Application planning
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
35
Examples of suitable I/O modules for BU types
BU type
(BU..B, dark-colored
BaseUnit)
F-CM AS-i Safety ST
• 6ES7...
• Up to 30 V DC
• 20 mm wide
F-CM AS-i Safety ST
(3RK7136-6SC00-0B
)
BU20-P6+A2+4B
(6ES7193-6BP20-0B
)
BU type
AI Energy Meter
• 6ES7...
• Up to 400 V AC/
480 V AC
• 20 mm wide
AI Energy Meter 480VAC
ST
(6ES7134-6PA20-0B
)
BU20-P12+A0+0B
(6ES7193-6BP00-0B
)
BU type
F-
RQ 1×24VDC/24..230
VAC/5A
• 6ES7...
• Up to 230 V AC
• 20 mm wide
F-
RQ 1×24VDC/24..230VA
C/5A
(6ES7136-6RA00-0B
)
BU20-P8+A4+0B
(6E7193-6BP20-0B
)
BU type
DQ 4×24...230VAC/2
A HF
• 6ES7...
• Up to
400 V AC/480 V A
C
• 20 mm wide
DQ 4×24...230VAC/2A HF
(6ES7132-6FD00-0C
)
BU20-P16+A0+2D
(6E7193-6BP00-0B
)
* For compensation of the reference junction temperature for thermocouples. BU type A1 is required if
you measure the reference junction temperature with an internal temperature sensor or if you need
the additional 2×5 terminals.
If you use the internal reference junction temperature with BU type A1, ensure an even tempera-
ture distribution at the terminals. The specified accuracy of the utilized analog module is then ad-
hered to. If necessary, you can increase the accuracy via user calibration.
ules
temperature measurement can also be plugged into BU type A0.