-
4.2
Electrical
installation
l The Controllers contain sensitive electrostatic compontents.
Priior
to assembly and Service operations in the area
of
the
controller connections, the
Personne1
must be free
of
electrostatic Charge.
These persons
tan
discharge
themselves by
touching
the PE
fixing screw or another grounded metal
part
in the control
cabinet.
l All control inputs and Outputs of the controller are mains-
isolated. The mains isolation has a
basic
insulation. The control
inputs and Outputs must be integrated into another
level
of
protection
against
direct
contact.
Use insulated operating elements, connect the mechanical
screw
fastener
of the
setpoint
potentiomenter (accessory kit)
with PE.
l Unused control inputs and Outputs must be protected with plugs
or the
covers
included in the delivery.
l When using current-operated protective equitpment:
-
The
controllers
are internally equipped with a mains rectifier.
As result, a DC-fault
current
may prevent the tripping of the
current-operated protective equipment after a short-circuit to
frame.
Therefore, we recommend additional measures such as
protective multiple
earthing
or universal-current sensitive
current-operated
e.1.c.b.
-
When dimensioning the tripping
current
of current-operated
e.1.c.b.
please observe, that the capacitive leakage currents
between
cable
screens
and RFI
filters
may result in false
tripping.
l The regulations
about
the
minimum
Cross
section
of PE
conductors must be observed. The
Cross-section
of the PE
conductor must be at least as large as the
Cross
section
of the
cable
connection.
l In the
case
of
condensation,
only connect the Controller vwhen
visible moisture has evaporated.
l Before first switching-on of the controller check whether there is
an
earth
fault at the output side, if so, remove it.
Earth
faults
which
occur
during
Operation will be detected, the controller will
be switched off and indicate the fault message
“OCl”.
l The internal
current
limitation
tan
be overloaded when
connecting or disconnecting the controller very often. With cyclic
mains connection, the Controller
tan
be switched on every 3
minutes.
l Replace
defective
fuses only with the specified type and when
no voltage is applied.
The controller remains live for up to 3 minutes after mains
disconnection.
hze
23
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