Siemens SIMATIC FM 453 Manual page 57

See Section 5.3.1 for further applications.
NL Input
The zero position signal of the drive power section can be connected for each
channel to a further input.
The zero position signal is specified in MD37 (see Section 5.3.1) and can be
one of the following (see Section 9.7):
READY2 Input The standby signal 2 (controller ready) of the drive power section can be con-
nected for each channel to a further input.
The message signal is specified in MD37 (see Section 5.3.1).
Note
The "READY2" input is configured as an isolated optical coupler input. See
Section 4.7 for details about wiring.
Table 4-12
Supply voltage
Electrical isolation
Input voltage
Input current
Input delay
Polarity-reversal protection for input
signals
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Current-sourcing pattern zero signal for reference point approach
Zero pulse, external (e.g. reference point switch signal) for reference
point approach
Electrical Parameters of NL and READY2 Digital Inputs
over input voltage range
for 24 V input voltage
Wiring the FM 453
24 V DC
(permissible range: 20.4...28.8 V)
Yes
0 signal: -3 ... 5 V
1 signal: 11 ... 30 V
0 signal: max. 3 mA
1 signal: max. 7 mA
1 signal: max. 15 µs
0
0 signal: max. 45 µs
1
1 signal: max. 8 µs
0
Yes
4-25