: potential separation is active, no aux. output voltage is available on the terminals
ON: potential separation is switched off, aux output voltage for encoder supply is available
•
When switch positions 1 – 6 are ON (RS422 setting), the corresponding input must
not receive levels >7 volts. At the same time it is necessary to apply also the
inverted signal, since the input will only accept differential signals.
•
When a switch is set to OFF, the dedicated input will accept differential signals at a
level from 10 to 30 volts (inverted and non-inverted inputs), but also single-ended
signals at a level from 15 to 30 volts (inputs A, B, Z only, inverted inputs remain
unconnected)
•
You should set the switch positions to ON or to OFF pair wise
(i.e. 1 with 2, 3 with 4, 5 with 6)
!
