HEIDENHAIN ND 287 User Manual - Manual (Page 68)

68
II Installation, specifications
II – 1 Installation and electr
ical connection
Preventative maintenance or repair
No special preventative maintenance is necessary. For cleaning, wipe
lightly with a dry lint-free cloth.
Connecting the encoders
The ND 287 operates with the following encoders:
 Incremental encoders with sinusoidal output signals (11 µApp or
1 Vpp interface)
 Absolute encoders with a bidirectional EnDat interface (purely serial;
when an EnDat 2.1 interface is used, the resolution is limited,
because the incremental signals are ignored.)
 Optional: Analog sensor with ±10 V interface
The slots for the encoder input assemblies on the rear panel are
designated X1 and X2.
D-sub connection X1/X2 (15-pin, female) for the following input
signals
Danger of electrical shock!
 The position display unit must be repaired by qualified
and authorized service technicians.
 See the last page of the Operating Instructions for our
service department's contact data.
Fig. II.5 Connections
X1 X32/X31
Danger of electrical shock!
The interfaces X1 and (optionally) X2 comply with the
requirements of EN 50 178 for low voltage electrical
separation
.
Do not engage or disengage any connecting elements
while the unit is under power!
Input signal
Maximum
cable length Maximum input
frequency
11 µApp 30 m 100 kHz
1 Vpp 60 m 500 kHz
EnDat 100 m -