Operating instructions

Electrical installation
4.9 Other connections
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
107
Table 4- 47 Specification of measuring systems that can be connected
Parameter Designation Threshold
4)
Min. Max. Unit
High signal level
(TTL bipolar at X520 or X521/X531)
1)
U
Hdiff
2 5 V
Low signal level
(TTL bipolar at X520 or X521/X531)
1)
U
Ldiff
-5 -2 V
High 17 V
CC
V High signal level
(HTL unipolar)
U
H
4)
Low 10 V
CC
V
High 0 7 V Low signal level
(HTL unipolar)
U
L
4)
Low 0 2 V
High signal level
(HTL bipolar)
2)
U
Hdiff
3 V
CC
V
Low signal level
(HTL bipolar)
2)
U
Ldiff
-V
CC
-3 V
High signal level
(SSI bipolar at X520 or X521/X531)
1)
U
Hdiff
2 5 V
Low signal level
(SSI bipolar at X520 or X521/X531)
1)
U
Ldiff
-5 -2 V
Signal frequency f
S
- 300 kHz
Edge clearance t
min
100 - ns
Zero pulse inactive time
(before and after A=B=high)
t
Lo
500 (t
ALo-BHi
- t
Hi
)/2
3)
ns
Zero pulse active time
(while A=B=high and beyond)
t
Hi
500 t
ALo-BHi
- 2 x t
Lo
3)
ns
1)
Other signal levels according to the RS 422 standard.
2)
The absolute level of the individual signals varies between 0 V and V
CC
of the measuring
system.
3)
t
ALo-BHi
is not a specified value, but is the time between the falling edge of track A and the
next but one rising edge of track B.
4)
The threshold can be set via p0405.04 (switching threshold); the factory setting is "Low".