HEIDENHAIN ND 287 User Manual - Manual (Page 95)

ND 287
95
II – 3 S
w
itc
h
ing inputs and outputs
Switching outputs at D-sub connection X41
Output signals
Signal level of outputs
Danger to internal components!
 The power supply of external circuits must comply with
EN 50178 requirements for low voltage electrical
separation
.
 Connect inductive loads only with a quenching diode
parallel to the inductance
.
Danger to internal components!
Use only shielded cables and connect the shield to the
connector housing
.
Pin Function
14 Display value is zero
15 Measured value is greater than or equal to trigger limit A1
16 Measured value is greater than or equal to trigger limit A2
17 Measured value is less than the lower sorting limit
18 Measured value is greater than the upper sorting limit
19 Error (see "Error messages" on page 60)
Fig. II.60 Open-collector outputs
Signal Value
Open-collector outputs Active Low
Delay until signal output t
V
≤ 20 ms
Signal duration of zero
crossover, trigger limit A1, A2
t
0
≥ 180 ms
Status Level
High U ≤ +32 V; I ≤ 10 µA
Low U ≤ +0.4 V; I ≤ 100 mA