Jetter JC-120MC, User Manual

Page: 102 / 634

102 Jetter AG
4 Mechanical and electrical installation
To engineer a JX3 station, proceed as follows:
Step Action
1
Gather the following information from the technical data contained in the
manual of your JX3 module:

Current consumption from the logic voltage of the JX3 system bus:
I
5 V

Current consumption from the additional voltage of the JX3 system
bus: I
24 V
2 Calculate the power consumption of the JX3 modules:
3
Add the power consumption of JX3 modules included in the JX3 station.
Start with the first JX3 module connected to the JC-120MC controller, or
to the JX3-BN-xxx bus node.
4
Check whether the allowed power consumption has been exceeded.
5 If ... ... then ...
... the allowed power consumption
P
5 V
has been reached, ...
... insert a JX3-PS1 power supply
module upstream the next
JX3 module.
... the allowed power consumption
P
24V
has been reached, ...
... insert a JX3-PS1 power supply
module upstream the next
JX3 module.
... 8 JX3 modules have been
connected ...
... insert a JX3-PS1 power supply
module upstream the next
JX3 module.
... 16 JX3 modules have been
connected ...
... the JX3 station is fully equipped.
You want to connect 11 JX3-AO4 and 5 JX3-THI2-RTD to a controller
JC-120MC. Check by taking the following steps how the JX3 station must be
engineered to keep power consumption from exceeding the permitted value.
Step Action
1
Determine the current consumption of the JX3 module JX3-AO4 given in
the technical data:

Current consumption from the logic voltage of the JX3 system bus:
70 mA

Current consumption from the additional voltage of the JX3 system
bus: 120 mA
2
Calculate the power consumption of an JX3-AO4:
3
Add the power consumption of n JX3-AO4:
Engineering steps
Example