Siemens SIMATIC EMS400S PSB-S Operating Instructions Manual page 58

Technical specifications
10.2 Technical specifications
SYNC input
Parameter
Number of inputs
Type
Rated voltage
Continuous voltage, permitted
Surge voltage
Signal logical 1
Signal logical 0
Increase of the synchronization signal
Filter time
Synchronization signal t
Electrical isolation, "field to logic"
Electrical isolation to the 48 V DC input
Cable length
Interface via RAIL
Parameter
Number of outputs
Type
Transmitter and receiver, internal operating voltage
Data transmission rate, rated value
Transmission frequency
Polarity reversal protection between RAIL 1 to 3
Polarity reversal
RAIL A of PSB-S module n with RAIL B of PSB-S
module n+1, and
RAIL B of the PSB-S module n with RAIL A of PSB-S
module n+1
PSB-C modules per RAIL, rated
Cable length
Insulation strength
The insulation strength of circuits with rated V
type test at the following test voltages to IEC 61131-2.
58
SYNC
Value
1
Current sinking, IEC type 1
24 V DC
DC ≤ 30 V
35 V DC for 0.5 s
DC ≥ 15 V at 5 mA
DC ≤ 5 V at 1 mA
≥ 24 V/µs
None
200 to 999 ms
500 V DC for 1 minute
1.9 kV DC for 1 minute
500 m, shielded
•
300 m, unshielded
•
Value
3
Differential transmission
48 V AC, potential connected to P48V
Each rated value corresponds to 1 data word
including the data subframe per
synchronization signal.
≤ 5 data subframes, depending on the
synchronization signal
Yes
No
30
1000 m, unshielded
to other circuits or ground was proven in a
in
Operating Instructions, 03/2014, A5E03474166-03
PSB modules