Moeller CM4-505-GV1, Hardware And Engineering

Page: 12 / 78

AS-i/PROFIBUS Gateway Connections, Displays and Operating Keys
is
s
u
e
d
a
te
2
2
.6
.2
0
0
1
12
4.1 Power Supply Concepts and AS-i Connection Techniques
An AS-i power supply has to be used which also supplies the AS-i master with power
and can be connected to the AS-i cable like all the other AS-i components at any
place.
4.1.1 Single Masters in IP65
Every AS-i master and all the AS-i gateways in IP65 come with power supply A. The
AS-i master is connected to AS-i using the penetration technique of the electrome-
chanical interface which is common with AS-i slaves as well.
4.1.2 Single Masters in IP20 with Power Supply A
The terminals have the following functions:
+ "AS-i +", Actuator Sensor Interface, positive terminal
- "AS-i -", Actuator Sensor Interface, negative terminal
GND Ground terminal, used for better EMC.
Should be connected with a short wire to machine GND.
The AS-i masters do not need a voltage supply of their own. They can
be powered completely out of the AS-i line (the power consumption is
about 200 mA from AS-i). An additional 24 V voltage source is not nec-
essary. The AS-i master merely requires the connection to the AS-i line.
When the AS-i power supply is switched on, the master starts to oper-
ate.
AS-i Master
AS-i power
AS-i
Slave AS-i
Slave AS-i
Slave
AS-i power
supply
AS-i master
AS-i
power
GND
+ - + -