Mounting and Installation
Page 14
RES-5008
Version 2
7.2
Installation notes
NOTE
The correct dimensioning of the system components is crucial for the correct functioning of
the control loop. Please take this data from the ROPEX application report.
NOTE
In order to enable a good and stable regulation, additional resistances (fuses, long lines, plug
connections, ...) must be avoided in the secondary circuit.
Additional resistances influence the regulation and can make the system prone to errors,
in the long term.
Line
Impulse
transformer
Current transformer
PEX-W4 / W5
U (prim.)
1
Heatsealing band R= f (T)
U (sec.)
2
A
F
Avoid long
cables
Heatseal element
with coppered ends
Use heatseal bands with
suitable temperature coefficient
20 mm clearance if several
controllers installed on
one top hat rail
No additional
resistance
in secondary
circuit
Dimension
transformer correctly
- Secondary voltage
- Power
- Duty cycle
Sufficient wire
cross-section
No
push-on
connectors
Twisted
Current measuring
wires IR
R
Connect U measuring
wires directly to
heatsealing band ends
Line filter
LF-xxxxx
Note
number
of turns
Basic body made
of aluminium,
NO steel