Siemens ISI EN 50295 - Manual (Page 71)

Siemens IK PI · 2004 6/71
AS-Interface Slaves
I/O modules for operation in the field
Analog I/O modules IP67 - K60
6
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Overview
The two-channel modules in the K60 compact series collect or
supply analog signals locally. These modules are linked to a
higher-level programmable controller via an AS-Interface master
acc. to Specification 2.1.
The analog modules are grouped into five categories:
• Input module for two current sensors
• Input module for two voltage sensors
• Input module for two temperature sensors
• Output module for two current actuators
• Output module for two voltage actuators
The input and output channels are galvanically isolated from the
AS-Interface network. If sensors with a greater power consump-
tion are to be connected, instead of the internal supply, more
power can be supplied via the auxiliary voltage.
The modules, complete with their technical specifications and
detailed operating instructions, are presented in the manual in
considerable detail. This is supplemented with function block
examples.
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Function
Data transfer in accordance with the 7.3/7.4 analog profile (simplified)
In the case of the 7.3/7.4 analog profile, at least seven AS-Inter-
face cycles are executed until data transfer is complete. For this
purpose, a master with the expanded specification V2.1
must be used.
In the case of input modules, the complete analog value is then
available in the AS-Interface master. Preprocessing takes place
in the master.
The user program fetches the analog value as one value into the
user program on the next system function call. The analog value
is therefore updated extremely quickly.
This procedure takes place in reverse order in the case of output
modules.
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Technical specifications
NSA0_00352a
A n a l o g
m o d u l e
A S -
I n t e r f a c e
m a s t e r
C P U
O n e u s e r p r o g r a m c y c l e ,
w i t h s y s t e m f u n c t i o n c a l l
S e v e n A S -
I n t e r f a c e c y c l e s
( m a x . 5 m s e a c h )
N o t e : T h e i n t e g r a t e d s t a n d a r d f u n c t i o n b l o c k s S F C 5 8 , S F C 5 9
c a n b e u s e d f o r a c c e s s t o t h e v a l u e s .
Slave type Analog-Slave
Profile 7.3
Numerical format S7
Operational voltage in accordance
with AS-Interface specification in V 26.5 to 31.6
Total current consumption of the
module including the connection
of sensors/actuators in mA 150
Current drawn with two sensors
connected in mA
(without U
Aux
infeed)
Max. 46
Additional supply of sensors
via U
Aux
in V
24 to 30
Current drawn from U
Aux
on
connection of 2 sensors
(not short-circuit-proof) in mA
Max. 500
Current drawn on connection of 2
current / voltage actuators in mA Max. 30 / max. 24
I/O configuration 7
ID code 3
AS-Interface certificate In preparation
Approvals UL/CSA/ship building
Degree of protection IP67
Ambient temperature in °C -20 to +60
Storage temperature in °C -40 to +85
AUX PWR display (U
Aux
) Green LED
AS-i display Green LED
FAULT display Red LED
Connection Mounting plate for K60 compact
module