SIEMENS
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Siemens IK PI · 2015
AS-Interface
Slaves
I/O modules for use in the field, high degree of protection
Digital I/O modules IP67 – Introduction
4
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Overview
K60
K45
K20
Three coordinated series of AS-Interface compact modules
with digital and analog compact modules and a high degree of
protection are available for use in the field:
•
Series K60 (digital and analog)
•
Series K45 (digital)
•
Series K20 (digital)
All compact modules are characterized by particularly simple
handling. The K60 and K45 modules are mounted with a mount-
ing plate. The mounting plate is used to mount the AS-Interface
flat cables and enables mounting on a wall or standard mounting
rail.
The particularly narrow K20 modules are directly mounted
without a mounting plate and connected to the AS-Interface
using a round cable.
Connection types
For flexible connection of different sensors and actuators, the
following PIN assignments are available on the I/O modules with
M12 sockets:
Standard assignment
With the standard assignment, one sensor/actuator is connected
per M12 socket. In this case the signal for the outputs is ac-
quired at PIN4 while the signal for the inputs is acquired at PIN4
and PIN2. As the result, sensors can be connected directly to
PIN2 and PIN4.
Y assignment
With the Y assignment, two sensors or two actuators can be con-
nected to one M12 socket. In this case, both PIN4 and PIN2 are
provided for one sensor signal and one actuator signal on each
M12 socket.
Y-II assignment
The Y-II assignment offers the following options:
•
Individual connection of a sensor/actuator to one M12 socket
•
Connection of two sensors/actuators to one
M12 socket as follows:
-
The signal of the first sensor/actuator is connected to PIN4 of
the first socket.
- The signal of the second sensor/actuator is connected to
PIN2 of the first socket and to PIN4 of the second socket.
In this case, the second socket is not required and is closed
with a sealing cap.
Overview of digital compact modules
The following table provides an overview of the important
features of the digital compact modules.
.
✓
Available
-- Not available
Version
K60
K45
K20
8 inputs/2 outputs
✓
--
--
8 inputs
✓
✓
--
4 inputs/4 outputs
✓
✓
✓
4 inputs/3 outputs
✓
--
--
4 inputs/2 outputs
✓
--
--
4 inputs
✓
✓
✓
2 inputs/2 outputs
--
✓
✓
4 outputs
✓
✓
✓
3 outputs
--
✓
--
AS-Interface connection
Flat cable /
round cable
Flat cable
Round cable
I/O connection method
M12
M12/M8
M12/M8
Pin assignment
Standard/Y-II/Y
Standard/Y
Standard/Y
Degree of protection
IP65/IP67/IP68/IP69K
IP65/IP67
IP65/IP67
ATEX 3D (Zone 22)
✓
--
--
Extended
address mode
✓
✓
✓
© Siemens AG 2014