HEIDENHAIN PWM 20 - Manual (Page 21)

PWM 20 Operating Instructions en
23
4.1 Product overview
Front panel
See "A" on the front fold-out page.
X1
15-pin D-sub input for HEIDENHAIN en-
coders with
11 µA
PP
/25 µA
PP
interface
1 V
PP
/3 V
PP
interface
(1 V
PP
/Z1, 1 V
PP
with limit positions,
1 V
PP
with clock/data)
EnDat/SSI interface
TTL interface with limit positions
HTL interface (connection only for ser-
vice purposes via external adapter,
e.g. ID 1093210-01)
Fanuc, Mitsubishi, Yaskawa, or Panasonic
interface
X2
15-pin D-sub output for feed-through mode
of the encoder signals from X1
X3 6-pin mini-DIN connection for external func-
tions
X4 8+2-pin RJ-45 connection for encoders with
a DRIVE-CLiQ interface
L1
Status display for operating readiness
Off: Not ready
On (green): Ready
L2 Status display for encoder supply
Off: Encoder supply switched off
On (green): Encoder supply switched on
Rear panel
See "B" on the front fold-out page.
1 Power switch
X5
USB Type B socket (USB 2.0), data interface
X6
Power connection
4.2 Connecting the line voltage
WARNING
Risk of electric shock!
Improper grounding of electrical devices involves a risk of
serious injury or death by electric shock.
Always use 3-wire power cables.
Make sure the ground wire is correctly connected to
the ground of the building's electrical installations.
WARNING
Fire hazard from the use of power cables that do not
meet the minimum requirements!
Use only power cables that fulfill or exceed the
specified minimum requirements.
Use the supplied power cable to connect the power
connection X6 to a 3-wire grounded power outlet.
For information about the location of the power connection
on the rear panel, see "Rear panel", page 23.
For signal assignment of the power connection X6, see "R".
4.3 Electrostatic discharge
NOTICE
This product contains components
that can be destroyed by electro-
static discharge (ESD).
It is essential to observe the safety
precautions for handling ESD-sensiti-
ve components.
Never touch connector pins without
ensuring proper grounding.