Analog sensor (0 … 20 mA), external sensor power supply
Sensor power supply on channel 1
(I0)
External 24 V DC (Sensor)
SIL/Cat./PL
1), 2)
SIL 1/Cat.2/PL c
SIL
3)
SIL 1
3
2
A
1
9
0
8
F
7
6
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
AI581-S
UP 24VDC 2W
4SAI
Safety Analog Input
3.8 UP
3.9 ZP
3.4
3.7
3.0 I2-
3.1 FE
3.2 I3-
3.3 FE
3.5
3.6
ERR1
2.9ZP
2.8UP
2.3
2.4
2.5
2.1
2.7
2.6
2.2I1+
2.0I0+
ERR2
4.9ZP
Sensor
0 ... 20 mA
24VDC
GND
4.8UP
4.7
4.2I3+
4.0I2+
4.6
4.5
4.4
4.3
4.1
PWR
1.9ZP
1.8UP
1.7
1.4
1.0I0-
1.2I1-
1.3FE
1.1FE
1.5
1.6
ADDR
x10H
ADDR
x01H
Fig. 55: Circuit example AI581-S, analog sensor (0 … 20 mA)
1)
- MTTFd = High, DC = Low
2)
- Max. reachable (ISO 13849, IEC 62061, EN 954)
➔
without error exclusion (you can reach higher levels
up to PL e, SIL 3, Cat. 4 with error exclusion)
3)
- Max. reachable SIL acc. IEC 61508 (Type A components are required)
➔
without error exclusion (you
can reach higher levels up to SIL 3 with error exclusion)
AC500-S Safety Modules
AI581-S analog safety input module > Circuit examples
30.03.2017
AC500-S
145
