Minimum
Typical
Maximum
Transmission speed (selectable)
9,600 Baud
19,200 Baud
38,400 Baud
115.2 kBaud
125 kBaud
230.4 kBaud
250 kBaud
460.8 kBaud
500 kBaud
Cable length for 500 kBaud and 0.25 mm²
cables
100 m
Galvanic separation
S300 Medium Range
Yes
S300 Long Range
No
Differential output voltage at the sender
(between TxD+ and TxD–) with 50 Ω load
± 2 V
± 5 V
Differential input threshold at the receiver
(between RxD+ and RxD–)
± 0.2 V
Short-circuit current at TxD+, TxD–
–250 mA
250 mA
Maximum voltage level at TxD+, TxD–
–30 V
30 V
Maximum voltage level at RxD+, RxD–
–30 V
30 V
Terminator
115 Ω
120 Ω
125 Ω
Cable type to be connected
Twisted pairs with copper braid screen
Impedance of the cable to be connected
80 Ω
100 Ω
115 Ω
Wire cross-section of the cable to be connected
0.25 mm²
Safe SICK device communication via EFI/SDL
Cable length for 500 kBaud and 0.22 mm²
cables
50 m
Galvanic separation
S300 Medium Range
Yes
S300 Long Range
No
Cable type to be connected
Twisted pairs with copper braid screen
Impedance of the cable to be connected
108 Ω
120 Ω
132 Ω
Wire cross-section of the cable to be connected
0.22 mm²
1)
Operation only in a short-circuit protected system with max. 8 A.
2)
To meet the requirements of the relevant product standards (e.g., IEC 61496-1), the external voltage sup‐
ply for the devices (SELV) must be able to bridge a brief mains failure of 20 ms. Power supply units
according to EN 60204-1 fulfill this prerequisite. Suitable power supply units are available as accessories
from SICK.
3)
The absolute voltage level must not drop below the specified minimum voltage.
4)
The load currents for the input capacitors are not taken into account.
5)
With a typical supply voltage of 24 V.
6)
Ferrules are not needed.
7)
Ferrules are not needed.
8)
Applies to the voltage range between U
s
and 0 V.
9)
Switching currents up to 500 mA are allowed briefly (≤ 100 ms).
10)
In the case of a fault (0 V cable open circuit), no more than the specified leakage current flows in the
OSSD cable. The downstream control element must detect this state as LOW. An FSPLC (fail-safe pro‐
grammable logic controller) must detect this state.
11)
Make sure to limit the individual conductor resistances to the downstream controller to this value to
ensure that a cross-circuit between the outputs is safely detected. (Also note EN 60204-1.)
12)
When active, the outputs are tested cyclically (brief LOW). When selecting the downstream controllers,
make sure that the test pulses do not result in deactivation.
TECHNICAL DATA
12
8010948/ZA21/2020-06-18 | SICK
O P E R A T I N G I N S T R U C T I O N S | S300
127
Subject to change without notice
