User Manual

Sv210_01b_oi_e.doc / Apr-16 Page 9 / 11
3.4. The Incremental Outputs (X2 und X4)
On the terminal strips X2 and X4 the encoder information is available with a differential square
wave format. All incremental outputs use push-pull drivers. When position 2 (Com+) of the
corresponding terminal strip is unconnected, the output level is automatically adapted to
TTL / RS422 format.
As soon as terminal position 2 receives any external voltage > 5,5 V / < 30 V, automatically this
voltage will determine the output swing. Consequently each of the two incremental outputs can
operate with its own specific TTL or HTL level.
1 2 3 4 5 6 7 8 9
GND
+5,2 V (Vcc int.)
GND
A
/A
B
/B
Z
/ZCom+GND
(Screen)
Sub-D-9
X2 / X4
X3
 Positions 9 of the terminal strips X2 and X4 are in each case galvanically connected
to the metal housing of the adjacent SUB-D connector (located on the same side of
the housing).
 It is recommendable to connect the cable shield directly to the metal housing of the
associated counterpart connector, and to wire terminal position 9 to earth or ground
potential. This ensures that the cable shield is earthed / grounded correctly.
4. Front LEDs
 The green LED is lit whenever the power supply of the unit is on.
 The yellow Led indicates the presence of encoder input signals. With slow motion, the
LED will blink with every input impulse. With higher speeds the blinking will pass over
into a continuous glowing with reduced brightness.