Leuze electronic MSI 400 Operating Instructions Manual page 83

Line resistance
Safety outputs
MSI 410: Q1 ... Q4 / MSI 420/430: Q1 to Q4, IQ1 - IQ4
Number of outputs
• MSI 410:
• MSI 420/430
Type of output
Output voltage HIGH
Output current HIGH
Max. overload current/duration
Total current I
tot
T ≤ 45°C
U
T ≤ 55 °C
U
T ≤ 65 °C
U
Output test, can be deactivated
3,4,5
Test pulse width
Test pulse rate
Leakage current LOW
Load capacity
Line resistance
Maximum permissible coil energy
without external protection ele-
8
ments
Response time
1
For detailed information regarding the safety configuration of your machine/system, please contact the
Leuze electronic branch in charge of your area.
2
Do not connect any other safe inputs in parallel when the reverse current could lead to a HIGH state at the
other input.
3
When activated; in that case, the outputs are tested regularly (brief LOW switching). When selecting the
downstream control elements, make sure that the test pulses will not cause switch-off with the previously
listed parameters or deactivate the test pulses at the outputs.
4
When safety outputs are being used without test pulses, then either all of the safety outputs without test
pulses must be switched off at least once a year simultaneously for at least one second or the MSI 400
system must be restarted by switching off the supply voltage.
5
If safety outputs are being used without test pulses:
Use shielded or separate cabling for safety outputs without output tests because short-circuits to 24 V will
not be immediately detected.
6
In the event of a fault (interruption in the 0 V line), the maximum of the leakage current will flow in the
OSSD line. The downstream control element must determine this state as being LOW. An FPLC (Failsafe
Programmable Logic Controller) must be able to detect this state.
7
Limit the line resistance of the individual lines to the downstream control element to this value in order to
ensure that a short-circuit will be reliably detected between the outputs. (Also see EN 60204, Safety of ma-
chinery - Electrical equipment of machines - Part 1: General requirements.)
8
Examples of the resulting maximum coil inductivity:
1000 mH @ 0.5 A, 250 mH @ 1 A, 62.5 mH @ 2 A
Leuze electronic
MSI 410 / MSI 420/430
< 100 Ω
4
8 (4 fixed and 4 selectable outputs)
High-side MOSFET, short-circuit-proof and cur-
rent-monitored
U
Qn
≤ 4.0 A
≤ 12 A / 8 ms
Per output pair (Q1/2, Q3/4, IQ1/2, IQ3/4)
≤ 4.0 A
≤ 2.5 A
≤ 1.6 A
≤ 450 µs
10 Hz
6
< 0.1 mA
0.5 µF
7
< 200 Ω
< 0.125 J
Depends on logic setup
(Details: System response times [chapter 12.1])
≥ U - 0.6 V
Bx
MSI 400
Technical data
83