HEIDENHAIN NPD 281 v.3 - Manual (Page 36)

36
Switching Inputs and Outputs EXT (X41)
B UCE
E
C
Pin 1.10 0 V
+ UB ≤ 32 V
I ≤ 100 mA
t
min
≥
22 ms
0V
E
0V
E
t
min
Inputs
Input signals
Internal pull-up resistor 1 k
Ω
, active with low level
Trigger by making contact against 0 V or
by low level signal over TTL logic device
Delay for set/zero reset: t
d
≤
2 ms
Minimum pulse duration for all signals: t
min
≥
22 ms
The duration of t
min
is prolonged if functions are
active (for example, series of measurements with
DIFF value display).
Signal level of inputs
Status Level
High + 3.9 V
≤
U
≤
+ 15 V
Low – 0.5 V
≤
U
≤
+ 0.9 V; I
≤
6 mA
Outputs
Output signals
Open collector outputs, active with low level
Delay until signal output: t
d
≤
22 ms
Signal duration of zero signal, trigger limit A1, A2: t
0
≥
180 ms
The duration of t
d
is prolonged if functions are
active (for example, series of measurements with
DIFF value display).
Signal level of outputs
Status Level
High U
≤
+ 32 V; I
≤
10 µA
Low U
≤
+ 0.4 V; I
≤
100 mA