Safety engineering – Lenze E94AYAE SM301 User Manual
Page 24
Safety engineering
Device modules
SM301 safety module
l
24
EDS94AYAE EN 7.0
1.2.3.4
Technical data
24 V supply
The module and the safe output must be supplied with 24 V from safely separated power
supply units. If electrical isolation is required, separate voltage supply lines must be used.
Detailed features of the 24−V supply
Terminal
Specification
[Unit]
min.
typ.
max.
+, −
Supply voltage of the module via a safely separated
power supply unit (SELV/PELV)
[V]
19,2
24
30
Input current
[mA]
350
24O, GO
Supply voltage of the safe output via a safely
separated power supply unit (SELV/PELV)
[V]
18
24
30
Input current
[mA]
1100
If the voltage of the SELV/PELV power supply unit can exceed 30 V in the event of an error,
provide for an external fuse (
¶ 1.1.8).
Inputs and output
The inputs and the output are isolated and designed for a low−voltage supply of 24 V DC.
The digital inputs are protected against polarity reversal.
Detailed features of the safe inputs and the safe output
Terminal
Specification
[Unit]
min.
typ.
max.
I1A, I1B
I2A, I2B
I3A, I3B
I4A, I4B
AIE, AIS
PLC input, IEC−61131−2, 24 V, type 1
Low signal input voltage
V
−3
0
5
Input current at low signal
mA
15
High signal input voltage
V
15
24
30
Input current at high signal
mA
2
15
Input capacitance
nF
3.5
Repetition rate of the test pulses
ms
50
AIE, AIS
Input delay (operating time)
s
0.3
10
CLA, CLB
PLC output, IEC−61131−2, 24 V DC, 50 mA
Low signal output voltage
V
0
0.8
High signal output voltage
V
17
24
30
Output current
mA
60
Cable capacity
nF
100
Cable resistance of a passive sensor
W
200
O1A, O1B
PLC output, IEC−61131−2, 24 V DC
Low signal output voltage
V
0
0.8
High signal output voltage
V
17
24
30
Output current
mA
500
Cable capacity
nF
100
Cable resistance
W
200
Tab. 1−1
Technical data
The chapter "Response times" must be observed as well (
¶ 1.8).